Multi-engine controller

• US 5,949,153 A
• Filed: 03/06/1997
• Issued: 09/07/1999
• Est. Priority Date: 03/06/1997
• Status: Expired due to Fees

• Current Assignee: Consolidated Natural Gas Service Company, Inc.
• Original Assignee: Consolidated Natural Gas Service Company, Inc.
• Inventors: Nigro, Ross F., Sprafka, Robert J., Tison, Raymond R.
• Primary Examiner(s): PALADINI, ALBERT WILLIAM
• Application Number:
  US08/812,864
• Time in Patent Office: 915 Days
• Field of Search: 307/29, 307/18, 307/11, 307/80, 307/40, 327/594, 395/182.2, 364/528.21, 364/528.22
• US Class Current: 307/29
• CPC Class Codes: H02J 3/24 Arrangements for preventing or reducing oscillations of power in networks by control effected upon a single generator H02P9/00

Abstract

A controller and method for controlling two or more electrical generators to meet the applied load, varies the activation/deactivation sequence of the generators according to and instruction set selected by time or day or other discrete event. The controller and method also control discretionary loads via a request to run process which allows the generation system to be readied for the additional load.

Claims

1. A controller for a plurality of electrical power sources which can be activated or deactivated by said controller, said controller comprising:

a processing unit, said processing unit being adapted to provide control signals to said power sources;

a first operating parameter set accessible by said processing unit;

a second operating parameter set accessible by said processing unit, said second parameter set being different from said first parameter set; and

a real-time clock accessible by said processing unit, said processing unit being adapted to receive time information from said clock, to select one of said parameter sets in response to said time information and to control said power sources according to said selected parameter set.

2. A controller according to claim 1, wherein said parameter sets each include a minimum reserve power value and a maximum excess power value.

3. A controller according to claim 1, wherein said processing unit is adapted to control a plurality of discretionary loads, said loads each having a priority value included in said parameter sets, said processing unit being adapted to operate in accordance with said priority values.

4. A controller according to claim 1, said processing unit being further adapted to activate/deactivate said power sources in response to a load requesting permission to run.

5. A controller according to claim 1, said processing unit being further adapted to activate/deactivate said power sources in response a pending fault in at least one power source.

6. A controller according to claim 1, wherein said parameter sets each include a sequence for activating/deactivating said power sources.

7. A controller according to claim 6, wherein said sequences include different orders for activating and deactivating.

8. A method for controlling a plurality of electrical power sources which can be activated or deactivated by a controller, said method comprising:

providing a first operating parameter set;

providing a second operating parameter set, said second parameter set being different from said first parameter set;

providing a real-time clock; and

activating/deactivating said power sources in accordance with one of said parameter sets based on a time input from said real-time clock.

9. A method according to claim 8, wherein said parameter sets each include a minimum reserve power value and a maximum excess power value.

10. A method according to claim 8, wherein said parameter sets each further include a priority value for each of a plurality of discretionary loads and said method further comprises controlling said loads in accordance with said priority values.

11. A method according to claim 8, further comprising activating/deactivating said power sources in response to a load requesting permission to run.

12. A method according to claim 8, further comprising activating/deactivating said power sources in response to a pending fault in a source.

13. A method according to claim 8, wherein said parameter sets each include a sequence for activating/deactivating said power sources.

14. A method according to claim 13, wherein said sequences include different orders for activating and deactivating.

15. A controller for a plurality of electrical power sources which can be activated or deactivated by said controller, said controller comprising:

a processing unit, said processing unit being adapted to provide control signals to said power sources;

a first operating parameter set accessible by said processing unit, said first parameter set including a sequence for activating/deactivating said power sources, a minimum reserve power value and a maximum excess power value;

a second operating parameter set accessible by said processing unit, said second parameter set including a sequence for activating/deactivating said power sources, a minimum reserve power value and a maximum excess power value, and said second parameter set being different from said first parameter set; and

a real-time clock accessible by said processing unit, said processing unit being adapted to receive time information from said clock, to select one of said parameter sets in response to said time information and to control said power sources according to said selected parameter set.

16. A controller according to claim 15, wherein said sequences include different orders for activating and deactivating.

17. A controller according to claim 15, said processing unit being further adapted to activate/deactivate said power sources in response to a load requesting permission to run.

18. A controller according to claim 15, said processing unit being further adapted to activate/deactivate said power sources in response a pending fault in a power source.

19. A controller according to claim 15, wherein said processing unit is adapted to control a plurality of discretionary loads, said loads each having a priority value included in said instruction sets, said processing unit being adapted to operate in accordance with said priority values.

20. A method for controlling a plurality of electrical power sources which can be activated or deactivated by a controller, said method comprising:

providing a first operating parameter set, said first parameter set including a sequence for activating/deactivating said power sources, a minimum reserve power value and a maximum excess power value;

providing a second operating parameter set, said second parameter set including a sequence for activating/deactivating said power sources, a minimum reserve power value and a maximum excess power value, and said second parameter set being different from said first parameter set;

providing a real-time clock; and

activating/deactivating said power sources in accordance with one of said instruction sets based on a time input from said real-time clock.

21. A method according to claim 20, wherein said sequences include different orders for activating and deactivating.

22. A method according to claim 20, further comprising activating/deactivating said power sources in response to a load requesting permission to run.

23. A method according to claim 20, further comprising activating/deactivating said power sources in response to a pending fault in at least one power source.

24. A method according to claim 20, wherein said instruction sets each further include a priority value for each of a plurality of discretionary loads and said method further comprises controlling said loads in accordance with said priority values.