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Grid interconnection device, grid interconnection system, and electric power control system

  • US 7,840,313 B2
  • Filed: 01/29/2008
  • Issued: 11/23/2010
  • Est. Priority Date: 01/30/2007
  • Status: Expired due to Fees
First Claim
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1. A grid interconnection device that converts electric power from a power supply device into predetermined alternating-current power and, interconnects the power supply device to a power distribution system, the grid interconnection device comprising:

  • a detector configured to detect islanding of the power supply device; and

    a receiver configured to receive power failure information including local area information indicative of an area in which a power failure occurs, through a predetermined transmission path,a determination unit configured to determine whether or not local area information contained in the power failure information is different from local area information Indicative of the interconnected power distribution system,wherein the detector enhances detection sensitivity for the islanding when the determination unit determines that the local area information Included in the power failure information differs from the area information indicative of the interconnected power distribution system.

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