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农用10KV配电线路是目前我国县级供电企业电力设施的重要组成部分,担负着农村供电的重要任务。它具有点多、线长、面广等特点。10KV线路的事故跳闸问题一直困扰着大多数县级供电企业,它不仅严重威胁供电安全,给企业造成重大的经济损失,而且严重影响到广大城乡居民的正常生产、生活用电。 一、事故原因分析 某县共有农用10KV线路36条,分布在县辖8座变电站,共800余公里。1993年农用10kV配电线路跳闸统计情况如下。 农用10kV配电线路全年共跳闸343次。非计划停运次数共423次,其中:速断跳闸280次,占线路跳闸总数的81.6％（含接地）。占非计划停运次数的66.2％。过流跳闸
The agricultural 10KV distribution line is an important part of the power facilities of county-level power supply enterprises in our country, shouldering the important task of rural power supply. It has a little more, long line, a wide range of features. The accident tripping of 10KV lines has plagued most county-level power supply enterprises. It not only poses a serious threat to the power supply safety and causes serious economic losses to the enterprises, but also seriously affects the normal production and living electricity consumption of the majority of urban and rural residents. First, the cause of the accident analysis County a total of 36 lines of agricultural 10KV, distributed in the county jurisdiction 8 substations, a total of 800 km. 1993 10kV distribution line tripping statistics are as follows. Agricultural 10kV distribution lines tripled a total of 343 times a year. A total of 423 unplanned outages, of which: quick trip trip 280 times, accounting for 81.6% of the total number of line trips (including ground). Accounting for 66.2% of unplanned outages. Overcurrent trip