System for aiding the preparation of operation and maintenance plans for a power generation installation

• US 6,853,930 B2
• Filed: 09/14/2001
• Issued: 02/08/2005
• Est. Priority Date: 02/27/2001
• Status: Expired due to Term

• Current Assignee: mitsubishi hitachi power systems, ltd. (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: Hitachi, Ltd.
• Inventors: Hayashi, Yoshiharu, Fujimura, Hidekazu, Furukawa, Masao, Shimizu, Katsuhito, Hayasaka, Yasushi
• Primary Examiner(s): Hoff, Marc S.
• Assistant Examiner(s): Desta, Elias
• Application Number:
  US09/952,024
• Publication Number:
  US 20020120412A1
• Time in Patent Office: 1,243 Days
• Field of Search: 702 60- 62, 702 64- 65, 702/108, 702/115, 702/181, 702/187, 702/119, 702/122, 702/123, 702/179, 702/185, 702/188, 702/FOR.103, 702/104, 702/106, 702/111, 702/134, 702/135, 702/139, 702/155, 702/170, 702/171, 700/110, 700/287, 700/9, 700/17, 700/19, 700/22, 700/65, 700/67, 700/83, 700/108, 700/286, 376/241, 376/207, 340/855.8, 340/500, 340/693.1, 340/538, 340/737, 340/286.01, 340/333, 602/04, 706/902, 706/915, 706/903, 706/906, 706/907, 703/13, 703/18, 703/20, 703/22, 703/FOR.802
• US Class Current: 702/61
• CPC Class Codes: G05F 1/66 Regulating electric power
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 2203/20 Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02E 40/70 Smart grids as climate change mitigation technology in the energy generation sector
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• 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
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security
• CPC Class Codes: Y10S 706/902 Application using ai with detail of the ai system
• CPC Class Codes: Y10S 706/915 Power plant

Abstract

In order to provide an operation and maintenance planning aiding system for a power generation installation which prepares an operation plan for a plurality of power generation units by making use of actual plant data and based on a total judgement including a variety of circumstances of the machine and apparatus or the parts thereof in the power generation units, in the system the plurality of power generation units 41, 42, 51 and 52, a power supply command center 3 and a service center 1 are arranged and connected via a communication network 6, the service center 1 obtains the plant data via the communication network 6 from the plurality of power generation units 41, 42, 51 and 52, calculates in real time a power generation efficiency of a concerned power generation unit for every plurality of power generation units 41, 42 51 and 52 by making use of the obtained plant data and design data of the concerned power generation unit and prepares an operation and maintenance plan for each of the power generation units based on the calculated power generation efficiency.

Claims

1. A system for aiding the preparation of operation and maintenance plans for a power generation installation, in which a plurality of power generation units, a power supply command center and a service center are arranged and connected via communication networks, wherein the service center obtains plant data from the plurality of power generation units via the respective communication networks, for the every plurality of power generation units calculates power generation efficiency for the concerned power generation units in real time by making use of the obtained plant data and design data of the concerned power generation units and prepares operation and maintenance plans for the respective power generation units based on the calculated power generation efficiency.

5. The system of claim 1, wherein the service center stores in a database failure histories of the machine and apparatus or the parts thereof in the plurality of power generation units, calculates a failure probability of the machine and apparatus or the parts thereof by making use of the failure histories stored in the database, and prepares an operation and maintenance plan for each of the power generation units in view of the calculated failure probability.

9. The system of claim 1, wherein the service center stores in a database manufacturers of the machine and apparatus or the parts thereof in the plurality of power generation units and superiority with regard to reliability and maintenance capacity of the manufacturers and prepares an operation and maintenance plan for each of the power generation units in view of the superiority of the manufacturers stored in the database when evaluating the machine and apparatus or the parts thereof.

13. The system of claim 1, wherein the service center obtains the plant data for every plurality of the power generation unit in a predetermined time interval.

2. A system for aiding the preparation of operation and maintenance plans for a power generation installation, in which a plurality of power generation units, a power supply command center and a service center are arranged and connected via communication networks, wherein the service center obtains plant data from the plurality of power generation units via the respective communication networks, for the every plurality of power generation units estimates process values in a machine and apparatus model by making use of the obtained plant data, determines deviation values between the estimated values and measured values, calculates from the determined deviation value a cost of economical loss caused by a power generation efficiency reduction of the concerned power generation unit, and prepares operation and maintenance plans for the respective power generation units through comparison between the calculated cost of economical loss and a cost relating to exchange of the machine and apparatus and the parts thereof in the concerned power generation unit.

6. The system of claim 2, wherein the service center stores in a database failure histories of the machine and apparatus or the parts thereof in the plurality of power generation units, calculates a failure probability of the machine and apparatus or the parts thereof by making use of the failure histories stored in the database, and prepares an operation and maintenance plan for each of the power generation units in view of the calculated failure probability.

10. The system of claim 2, wherein the service center stores in a database manufacturers of the machine and apparatus or the parts thereof in the plurality of power generation units and superiority with regard to reliability and maintenance capacity of the manufacturers and prepares an operation and maintenance plan for each of the power generation units in view of the superiority of the manufacturers stored in the database when evaluating the machine and apparatus or the parts thereof.

14. The system of claim 2, wherein the service center obtains the plant data for every plurality of the power generation unit in a predetermined time interval.

3. A system for aiding the preparation of operation and maintenance plans for a power generation installation, in which a plurality of power generation units, a power supply command center and a service center are arranged and connected via communication networks, wherein the service center obtains plant data from the plurality of power generation units via the respective communication networks, for the every plurality of power generation units calculates remaining lifetime of the machine and apparatus and the parts thereof in the concerned power generation unit by making use of the obtained plant data and prepares operation and maintenance plans for the respective power generation units by determining exchange time of the machine and apparatus and the parts thereof in the concerned power generation unit based on the calculated remaining lifetime thereof.

7. The system of claim 3, wherein the service center stores in a database failure histories of the machine and apparatus or the parts thereof in the plurality of power generation units, calculates a failure probability of the machine and apparatus or the parts thereof by making use of the failure histories stored in the database, and prepares an operation and maintenance plan for each of the power generation units in view of the calculated failure probability.

11. The system of claim 3, wherein the service center stores in a database manufacturers of the machine and apparatus or the parts thereof in the plurality of power generation units and superiority with regard to reliability and maintenance capacity of the manufacturers and prepares an operation and maintenance plan for each of the power generation units in view of the superiority of the manufacturers stored in the database when evaluating the machine and apparatus or the parts thereof.

15. The system of claim 3, wherein the service center obtains the plant data for every plurality of the power generation unit in a predetermined time interval.

4. A system for aiding the preparation of operation and maintenance for a power generation installation, in which a plurality of power generation units, a power supply command center and a service center are arranged and connected via communication networks, wherein the service center obtains plant data from the plurality of power generation units via the respective communication networks, for the every plurality of power generation units calculates remaining lifetime of the machine and apparatus and the parts thereof in the concerned power generation unit by making use of the obtained plant data, compares the calculated remaining lifetime with remaining lifetime of the machine and apparatus in the power generation unit determined in the other power generation unit, modifies the operation condition for the machine and apparatus and the parts thereof so as to enhance economy and prolong or shorten the remaining lifetime of the machine and apparatus and the parts thereof in the concerned power generation unit, thereby, prepares the operation and maintenance plans for the respective power generation units.

8. The system of claim 4, wherein the service center stores in a database failure histories of the machine and apparatus or the parts thereof in the plurality of power generation units, calculates a failure probability of the machine and apparatus or the parts thereof by making use of the failure histories stored in the database, and prepares an operation and maintenance plan for each of the power generation units in view of the calculated failure probability.

12. The system of claim 4, wherein the service center stores in a database manufacturers of the machine and apparatus or the parts thereof in the plurality of power generation units and superiority with regard to reliability and maintenance capacity of the manufacturers and prepares an operation and maintenance plan for each of the power generation units in view of the superiority of the manufacturers stored in the database when evaluating the machine and apparatus or the parts thereof.

16. The system of claim 4, wherein the service center obtains the plant data for every plurality of the power generation unit in a predetermined time interval.

17. A system for aiding the preparation of operation and maintenance plans for a power generation installation comprising:

a power generation unit, means for storing plant data at a desired timing of the power generation unit, means for storing design data of the power generation unit and means for calculating a power generation efficiency based on the stored plant data and design data.

18. A system for aiding the preparation of operation and maintenance plans for a power generation installation comprising:

a power generation unit, means for storing plant data at a desired timing of the power generation unit, and means for evaluating the performance of the power generation unit based on an estimated process value estimated on a machine and apparatus model by making use of the plant data and the actually measured process value from the plant data.

19. A system for aiding the preparation of operation and maintenance plans for a power generation installation comprising:

a power generation unit, means for storing plant data at a desired timing of the power generation unit, means for calculating remaining lifetime of the power generation unit or the parts of the power generation unit from the plant data, and at least one of means for presenting exchange timing of the power generation unit or the parts of the power generation unit based on the calculated remaining lifetime and means for presenting an operation condition of the power generation unit based on the calculated remaining lifetime.

20. A method for aiding the preparation of operation and maintenance plans for a power generation installation including a power generation unit comprising:

a step of storing plant data at a desired timing of the power generation unit, a step of storing design data of the power generation unit and a step of calculating a power generation efficiency based on the stored plant data and design data.

21. A method for aiding the preparation of operation and maintenance plans for a power generation installation including a power generation unit comprising:

a step of storing plant data at a desired timing of the power generation unit, and a step of evaluating the performance of the power generation unit based on an estimated process value estimated on a machine and apparatus model by making use of the plant data and the actually measured process value from the plant data.

22. A method for aiding the preparation of operation and maintenance plans for a power generation installation including a power generation unit comprising:

a step of storing plant data at a desired timing of the power generation unit, a step of calculating remaining lifetime of the power generation unit or the parts of the power generation unit from the plant data, and at least one of steps of presenting exchange timing of the power generation unit or the parts of the power generation unit based on the calculated remaining lifetime and of presenting an operation condition of the power generation unit based on the calculated remaining lifetime.