摘要
对500 kV断路器套管TA配置、合并单元设置进行了分析,认为500 kV智能变电站原配置方案在500 kV断路器发生内部故障时,存在保护死区问题。对此提出不使用新型合并单元,而采用每组TPY型绕组各配置1台独立合并单元的解决方案。该方案中一次设备、合并单元、保护装置均独立配置,无共用设备,可靠性比原方案提高了1倍,并在内蒙古包头西500 kV智能变电站中得到成功应用。
Analyzed the TA configuration and merging unit setting on the 500 kV circuit breaker bushing,thought that 500 kV TA protection dead zone existed problems in original configuration scheme,while internal fault occurred in the 500 kV circuit breaker.A new solution was given.The new merging units were not used,but each group of TPY windings was configured with one unit of independent merging units.In the new plan,the primary equipment,the merging unit and the protective device were completely separated,without sharing equipment,and the reliability was one times higher than the original scheme.This scheme had been successfully applied in Baotou 500 kV intelligent substation in west Inner Mongolia.
出处
《内蒙古电力技术》
2017年第3期31-33,共3页
Inner Mongolia Electric Power
