煤矿供配电系统谐波分析及治理

Harmonic Analysis and Treatment of Coal Mine Power Supply and Distribution System

在概述一现代化煤矿供配电系统可能产生谐波原因以及供配电系统设备电网谐波对矿井安全运行产生的不利影响及危害的基础上,进行了矿用三相三线制并联式结构有源电力滤波器的设计,谐波治理和无功补偿方案的构建,并对控制效果进行了仿真分析。结果表明,谐波对煤矿供配电系统稳定运行十分不利,改进后的并联式结构有源电力滤波器在谐波抑制和无功补偿方面具有较好的应用效果。

On the basis of summarizing the possible causes of harmonics in a modern coal mine power supply and distribution system and the adverse effects and hazards of power grid harmonics of power supply and distribution system equipment on mine safety operation,the design of mine three-phase three wire parallel structure active power filter,the construction of harmonic control and reactive power compensation scheme,and the simulation analysis of control effect were carried out.The results show that harmonics are very unfavorable to the stable operation of coal mine power supply and distribution system,and the improved parallel structure active power filter has good application effect in harmonic suppression and reactive power compensation.