Arbitrage control system for two or more available power sources

• US 9,605,591 B2
• Filed: 10/17/2003
• Issued: 03/28/2017
• Est. Priority Date: 10/09/2000
• Status: Active Grant

• Current Assignee: Energy Transfer Group LLC (Energy Transfer Operating, L.P.)
• Original Assignee: Energy Transfer Group LLC (Energy Transfer Operating, L.P.)
• Inventors: Warren, Kelcy L., Warren, Mike
• Primary Examiner(s): BORISSOV, IGOR N
• Application Number:
  US10/688,614
• Publication Number:
  US 20040098142A1
• Time in Patent Office: 4,911 Days
• Field of Search: 290 4 R- 4 D, 290/40.A, 290/40.B, 290/40.C, 290/40.D, 290/51, 290/52, 318/153, 318/156, 700/287, 700/291, 700/75, 700/22, 705/400, 705/7.35, 705/1.1, 705/412
• US Class Current: 1/1
• CPC Class Codes: F01D 15/10 Adaptations for driving, or combinations with, electric generators
• CPC Class Codes: F02C 6/00 Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
• CPC Class Codes: F02C 7/275 Mechanical drives
• CPC Class Codes: H02J 3/008 involving trading of energy or energy transmission rights
• CPC Class Codes: H02J 3/06 Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid

Abstract

The present invention provides an arbitrage control system for two or more available power sources (106, 108) that enables the automatic or manual control of one or more multi-source systems (202) to take advantage of price differentials across commodities, locations and/or time. The present invention selects a power source for a device or delivery point (110) from two or more available power sources (106, 108) by analyzing market and operational data (406). A power source (106 or 108) for the device or delivery point (110) is then selected from the two or more available power sources (106, 108) based on a set of financial parameters (408). If the device or delivery point (110) is not already connected to the selected power source, one or more signals are sent (418) to switch the device or delivery point (110) to the selected power source. The arbitrage controller (102) includes a user interface (300), market interface (302), multi-source interface (304), database (306) and processor (308). The processor (308) is communicably coupled to the user interface (300), the market interface (302), the multi-source interface (304) and the database (306).

Claims

1. A computerized method for selecting a mechanical power source for a shaft-driven device from two or more available mechanical power sources, the method comprising the steps of:

providing the shaft-driven device connected to the two or more available mechanical power sources via one or more couplings and one or more drive shafts, wherein the two or more available mechanical power sources comprise at least one motor/generator coupled to an electrical network connection and at least one mechanical power source selected from the group consisting of one or more engines, one or more motors, and one or more turbines;

providing a processor communicably coupled to a database and one or more interfaces to the two or more available mechanical power sources, the shaft-driven device and the one or more couplings;

(a) receiving market and operational data related to the two or more available mechanical power sources, the shaft-driven device, the one or more couplings and the electrical network connection;

(b) analyzing the market and operational data related to the two or more available mechanical power sources, the shaft-driven device by the processor, the one or more couplings and the electrical network connection;

(c) selecting the mechanical power source for the shaft-driven device from the two or more available mechanical power sources based on a set of financial parameters by the processor, wherein the set of financial parameters comprises an estimated operational cost for the at least one motor/generator and the at least one mechanical source, and a projected potential revenue from using the at least one mechanical source to drive both the shaft-driven device and the at least one motor/generator to provide electricity to the external network connection; and

(d) whenever the shaft-driven device is not already connected to the selected mechanical power source, the processor (1) determines whether it is profitable to switch the shaft-driven device to the selected mechanical power source based on the projected potential revenue and a projected cost associated with switching to the selected power source, a time period and one or more guidelines, and (2) physically switches the shaft-driven device to the selected mechanical power source by automatically sending one or more control signals to the one or more couplings whenever it is profitable to switch the shaft-driven device to the selected mechanical power source.

2. The method as recited in claim 1, further comprising the step of updating a display.

3. The method as recited in claim 1, further comprising the step of repeating steps (a), (b), (c) and (d).

4. The method as recited in claim 3, wherein steps (a), (b), (c) and (d) are periodically repeated.

5. The method as recited in claim 3, wherein steps (a), (b) and (c) are repeated whenever new market or operational data related to the two or more available mechanical power sources is received.

6. The method as recited in claim 1, wherein the market and operational data is selected from the group consisting of historical operating data, current operating data, contract data, market data and financial data.

7. The method as recited in claim 1, wherein the set of financial parameters comprises one or more operating models.

8. The method as recited in claim 1, wherein the set of financial parameters includes operational cost data, switching cost data, minimum return, projections, market buy/sell prices, contract buy/sell prices, fuel costs, electricity costs, target demand, maximum demand, minimum connect times for each available mechanical power source, maximum switching cycle over a specified period of time, emission limits, audible noise limits or user input data.

9. The method as recited in claim 1, wherein the one or more control signals are sent via computer network, a communications network, a wireless communications link, a direct connection or combination thereof.

10. The method as recited in claim 1, wherein the one or more control signals are manually sent or implemented.

11. The method as recited in claim 1, wherein the shaft-driven device is selected from the group consisting of a shaft-driven compressor and a shaft-driven pump.

12. The method as recited in claim 1, wherein the two or more available mechanical power sources and the shaft-driven device comprise a multi-source system.

13. The method as recited in claim 12, wherein steps (a), (b), (c) and (d) are performed for two or more multi-source systems.

14. The method as recited in claim 12, wherein the multi-source system comprises:

a first and second power source;

a first switch or coupling selectively connecting the first power source to the device or delivery point;

a second switch or coupling selectively connecting the second power source to the device or delivery point; and

a multi-source control system that monitors and/or controls the first power source, the second power source, the first switch or coupling, the second switch or coupling and the device or delivery point.

15. The method as recited in claim 1, wherein:

the two or more available power sources comprise a second network connection, one or more electricity sources, and a combination of the second network connection and the one or more electricity sources;

one or more electricity transfer devices are connected to the one or more electricity sources; and

the device or delivery point comprises one or more third network connections, the one or more third network connections connected to the second network connection and the one or more electricity transfer devices.

16. The method as recited in claim 15, further comprising the step of determining whether provide electricity from the one or more electricity sources to a first network connection connected to the one or more electricity sources and the one or more electricity transfer devices.

17. The method as recited in claim 15, wherein the one or more electricity transfer devices is selected from the group consisting of one or more phase-shifting transformers, one or more static transfer devices and one or more motor-generator packages.

18. The method as recited in claim 15, wherein the first network connection and the second network connection are equivalent metering points connected to an electricity transmission network.

19. The method as recited in claim 15, wherein the one or more third network connections are electricity distribution feeders.

20. The method as recited in claim 1, wherein:

the device or delivery point comprises a machine;

the two or more available power sources comprise an engine and a motor/generator;

the engine coupled to the machine; and

the motor/generator coupled to the machine and an electrical network connection.

21. The method as recited in claim 20, wherein the engine is selected from the group comprising a turbine and a variable speed engine.

22. The method as recited in claim 20, wherein the engine is coupled to the machine with a clutch, a coupling or a gearbox.

23. The method as recited in claim 20, wherein the motor/generator is coupled to the machine with a clutch, a coupling or a gearbox.

24. An apparatus for selecting a mechanical power source for a shaft-driven device from two or more available mechanical power sources comprising:

a user interface;

a market interface;

a multi-source interface comprising one or more interfaces to the two or more available mechanical power sources, the shaft-driven device, and one or more couplings;

a database;

a processor communicably coupled to the user interface, the market interface, the multi-source interface and the database, wherein the processor (a) receives market data from the market interface and operational data related to the two or more available mechanical power sources, the shaft-driven device, the one or more couplings and an electrical network connection from the multi-source interface or the database, (b) analyzes the market and operational data related to the two or more available mechanical power sources, the shaft-driven device, the one or more couplings and the electrical network connection, (c) selects the mechanical power source for the shaft-driven device from the two or more available mechanical power sources based on a set of financial parameters, wherein the set of financial parameters comprises an estimated operational cost for at least one motor/generator and at least one mechanical source, and a projected potential revenue if the at least one mechanical source to drive both the shaft-driven device and the at least one motor/generator to provide electricity to the external network connection and (d) whenever the shaft-driven device is not already connected to the selected mechanical power source, (1) determines whether it is profitable to switch the shaft-driven device to the selected mechanical power source based on the projected potential revenue and a projected cost associated with switching to the selected mechanical power source, a time period and one or more guidelines and (2) physically switches the shaft-driven device to the selected mechanical power source by automatically sending one or more control signals via the multi-source interface to the one or more couplings whenever it is profitable to switch the shaft-driven device to the selected mechanical power source; and

wherein the shaft-driven device is connected to the two or more available mechanical power sources via the one or more couplings and one or more drive shafts, wherein the two or more available mechanical power sources comprise the at least one motor/generator coupled to the electrical network connection and the at least one mechanical power source selected from the group consisting of one or more engines, one or more motors, and one or more turbines.

25. The apparatus as recited in claim 24, wherein the processor updates a display via the user interface.

26. The apparatus as recited in claim 24, wherein the multi-source interface comprises a multi-source control system.

27. The apparatus as recited in claim 24, wherein:

the processor monitors and controls the two or more available mechanical power sources, and the device via the multi-source interface.

28. The apparatus as recited in claim 24, wherein the processor periodically repeats the analysis and selection process.

29. The apparatus as recited in claim 27, wherein the processor repeats the analysis and selection process whenever new market or operational data related to the two or more available mechanical power sources is received.

30. The apparatus as recited in claim 24, wherein the market and operational data is selected from the group consisting of historical operating data, current operating data, contract data, market data or financial data.

31. The apparatus as recited in claim 24, wherein the set of financial parameters comprises one or more operating models.

32. The apparatus as recited in claim 24, wherein the set of financial parameters includes operational cost data, switching cost data, minimum return, projections, market buy/sell prices, contract buy/sell prices, fuel costs, electricity costs, target demand, maximum demand, minimum connect times for each available mechanical power source, maximum switching cycle over a specified period of time, emission limits, audible noise limits or user input data.

33. The apparatus as recited in claim 24, wherein the one or more control signals are sent via computer network, a communications network, a wireless communications link, a direct connection or combination thereof.

34. The apparatus as recited in claim 24, wherein the one or more control signals are manually sent or implemented.

35. The apparatus as recited in claim 24, wherein the shaft-driven device is selected from the group consisting of a shaft-driven compressor and a shaft-driven pump.

36. The apparatus as recited in claim 24, wherein the two or more available mechanical power sources and the shaft-driven device comprise a multi-source system.

37. The apparatus as recited in claim 24, wherein the processor performs the analysis and selection process for two or more multi-source systems.

38. The apparatus as recited in claim 37, wherein the multi-source system comprises:

a first and second power source;

a first switch or coupling selectively connecting the first power source to the device or delivery point;

a second switch or coupling selectively connecting the second power source to the device or delivery point; and

a multi-source control system that monitors and/or controls the first power source, the second power source, the first switch or coupling, the second switch or coupling and the device or delivery point.

39. The apparatus as recited in claim 24, wherein:

the two or more available power sources comprise a second network connection, one or more electricity sources, and a combination of the second network connection and the one or more electricity sources;

one or more electricity transfer devices are connected to the one or more electricity sources; and

the device or delivery point comprises one or more third network connections, the one or more third network connections connected to the second network connection and the one or more electricity transfer devices.

40. The apparatus as recited in claim 39, wherein the processor determines whether to provide electricity from the one or more electricity sources to a first network connection connected to the one or more electricity sources and the one or more electricity transfer devices.

41. The apparatus as recited in claim 39, wherein the one or more electricity transfer devices is selected from the group consisting of one or more phase-shifting transformers, one or more static transfer devices and one or more motor-generator packages.

42. The apparatus as recited in claim 39, wherein the first network connection and the second network connection are equivalent metering points connected to an electricity transmission network.

43. The apparatus as recited in claim 39, wherein the one or more third network connections are electricity distribution feeders.

44. The apparatus as recited in claim 24, wherein:

the device or delivery point comprises a machine;

the two or more available power sources comprise an engine and a motor/generator;

the engine is coupled to the machine; and

the motor/generator is coupled to the machine and an electrical network connection.

45. The apparatus as recited in claim 44, wherein the device is selected from the group consisting of a compressor and a pump.

46. The apparatus as recited in claim 44, wherein the engine is selected from the group comprising a turbine and a variable speed engine.

47. The apparatus as recited in claim 44, wherein the engine is coupled to the machine with a clutch, a coupling or a gearbox.

48. The apparatus as recited in claim 44, wherein the motor/generator is coupled to the machine with a clutch, a coupling or a gearbox.

49. The apparatus as recited in claim 24, wherein:

the device or delivery point comprises a machine;

the two or more available power sources comprise an engine and a motor/generator;

the engine is coupled to the motor/generator; and

the motor/generator is coupled to the machine and an electrical network connection.

50. The apparatus as recited in claim 49, wherein the device is selected from the group consisting of a compressor and a pump.

51. The apparatus as recited in claim 49, wherein the engine is selected from the group comprising a turbine and a variable speed engine.

52. The apparatus as recited in claim 49, wherein the engine is coupled to the machine with a clutch, a coupling or a gearbox.

53. The apparatus as recited in claim 49, wherein the motor/generator is coupled to the machine with a clutch, a coupling or a gearbox.

54. A computer program embodied on a non-transitory computer readable medium and executed by a processor for selecting a mechanical power source for a shaft-driven device from two or more available mechanical power sources, the computer program comprising:

a code segment for receiving market data and operational data related to the two or more available mechanical power sources, the shaft-driven device, one or more couplings and an electrical network connection;

a code segment for analyzing market and operational data related to the two or more available mechanical power sources, the shaft-driven device, the one or more couplings and the electrical network connection;

a code segment for selecting the mechanical power source for the shaft-driven device from the two or more available mechanical power sources based on a set of financial parameters, wherein the set of financial parameters comprises an estimated operational cost for the at least one motor/generator and the at least one mechanical source, and a projected potential revenue from using the at least one mechanical source to drive both the shaft-driven device and the at least one motor/generator to provide electricity to the external network connection;

a code segment for whenever the shaft-driven device is not already connected to the selected mechanical power source, (1) determining whether it is profitable to switch the shaft-driven device to the selected mechanical power source based on the projected potential revenue and a projected cost associated with switching to the selected mechanical power source, a time period and one or more guidelines, and (2) physically switching the shaft-driven device to the selected mechanical power source by automatically sending one or more control signals to one or more couplings via one or more interfaces communicably coupled to the processor whenever it is profitable to switch the shaft-driven device to the selected mechanical power source; and

wherein the shaft-driven device is connected to the two or more available mechanical power sources via the one or more couplings and one or more drive shafts, wherein the two or more available mechanical power sources comprise at least one motor/generator coupled to an electrical network connection and at least one mechanical power source selected from the group consisting of one or more engines, one or more motors, and one or more turbines.

55. The computer program as recited in claim 54, further comprising a code segment for updating a display.

56. The computer program as recited in claim 54, further comprising a code segment for repeating the analysis, selecting and sending processes.

57. The computer program as recited in claim 56, wherein the analysis, selecting and sending processes are periodically repeated.

58. The computer program as recited in claim 56, wherein the analysis, selecting and sending processes are repeated whenever new market or operational data related to the two or more available mechanical power sources is received.

59. The computer program as recited in claim 54, wherein the market and operational data is selected from the group consisting of historical operating data, current operating data, contract data, market data and financial data.

60. The computer program as recited in claim 54, wherein the set of financial parameters comprises one or more operating models.

61. The computer program as recited in claim 54, wherein the set of financial parameters includes operational cost data, switching cost data, minimum return, projections, market buy/sell prices, contract buy/sell prices, fuel costs, electricity costs, target demand, maximum demand, minimum connect times for each available mechanical power source, maximum switching cycle over a specified period of time, emission limits, audible noise limits or user input data.

62. The computer program as recited in claim 54, wherein the one or more control signals are sent via computer network, a communications network, a wireless communications link, a direct connection or combination thereof.

63. The computer program as recited in claim 54, wherein the one or more control signals are manually sent or implemented.

64. The computer program as recited in claim 54, wherein the shaft-driven device is selected from the group consisting of a shaft-driven compressor and a shaft-driven pump.

65. The computer program as recited in claim 54, wherein the two or more available mechanical power sources and the shaft-driven device comprise a multi-source system.

66. The computer program as recited in claim 65, wherein the analysis, selection and sending processes are performed for two or more multi-source systems.

67. The computer program as recited in claim 65, wherein the multi-source system comprises:

a first and second power source;

a first switch or coupling selectively connecting the first power source to the device or delivery point;

a second switch or coupling selectively connecting the second power source to the device or delivery point; and

a multi-source control system that monitors and/or controls the first power source, the second power source, the first switch or coupling, the second switch or coupling and the device or delivery point.

68. The computer program as recited in claim 54, wherein:

the two or more available power sources comprise a second network connection, one or more electricity sources, and a combination of the second network connection and the one or more electricity sources;

one or more electricity transfer devices are connected to the one or more electricity sources; and

the device or delivery point comprises one or more third network connections, the one or more third network connections connected to the second network connection and the one or more electricity transfer devices.

69. The computer program as recited in claim 68, further comprising a code segment for determining whether to provide electricity from the one or more electricity sources to a first network connection connected to the one or more electricity sources and the one or more electricity transfer devices.

70. The computer program as recited in claim 68, wherein the one or more electricity transfer devices is selected from the group consisting of one or more phase-shifting transformers, one or more static transfer devices and one or more motor-generator packages.

71. The computer program as recited in claim 68, wherein the first network connection and the second network connection are equivalent metering points connected to an electricity transmission network.

72. The computer program as recited in claim 68, wherein the one or more third network connections are electricity distribution feeders.

73. A computer program as recited in claim 54, wherein:

the device or delivery point comprises a machine;

the two or more available power sources comprise an engine and a motor/generator;

the engine coupled to the machine; and

the motor/generator coupled to the machine and an electrical network connection.

74. The computer program as recited in claim 73, wherein the engine is selected from the group comprising a turbine and a variable speed engine.

75. The computer program as recited in claim 73, wherein the engine is coupled to the machine with a clutch, a coupling or a gearbox.

76. The computer program as recited in claim 73, wherein the motor/generator is coupled to the machine with a clutch, a coupling or a gearbox.