Operation support system for power plant

• US 20040204908A1
• Filed: 12/29/2003
• Published: 10/14/2004
• Est. Priority Date: 12/27/2002
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Hosaka, Shunji, Matsumoto, Shigeru, Yamada, Toshihiro, Kamito, Akinori
• Granted Patent: US 7,096,156 B2
• Time in Patent Office: Days
• US Class Current: 702/182
• CPC Class Codes: F01K 13/02 Controlling, e.g. stopping or starting
• CPC Class Codes: Y02E 20/14 Combined heat and power generation [CHP]

Abstract

An operation support system for a power plant includes an input unit for inputting measured data of the power plant over a communication network, a data evaluating unit for quantitatively evaluating performance deterioration of the power plant and component equipment thereof and creating operation support data base on the input measured data, and an output unit for outputting the operation support data to a computer for confirming operation support data connected thereto over the communication network.

Claims

1. An operation support system for a power plant, comprising:

input means for inputting measured data over a communication network;

data evaluating means for quantitatively evaluating performance degradation of components thereof based on measured data input by said input means so as to create operation support data; and

output means for outputting said operation support data to a computer for confirming said operation support data connected thereto over a communication network.

2. An operation support system for a power plant according to claim 1, said data evaluating means comprising:

a heat balance model for calculating values in performance of respective plant components with heat balance computation based on the measured data of the power plant;

performance values storing means for storing values in performance of the respective plant components; and

time-lapse transition evaluating means for evaluating deteriorated states of the plant components based on transition of values in performance of the plant components over time.

3. An operation support system for a power plant according to claim 1, wherein said data evaluating means includes future prediction evaluating means for inputting stored values in performance of the plant components, and said future prediction evaluating means predicts future values in performance of the plant components based on statistical work referring to the stored values in performance.

4. An operation support system for a power plant according to claim 1, wherein said data evaluating means includes failure maintenance cost evaluating means for picking out heavily deteriorated components from the plant components, and said failure maintenance cost evaluating means obtains maintenance costs which occur in the event of the deteriorated components failing.

5. An operation support system for a power plant according to claim 1, wherein said data evaluating means includes thermal inefficiency loss evaluating means for obtaining losses due to thermal inefficiency, and said loss evaluating means obtains maintenance costs at the time of thermal inefficiency in the deteriorated state of values in performance of the plant components.

6. An operation support system for a power plant according to claim 1, wherein said data evaluating means includes a predicted power cost evaluating means for calculating power costs based on estimated heat balance in the event of changing values in performance of the plant components, component configuration thereof, or piping system configuration thereof, and power cost comparing means for comparing predicted power costs calculated by the predicted power cost evaluating means with current power costs of the power plant.

7. An operation support system for a power plant according to claim 1, wherein said data evaluating means comprises predicted power cost evaluating means for calculating amount-of-change of power costs based on estimated heat balance in the event of changing values in performance of the plant components, component configuration thereof, or piping system configuration thereof, and profit-and-loss evaluating means for calculating profit-and-loss according to the change based on amount-of-change of power costs and repair costs required for the change.

8. An operation support system for a power plant according to claim 1, wherein said data evaluating means comprises performance values storing means for storing values in performance of the plant components, future prediction evaluating means for predicting future values in performance of respective components based on statistical work using past stored values in performance by the storing means, and a simulation model for calculating future heat balance using predicted values in performance of the respective components.

9. An operation support system for a power plant including data evaluating means for inputting measured data of the power plant, said data evaluating means comprising:

a heat balance model for calculating values in performance of respective plant components with heat balance computation based on measured data of the power plant; and

a simulation model for inputting values in performance of the respective components, said simulation model obtaining process values by using values in performance of the plant components so as to estimate heat balance at the time of changing running conditions.

10. An operation support system for a power plant according to claim 9, wherein said simulation model estimates heat balance in the event of changing values in performance of the plant components, a component configuration thereof, or a piping system configuration thereof.

11. An operation support system for a power plant according to claim 9, wherein said data evaluating means includes a predicted power cost evaluating means for calculating power costs based on estimated heat balance in the event of changing values in performance of the plant components, component configuration thereof, or piping system configuration thereof, and power cost comparing means for comparing predicted power costs calculated by the predicted power cost evaluating means with current power costs of the power plant.

12. An operation support system for a power plant according to claim 9, wherein said data evaluating means comprises predicted power cost evaluating means for calculating amount-of-change of power costs based on estimated heat balance in the event of changing values in performance of the plant components, component configuration thereof, or piping system configuration thereof, and profit-and-loss evaluating means for calculating profit-and-loss according to the change based on amount-of-change of power costs and repair costs required for the change.

13. An operation support system for a power plant according to claim 9, wherein said data evaluating means comprises performance values storing means for storing values in performance of the plant components, future prediction evaluating means for predicting future values in performance of respective components based on statistical work using past stored values in performance by the storing means, and a simulation model for calculating future heat balance using predicted values in performance of the respective components.

14. An operation support system for a power plant according to claim 9, wherein said data evaluating means includes a simulation model for estimating plant thermal efficiency as to calculated parameters representing equipment performance of the plant components, a fluidic state, or power load.

15. An operation support system for a power plant according to claim 9, wherein said data evaluating means is connected to a data collection device of the power plant over a communication network.

16. An operation support system for a power plant according to claim 9, wherein said data evaluating means is connected to a computer for confirming operation support data over a communication network.