组合电器(GIS)母线保护动作事故处理

GIS组合电器与传统敞开式电气设备相比较，有很多明显的优越性。但其所有元件均处于封闭金属壳体内，运行人员无法直接观察设备运行状态，只有通过各种遥测、遥信信号及机械位置指示来间接反映GIS内部元件实际工况。对GIS双母线接线运行变电站在某一条母线差动保护动作情况下，怎样进行正确判断分析、倒闸操作，才能避免事故的扩大提出建议，以供调度和变电运行人员参考。

Fault Treatment of Busbar Protection Device Operation on GIS

Although GIS has many obvious advantages compared with traditional opened electric equipment, the actual performance of the inner components in GIS can only be measured by various remote measurement and telesignalisation signals or mechanical location indication devices indirectly, as all of its components are placed in an enclosed metal vessel. Thus it is important to make analysis and judgment on transfer switching correctly to avoid fault evolving when the differential protection on one of the double-bus trips in a substation operated with GIS. In the last part of this paper, some suggestions for such problem have been made for operators.