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发明授权
CN106451312B 一种500kV电缆GIS终端暂态地电位升高的抑制方法 有权

一种500kV电缆GIS终端暂态地电位升高的抑制方法
摘要：
本发明提供了一种500kV电缆GIS终端暂态地电位升高的抑制方法，包括步骤1：判断电缆GIS终端的接地方式；步骤2：当电缆GIS终端为直接接地时，采用铅封法调整电缆GIS终端与电缆的连接方式；步骤3：当电缆GIS终端为保护接地时，采用分流法调整电缆GIS终端与电缆的连接方式。与现有技术相比，本发明提供的一种500kV电缆GIS终端暂态地电位升高的抑制方法，可以保护电缆GIS终端附近工作的运行维护人员的人身安全，并避免暂态过电压对电缆GIS终端邻近安装的高频或者超高频局部放电在线监测系统的损害，有效支撑电缆状态检修工作。
摘要（英）：

The invention provides an inhibition method for the transient ground potential rise of a 500kV cable GIS terminal, and the method comprises the steps: 1, judging the grounding mode of the cable GIS terminal; 2, adjusting the mode of connection between the cable GIS terminal and a cable through employing a lead sealing method when the cable GIS terminal is directly grounded; 3, adjusting the mode of connection between the cable GIS terminal and the cable when the cable GIS terminal is in the state of protective grounding. Compared with the prior art, the method provided by the invention can protect the personal safety of an operation and maintenance worker nearby the cable GIS terminal, prevents a transient overvoltage from damaging a high-frequency or a super-high-frequency partial discharge online monitoring system nearby the cable GIS terminal, and effectively supports the state inspection and maintenance of the cable.

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