基于可调Q因子的煤矿井下电力系统谐波检测与抑制系统设计

摘要

Aiming at the problem of harmonic disturbance to power system in coal mine, and also consuming more reactive power, at the same time, based on the instantaneous reactive power theory of harmonic detection method in three-phase four-wire circuit application limitations, the use of adjustable Q-factor wavelet transform to improve the instantaneous reactive power theory of total harmonic content detection.Using MATLAB/SIMULINK to create three-phase four-wire system active filter simulation model, it is applied to the harmonic detection module of the active filter, set the corresponding simulation parameters, according to the simulation results analysis of the active filter harmonic suppression effect, a good improvement of the coal mine power quality.%针对谐波对煤矿井下电力系统产生严重扰动并且还耗费较多无功等问题,同时结合基于瞬时无功功率理论的谐波检测方法在三相四线制电路的应用局限性,采用可调Q因子小波变换改进瞬时无功功率理论对谐波总含量进行检测.运用MATLAB/SIMULINK创建三相四线制有源滤波器的仿真模型,将其使用到有源滤波器的谐波检测模块中,设置相应的仿真参数,根据仿真结果分析该有源滤波器的谐波抑制效果,很好的改善了煤矿电能质量.