高压单芯电缆保护器在公伯峡水电站中的应用

Application of Highvoltage Single Core Cable Protector in Gongboxia Hydropower Station

公伯峡水电站主变高压侧至330 kV开关站之间的高压单芯电缆护层的接线方式是电缆一侧终端经保护器接地,另一侧终端采用直接接地方式接地,在运行过程中330 kV电缆护层接地线发生过热现象。针对接线方式中存在的问题,提出处理对策。

The wiring mode of highvoltage single core cable sheathing from main transformer high voltage side of Gongboxia hydropower station to 330kV substation adopts grounding through protector on one terminal and direct grounding the other terminal,the 330kV cable sheathing grounding wire occurred overheating phenomenon during operation.The paper proposes the problems and solution in wiring mode of highvoltage single core sheathing between main transformer highvoltage side of Gongboxia hydropower station and 330kV substation.