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Title:
SHUTOFF VALVE-BASED HYBRID CURRENT LIMITER CAPABLE OF FORCING DIVERSION OF CURRENT
Document Type and Number:
WIPO Patent Application WO/2018/036214
Kind Code:
A1
Abstract:
A shutoff valve-based hybrid current limiter capable of forcing diversion of a current comprises a current-limiting branch, a steady-state conduction branch, an arc current processing branch, and a lightning arrester branch which are arranged in parallel. The current-limiting branch comprises a current-limiting resistor (R) and an inductor (LS) connected in series. The steady-state conduction branch comprises an ultra-high-speed mechanical switch (K) for transmitting a load current and diverting a fault current. The arc current processing branch comprises a full bridge circuit for assisting the steady-state conduction branch to divert a fault current. Upon occurrence of a power system failure, the shutoff valve-based hybrid current limiter capable of forcing diversion of a current injects, by means of the arc current processing branch, a reverse current into the steady-state conduction branch, such that the steady-state conduction branch can be reliably turned off without being affected by an arc voltage.

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Inventors:
WEI XIAOGUANG (CN)
CHEN LONGLONG (CN)
TANG GUANGFU (CN)
HE ZHIYUAN (CN)
ZHAO YAN (CN)
GAO YANG (CN)
YANG BINGJIAN (CN)
Application Number:
PCT/CN2017/084491
Publication Date:
March 01, 2018
Filing Date:
May 16, 2017
Export Citation:
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Assignee:
GLOBAL ENERGY INTERCONNECTION RES INSTITUTE (CN)
STATE GRID CORP CHINA (CN)
International Classes:
H02H9/02
Foreign References:
CN103414175A2013-11-27
CN101515710A2009-08-26
CN103346531A2013-10-09
US3737724A1973-06-05
Other References:
JIANG, DAOZHUO ET AL.: "A Scheme for Current-limitin Hybrid DC Circuit Breaker", AUTOMATION OF ELECTRIC POWER SYSTEMS, vol. 38, no. 4, 25 February 2014 (2014-02-25), pages 65 - 68
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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