31.5kV GIS三工位开关控制方式探讨

本文介绍了六里坪变电所31.5kVGIS三工位开关的原理和作用,并对该设备的二次控制方式运用逻辑关系图和状态表进行了分析,指出由于设计中采用了错误的状态表(或者逻辑关系),运行中除了4种正常开关控制方式以外,增加了4种非法控制方式,影响了设备安全运行。针对存在的问题,提出了改进方案,在实际运行中取得了较好的效果。

This text introduces the principles and functions of three-position disconnecting switch of 31.5 kV GIS in Liuliping substation, analyzes the secondary control mode of the device through the diagrams of logical relation and table of status, points out that the equipment safety operation is affected by incorrect design for adopting false status table and additional 4 illegal control modes to 4 normal control modes on switches. The improvement plan was put forward and gained good result.