Plant operation control system

• US 5,873,251 A
• Filed: 09/13/1996
• Issued: 02/23/1999
• Est. Priority Date: 09/13/1995
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Iino, Yutaka
• Primary Examiner(s): Kamen, Noah P.
• Application Number:
  US08/712,600
• Time in Patent Office: 893 Days
• Field of Search: 60/645, 60/652, 60/660, 364/492, 364/493, 364/528.21, 364/528.26
• US Class Current: 60/660
• 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

To attain a high efficiency plant production activity and further to contribute to the earth environment protection, the disclosed plant operation control system, comprises means for producing energy in a plant; means for producing products in the plant by use of the energy produced by the energy producing means; means for scheduling energy production on the basis of the production schedule of the products; means for adjusting the energy production scheduled by the energy production scheduling means on the basis of information relative to the energy; and means for outputting the energy outside of the plant according to the energy production schedule adjusted by the energy production schedule adjusting means.

Claims

1. A plant operation control system, comprising:

means for producing energy in a plant;

means for producing products in the plant by use of the energy produced by said energy producing means;

means for scheduling energy production on the basis of production schedule of the products;

means for adjusting the energy production scheduled by said energy production scheduling means on the basis of information relative to the energy; and

means for outputting the energy outside of the plant according to the energy production schedule adjusted by said energy production adjusting means.

2. The plant operation control system of claim 1, wherein said energy production schedule adjusting means adjusts the energy production scheduling means on the basis of energy value data.

3. The plant operation control system of claim 2, wherein said energy production schedule adjusting means adjusts the energy production scheduling means on the basis of energy price data.

4. The plant operation control system of claim 3, wherein said energy production schedule adjusting means outputs a command value for maximizing a total profit of both an energy sale profit and an product sale profit.

5. The plant operation control system of claim 3, wherein said energy production schedule adjusting means can adjust the energy production schedule according to fluctuations of the energy sale price.

6. The plant operation control system of claim 3, wherein said energy production schedule adjusting means comprises means for predicting the energy sale price.

7. The plant operation control system of claim 1, wherein said energy production schedule adjusting means comprises means for considering at least one of plant operating conditions, operation constraint, possible trouble conditions, and surplus energy conditions.

8. The plant operation control system of claim 1, wherein said energy production scheduling means comprises means for predicting an energy quantity required for producing the products.

9. The plant operation control system of claim 1, wherein said energy production scheduling means comprises means for predicting an energy quantity reproduced or recovered in the plant.

10. The plant operation control system of claim 1, wherein the energy is electrical energy.

21. The plant operation control system of claim 1, wherein said energy production schedule adjusting means regulates the production schedule of the products to adjust the energy production schedule.

11. A plant operation control method of producing products in a plant by use of energy generated within the plant, comprising:

a first step of setting an energy production schedule on the basis of a production schedule of the products;

a second step of adjusting the energy production schedule set in the first step on the basis of energy-related data; and

a third step of outputting part of the energy generated within the plant to the outside of the plant, according to the energy production schedule adjusted in the second step.

12. The plant operation control method of claim 11, wherein said second step includes adjusting the energy production schedule on the basis of energy value data.

13. The plant operation control method of claim 12, wherein said second step includes adjusting the energy production schedule on the basis of energy sale price data.

14. The plant operation control method of claim 13, wherein said second step further includes outputting a command value for maximizing a total profit of both an energy sale profit and a product sale profit.

15. The plant operation control method of claim 13, wherein said second step includes adjusting the energy production schedule according to fluctuations of the energy sale price.

16. The plant operation control method of claim 13, wherein said second step further includes predicting the energy sale price.

17. The plant operation control method of claim 11, wherein said second step further includes considering at least one of plant operating condition, operation constraint, possible trouble conditions, and surplus energy conditions as part of said energy related data.

18. The plant operation control method of claim 11, wherein said second step further includes predicting an energy quantity required for producing the products.

19. The plant operation control method of claims 11, wherein said second step further includes predicting an energy quantity reproduced or recovered in the plant.

20. The plant operation control method of claim 11, wherein the energy is electrical energy.

22. A plant operation control system, comprising:

an energy producer producing energy in a plant;

a product producer producing products in the plant by use of the energy produced by said energy producer;

an energy production scheduler scheduling energy production on the basis of a production schedule of the products;

an adjuster adjusting the energy production scheduled by said energy production scheduler on the basis of information relative to the energy; and

an energy outputter outputting the energy outside of the plant according to the energy production schedule adjusted by said adjuster.

23. The plant operation control system of claim 22, wherein said adjuster adjusts the energy production scheduler on the basis of energy value data.

24. The plant operation control system of claim 23, wherein said adjuster adjusts the energy production scheduler on the basis of energy price data.

25. The plant operation control system of claim 24, wherein said adjuster outputs a command value for maximizing a total profit of both an energy sale profit and a production sale profit.

26. The plant operation control system of claim 24, wherein said adjuster adjusts the energy production schedule according to fluctuations of the energy sale price.

27. The plant operation control system of claim 24, wherein said adjuster comprises a prediction section predicting the energy sale price.

28. The plant operation control system of claim 22, wherein said adjuster comprises a consideration section considering at least one of plant operating conditions, operation constraint, possible trouble conditions, and surplus energy conditions.

29. The plant operation control system of claim 22, wherein said energy production scheduler comprises a prediction section predicting an energy quantity required for producing the products.

30. The plant operation control system of claim 22, wherein said energy production scheduler comprises a prediction section predicting an energy quantity reproduced or recovered in the plant.

31. The plant operation control system of claim 22, wherein the energy is electrical energy.