一种万能式断路器双钥匙锁的设计及运用

Design and Application of Air Circuit Breaker Double-Key Lock

万能式断路器的钥匙锁附件为电力系统的用电安全及节能等方面提供保障。介绍了现有万能式断路器钥匙锁的结构及工作原理,举例说明了其在供电系统中的一些运用场景。在现有钥匙锁的基础上改进设计,提出了一种新结构的双钥匙锁,能在一些电源数量较多且联锁逻辑关系较为复杂供电系统的停电检修、电力调配及防止人员误操作等方面起到重要作用。

The key lock attachment of the air circuit breaker can provide the protection for the power system′s power safety and energy saving.The structure and working principle of the existing air circuit breaker key lock are introduced, and some examples of its application scenarios in the power supply system are given.On the basis of the existing key lock, the design is improved, and a newstructure of the double key lock is proposed, which plays an important role in the power outage maintenance, power allocation and prevention of personnel misoperation in some power supply systems with a large number of power supplies and complex interlocking logic.