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

• US 7,152,005 B2
• Filed: 04/12/2005
• Issued: 12/19/2006
• 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: Fujimura, Hidekazu, Furukawa, Masao, Shimizu, Katsuhito, Hayasaka, Yasushi, Hayashi, Yoshiharu
• Primary Examiner(s): Hoff, Marc S.
• Assistant Examiner(s): Desta, Elias
• Application Number:
  US11/103,608
• Publication Number:
  US 20050246068A1
• Time in Patent Office: 616 Days
• Field of Search: 702/60, 702/179, 702182-186, 702/188, 731/12, 700/108, 700/286, 705/412, 340/286.01, 604/03
• US Class Current: 702/60
• 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 judgment 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 plurality of power generation installations each including a gas turbine provided with a compressor, a combustor and a turbine comprising:

a machine model database which stores data of a machine model including a compressor, a combustor and a turbine;

means for estimating an output based on information relating to flow rate of fuel, a shaft rotation number and flow rate and temperature of suction air contained in plant data respectively obtained from the plurality of power generation installations by making use of data in the machine model database;

means for comparing power generation cost converted from the estimated output result with power generation cost determined from a measured output value; and

means for preparing an operation plan for the plurality of power generation installations based on a comparison result of the power generation cost so as to reduce the power generation costs determined from the measured output value.

2. A system for aiding the preparation of operation and maintenance plans for a power generation installation according to claim 1, wherein a process number for a process value is provided for every machine model in the machine model database.

3. A system for aiding the preparation of operation and maintenance plans for a power generation installation according to claim 1, wherein the machine model database includes data of parts, types, machine models and input and output specifications.

4. A method of aiding the preparation of operation and maintenance plans for a plurality of power generation installations each including a gas turbine provided with a compressor, a combustor and a turbine, the method comprising the acts of:

estimating an output based on information relating to flow rate of fuel, a shaft rotation number and flow rate and temperature of suction air contained in plant data respectively obtained from the plurality of power generation installations by making use of data in a machine model database which stores data of a machine model including a compressor, a combustor and a turbine;

comparing power generation cost converted from the estimated output result with power generation cost determined from a measured output value; and

preparing an operation plan for the plurality of power generation installations based on a comparison result of the power generation costs so as to reduce the power generation cost determined from the measured output value.