电容器无功补偿自动控制原理研究

Study on Automatic Control Principle of Capacitor Reactive Power Compensation

在分析目前电容器无功补偿投切控制中存在的问题及对系统无功功率需求和电压变化关系分析的基础上,提出了按照系统无功功率需求和电压变化预测值相结合的原则,进行综合判断控制电容器的投切,提高了电压和功率因数合格率。在达到控制目标的同时,减少了电容器的投切次数。

The problem exited in capacitor reactive power compensation is analyzed, relation between system reactive power demand & voltage variation is analyzed as well. As per the principle of combining system reactive power demand and voltage variation predicted value, it is suggested to make comprehensive judgment for the switching of capacitor, therefore to increase the qualified percentage of voltage and power factor. The capacitor switching time is decreased when reaching control target.