煤矿井下供电系统无功补偿和功率因数调节方法

Method of Reactive Power Compensation and Power Factor Adjustment for Underground Power Supply System in Coal Mine

针对没有考虑电容组投切对系统产生的影响、投入电容器后电流和电压波动较大、补偿效果较差的问题,设计了煤矿井下供电系统无功补偿和功率因数调节方法。依据无功补偿原理,设计补偿方法以及补偿目标。基于模糊控制方法,协调设置输入、输出参数,调节功率因数,并对输出的参数进行反模糊化处理,以此补偿供电系统。实验结果表明,该方法在补偿和调节后能够稳定电压,有效降低电容动作次数,大大提高了供电系统工作的稳定性,可应用到煤矿井下供电系统无功补偿中。

Aiming at the problems that the influence of capacitor bank switching on the system is not considered,the current and voltage fluctuate greatly after the capacitor is put into operation,and the compensation effect is poor,the method of reactive power compensation and power factor adjustment of underground coal mine power supply system was designed.According to the reactive power compensation principle,the reactive power compensation method and compensation target were designed.Based on the fuzzy control method,the input and output parameters were set coordinately,adjusted the power factor and the output parameters were processed with anti fuzzification,so as to compensate the power supply system.The experimental results show that the method can stabilize the voltage after compensation and regulation,effectively reduce the number of capacitor action,greatly improve the stability of the power supply system,and can be applied to the reactive power compensation of coal mine power supply system.