基于广州北部地区配电线路故障跳闸原因分析及对策的研究

Research on Distribution Lines Fault Tripping Cause Analysis and Countermeasures Based on the Northern Part of Guangzhou Area

为提高广州北部地区配电线路供电可靠性,通过分析总结广州市从化区配电线路的运行情况,系统介绍了从化区10 kV配电线路常见的故障跳闸类型,重点分析了温泉供电所配电网的基本情况和故障跳闸成因等内容。同时,结合10 kV配电线路日常工作的运维经验和现有国内主要研究资料,找准配电线路故障跳闸急需解决的主要问题,制定了符合研究区域实际情况的改善10 kV配电线路故障跳闸率措施和方法。尤其是研制和应用了一种架空线路快速移动小物体探测驱赶装置,通过一整年的时间对照主要问题逐一落实整改措施,并最终取得了一定成效。2022年度研究区域的中压线路故障跳闸率和客户平均停电时间大幅降低。另外,针对实施措施过程中暴露的问题和不足提出了后续整改提升建议。

To improve the reliability of distribution lines in the northern part of the Guang-zhou Area, the operation of distribution lines in the Conghua District of Guangzhou City was analyzed and summarized, the common fault trip types of 10kV distribution lines in Conghua District are introduced systematically, the basic situation of distribution network and the cause of fault trip in Wenquan Power supply station are emphatically analyzed. At the same time, combined with the daily operation experience and the existing domestic main research data of 10 kV distribution lines, find out the main problems that need to be solved urgently, the measures and methods to improve the failure trip rate of 10 kV distribution lines according to the actual conditions of the study area are formulated. In particular, a device for detecting and driving small fast-moving objects on over-head lines has been developed and applied, through a whole year against the main problems one by one to implement rectification measures, and finally achieved some results. In 2022, the failure trip rate of medium voltage lines and the average power cut time of customers in the study area have been greatly reduced. In addition, this article proposes suggestions for subsequent rectification and improvement in response to the problems exposed during the implementation of measures.