异步电动机无功功率补偿技术

The Technique of Compensating Capacitance for Reactive Power of Asynchronous Motor

摘要: 异步电动机为感性负载，这行时要消耗一定的无功功率，使得电动机的功率因数不高，造成电能的大量浪费。如果给电动机补偿电容，就能减少无功功率，同时由于补偿后的总电流减小，使线路的有功损耗也有所减少，因此无功补偿技术具有很高的经济价值．本文分析了无功功率对电网的影响，并根据异步电动机的特征和对无功功率补偿的要求，给出了无功功率补偿电容的几种计算方法．

Abstract: Analyzing the influences of reactive power on electric network,and according to characteristics of asynchronous motor and requirement of compensating capacitance for reactivc powcr,this paper gives several simple and useful methods to calculate the compensating capacitance.