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以下关于自动重合闸描述正确的是( )

A
与单相重合闸配合使用时,相差高频保护与高频闭锁保护均要求单跳停信
B
长线路综合重合闸的整定时间应考虑潜供电流的影响
C
在双电源线路上,通常在检定无压的一侧也同时投入同期检定继电器,两者的触点并联工作
D
重合闸的基本启动方式是断路器控制开关位置与断路器位置不对应启动方式

答案解析

正确答案:BCD

解析:

(The third question): This question is about auto-reclosure in power systems. The correct statements are B, C, and D. Let's go through them: B. Considering the impact of backfeed current is essential when setting the auto-reclosure time for long lines. This statement is correct as backfeed current can affect the coordination of auto-reclosure. C. On double-end fed lines, it's common to apply simultaneous in-phase checking on both sides, with their contacts connected in parallel. This statement is correct as this practice ensures proper coordination and avoids unwanted reclosures. D. The fundamental start-up method for auto-reclosure is when the circuit breaker control switch position does not match the circuit breaker position. This statement is correct as it describes one of the typical start-up methods for auto-reclosure. In summary, the correct answers for the three questions are: ABD A BCD

相关知识点:

自动重合闸相关要点记牢

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