Mining stopes use long power cables and lots of heavy excavating equipment, which produce a lot of harmonics seriously contaminating power source to cause voltage fluc-tuation, low voltage at the end of lines, difficult startup of equipment and frequent failures of electrical devices. Adopting the MSVC dynamic reactive compensation and harmonic treatment integrated device has improved electric power quality and ensured power safety for production.%矿山采场供电线路长，重型采掘设备使用较多，产生大量谐波，严重污染电源，造成电压波动，线路末端电压低，设备启动困难，电器故障频发，采用MSVC型动态无功补偿及谐波治理成套装置改善了电能质量，确保了生产用电安全。
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