水电站110kVGIS刀闸及地刀控制箱改造研究

Research on Regeneration of 110kV GIS Knife Gate and Ground Knife Control Box of Hydropower Station

湾头水电站110kV开关设备选用ZF10-126型GIS组合电器。该GIS设备运行中存在接触器故障导致电机、机构损坏问题,刀闸、地刀控制部分存在缺陷导致刀闸、地刀机构脱轨或过度挤压而变形。针对上述问题,水电站于2020年4月对GIS设备刀闸及地刀控制箱结合母线预试进行改造,改造后应用效果理想,安全经济效益显著。

ZF10-126 GIS is used for 110kV switchgear of Wantou Hydropower Station.Contactor failure in operation of this GIS equipment causes damage to motor and mechanism.Defects in the control parts of the knife lock and the ground knife result in the deformation of the knife lock and the ground knife mechanism due to derailment or excessive extrusion.In view of the above problems,in April 2020,the hydropower station retrofitted the GIS equipment knife lock and ground knife control box in combination with bus pre-test.After the retrofit,the application effect is better and the safety and economic benefits are remarkable.