Operation support system

• US 6,665,590 B2
• Filed: 02/20/2002
• Issued: 12/16/2003
• Est. Priority Date: 10/30/2001
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Harada, Yasushi, Tomita, Yasushi, Sugiyama, Shigeru
• Primary Examiner(s): Paladini, Albert W.
• Application Number:
  US10/077,807
• Publication Number:
  US 20030083787A1
• Time in Patent Office: 664 Days
• Field of Search: 700/291, 700/286, 700/292, 700/295, 700/83, 307/38, 307/39, 307/20, 307/24, 340/659
• US Class Current: 700/291
• CPC Class Codes: F02D 2041/141 using a feed-forward control element
• CPC Class Codes: F02D 2041/1433 using a model or simulation of the system
• CPC Class Codes: F02D 2041/1437 Simulation
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G06Q 10/04 Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem" market predictions or forecasting for commercial activities G06Q30/0202
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: H02J 3/003 Load forecast, e.g. methods or systems for forecasting future load demand
• CPC Class Codes: Y02E 20/14 Combined heat and power generation [CHP]
• CPC Class Codes: Y04S 10/50 Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Abstract

An operation support system is arranged to effectively provide an operator of an energy supply facility for supplying a plurality of energies in different forms with a hint of an operating method in which energy safety supply and operation cost reduction are both realized. The operation support system takes the steps of deriving demand prediction upper limit value and lower value for each energy form based on recorded demand data; deriving target operation pattern upper and lower limit values of each energy supply device based on the demand prediction upper and lower values; and displaying the target operation pattern upper and lower limit values.

Claims

1. An operation support system of an energy supply facility having a plurality of energy forms, comprising:

demand predicting means for deriving demand prediction upper and lower limits of each energy form;

target operation pattern calculating means for deriving target operation pattern upper and lower limits corresponding with each energy form based on said demand prediction upper and lower limits; and

target operation pattern displaying unit for displaying said target operation pattern upper and lower limits to show accuracy of the target operation pattern.

2. An operation support system as claimed in claim 1, further comprising alarming means for issuing an alarm if the actual operation pattern departs from the range between the upper and the lower limits of said target operation pattern.

3. An operation support system of an energy supply facility having a plurality of energy forms, comprising:

demand predicting means for deriving a demand prediction probability density distribution of each energy form;

target operation pattern calculating means for deriving a target operation pattern probability distribution corresponding with each energy form based on said demand prediction probability density distribution; and

target operation pattern displaying means for displaying said target operation pattern probability density distribution to show accuracy of the target operation pattern.

4. An operation support system as claimed in claim 3, further comprising target upper and lower limits setting means for setting upper and lower limits of said target operation pattern so that an integrated value of said target operation pattern probability density distribution between the upper and the lower limits of said target operation pattern may become a specified value.

5. An operation support system as claimed in claim 4, further comprising alarming means for issuing an alarm if the actual operation pattern departs from the range between the upper and the lower limits of said target operation pattern.

6. An operation support system as claimed in claim 3, wherein said target operation pattern displaying means outputs a three-dimensional representation in which a time, the target operation pattern corresponding with a peak of said target operation pattern probability density distribution, and said target operation pattern probability density distribution are assigned to three axes.

7. An operation support system as claimed in claim 6, further comprising alarming means for issuing an alarm if the actual operation pattern departs from the range between the upper and the lower limits of said target operation pattern.

8. An operation support system as claimed in claim 3, further comprising alarming means for issuing an alarm if the actual operation pattern departs from the range between the upper and the lower limits of said target operation pattern.