Control of multiple power plants at a site to provide a distributed resource in a utility grid

a technology of power plant and power grid, which is applied in the direction of electric controllers, ignition automatic control, instruments, etc., can solve the problems of impeded efficient and economic utilization, and achieve the effect of enhancing the utilization of plants

Inactive Publication Date: 2010-10-12
HYAXIOM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]It is a further object of the invention to provide a control arrangement to optimize the interrelationship between multiple fuel c

Problems solved by technology

However, even in such configuration, the control of the fuel cells has typically been on an individual basis, with little or no provision for an integrated control arrangement to optimize the use of multiple fuel cell power plants interconnected with the utility grid and the loads.
The transit

Method used

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  • Control of multiple power plants at a site to provide a distributed resource in a utility grid
  • Control of multiple power plants at a site to provide a distributed resource in a utility grid
  • Control of multiple power plants at a site to provide a distributed resource in a utility grid

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Embodiment Construction

[0017]Referring to FIG. 1, there is depicted a simplified block diagram of a fuel cell-based power system 8 in accordance with the invention, which is readily available and utilized at a site as a distributed resource in a utility grid system. The power system 8 is connected to utility grid bus 10, and employs multiple fuel cell power plants 18 located at a common site, for supplying, with the grid 10, 3-phase power to, and through, load contactor array 13 to loads 14, usually also at the same site. In the preferred and normal instance, the fuel cell power plants 18 provide power to the loads 14 on a substantially continuous basis, irrespective of occasional disconnects of the utility grid 10 from the power plants 18 and loads 14. Switching gear, generally designated 12 and described below, includes a static switch that rapidly opens during utility grid disturbances to isolate the loads 14 and the fuel cell power plants 18 from the grid 10, and the fuel cells provide substantially c...

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Abstract

A site management system (11) is provided for a power system (8) at site in a utility distribution grid (10). The power system (8) includes multiple fuel cell power plants, e.g., fuel cells, (18) and one or more loads (14), for selective connection/disconnection with the grid (10). The site management system (11) controls the power plants (18) in an integrated manner, alternatively in a grid connected mode and a grid independent mode. The multiple power plants (18) at the site may be viewed and operated as a unified distributed resource on the grid (10). The site management system (11) provides signals representative of the present power capability (Kw Capacity—88) of each of the power plants (18), and a signal (Total Kw Capacity—95) representative of the total present power capability at the site. These power representations are used to appropriately assign power dispatch loadings to the respective fuel cellspower plants (18) in the grid connected mode and in the grid independent mode, and may also be used for load shedding.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]Reference is made here to related, patent application U.S. Ser. No. 09 / 782,402, filed Feb. 13, 2001 for System for Providing Assured Power for a Critical Load by the same inventive entities as herein and owned by the same assignee as herein, now U.S. Pat. No. 6,465,910 issued Oct. 15, 2002, which application / patent is incorporated herein by reference to the extent necessary, if at all, to provide essential and / or nonessential material.TECHNICAL FIELD[0002]This invention relates generally to power systems and to the control of fuel cell power plants, and more particularly to the control of multiple fuel cell power plants at a site. More particularly still, the invention relates to the control of multiple fuel cells at a site to provide a distributed resource in a utility grid.BACKGROUND ART[0003]Individual fuel cells have been used both experimentally and commercially in various configurations to power various electrical loads. In the mai...

Claims

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Application Information

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IPC IPC(8): G05D11/00G05D17/00H01MH02J3/24H02J3/38H02J13/00
CPCH02J3/387H02J13/0062H02J2001/004Y04S10/12Y02E60/74Y10S429/90Y02E60/7838Y02E40/72Y04S10/30Y04S40/124H02J2300/30H02J13/00002H02J3/381H02J13/00016Y02E40/70Y02E60/00H02J3/46
Inventor ROSS, RICKY M.FRAGOLA, JR., FRANCIS A.HEALY, HERBERT C.YOUNG, DOUGLAS GIBBONS
Owner HYAXIOM INC
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