从电力机车数据库1983～1984年统计的故障类型中,可知电线路的故障占有相当大的比例。如1983年全路电力机车电线路故障引起的机破为总机破件数的19.4％,发生的临修为总件数的7.1％。1984年电线路故障引起的机破为总件数的25％,临修是总件数的8.3％。如果再看看宝鸡电力机务段近十年来的统计资料(如表1所示),不难看出,虽然经过努力,机 From the type of fault statistics of electric locomotive database from 1983 to 1984, it can be seen that the fault of electric line occupies a considerable proportion. For example, in 1983, 19.6% of the total number of breakdowns caused by the failure of the electric locomotive electric line was broken down to 7.1% of the total number of cases. In 1984, the breakage caused by electrical line breakdown was 25% of the total number of pieces, and the temporary repair was 8.3% of the total pieces. If we take a look at the statistics of Baoji Electric Locomotive over the past 10 years (as shown in Table 1), it is easy to see that although after hard work, the machine