摘要
针对传统晶闸管投切电容器(Thyristor Switching Capacitor—TSC)的不足和煤矿井下6kV侧电能质量的要求,设计出一种中压投切电容器的无功补偿装置,根据相应公式计算出需要补偿的无功功率值并选择应投入的电容器组合,电容器组采用编码投切方式,其中预充电相控开关作为其投切开关,该装置可提高补偿速度和准确性。通过Simulink仿真,验证了预充电相控开关能在电源电压峰值时刻无涌流投切电容器,提高功率因数,且动作时间和复合开关基本相同的结论。
Aiming at the shortcomings of traditional TSC and the requirements of power quality in coal mine,this paper designs a reactive power compensation device of medium voltage switching capacitor,which can calculate the compensation of reactive power and select the capacitor combination by the corresponding formula,in addition,capacitor group uses the code switching mode where the pre-charge phase control switch is the switch.The device can improve the speed and accuracy of compensation.Through Simulink,it is proved that the pre-charge phase control has no inrush current in the peak of power supply voltage and enhances the power factor.Moreover the action time is similar to the compound switch.
出处
《电测与仪表》
北大核心
2013年第7期77-80,共4页
Electrical Measurement & Instrumentation
