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

• US 8,412,384 B2
• Filed: 01/22/2009
• Issued: 04/02/2013
• Est. Priority Date: 06/22/2000
• Status: Expired due to Fees

• Current Assignee: mitsubishi hitachi power systems, ltd. (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: Hitachi, Ltd.
• Inventors: Nagafuchi, Naoyuki, Iwai, Yasushi, Ikeda, Hiraku
• Primary Examiner(s): Shectman, Sean
• Application Number:
  US12/357,574
• Publication Number:
  US 20090138324A1
• Time in Patent Office: 1,531 Days
• Field of Search: 700/17, 700/22, 700/28, 700 47- 49, 700/79, 700/80, 700/286, 700/287, 700292-295, 702 58- 62, 702181-185, 706/45, 706/907, 706/915
• US Class Current: 700/292
• CPC Class Codes: G05B 13/042 in which a parameter or coefficient is automatically adjusted to optimise the performance
• CPC Class Codes: G05B 23/0254 based on a quantitative model, e.g. mathematical relationships between inputs and outputs; functions: observer, Kalman filter, residual calculation, Neural Networks
• CPC Class Codes: G05B 23/027 Alarm generation, e.g. communication protocol; Forms of alarm
• CPC Class Codes: G05B 23/0289 Reconfiguration to prevent failure, e.g. usually as a reaction to incipient failure detection
• CPC Class Codes: G05B 23/0291 Switching into safety or degraded mode, e.g. protection and supervision after failure
• CPC Class Codes: H02J 3/001 Methods to deal with contingencies, e.g. abnormalities, faults or failures
• CPC Class Codes: H02J 3/004 Generation forecast, e.g. methods or systems for forecasting future energy generation
• CPC Class Codes: H02M 3/00 Conversion of dc power input into dc power output
• CPC Class Codes: Y02E 20/16 Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
• CPC Class Codes: Y04S 10/52 Outage or fault management, e.g. fault detection or location
• CPC Class Codes: Y10S 715/963 Calendar or scheduling

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

1. An electric power facility operation remote supporting system for remotely supporting operation of an electric power generating facility that is remotely connected by a communication line to the electric power generating facility, comprising:

a judging means for judging an abnormality or a sign of abnormality of said electric power generating facility based on at least one of information on an operating state of said electric power generating facility, and information on a time-varying characteristic of components of said electric power generating facility;

a database for storing abnormality corrective-action data corresponding to data of a plurality of abnormalities or signs of abnormality in regard to said electric power generating facility;

a determining means for determining whether recovery of the operating state by adjusting operation control setting values of said electric power generating facility is possible; and

an adjusting means for tuning operating variables for operation control of said electric power generating facility in a case where the recovery of the operating state by adjusting an operating amount of operation control setting values is possible when an abnormality or a sign of abnormality occurs, where the operating amount of the operation control setting values is a parameter of plant operation and not a parameter of sensor abnormality,

wherein said determining means and said adjusting means serve as a setting means for setting said abnormality corrective-action data corresponding to said data of a plurality of abnormalities or signs of abnormality.

2. An electric power facility operation remote supporting system according to claim 1, further including:

a transmitting means for transmitting information of at least one of a recommended operating method or an influence resulting when the abnormality or the sign of abnormality is left as is; and

a presenting means for presenting the information transmitted by said transmitting means to a customer.