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发明公开
CN108365600A 混合式直流断路器系统及断路器合闸的故障线路检测方法 无效 - 驳回

混合式直流断路器系统及断路器合闸的故障线路检测方法
摘要：
本发明涉及混合式直流断路器系统及断路器合闸的故障线路检测方法，利用混合式直流断路器的转移支路有多级模块单元串联组成的特点，通过转移支路分级合闸的方式，判断避雷器中的电流大小来判断是否合闸在故障线路中，相对于现有技术，本发明在及时发现线路故障的同时，可以相对减小选用避雷器的容量，减少混合式直流断路器的经济成本。特别适用于直流断路器的重合闸时判断是否重合闸在故障线路中，避免了直接合闸在故障线路时产生较大的短路电流，有效避免故障范围扩大导致损坏其他直流设备。
摘要（英）：

The invention relates to a hybrid DC circuit breaker system and a fault line detection method for circuit breaker switching on. The transfer branch of the hybrid DC circuit breaker has a characteristic that multistage modular units are connected in series. By a manner that the transfer branch is switched on hierarchically, the current in an arrester is determined to determine whether the switchingis in a fault line. Compared with the prior art, the method can relatively reduce the capacity of the arrester and reduce the economic cost of the hybrid DC circuit breaker while detecting the line fault timely. The method is especially suitable for determine whether the reclosing is in the fault line during the reclosing of the DC circuit breaker, avoids the large short-circuit current generatedby the direct closing in the fault line, effectively avoids the damage to other DC equipment caused by the expansion of a fault range.

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