高压电力电缆事故回流线接地端子发热缺陷分析

为保证电力电缆事故回流线安全运行，根据发热原理，采用红外热成像仪对一起110kV变电站站内联络电缆事故回流线发热缺陷原因进行检测分析，并对事故回流线的作用进行计算分析，从设计上论证了取消变电站站内联络电缆事故回流线的可行性。考虑到深圳电网生产运行实际情况，从施工和运行维护角度提出避免此类缺陷的应对处理措施及相关建议。

Analysis on Calorification Defect of Grounding Terminal of Accident Return Cable of High Voltage Power Cable

For ensuring safe operation of accident return cable of power cable, according to calorification principles, this pa- per analyzes reason for calorification defect of the accident return cable of link cable in one 110 kV substation and proceeds calculation analysis on function of the accident return cable. It proves feasibility of cancelling accident return cable from the angle of design. Considering of practical operation of Shenzhen power grid, it proposes handling measures and related sugges- tions to avoid this kind of defects in aspects of construction and operational maintenance.