中文摘要：

为了提高对三相不平衡负荷电能质量问题的有效治理,介绍了基于同步对称分量法的不平衡负荷的补偿方法,并研究了具有分相补偿能力的静止无功补偿装置（SVC）。通过对汽车工业点焊机负荷的实测数据介绍了三相不平衡负荷的电能质量问题,并针对点焊机的不平衡补偿进行了动态模拟试验。试验结果表明,设计的不平衡负荷补偿装置不仅具有较好的动态跟踪性能,且具有良好的补偿效果,值得在实际工程应用中推广。

英文摘要：

To improve the efficiency of the power quality control for three-phase unbalanced load,the method of compensation based on synchronous symmetrical component for unbalanced load is introduced.And the SVC with the ability of controlling single phase is researched.The power quality of unbalanced load is proposed by the testing data of spot welding device of automobile industry.Moreover,dynamic simulating experiment of unbalanced compensation for spot welding device is presented.The experimental results demonstrate that the SVC device for the compensation of unbalanced load has the quality of both good dynamic tracking performance and favorable compensation effect,so that it is worthwhile to be widely used in power engineering.