Electric power generating facility operation remote supporting method and electric power generating facility operation remote supporting system

• US 8,386,212 B2
• Filed: 09/23/2008
• Issued: 02/26/2013
• Est. Priority Date: 12/05/2001
• Status: Expired due to Fees

• Current Assignee: mitsubishi hitachi power systems, ltd. (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: Hitachi, Ltd.
• Inventors: Nagafuchi, Naoyuki, Furukawa, Masao
• Primary Examiner(s): Charioui, Mohamed
• Application Number:
  US12/232,703
• Publication Number:
  US 20090037144A1
• Time in Patent Office: 1,617 Days
• Field of Search: 702/85, 702/90, 702/98, 702/99, 702/130, 702/138, 702180-184, 607/37, 607/79, 700/287
• US Class Current: 702/183
• CPC Class Codes: G05B 23/027 Alarm generation, e.g. communication protocol; Forms of alarm
• CPC Class Codes: G05B 23/0286 Modifications to the monitored process, e.g. stopping operation or adapting control
• CPC Class Codes: H02J 3/0012 Contingency detection
• CPC Class Codes: Y04S 10/52 Outage or fault management, e.g. fault detection or location

Abstract

When an abnormality or a sign of abnormality occurs in an electric power generating facility, an appropriate operating support can be made in a short time. The electric power facility operation remote supporting method in accordance with the present invention is characterized by that an abnormality or a sign of abnormality is judged based on at least one of information on an operating state of the electric power generating facility and information on time-varying characteristics of components in the electric power generating facility, and a service mode is set based on the judged information of the abnormality or the sign of abnormality, preset abnormality corrective data and preset service modes.

Claims

1. A monitoring and diagnosing apparatus of a gas turbine having a plurality of combustors, the monitoring and diagnosing apparatus comprising:

a combustion monitoring image plane to display thereon a temperature of each of the plurality of combustors;

a trouble judging unit to diagnose presence of abnormality as evaluation of combustion states of the combustors, based on changing trends of fuel-air ratios of the combustors and temperatures of the combustors;

a restoring capability evaluation judging unit, as the evaluation of the combustion states of the combustors, to judge as abnormal, with a deviation in an actually measured value from a planned value of fuel air ratio and any of a compressor air flow rate change, a fuel flow rate change or a fuel command value change departing from an allowable value;

a judging unit to judge whether a result, which is obtained by a control set value tuning supporting function unit for tuning control set values by operating a load changing operation analyzing function including therein an operating characteristic evaluation tool, falls within an allowable range of planned value, when the restoring capability evaluation judging unit, as the evaluation of the combustion states of the combustors, judges as abnormal, with a deviation in an actually measured value from a planned value of fuel-air ratio and any of a compressor air flow rate change, a fuel flow rate change or a fuel command value change departing from an allowable value; and

a sending unit to send to the gas turbine recommended control set values for controlling the combustor that was judged abnormal, when the judging unit judged that the result falls in the allowable range of the planned value.

2. The monitoring and diagnosing apparatus of claim 1, wherein the combustion monitoring plane displays a pressure distribution of the plurality of combustors.

3. The monitoring and diagnosing apparatus of claim 1, wherein the combustion monitoring plane displays an exhaust gas temperature distribution of the plurality of combustors.

4. The monitoring and diagnosing apparatus of claim 1, wherein the operating characteristic evaluation tool comprises a combination of a gas turbine dynamic simulator and a mounted control logic which are pre-tuned using test operation and operating actual data so as to simulate actual characteristics.

5. The monitoring and diagnosing apparatus of claim 1, wherein the operating characteristic evaluation tool is operated using tuning indexes obtained from pre-performed sensitivity analyses and past cases and using information from a modifying function including selecting and automatically tuning tuned items by actually measured data.

6. The monitoring and diagnosing apparatus of claim 1, further comprising a control set value tuning supporting function unit which uses the operating characteristic evaluation tool to perform tuning of the control set values, when the judging unit judged that the result falls outside the allowable range of the planned value.

7. A monitoring and diagnosing method for a gas turbine having a plurality of combustors, the method comprising:

displaying a temperature of each of the plurality of combustors on a combustion monitoring image plane;

diagnosing presence of abnormality as evaluation of combustion states of the combustors, based on changing trends of fuel-air ratios of the combustors and temperatures of the combustors;

judging whether a result, which is obtained by a control set value tuning supporting function unit for tuning control set values by operating a load changing operation analyzing function including therein an operating characteristic evaluation tool, falls within an allowable range of planned value, when a restoring capability evaluation judging unit, as the evaluation of the combustion states of the combustors, judges as abnormal, with a deviation in an actually measured value from a planned value of fuel-air ratio and any of a compressor air flow rate change, a fuel flow rate change or a fuel command value change departing from an allowable value; and

sending to the gas turbine recommended control set values for controlling the combustor that was judged abnormal, when the judging unit judged that the result falls in the allowable range of the planned value.

8. The monitoring and diagnosing method of claim 7, wherein the combustion monitoring plane displays a pressure distribution of the plurality of combustors.

9. The monitoring and diagnosing method of claim 7, wherein the combustion monitoring plane displays an exhaust gas temperature distribution of the plurality of combustors.

10. The monitoring and diagnosing method of claim 7, wherein the operating characteristic evaluation tool comprises a combination of a gas turbine dynamic simulator and a mounted control logic which are pre-tuned using test operation and operating actual data so as to simulate actual characteristics.

11. The monitoring and diagnosing method of claim 7, wherein the operating characteristic evaluation tool is operated using tuning indexes obtained from pre-performed sensitivity analyses and past cases and using information from a modifying function including selecting and automatically tuning tuned items by actually measured data.

12. The monitoring and diagnosing method of claim 7, further comprising executing a control set value tuning supporting function using the operating characteristic evaluation tool to perform tuning of the control set values, when the judging unit judged that the result falls outside the allowable range of the planned value.

13. A monitoring and diagnosing apparatus of a gas turbine having a plurality of combustors, the monitoring and diagnosing apparatus comprising:

a combustion monitoring image plane to display thereon a temperature of each of the plurality of combustors;

a trouble judging unit to diagnose presence of abnormality as evaluation of combustion states of the combustors, based on changing trends of fuel-air ratios of the combustors and temperatures of the combustors;

a judging unit to judge whether a result, which is obtained by operating a load changing operation analyzing function including therein an operating characteristic evaluation tool, falls within an allowable range of planned value, when the trouble judging unit, as the evaluation of the combustion states of the combustors, judges as abnormal, with a deviation in an actually measured value from a planned value of fuel-air ratio and any of a compressor air flow rate change, a fuel flow rate change or a fuel command value change departing from an allowable value; and

a control set value tuning supporting function unit which uses the operating characteristic evaluation tool to perform tuning of the control set values, when the judging unit judged that the result falls outside the allowable range of the planned value.

14. The monitoring and diagnosing apparatus of claim 13, wherein the combustion monitoring plane displays a pressure distribution of the plurality of combustors.

15. The monitoring and diagnosing apparatus of claim 13, wherein the combustion monitoring plane displays an exhaust gas temperature distribution of the plurality of combustors.

16. The monitoring and diagnosing apparatus of claim 13, wherein the operating characteristic evaluation tool comprises a combination of a gas turbine dynamic simulator and a mounted control logic which are pre-tuned using test operation and operating actual data so as to simulate actual characteristics.

17. The monitoring and diagnosing apparatus of claim 13, wherein the operating characteristic evaluation tool is operated using tuning indexes obtained from pre-performed sensitivity analyses and past cases and using information from a modifying function including selecting and automatically tuning tuned items by actually measured data.

18. The monitoring and diagnosing apparatus of claim 17, further comprising:

a sending unit to send to the gas turbine recommended control set values for controlling the combustor that was judged abnormal, when the judging unit judged that the result falls in the allowable range of the planned value.