三相不平衡负载无功补偿方法的研究  

Research on Reactive Compensation Method for Unbalanced Load

作　　者：黄国栋[1] 杨仁刚[1] 冯小明[1] 

机构地区：[1]中国农业大学信息与电气工程学院,北京100083

出　　处：《电测与仪表》2011年第4期23-26,共4页Electrical Measurement & Instrumentation

基　　金："十一五"国家科技支撑计划资助项目(2006BAJ04B06)

摘　　要：针对三相不平衡负载对电力系统造成的危害,结合实际电容器的配置,利用规划的思想,本文推导出了三相四线制下新的补偿算法。该算法以有功损耗最小为目标函数,能够充分利用已有的电容器,达到最优的补偿效果。以AT91RM9200为控制器搭建了实验平台,并对实验数据进行分析和仿真,以验证该算法。实验的结果表明,这种算法既能够补偿功率因数,又能够降低三相电流的不平衡度,证明了理论推导的正确性。该方法提高了电能质量,达到了节能效果。In view of the hazards caused by three-phase unbalanced load,combined with the actual placement of the capacitor,using programming idea,the paper presents a new compensation algorithm for three-phase four-wire systems.The algorithm considers the minimization of power loss as its objective function,and the algorithm can make full use of existing capacitors to achieve optimal compensation effect.It builds an experimental platform with AT91RM9200 as the controller,analyses and simulates the experimental data.Experimental results show that the algorithm not only can compensate the power factor,but also can reduce the three-phase current unbalance,which prove the theoretical analysis.A better power quality and energy-saving can be obtained according to the algorithm.

关 键 词：不平衡负载 三相四线制 无功补偿 

分 类 号：TM714.3[电气工程—电力系统及自动化]