HYBRID CIRCUIT BREAKER, HYBRID CIRCUIT BREAKER SYSTEM, AND CIRCUIT BREAKER METHOD

WIPO Patent Application WO/2021/119938

A1

A hybrid circuit breaker (100), a hybrid circuit breaker system, and a circuit breaker method. The hybrid circuit breaker (100) comprises: a first mechanical contact (MC1); a semiconductor circuit breaker (MSS), which is connected to the first mechanical contact (MC1); an energy absorber (AC), which is connected in parallel to the semiconductor circuit breaker (MSS); a second mechanical contact (MC2), which is connected to the other end of the semiconductor circuit breaker (MSS); an auxiliary semiconductor circuit breaker (ASS), which is connected in parallel to the second mechanical contact (MC2); and a controller. When a power system experiences a ground fault, the controller controls the semiconductor circuit breaker (MSS) to disconnect, then controls the second mechanical contact (MC2) to disconnect, then controls the auxiliary semiconductor circuit breaker (ASS) to close before the second mechanical contact (MC2) is disconnected and to disconnect after the second mechanical contact (MC2) is disconnected, and then controls the first mechanical contact (MC1) to disconnect. The hybrid circuit breaker may be safely operated and has lower costs.

DU FENG (CN)
BECKERT THOMAS (CN)
YAO YUAN (CN)
PANG JIANGUO (CN)

PCT/CN2019/125698

June 24, 2021

December 16, 2019

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SIEMENS AG (DE)
SIEMENS LTD CHINA (CN)

H02H3/087; H01H33/59; H02H7/26; H02H9/02

WO2019212125A1

2019-11-07

CN110265986A	2019-09-20
CN109888743A	2019-06-14
CN110048377A	2019-07-23
CN108565845A	2018-09-21
CN104137211A	2014-11-05
CN104901269A	2015-09-09

KANGXIN PARTNERS, P.C. (CN)

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