多T接电缆混合线路故障测寻分析与探讨

Analysis and discussion on fault detection of multi-t cable hybrid line

随着城市电网地不断改造和电力电缆的广泛运用,高压电力电缆对城市电网的发展起着主导作用。电缆线路的增多和改造,也使T接电缆线路也不断出现,甚至出现一条电缆线路有多个T接电缆头。电缆一旦发生故障,寻找起故障点来十分困难,由于电缆应用规模的扩大、运行年限的增长,电缆故障也会越来越频繁,这就使得每年供电企业都要花费大量的人力物力,而且还将给企业带来难以估计的停电损失。因此,如何快速、准确、经济地找出电缆故障点,一直是供电企业跟施工单位探讨的首要问题。本文结合实际运行的多T接电缆线路故障实例,对测寻方法进行深入分析研究。

With the continuous transformation of urban power grid and the widespread use of power cables, high-voltage power cables play a leading role in the development of urban power grid? The increase and renovation of cable lines also make the connection of the t-connect cable constantly appear, even a cable line has multiple t-connected cables? Cable in case of failure, find the point of failure to very difficult, due to the expansion of cable used, length of run, cable fault will be more and more frequent, this makes the power supply enterprise every year to spend a lot of manpower material resources, but also will bring enterprises difficult to estimate the power loss? Therefore, how to find out the cable fault point quickly, accurately and economically is the primary problem that the power supply enterprise and the construction unit have discussed. In this paper, a practical example of multi-t cable line fault is presented in this paper?