城区电力电缆接头故障检测装置准确度试验研究

Test Research on Accuracy Test of Power Cable Joint Fault Detection Device in Urban Area

为了保证城区电力电缆的正常工作,在电缆铺设完成后需进行接头故障测试。传统的电缆接头故障检测装置难以准确定位电缆接头故障点,导致检测装置准确度偏低。针对以上问题,提出一种使用脉冲电流法,测量城区电力电缆接头故障检测装置准确度的方法。依据试验需求介绍了基于脉冲电流法测量原理的电缆接头故障检测装置的软、硬件的设计过程。利用所设计的检测装置对城区电力电缆线路的多种故障进行测试,试验结果表明,所设计的电缆接头故障检测装置可以准确判断电缆短路、断路等故障类型,并能够准确定位电缆线路的故障点。

In order to ensure the normal operation of urban power cables, joint failure tests should be carried out after laying cables. The traditional cable joint fault detection device is difficult to locate the cable connector fault location accurately, resulting in low accuracy of the detection device. In view of the above problems, a method of measuring the accuracy of power cable joint fault detection device in urban area by pulse current method is proposed. The design process of the hardware and software of the cable joint fault detection device based on the pulse current method is introduced according to the test requirements. The test results show that the designed cable connector fault detection device can accurately determine the fault types of the cable short circuit, circuit breakage and so on, and can accurately locate the fault point of the cable line.