摘要
在分析了现有电压二次回路采用的环网布置及三联空开在保护改造和定检时存在的问题,提出了增加电压二次回路汇总柜,从而将原环网布置改为辐射状布置和使用单相空开的改进措施,并对改进后的辐射型网络进行了选型和整定分析,对于减小电压二次回路短路造成的危害具有重要作用。
The paper analyses the problems of existing ring network and three-phase linkage air switch used in PT secondary-circuit when it＇s transformed and regularly repaired, and some improvements such as increasing PT secondary-circuit control cubicle to change the ring network into radiation network and using single-phase air switch.Then the setting calculation and selection of equipments are discussed. And it＇s very important for reducing effects of PT secondary-circuit fault.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2008年第22期111-113,共3页
Power System Protection and Control
