自动跟踪消弧补偿装置与故障转移接地装置现场故障处理对比试验及分析

The Test and Analysis of Automatic Tracking Arc Suppression Compensation Device and Fault Transfer Grounding Device on-site Fault Treatment

文章对安装在110k V沙土变电站同一母线侧的自动消弧线圈和ZXC系列故障转移接地处理装置作了单相瞬时性和永久性接地故障处理试验。从试验结果分析可知:自动消弧线圈若残流控制不好,便无法通过消除瞬时性接地故障来提高供电可靠性;同时在永久性接地故障时,选线准确率低,导致无法切除故障线路,进而使故障点存在较大的安全风险;ZXC系列故障转移接地处理装置能对故障性质进行智能判断,不仅能及时消除瞬时性接地故障,提高供电可靠性,而且可以及时切除永久性接地故障,确保了故障点的安全。

This paper presents a single-phase instantaneous and permanent earth fault test for automatic arc-suppression coil and ZXC series fail-over grounding device installed on the same bus side of 1 lOkV Shatu substation in Jiangxi. The results show that if the residual flow control of automatic arc suppression coil is not good, it cannot eliminate the instantaneous ground fault to improve power supply reliability. At the same time, in the case of permanent earth fault, the low accuracy of the selection line will lead to the inability to remove the fault line, thus making the fault point there is a large security risk. ZXC series failover grounding device can intelligently determine the type of fault, not only can promptly eliminate the instantaneous ground fault, improve power supply reliability, and can promptly remove the permanent ground fault, to ensure the safety of the point of failure.