In order to improve the power quality, power factor and energy-saving of coal mine grid, the current situation of power supply system is analyzed at Quandian coal mine. The proposal of SVG reactive compensation device system (SVG + FC) is adopted. And the system principle and technology features are introduced. The on site operation verifies that the SVG static dynamic reactive device can quickly follow changes with load variable and brings economic benefits to coal mine.%为进一步提高煤矿电网的电能质量、功率因数及节约电能，分析了泉店煤矿供电系统的现状，采用SVG动态无功补偿装置方案，并介绍了系统原理、技术特点。经现场运行验证，SVG无功动态补偿装置具有动态快速跟随负荷变化特性，能有效提高电网的电能质量、功率因数及节约电能，给煤矿带来了明显的经济效益。
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