韩超

[摘    要]电气预防性试验在预防电气设备故障方面具有非常重要的意义。煤矿供电系统又有一定特殊性，井下变电站大多设置在井下工作面附近，各种试验设备需要人力运送到现场，大多井下开闭所都存在试验环境潮湿、温度高、不通风，环境恶劣等共性问题。文章通过对煤矿供电系统检修时注意事项进行了总结，对各类煤矿高压电气设备预防性试验工作注意事项进行了归纳，并提出了检修及预防性试验管理措施及安全注意事项，对合理、安全进行电气设备检修及试验具有一定借鉴意义。

[关键词]煤矿;供电;检修;预防性试验

[中图分类号]TM63 [文献标志码]A [文章编号]2095–6487（2021）07–0–03

Analysis of Precautions for Maintenance and Preventive Test of high-voltage Electrical Equipment in Coal Mine

Han Chao

[Abstract]Electrical preventive test is of great significance in preventing electrical equipment failure. The power supply system of the coal mine has certain particularity. Most of the underground substations are set near the underground working surface. All kinds of test equipment need to be transported to the site. Most of the underground opening and closing stations have common problems such as humidity， high temperature， unventilation and bad environment. This paper summarizes the maintenance precautions of coal mine power supply system， analyzes the problems to be noticed in the maintenance of coal mine power supply equipment and preventive test， and puts forward the maintenance and preventive test management measures， which is of reference to electrical maintenance and testing is reasonable and safe.

[Keywords]coal mine; power supply; maintenance; preventive test

现阶段对高压电气设备的探伤（磁粉探伤机、X射线探伤机）一般都是通过电气预防性试验手段进行的，然后结合检查出的问题，通过检修或更换电气元件确保电气设备恢复正常运行。过去高压电气设备检修工作往往在每年的春季和秋季进行两次停电大检修。目前国网公司应用的检修技术比较成熟，已经可以实现带电检修，如应用带电水冲洗技术对绝缘瓷瓶清扫、无人机技术清除线路上飘挂的杂物及修剪距离供电线路过近的树木等。因煤矿供电环境具有一定的特殊性，且大多数煤矿供电系统目前还不具备带电检修作业的技术支持，因此往往还是采用停电检修的方式进行。

1 供电系统的检修注意事项

（1）首先要严格落实设备定期检测、维护、保养和……