Research on new method of traveling wave fault location for XLPE cable
Shi Zhentang1, Sun Jin1, Yan Tingchun2, Li Dechu3
1. SINOPEC Dalian Petroleum and Chemical Research Institute, Dalian, Liaoning 116045; 2. Shandong Kehui Electric Power Automation Limited by Share Ltd, Zibo, Shandong 255000; 3. SINOPEC Guangzhou Branch, Guangzhou 510726
Abstract：In order to solve the problem that the damage of the direct current component to the XLPE cable and the success rate of the fault detection are not high, the problems of the flushing and direct flicker are studied, then concluded that the traveling wave distance measurement is the pulse wave signal produced by the power cable fault point discharge instead of the high injection. The breakdown ability of the pulse signal depends on the capacity of the energy storage capacitor. The output current cannot effectively guarantee the low resistance state of the fault point and so on. The "AC high voltage flashover method" is proposed as the XLPE cable measurement method that is to use the high voltage AC power supply to breakdown the cable fault point, which can provide the continuous operation. Large current can ensure the continuous discharge of the fault point. The validity of this method is proved through simulation analysis and industrial experiment, and the accuracy and reliability of the distance measurement are improved.
时振堂, 孙进, 颜廷纯, 黎德初. 交联聚乙烯电缆故障行波测距新方法研究[J]. 电气技术, 2019, 20(4): 56-60.
Shi Zhentang, Sun Jin, Yan Tingchun, Li Dechu. Research on new method of traveling wave fault location for XLPE cable. Electrical Engineering, 2019, 20(4): 56-60.
2019, Vol. 20 
