一种特殊接线方式下的站变备自投故障分析与解决

Fault analysis and solution of a substation reserved auto-switch-on fault with a particuliar mode of connection

站变备用电源自动投入装置(简称站变备自投)给全站的交直流用电提供安全的保障,对电力系统安全可靠运行具有非常重要的意义。该文以粤北某500kV变电站许继CSL210B型站变备自投装置在特殊接线方式下运行中出现的误动作为例,进行了分析与探索,找出了误动作的根源,并针对许继CSL210B型站变备自投装置在该站特殊接线方式下运行的特点,充分考虑到与现有的设计相兼容,对现有备自投装置硬件的设计进行了重新设计,消除了误动作根源,保证了该500kV变电站交直流站用电的安全稳定运行。

A substations reserved auto-switch-on device,which provides a safe guarantee for power consumption of the substation, is important to the safe and reliable power supply in electric power systems.This paper takes the CSL210B reserved auto-switch-on device as an example,which was made in XJ Group Corporation has a very parculiar electric power connection. And this paper details this problem, and finds out mistake action origin, Consindering sufficiently an available design, it redsigns the device, eliminates the misaction origin, ensures the safety of 500 kV transformer substations stabilizes operation.