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Title:
SYSTEM AND METHOD FOR DETECTING ISOLATED OPERATION OF DISPERSED POWER SUPPLY
Document Type and Number:
Japanese Patent JP2012157130
Kind Code:
A
Abstract:

To detect an isolated operation of a dispersed power supply inexpensively without influencing a distribution system.

A system for detecting an isolated operation of a dispersed power supply includes: a signal injection apparatus that, in a distributing substation for supplying power from a secondary side of a power transformer to a distribution line via a first breaker, has a first voltage transformer for transforming an injection signal synchronized with a predetermined phase of a commercial power supply for injection into a secondary zero phase circuit of the power transformer; and a signal detection apparatus that, in consumer equipment having the dispersed power supply connected to the distribution line via a second breaker, has a second voltage transformer for detecting a zero phase voltage on the distribution line and detects a component of the injection signal included in the zero phase voltage.


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Inventors:
DATE YOSHIAKI
Application Number:
JP2011000013130
Publication Date:
August 16, 2012
Filing Date:
January 25, 2011
Export Citation:
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Assignee:
CHUGOKU ELECTRIC POWER
International Classes:
H02J3/38
Domestic Patent References:
JP2003250226A2003-09-05
JP2004072863A2004-03-04
JP2001054240A2001-02-23
JPH11252806A1999-09-17
JP2000014017A2000-01-14
JPH10164758A1998-06-19
JP2002027671A2002-01-25
JP2003250226A2003-09-05
JP2004072863A2004-03-04
JP2001054240A2001-02-23
JPH11252806A1999-09-17
Attorney, Agent or Firm:
一色国際特許業務法人