Medium voltage large capacity hybrid DC circuit breaker and current limiting breaking method
A hybrid DC, high-capacity technology, applied in circuit devices, power transmission AC networks, emergency protection circuit devices, etc., can solve the problems of not having the ability to interrupt high current, not suitable for high current occasions, and long commutation process, and achieve Avoid backup protection switches, improve long-term load capacity, and improve system maintainability
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[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0025] refer to figure 1 As shown, the present invention discloses a medium-voltage large-capacity hybrid DC circuit breaker, including a quick breaking module QF, a primary transfer module LMCL, a secondary transfer module T, an energy absorption module MOV and an isolation module S, wherein the quick breaking module QF , the primary transfer module LMCL, the secondary transfer module T and the energy absorbing module MOV are connected in parallel, and then connected in series with the isolation module S. The quick breaking module QF uses an electromagnetic repulsion mechanism, the primary transfer module LMCL uses liquid metal, the secondary transfer module T uses a semiconductor switch that can be turned off, and the isolation module S uses a load switch. The quick breaking module QF and the isolation module S are connected in series to carry the load cur...
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