煤矿电能质量综合治理研究

Research on power quality comprehensive treatment for coal mine

针对现有煤矿电网电能质量存在谐波污染和电压波动等问题,提出了一种基于SVG的煤矿电能质量综合治理方法。该方法基于正交变换理论实现有功、无功电流直接控制,可提高动态无功补偿过程的精度,且能抑制电网频率波动的影响。仿真结果表明,该方法能抑制非线性负载产生的谐波,有效改善了煤矿电网的综合电能质量。

For problems of harmonics pollution and voltage fluctuation existed in power quality of coal mine,apower quality comprehensive treatment method based on SVG for coal mine was proposed.The method uses orthogonal transformations theory to realize direct control of active and reactive current,can improve precision of dynamic reactive power compensation,and can suppress influence of grid frequency fluctuation.The simulation results show that the proposed comprehensive treatment method can suppress harmonics caused by nonlinear loads,which improves the comprehensive power quality of coal mine power grid.