直流断路器用快速机械开关的试验研究

Test Study of High-Speed Switch for Direct Current Circuit Breaker

根据张北500 kV柔性输电工程及混合式直流断路器技术要求,分析了混合式直流断路器快速机械开关应用工况设计要求,并确定试验参数。提出了满足混合式高压直流断路器要求的快速机械开关动态耐压性能及满足系统工况要求特殊电流耐受试验原理的试验方法,设计了试验回路,分析了试验方法的可行性。该试验方法及回路设计对直流断路器的设计研发具有指导性。

Based on the technical requirements of the 500 kV flexible transmission project and the hybrid direct current circuit breaker in Zhangbei,this paper analyzed the design requirements for the application conditions of high-speed mechanical switch of the hybrid direct current circuit breaker and determined the test parameters.This paper proposed the dynamic pressure-resistant properties of high-speed mechanical switch meeting the requirement of hybrid high-voltage direct current circuit breaker and the requirement of the system working condition,the test method of special current tolerance test principle.The test circuit was designed and the feasibility of test method was analyzed.The test method and circuit design are instructive to the design and development of direct current circuit breaker.