The paper introduces the current situation of the power supply system in Wulan Coal Mine, and following the general plan of tapping the northern potential by Ningxia Coal Mining Group Co.

本文介绍了乌兰煤矿供电系统的现状，按照宁夏煤业集团公司“北部挖潜”战略的总体部署对供电系统作出的改造方案。

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The practice verifies that the integrated automation system improve the safety and reliability of coal mine power supply.

实际运行证明，该系统提高了煤矿供电的安全性和可靠性。

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According to characteristics of the coal mine production, the article analyses the power supply system in coal mines and discusses the economic run mode of the transformers and the lines.

根据煤矿生产的特点，对煤矿供电系统进行了分析，对变压器、线路的经济运行方式进行了探讨。

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