110kV高压电缆的局部放电在线监测

110 kV High Voltage Cable Partial Discharge On-line Monitoring

为了及时、准确地掌握电缆绝缘故障情况,有必要对电缆线路进行在线监测。介绍了超高频局部放电在线监测系统的信号采集装置、测量原理及数据传输原理。通过运用该系统对110 kV五凌七线电缆进行局部放电在线监测,准确地找出了电缆绝缘缺陷,检测效果较好。

In order to grasp timely and accurately the situation of cable＇s insulation fault the on-line monitoring of cable line is necessary. The ultrahigh frequency partial discharge on-line monitoring system is introduced including the signal collecting equipment, principles of measurement and data transmission. The system has been applied in the partial discharge on-line monitoring of the cable in 110 kV Wu-ling-qi line,which has found the insulation defect of the cable and thus has better detection effect.