CA2279047A1 - Command and control system and method for multiple turbogenerators - Google Patents

Command and control system and method for multiple turbogenerators Download PDF

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Publication number
CA2279047A1
CA2279047A1 CA002279047A CA2279047A CA2279047A1 CA 2279047 A1 CA2279047 A1 CA 2279047A1 CA 002279047 A CA002279047 A CA 002279047A CA 2279047 A CA2279047 A CA 2279047A CA 2279047 A1 CA2279047 A1 CA 2279047A1
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Prior art keywords
turbogenerators
command
control system
turbogenerator
individual
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Granted
Application number
CA002279047A
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French (fr)
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CA2279047C (en
Inventor
Edward C. Edelman
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Capstone Green Energy Corp
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Capstone Turbine Corp
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Priority to CA002677758A priority Critical patent/CA2677758A1/en
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Publication of CA2279047C publication Critical patent/CA2279047C/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

A command and control system and method for multiple turbogenerators in a grid parallel system includes a master controller to start, sequence, coordinate power commands, and provide fault handling to each of the individual turbogenerators and the specific control modes. A
bi-directional power meter, that measures the load consumption (or production when a turbogenerator system is installed) in a building or application, may also be utilized. This power meter can provide a reference or setpoint to the master controller for controlling the individual turbogenerators.

Claims (24)

1. A command and control system for a plurality of turbogenerators, comprising:
a plurality of individual turbogenerators, each of said plurality of individual turbogenerators having a controller;
a command and control system bus, each of said plurality of individual turbogenerator controllers operably connected to said command and control system bus;
a plurality of disconnect switches, a disconnect switch provided in each operable connection of an individual turbogenerator controller to said command and control bus;
a bi-directional power meter;
a master controller operably associated with each of the turbogenerator controllers and with said bi-directional power meter to control the individual turbogenerators in a selected control mode; and a junction box operably connecting an electric utility, said power meter, the output of the plurality of individual turbogenerators, and a load.
2. The command and control system of claim 1, and in addition:
a timed relay operably associated with said command and control system bus, said bi-directional power meter, and said junction box to prevent the feedback of electrical power to the electric utility.
3. The command and control system of claim 1 wherein said selected control mode is a utility load following mode in which utility power consumption and turbogenerator power generation are compared to produce an error signal which is integrated over a defined specified time to produce a power demand signal.
4. The command and control system of claim 1 wherein said selected control mode is a utility base load mode in which a defined utility power signal and the power meter signal are compared to produce an error signal which is integrated over a defined specified time to produce a power demand signal.
5. The command and control system of claim 1 wherein said selected control mode is a base load mode in which the power meter signal and a base load demand signal are compared to produce an error signal which is integrated over a defined specified time to produce a power demand signal.
6. The command and control system of claim 1 wherein said selected control mode includes the starting, stopping and loading of each of said plurality of individual turbogenerators.
7. The command and control system of claim 1 wherein said master controller includes a sequencing and control logic system.
8. The command and control system of claim 7 wherein said sequencing and control logic system includes a proportional-plus-integrated control to regulate power demand.
9. The command and control system of claim 6 wherein the start sequencing is based on the use time of each of said plurality of individual turbogenerators.
10. The command and control system of claim 9 wherein the turbogenerator with the least use time is started first.
11. The command and control system of claim 9 wherein the turbogenerator with the most use time is shut down first.
12. The command and control system of claim 6 wherein the starting of the turbogenerators is staggered to minimize total power draw requirements.
13. The command and control system of claim 6 wherein a turbogenerator is automatically restarted in the event of a fault shutdown.
14. The command and control system of claim 6 wherein an inactive turbogenerator is automatically restarted in the event of a fault shutdown of an active turbogenerator.
15. The command and control system of claim 1 wherein said selected control mode includes power hysterisis bands, rate limits and setpoints integrated over time.
16. A method of commanding and controlling the operation of a plurality of individual turbogenerators, each with a turbogenerator controller, comprising the steps of:
measuring the power production from the plurality of turbogenerators; and sequencing the operation of the individual turbogenerators with a master controller.
17. The method of commanding and controlling the operation of a plurality of turbogenerators of claim 16 wherein said sequencing step is to meet a power demand.
18. The method of commanding and controlling the operation of a plurality of turbogenerators of claim 16 wherein said sequencing step is to meet a user defined setpoint.
19. The method of commanding and controlling the operation of a plurality of turbogenerators of claim 16 wherein said sequencing step includes preventing repeated starting and stopping of individual turbogenerators with hysterisis bands, rate limiting, and setpoint integration.
20. The method of commanding and controlling the operation of a plurality of turbogenerators of claim 16 wherein said sequencing step includes limiting start attempts of a failed turbogenerator with a fault counter.
21. The method of commanding and controlling the operation of a plurality of turbogenerators of claim 16 wherein said sequencing step includes balancing the run time of each individual turbogenerator.
22. The method of commanding and controlling the operation of a plurality of turbogenerators of claim 16 wherein said sequencing step includes running an individual turbogenerator in an idle state to optimize transient response.
23. The method of commanding and controlling the operation of a plurality of turbogenerators of claim 16 wherein said sequencing step includes regulating the load output of each individual turbogenerator to maximize efficiency of the system.
24. The method of commanding and controlling the operation of a plurality of turbogenerators of claim 16 wherein said sequencing step includes operating the load output of all turbogenerators, except for the last to start turbogenerator, at maximum output, and regulating the last to start turbogenerator to maintain the power demand setpoint.
CA2279047A 1998-10-27 1999-07-29 Command and control system and method for multiple turbogenerators Expired - Lifetime CA2279047C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002677758A CA2677758A1 (en) 1998-10-27 1999-07-29 Command and control system and method for multiple turbogenerators

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/181,389 US6169334B1 (en) 1998-10-27 1998-10-27 Command and control system and method for multiple turbogenerators
US09/181,389 1998-10-27

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002677758A Division CA2677758A1 (en) 1998-10-27 1999-07-29 Command and control system and method for multiple turbogenerators

Publications (2)

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CA2279047A1 true CA2279047A1 (en) 2000-04-27
CA2279047C CA2279047C (en) 2011-01-11

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CA002677758A Abandoned CA2677758A1 (en) 1998-10-27 1999-07-29 Command and control system and method for multiple turbogenerators
CA2279047A Expired - Lifetime CA2279047C (en) 1998-10-27 1999-07-29 Command and control system and method for multiple turbogenerators

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US (2) US6169334B1 (en)
EP (1) EP0998005A1 (en)
JP (1) JP2000134994A (en)
CA (2) CA2677758A1 (en)

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