Electric power system protection and control system and distributed control system

• US 6,285,917 B1
• Filed: 12/03/1997
• Issued: 09/04/2001
• Est. Priority Date: 12/03/1996
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Masui, Michio, Sekiguchi, Katsuhiko
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): MARC, MCDIEUNEL
• Application Number:
  US08/984,215
• Time in Patent Office: 1,371 Days
• Field of Search: 700/143, 700/22, 700/286, 700/17, 700/239, 700/95, 700/83, 700/9, 700/293, 700/10, 700/295, 700/86, 700/292, 700/6, 700/84, 703/3, 703/18, 403/24, 403/344, 340/825.06, 340/825.17, 340/310.06, 340/870.03, 340/10.5, 340/500
• US Class Current: 700/239
• CPC Class Codes: G05B 19/0421 Multiprocessor system
• CPC Class Codes: G05B 2219/24048 Remote test, monitoring, diagnostic
• CPC Class Codes: G05B 2219/25232 DCS, distributed control system, decentralised control unit
• CPC Class Codes: H02J 13/00001 characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
• CPC Class Codes: H02J 13/00002 characterised by monitoring
• CPC Class Codes: H02J 13/00028 involving the use of Internet protocols
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H02J 3/0073 for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/30 State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
• CPC Class Codes: Y04S 10/40 Display of information, e.g. of data or controls
• CPC Class Codes: Y04S 10/52 Outage or fault management, e.g. fault detection or location
• CPC Class Codes: Y04S 20/00 Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
• CPC Class Codes: Y04S 20/20 End-user application control systems

Abstract

An electric power system protection and control system, including, a plurality of protection controllers, each for executing protection and control of an electric power system by inputting a status quantity of the electric power system and for converting the status quantity into digital data, and a display controller connected to each of the protection controllers via a communication network, for displaying and controlling an operation and status of each of the protection controllers for monitoring. The display controller is provided with a program module sending unit for sending out a program module corresponding to contents for display control in the display controller to one of the protection controllers via the communication network, respectively. Each of the protection controllers is provided with, a program module receiving unit for receiving the program module from the display controller or another one of the protection controllers via the communication network, an execution unit for executing the received program module, and a transfer unit for transferring an execution result by the execution unit or the program module stored in the protection controller to the display controller or another one of the protection controllers via the communication network.

Claims

1. A monitor and control system, comprising:

a plurality of processing units, each configured to at least one of monitor and control an equipment by inputting a status quantity of said equipment; and

a display controller connected to each of said plurality of processing units via a communication network and configured to at least one of display a status and control an operation of each of said plurality of processing units, wherein

said display controller being provided with a program module sending means for sending a program module to each of said plurality of processing units via said communication network,

said program module including computer-readable instructions that when executed by a processor implements at least one of

a setting mechanism configured to store a data value in a memory of at least one of said plurality of processing units,

an analyzing mechanism configured to acquire an operational status parameter of at least one of said plurality of processing units, and

a monitoring mechanism configured to acquire a status parameter from respective of at least one of said plurality of processing units and compare said status parameter to a validity standard, and

each of said plurality of processing units being provided with

a program module receiving means for receiving said program module from at least one of said display controller and another one of said plurality of processing units,

an executing means for executing a received program module, and

a transfer means for transferring an execution result by at least one of said executing means and said program module to at least one of said display controller and at least one of said plurality of processing units via said communication network.

2. An electric power system protection and control system comprising:

a plurality of protection controllers, each configured to protect and control an electric power system by inputting a status quantity of said electric power system and by converting said status quantity into digital data; and

a display controller connected to each of said plurality of protection controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of protection controllers, wherein

said display controller being provided with a program module sending means for sending a program module to one of said plurality of protection controllers via said communication network, respectively,

said program module including computer-readable instructions that when executed by a processor implements at least one of

a setting mechanism configured to store a data value in a memory of at least one of said plurality of protection controllers,

an analyzing mechanism configured to acquire an operational status parameter of at least one of said plurality of protection controllers, and

a monitoring mechanism configured to acquire a status parameter from respective of at least one of said plurality of protection controllers and compare said status parameter to a validity standard, and

each of said plurality of protection controllers being provided with

a program module receiving means for receiving said program module from at least one of said display controller and another one of said plurality of protection controllers via said communication network,

an execution means for executing a received program module, and

a transfer means for transferring an execution result by at least one of said execution means and said program module to at least one of said display controller and at least one of said plurality of protection controllers via said communication network.

3. An electric power system protection and control system, comprising:

a plurality of protection controllers, each configured to protect and control an electric power system by inputting a status quantity of said electric power system and by converting said status quantity into digital data; and

a display controller connected to each of said plurality of protection controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of protection controllers, wherein

said display controller being provided with an operation analyzing program module sending means for sending said operation analyzing program module for analyzing an operation of at least one of said plurality of protection controllers to at least one of said plurality of protection controllers via said communication network, respectively, and each of said plurality of protection controllers being provided with, an operation analyzing program module receiving means for receiving said operation analyzing program module from at least one of said display controller and at least one of said plurality of protection controllers via said communication network,

a knowledge adding means for executing a received operation analyzing program module and for giving an execution result as a knowledge of said operation analyzing program module, and

a sending means for sending said operation analyzing program module after being added with said knowledge to at least one of said display controller and at least one of said plurality of protection controllers via said communication network; and

said display controller being further provided with,

a receiving means for receiving said operation analyzing program module after being added with said knowledge sent from at least one of said plurality of protection controllers, and

a display means for displaying a received result in said receiving means.

4. The electric power system protection and control system according to claim 3:

wherein each of said protection controller is further provided with,

operation information inputting means for giving an operation information to said operation analyzing program module moving among said protection controllers, and

controller information inputting means for giving a controller information as to what range of said electric power system is made an object for protection and control by one of said protection controllers, respectively; and

wherein said operation analyzing program module is provided with,

moving route information inputting means for inputting an information to control a moving route autonomously upon receipt of said operation information and said controller information, and

moving route control means for correcting said moving route based on said operation information and said controller information of one of said protection controllers of moving destination, respectively.

5. The electric power system protection and control system according to claim 3, further comprising:

an operating state prediction knowledge base which stores an operating state when a system fault occurs;

wherein said operation analyzing program module is provided with verifying means for verifying validity of an operation of one of said protection controllers by comparing said operation information collected by said operation analyzing program module with said operation sate prediction knowledge base, respectively.

6. The electric power system protection and control system according to claim 3, further comprising:

a plurality of system observation units, each for taking and accumulating electrical quantity from said electric power system;

wherein said operation analyzing program module is provided with,

moving route control means for correcting a moving route based on an operation information collected by said operation analyzing program module moving among said protection controllers which may be related to a system fault of said electric power system, and

verifying means for verifying validity of an operation of one of said protection controllers by comparing said operation information collected by said operation analyzing program module with said electrical quantity collected by said operation analyzing program module from one of said system observation units based on a result of said moving route control means.

7. An electric power system protection and control system, comprising:

a plurality of protection controllers, each configured to protect and control an electric power system by inputting a status quantity of said electric power system and by converting said status quantity into digital data; and

a display controller connected to each of said plurality of protection controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of protection controllers, wherein

said display controller being provided with a monitoring program module sending means for sending said monitoring program module for monitoring a status of at least one of said plurality of protection controllers to at least one of said plurality of protection controllers via said communication network, respectively, and

each of said plurality of protection controllers being provided with

a monitoring program module receiving means for receiving said monitoring program module from at least one of said display controller and at least one of said plurality of protection controllers via said communication network,

a knowledge adding means for executing a received monitoring program module and for giving an execution result as a knowledge of said monitoring program module, and

a sending means for sending said monitoring program module after being added with said knowledge to at least one of said display controller and at least one of said plurality of protection controllers via said communication network; and

said display controller being further provided with

a receiving means for receiving said monitoring program module after being added with said knowledge sent from at least one of said plurality of protection controllers, and

a display means for displaying a received result in said receiving means.

8. The electric power system protection and control system according to claim 7:

wherein said monitoring program module is provided with,

abnormality detection means for detecting an abnormality of one of said protection controllers, respectively, and

moving route control means for controlling a moving route of said monitoring program based on an output of said abnormality detection means.

9. The electric power system protection and control system according to claim 7:

wherein specific purpose data collection program module is provided as said monitoring program module;

wherein said display controller is provided with specific purpose indication means for giving a specific purpose to said specific purpose data collection program module; and

wherein said specific purpose data collection program module is provided with,

data collection means for collecting data in one of said protection controllers in accordance with said specific purpose, and

comparison means for carrying out comparison statistics processing on the same item of said collected data of one of said protection controllers.

10. The electric power system protection and control system according to claim 7, further comprising:

diagnostic program module for diagnosing one of said protection controllers in detail and for specifying a failure part in one of said protection controllers, in which said monitoring program module judges that there is an occurrence of abnormality or an omen of and occurrence of abnormality;

wherein said display controller is provided with diagnostic program module sending means for sending out said diagnostic program module to one of said protection controllers via said communication network; and

wherein each of said protection controllers is provided with,

diagnostic program module receiving means for receiving said diagnostic program module, and

execution means for executing said diagnostic program module.

11. The electric power system protection and control system according to claim 10, further comprising:

program storage means for storing a repair program module for repairing one of said protection controller in order to continue the operation of one of said protection controllers, respectively;

wherein said program storage means is provided with repair program module sending means for sending out said repair program module corresponding to said failure part to one of said protection controllers via said communication network in order to continue the operation of one of said protection controllers after said failure part is specified by said diagnostic program module; and

wherein each of said protection controllers is further provided with,

repair program module receiving means for receiving said repair program module, and

execution means for executing said repair program module.

12. The electric power system protection and control system according to claim 7, wherein:

said monitoring program module is provided with control means for controlling a transfer cycle, stay time in one of said protection controllers, processing contents and moving route of said monitoring program in accordance with working results and operating results of one of said protection controllers.

13. An electric power system protection and control system, comprising:

a plurality of protection controllers, each configured to protect and control an electric power system by inputting a status quantity of said electric power system and by converting said status quantity into digital data; and

a display controller connected to each of said plurality of protection controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of protection controllers, wherein

said display controller being provided with a setting program module sending means for sending said setting program module for setting at least one of said plurality of protection controllers to at least one of said plurality of protection controllers via said communication network, respectively, and

each of said plurality of protection controllers being provided with

a setting program module receiving means for receiving said setting program module from at least one of said display controller and at least one of said plurality of protection controllers via said communication network,

a knowledge adding means for executing a received setting program module and for giving an execution result as a knowledge of said setting program module, and

a sending means for sending said setting program module after being added with said knowledge to at least one of said display controller and another one of said plurality of protection controllers via said communication network; and

said display controller being further provided with

a receiving means for receiving said setting program module after being added with said knowledge sent from at least one of said plurality of protection controllers, and

a display means for displaying a received result in said receiving means.

14. The electric power system protection and control system according to claim 13:

wherein each of said protection controller is further provided with input means for inputting, in each of said protection controller, system electrical quantity information, system information, and related equipment information to said setting module moving among said protection controllers; and

wherein said setting program module is provided with,

moving route control means for controlling a moving route autonomously, and

setting value determination means for determining a setting value to be changed.

15. The electric power system protection and control system according to claim 13, further comprising:

protection and control operation program storage means for storing a protection and control operation program module which can be called out from said setting module moving among said protection controllers;

wherein said setting program module is provided with,

moving route control means for controlling a moving route autonomously, and

protection and control operation determination means for determining said protection and control operation program module necessary for one of said protection controllers and for calling out said determined protection and control operation program module from said protection and control operation program module storage means; and

wherein each of said protection controller is further provided with,

input means for inputting, in each of said protection controller, system electrical quantity information, system information, and related equipment information to said setting module moving among said protection controllers, and

protection and control operation executing means for executing said determined protection and control operation program module collected by said protection and control operation determination means.

16. A distributed control system, comprising:

a plurality of distributed controllers, each for controlling an equipment to be controlled by inputting a status quantity of said equipment and for by converting said status quantity into digital data; and

a display controller connected to each of said plurality of distributed controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of distributed controllers, wherein

said display controller being provided with a program module sending means for sending a program module to one of said plurality of distributed controllers via said communication network, respectively,

said program module including computer-readable instructions that when executed by a processor implements at least one of

a setting mechanism configured to store a data value in a memory of at least one of said plurality of distributed controllers,

an analyzing mechanism configured to acquire an operational status parameter of at least one of said plurality of distributed controllers, and

a monitoring mechanism configured to acquire a status parameter from respective of at least one of said plurality of distributed controllers and compare said status parameter to a validity standard, and

each of said plurality of distributed controllers being provided with

a program module receiving means for receiving said program module from at least one of said display controller and at least one of said plurality of distributed controllers via said communication network,

an execution means for executing a received program module, and

a transfer means for transferring an execution result by at least one of said execution means and said program module to at least one of said display controller and at least one of said plurality of distributed controllers via said communication network.

17. A distributed control system, comprising:

a plurality of distributed controllers, each for controlling an equipment to be controlled by inputting a status quantity of said equipment and by converting said status quantity into digital data; and

a display controller connected to each of said plurality of distributed controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of distributed controllers, wherein

said display controller being provided with an operation analyzing program module sending means for sending said operation analyzing program module for analyzing an operation of at least one of said plurality of distributed controllers to at least one of said plurality of distributed controllers via said communication network, respectively, and

each of said plurality of distributed controllers being provided with

an operation analyzing program module receiving means for receiving said operation analyzing program module from at least one of said display controller and at least one of said plurality of distributed controllers via said communication network,

a knowledge adding means for executing a received operation analyzing program module and for giving an execution result as a knowledge of said operation analyzing program module, and

a sending means for sending said operation analyzing program module after being added with said knowledge to at least one of said display controller and at least one of said plurality of distributed controllers via said communication network; and

said display controller being further provided with,

a receiving means for receiving said operation analyzing program module after being added with said knowledge sent from at least one of said plurality of distributed controllers, and

a display means for displaying a received result in said receiving means.

18. A distributed control system, comprising:

a plurality of distributed controllers, each for controlling an equipment to be controlled by inputting a status quantity of said equipment and by converting said status quantity into digital data; and

a display controller connected to each of said plurality of distributed controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of distributed controllers, wherein

said display controller being provided with a monitoring program module sending means for sending said monitoring program module for monitoring a status of at least one of said plurality of distributed controllers to at least one of said plurality of distributed controllers via said communication network, respectively, and

each of said plurality of distributed controllers being provided with

a monitoring program module receiving means for receiving said monitoring program module from at least one of said display controller and at least one of said plurality of distributed controllers via said communication network,

a knowledge adding means for executing a received monitoring program module and for giving an execution result as a knowledge of said monitoring program module, and

a sending means for sending said monitoring program module after being added with said knowledge to at least one of said display controller and at least one of said plurality of distributed controllers via said communication network; and

said display controller being further provided with

a receiving means for receiving said monitoring program module after being added with said knowledge sent from at least one of said plurality of distributed controllers, and

a display means for displaying a received result in said receiving means.

19. A distributed control system, comprising:

a plurality of distributed controllers, each for controlling an equipment to be controlled by inputting a status quantity of said equipment and by converting said status quantity into digital data; and

a display controller connected to each of said plurality of distributed controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of distributed controllers, wherein

said display controller being provided with a setting program module sending means for sending said setting program module for setting at least one of said plurality of distributed controllers to at least one of said plurality of distributed controllers via said communication network, respectively, and

each of said plurality of distributed controllers being provided with

a setting program module receiving means for receiving said setting program module from at least one of said display controller and at least one of said plurality of distributed controllers via said communication network,

a knowledge adding means for executing said a received setting program module and for giving an execution result as a knowledge of said setting program module, and

a sending means for sending said setting program module after being added with said knowledge to at least one of said display controller and at least one of said plurality of distributed controllers via said communication network; and

said display controller being further provided with, a receiving means for receiving said setting program module after being added with said knowledge sent from at least one of said plurality of distributed controllers, and

a display means for displaying a received result in said receiving means.

20. A monitor and control device, comprising:

a plurality of processing units, each configured to at least one of monitor and control an equipment by inputting a status quantity of said equipment; and

a display controller connected to each of said plurality of processing units via a communication network and configured to at least one of display a status and control an operation of each of said plurality of processing units, wherein

said display controller being provided with a program module sending unit for sending a program module to each of said plurality of processing units via said communication network,

said program module including computer-readable instructions that when executed by a processor implements at least one of

a setting mechanism configured to store a data value in a memory of at least one of said plurality of processing units,

an analyzing mechanism configured to acquire an operational status parameter of at least one of said plurality of processing units, and

a monitoring mechanism configured to acquire a status parameter from respective of at least one of said plurality of processing units and compare said status parameter to a validity standard, and

each of said plurality of processing units being provided with

a program module receiving unit for receiving said program module from at least one of said display controller and another one of said plurality of processing units,

an executing unit for executing a received program module, and

a transfer unit for transferring an execution result by at least one of said executing unit and said program module to at least one of said display controller and at least one of said plurality of processing units via said communication network.

21. An electric power system protection and control device, comprising:

a plurality of protection controllers, each configured to protect and control an electric power system by inputting a status quantity of said electric power system and by converting said status quantity into digital data; and

a display controller connected to each of said plurality of protection controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of protection controllers, wherein

said display controller being provided with a program module sending unit for sending a program module to one of said plurality of protection controllers via said communication network, respectively,

said program module including computer-readable instructions that when executed by a processor implements at least one of

a setting mechanism configured to store a data value in a memory of at least one of said plurality of protection controllers,

an analyzing mechanism configured to acquire an operational status parameter of at least one of said plurality of protection controllers, and

a monitoring mechanism configured to acquire a status parameter from respective of at least one of said plurality of protection controllers and compare said status parameter to a validity standard, and

each of said plurality of protection controllers being provided with

a program module receiving unit for receiving said program module from at least one of said display controller and at least one of said plurality of protection controllers via said communication network,

an execution unit for executing a received program module, and

a transfer unit for transferring an execution result by at least one of said execution unit and said program module to at least one of said display controller and at least one of said plurality of protection controllers via said communication network.

22. An electric power system protection and control device, comprising:

a plurality of protection controllers, each configured to protect and control an electric power system by inputting a status quantity of said electric power system and by converting said status quantity into digital data; and

a display controller connected to each of said plurality of protection controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of protection controllers, wherein

said display controller being provided with an operation analyzing program module sending unit for sending said operation analyzing program module for analyzing an operation of at least one of said plurality of protection controllers to at least one of said plurality of protection controllers via said communication network, respectively, and

each of said plurality of protection controllers being provided with

an operation analyzing program module receiving unit for receiving said operation analyzing program module from at least one of said display controller and at least one of said plurality of protection controllers via said communication network,

a knowledge adding unit for executing a received operation analyzing program module and for giving an execution result as a knowledge of said operation analyzing program module, and

a sending unit for sending said operation analyzing program module after being added with said knowledge to at least one of said display controller and at least one of said plurality of protection controllers via said communication network; and

said display controller being further provided with

a receiving unit for receiving said operation analyzing program module after being added with said knowledge sent from at least one of said plurality of protection controllers, and

a display unit for displaying a received result in said receiving unit.

23. An electric power system protection and control device, comprising:

a plurality of protection controllers, each configured to protect and control an electric power system by inputting a status quantity of said electric power system and by converting said status quantity into digital data; and

a display controller connected to each of said plurality of protection controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of protection controllers, wherein

said display controller being provided with a monitoring program module sending unit for sending said monitoring program module for monitoring a status of at least one of said plurality of protection controllers to at least one of said plurality of protection controllers via said communication network, respectively, and

each of said plurality of protection controllers being provided with

a monitoring program module receiving unit for receiving said monitoring program module from at least one of said display controller and at least one of said plurality of protection controllers via said communication network,

a knowledge adding unit for executing a received monitoring program module and for giving an execution result as a knowledge of said monitoring program module, and

a sending unit for sending said monitoring program module after being added with said knowledge to at least one of said display controller and at least one of said plurality of protection controllers via said communication network; and

said display controller being further provided with, a receiving unit for receiving said monitoring program module after being added with said knowledge sent from at least one of said plurality of protection controllers, and

a display unit for displaying a received result in said receiving unit.

24. An electric power system protection and control device, comprising:

a plurality of protection controllers, each configured to protect and control an electric power system by inputting a status quantity of said electric power system and by converting said status quantity into digital data; and

a display controller connected to each of said plurality of protection controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of protection controllers, wherein

said display controller being provided with a setting program module sending unit for sending said setting program module for setting at least one of said plurality of protection controllers to at least one of said plurality of protection controllers via said communication network, respectively, and

each of said plurality of protection controllers being provided with

a setting program module receiving unit for receiving said setting program module from at least one of said display controller and at least one of said plurality of protection controllers via said communication network,

a knowledge adding unit for executing a received setting program module and for giving an execution result as a knowledge of said setting program module, and

a sending unit for sending said setting program module after being added with said knowledge to at least one of said display controller and at least one of said plurality of protection controllers via said communication network; and

said display controller being further provided with, a receiving unit for receiving said setting program module after being added with said knowledge sent from at least one of said plurality of protection controllers, and

a display unit for displaying a received result in said receiving unit.

25. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for a monitor and control system, including a plurality of processing units, each configured to perform at least one of monitoring and controlling an equipment by inputting a status quantity of said equipment, and a display controller connected to each of said plurality of processing units via a communication network and configured to at least one of display a status and control an operation of each of said plurality of processing units, said method steps comprising:

receiving a program module corresponding to contents for display control in said display controller from said at least one of display controller and at least one of said plurality of processing units, at at least one of said processing units,

said program module including computer-readable instructions that when executed by a processor implements at least one of

a setting mechanism configured to store a data value in a memory of at least one of said plurality of processing units,

an analyzing mechanism configured to acquire an operational status parameter of at least one of said plurality of processing units, and

a monitoring mechanism configured to acquire a status parameter from respective of at least one of said plurality of processing units and compare said status parameter to a validity standard;

executing a received program module, at at least one of said processing units; and

transferring at least one of an execution result by said execution step and said program module stored in at least one of said plurality of processing unit to at least one of said display controller and another one of said processing units via said communication network, at at least one of said plurality of processing units.

26. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for a monitor and control system, including a plurality of processing units, each configured to perform at least one of monitoring and controlling an equipment by inputting a status quantity of said equipment, and a display controller connected to each of said plurality of processing units via a communication network and configured to at least one of display a status and control an operation of each of said plurality of processing units for monitoring, said method steps comprising:

sending a program module corresponding to contents for display control in said display controller to each of said plurality of processing units via said communication network, at said display controller,

said program module including computer-readable instructions that when executed by a processor implements at least one of

a setting mechanism configured to store a data value in a memory of at least one of said plurality of processing units,

an analyzing mechanism configured to acquire an operational status parameter of at least one of said plurality of processing units, and

a monitoring mechanism configured to acquire a status parameter from respective of at least one of said plurality of processing units and compare said status parameter to a validity standard.

27. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for an electric power system protection and control system including a plurality of protection controllers, each configured to execute protection and control of an electric power system by inputting a status quantity of said electric power system and to convert said status quantity into digital data, and a display controller connected to each of said plurality of protection controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of protection controllers for monitoring, said method steps comprising:

receiving a program module corresponding to contents for display control in said display controller from at least one of said display controller and at least one of said plurality of protection controllers via said communication network at at least one of said protection controllers,

said program module including computer-readable instructions that when executed by a processor implements at least one of

a setting mechanism configured to store a data value in a memory of at least one of said plurality of protection controllers,

an analyzing mechanism configured to acquire an operational status parameter of at least one of said plurality of protection controllers, and

a monitoring mechanism configured to acquire a status parameter from respective of at least one of said plurality of protection controllers and compare said status parameter to a validity standard,

executing a received program module at at least one of said protection controllers; and

transferring at least one of an execution result by said executing step and said program module stored in said plurality of protection controller to at least one of said display controller and at least one of said plurality of protection controllers via said communication network from at least one of said plurality of protection controllers.

28. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for an electric power system protection and control system including a plurality of protection controllers, each configured to execute protection and control of an electric power system by inputting a status quantity of said electric power system and to convert said status quantity into digital data, and a display controller connected to each of said plurality of protection controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of protection controllers for monitoring, said method steps comprising:

sending a program module corresponding to contents for display control in said display controller to at least one of said plurality of protection controllers via said communication network, at said display controller,

said program module including computer-readable instructions that when executed by a processor implements at least one of

a setting mechanism configured to store a data value in a memory of at least one of said plurality of protection controllers,

an analyzing mechanism configured to acquire an operational status parameter of at least one of said plurality of protection controllers, and

a monitoring mechanism configured to acquire a status parameter from respective of at least one of said plurality of protection controllers and compare said status parameter to a validity standard.

29. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for an electric power system protection and control system including a plurality of protection controllers, each configured to execute protection and control of an electric power system by inputting a status quantity of said electric power system and to convert said status quantity into digital data, and a display controller connected to each of said plurality of protection controllers via a communication network and configured to at least one of display a status and control an operation of each of said plurality of protection controllers for monitoring, said method steps comprising:

sending an operation analyzing program module for analyzing an operation of at least one of said plurality of protection controllers to at least one of said plurality of protection controllers via said communication network, respectively, at said display controller; and

receiving at said display controller an operation analyzing program module after addition of knowledge thereto sent from at least one of said plurality of protection controllers.

30. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for an electric power system protection and control system including a plurality of protection controllers, each configured to execute at least one of protection and control of an electric power system by inputting a status quantity of said electric power system and to convert said status quantity into digital data, and a display controller connected to each of said plurality of protection controllers via a communication network and configured to display a status and control an operation of each of said plurality of protection controllers for monitoring, said method steps comprising:

receiving an operation analyzing program module for analyzing an operation of at least one of said plurality of protection controllers from at least one of said display controller and at least one of said plurality of protection controllers via said communication network at at least one of said plurality of protection controllers;

executing a received operation analyzing program module and to give an execution result as a knowledge of said operation analyzing program module at at least one of said plurality of protection controllers; and

sending said operation analyzing program module after addition of said knowledge thereto to at least one of said display controller and at least one of said plurality of protection controllers via said communication network at at least one of said plurality of protection controllers.

31. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for an electric power system protection and control system including a plurality of protection controllers, each configured to execute protection and control of an electric power system by inputting a status quantity of said electric power system and to convert said status quantity into digital data, and a display controller connected to each of said plurality of protection controllers via a communication network and configured to display a status and control an operation of each of said plurality of protection controllers, said method steps comprising:

sending a monitoring program module for monitoring a status of at least one of said plurality of protection controllers to at least one of said plurality of protection controllers via said communication network, at said display controller; and

receiving said monitoring program module after addition thereto of a knowledge sent from at least one of said plurality of protection controllers, at said display controller.

32. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for an electric power system protection and control system including a plurality of protection controllers, each configured to execute protection and control of an electric power system by inputting a status quantity of said electric power system and configured to convert said status quantity into digital data, and a display controller connected to each of said plurality of protection controllers via a communication network, configured to display a status and control an operation of each of said plurality of protection controllers, said method steps comprising:

receiving a monitoring program module for monitoring a status of at least one of said plurality of protection controllers from at least one of said display controller and another at least one of said plurality of protection controllers via said communication network at at least one of said plurality of protection controllers;

executing a received monitoring program module; and

outputting an execution result as a knowledge of said monitoring program module at at least one of said plurality of protection controllers; and

sending said monitoring program module after addition thereto of said knowledge to at least one of said display controller and at least one of said plurality of protection controllers via said communication network, at at least one of said plurality of protection controllers.

33. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for an electric power system protection and control system including a plurality of protection controllers, each configured to execute protection and control of an electric power system by inputting a status quantity of said electric power system and convert said status quantity into digital data, and a display controller connected to each of said plurality of protection controllers via a communication network and configured to display a status and control an operation of each of said plurality of protection controllers, said method steps comprising:

sending a setting program module for setting at least one of said plurality of protection controllers to at least one of said plurality protection controllers via said communication network; and

receiving, at said display controller, said setting program module after addition thereto of knowledge sent from at least one of said plurality of protection controllers.

34. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for an electric power system protection and control system including a plurality of protection controllers, each configured to execute protection and control of an electric power system by inputting a status quantity of said electric power system and to convert said status quantity into digital data, and a display controller connected to each of said plurality of protection controllers via a communication network and configured to display a status and control an operation of each of said plurality of protection controllers, said method steps comprising:

receiving a setting program module for setting at least one of said plurality of protection controllers from at least one of said display controller and at least one of said plurality of protection controllers via said communication network at at least one of said plurality of protection controllers;

executing a received setting program module and to give an execution result as a knowledge of said setting program module at least one of said plurality of protection controllers; and

sending said setting program module after addition of said knowledge thereto to at least one of said display controller and at least one of said plurality of protection controllers via said communication network at at least one of said plurality of protection controllers.

35. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for a distributed controls system including a plurality of distributed controllers, each configured to control an equipment to be controlled by inputting a status quantity of said equipment and to convert said status quantity into digital data, and a display controller connected to each of said plurality of distributed controllers via a communication network and configured to display a status and control an operation of each of said plurality of distributed controllers, said method steps comprising:

receiving a program module corresponding to contents for display control in said display controller from at least one of said display controller and at least one of said plurality of distributed controllers via said communication network at at least one of said plurality of distributed controllers,

said program module including computer-readable instructions that when executed by a processor implements at least one of

a setting mechanism configured to store a data value in a memory of at least one of said plurality of distribution controllers,

an analyzing mechanism configured to acquire an operational status parameter of at least one of said plurality of distribution controllers, and

a monitoring mechanism configured to acquire a status parameter from respective of at least one of said plurality of distribution controllers and compare said status parameter to a validity standard,

executing a received program module at at least one of said plurality of distributed controllers; and

transferring at least one of an execution result by said execution step and said program module stored in said plurality of distributed controllers to at least one of said display controller and at least one of said plurality of distributed controllers via said communication network at at least one of said plurality of distributed controllers.

36. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for a distributed control system including a plurality of distributed controllers, each configured to control an equipment to be controlled by inputting a status quantity of said equipment and to convert said status quantity into digital data, and a display controller connected to each of said plurality of distributed controllers via a communication network and configured to display a status and control an operation of each of said plurality of distributed controllers, said medium storing a program comprising the step of:

sending a program module corresponding to contents for display control in said display controller to at least one of said plurality of distributed controllers via a communication network, at said display controller,

said program module including computer-readable instructions that when executed by a processor implements at least one of

a setting mechanism configured to store a data value in a memory of at least one of said plurality of distribution controllers,

an analyzing mechanism configured to acquire an operational status parameter of at least one of said plurality of distribution controllers, and

a monitoring mechanism configured to acquire a status parameter from respective of at least one of said plurality of distribution controllers and compare said status parameter to a validity standard.

37. A storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for a distributed control system including a plurality of distributed controllers, each configured to control an equipment to be controlled by inputting a status quantity of said equipment and to convert said status quantity into digital data, and a display controller connected to each of said plurality of distributed controllers via a communication network and configured to display a status and control an operation of each of said plurality of distributed controllers, said method steps comprising:

sending an operation analyzing program module for analyzing an operation of one of said plurality of distributed controllers to at least one of said plurality of distributed controllers via said communication network, at said display controller; and

receiving at said display controller said operation analyzing program module after addition thereto of a knowledge sent from one of said plurality of distributed controllers.

38. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for a distributed control system including a plurality of distributed controllers, each for controlling an equipment to be controlled by inputting a status quantity of said equipment and to convert said status quantity into digital data, and a display controller connected to each of said plurality of distributed controllers via a communication network and configured to display a status and control an operation of each of said plurality of distributed controllers, said method steps comprising:

receiving an operation analyzing program module for analyzing an operation of at least one of said plurality of distributed controllers from at least one of said display controller and at least one of said plurality of distributed controllers via said communication network at at least one of said plurality of distributed controllers;

executing a received operation analyzing program module; and

outputting an execution result as a knowledge of said operation analyzing program module at at least one of said plurality of distributed controllers; and

sending said operation analyzing program module after addition thereto of said knowledge to at least one of said display controller and at least one of said plurality of distributed controllers via said communication network at at least one of said plurality of distributed controllers.

39. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for a distributed control system a plurality of distributed controllers, each configured to control an equipment to be controlled by inputting a status quantity of said equipment and to convert said status quantity into digital data, and a display controller connected to each of said plurality of distributed controllers via a communication network and configured to display a status and control an operation of each of said plurality of distributed controllers, said method steps comprising:

sending a monitoring program module for monitoring a status of at least one of said plurality of distributed controllers to at least one of said plurality of distributed controllers via said communication network, at said display controller, and

receiving at said display controller said monitoring program module after addition thereto of a knowledge sent from at least one of said plurality of distributed controllers.

40. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for a distributed control system including a plurality of distributed controllers, each configured to control an equipment to be controlled by inputting a status quantity of said equipment and to convert said status quantity into digital data, and a display controller connected to each of said plurality of distributed controllers via a communication network and configured to display a status and control an operation of each of said plurality of distributed controllers, said method steps comprising:

receiving a monitoring program module for monitoring a status of at least one of said plurality of distributed controllers from at least one of said display controller and at least one of said plurality of distributed controllers via said communication network at at least one of said plurality of distributed controllers;

executing said received monitoring program module;

outputting an execution result as a knowledge of said monitoring program module at at least one of said plurality of distributed controllers; and

sending said monitoring program module after addition thereto of said knowledge to at least one of said display controller and [another] at least one of said plurality of distributed controllers via said communication network at at least one of said plurality of distributed controllers.

41. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for a distributed control system including a plurality of distributed controllers, each configured to control an equipment to be controlled by inputting a status quantity of said equipment and to convert said status quantity into digital data, and a display controller connected to each of said plurality of distributed controllers via a communication network and configured to display a status and control an operation of each of said plurality of distributed controllers, said method steps comprising:

sending a setting program module for setting at least one of said plurality of distributed controllers to at least one of said plurality of distributed controllers via said communication network, respectively, and

receiving said setting program module after addition thereto of a knowledge sent from at least one of said plurality of distributed controllers.

42. A program storing medium readable by a computer, tangibly embodying a program of instructions executable by said computer to perform method steps for a distributed control system including a plurality of distributed controllers, each configured to control an equipment to be controlled by inputting a status quantity of said equipment and to convert said status quantity into digital data, and a display controller connected to each of said plurality of distributed controllers via a communication network and configured to display a status and control an operation of each of said plurality of distributed controllers, said method steps comprising:

receiving step a setting program module for setting at least one of said plurality of distributed controllers from at least one of said display controller and at least one of said plurality of distributed controllers via said communication network at at least one of said plurality of distributed controllers;

executing a received setting program module;

outputting an execution result as a knowledge of said setting program module at at least one of said plurality of distributed controllers; and

sending said setting program module after addition thereto of said knowledge to at least one of said display controller and at least one of said plurality of distributed controllers via said communication network at at least one of said plurality of distributed controllers.