Invention Grant
- Patent Title: Detection system and detection method of distributed generation islanding based on power frequency carrier
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Application No.: US13885686Application Date: 2011-10-31
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Publication No.: US09614364B2Publication Date: 2017-04-04
- Inventor: Biyao Huang , Jianqi Li , Guojun Liu , Zhihui Wang , Nan Quan , Xiaofeng Qu , Tao Zhao , Licheng Wang
- Applicant: Biyao Huang , Jianqi Li , Guojun Liu , Zhihui Wang , Nan Quan , Xiaofeng Qu , Tao Zhao , Licheng Wang
- Applicant Address: CN Beijing CN Beijing
- Assignee: STATE GRID CORPORATION OF CHINA,China Electric Power Research Institute
- Current Assignee: STATE GRID CORPORATION OF CHINA,China Electric Power Research Institute
- Current Assignee Address: CN Beijing CN Beijing
- Agency: Platinum Intellectual Property LLP
- Priority: CN201010547452 20101117
- International Application: PCT/CN2011/001818 WO 20111031
- International Announcement: WO2012/065359 WO 20120524
- Main IPC: H02J3/08
- IPC: H02J3/08 ; H02H3/38 ; H02H1/00 ; H02H7/28 ; H02J3/38 ; H02J13/00
Abstract:
A detection system of distributed generation islanding based on power frequency carrier, the detection system comprising: a power frequency carrier signal generating device; a power frequency carrier signal detection device; a signal coupling transformer; a substation bus; a distribution power generator (DG); and a safety isolation breaker, wherein the power frequency carrier signal generating device comprises a voltage and current monitor circuit, the power frequency carrier signal generating device is connected with the signal coupling transformer through four three phase four line power cables, and the signal coupling transformer is connected with substation bus through 3 power cables.
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