IP Library Granted Patent US 6,907,320
Granted Patent B2
US 6,907,320 · App. 09/791,703 · Granted Jun 14, 2005

Power plant operation control system and a power plant maintaining and managing method

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Quick Facts
Patent No.
US 6,907,320
App. No.
09/791,703
Granted
Jun 14, 2005
Kind
B2
Abstract

Quick recovery or recovery support of a faulty power generating facility by real time diagnoses such as facility failure diagnosis, supervision for failure symptoms, facility diagnosis by evaluation of performance using databases between the power generating facilities and an operation control system. The operation control system transfers information on operating status and secular characteristic changes of apparatus from power generating facilities or information from operators of selected power generating facilities. The level of a failure of a power generating facility which has a failure is evaluated and repairing information (e.g. recovery procedures, processes, required parts, inventory of the parts, possible failure causes, etc.) is automatically created from repairing information prepared in advance for each evaluation condition. The repairing information is then sent to the operation supporting section of the power generating facility.

Claims (18)

1. An operation control system for controlling a plurality of power generating facilities, comprising;

means for judging an abnormality of said power generating facilities and for gradually weighting levels of the abnormality of said power generating facilities according to operating status information of each of said power generating facilities,

means for diagnosing an abnormality caused when it is impossible to repair said power generating facilities using a control adjustment of a control apparatus for supplying processing information,

means for adjusting a preset control value of said control apparatus when it is possible to repair said power generating facilities by said control adjustment, and

means for outputting display information about said diagnosed abnormality cause or said adjusted preset control value.

2. An operation control system for collectively controlling a plurality of power generating facilities which are dispersed remotely or for controlling a distribution of power from said power generating facilities, comprising:

means for transferring information on operating status and secular characteristic changes of apparatus from said power generating facilities to a supervision system or information on operating status and secular characteristic changes of apparatus from said power generating facilities from operators of selected power generating facilities to a supervision system,

means for processing and diagnosing information transferred by said transferring means,

means for weighting the level of a failure of a power generating facility which has a failure according to the information sent from said power generating facility or from operators of selected power generating facilities,

means for diagnosing an abnormality caused when it is impossible to repair said power generating facilities using a control adjustment of a control apparatus for supplying processing information,

means for adjusting a preset control value of said control apparatus when it is possible to repair said power generating facilities by said control adjustment, and

means for outputting a display information about said diagnosed abnormality cause or said adjusted preset control value, and transmitting selected repairing information to a related operation section and an operation supporting section of said power generating facility, or outputting said adjusted preset control value to said control apparatus.

3. An operation control system according to claim 1 , wherein

said means for adjusting said preset control value executes a process status amount using a model containing an installation logic of said control apparatus, and

when a deviation between an executed result of said process status amount and an actual operation process measurement information exceeds a preset allowance value, said preset control value of said control means is adjusted.

4. An operation control system according to claim 2 , wherein

said means for adjusting said preset control value executes a process status amount using a model containing an installation logic of said control apparatus, and

when a deviation between an executed result of said process status amount and an actual operation process measurement information exceeds a preset allowance value, said preset control value of said control means is adjusted.

Assignments (2)
CONFIRMATORY ASSIGNMENT Recorded Oct 8, 2014
From: HITACHI, LTD.
To: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
Reel/Frame 033917/0209 →
CHANGE OF NAME Recorded May 22, 2014
From: HITACHI, LTD.
To: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
Reel/Frame 033003/0648 →