基于PCC控制的无功补偿装置的原理与分析计算方案

The principle and analytic procedure of the reactive compensation device based on the PCC control

介绍一种采用PCC控制的新型动态无功补偿装置。电压、电流信号的测量采用可编程放大器,基准电压进行预处理,方便校正;通过求电压、电流信号的相位差值,计算得到功率因数,实现对电网的实时监控;并采用晶闸管控制投切电容器的方式,对电网功率因数进行自动补偿,提高功率因数。结果表明:采用新型动态无功补偿装置,功率因数大于0.95,改善了电能质量、降低了损耗。

Reactive compensation device, a new kind of dynamic device which can separately measure the voltage and current signals using PCC as master controller and can sample the signals using programmable amplifier, may pretreat the reference voltage in order to adjust expediently. The device, which can yield the power factor through trying the phase deference between the voltage and current signals, may realize the real-time monitoring of the electric network. In order to increase the power factor, the power factor compensation of the electric network carries out automatically through changing the capacitance in the original circuit,