DSTATCOM补偿电流检测算法与仿真研究  

Algorithm and simulation for detecting compensation current of DSTATCOM

作　　者：陆海强 叶森 郭振 张有兵[2] 谢路耀[2] 徐偲 LU Hai-qiang;YE Sen;GUO Zhen;ZHANG You-bing;XIE Lu-yao;XU Cai(Technology Research and Development Center,Jiaxing Heng Chuang Electric Equipment Co.,Ltd.,Jiaxing 314033,China;College of Information Engineering,Zhejiang University of Technology,Hangzhou 310023,China)

机构地区：[1]嘉兴市恒创电力设备有限公司技术研发中心,浙江嘉兴314033 [2]浙江工业大学信息工程学院,浙江杭州310023

出　　处：《电子设计工程》2018年第17期107-111,共5页Electronic Design Engineering

基　　金：浙江省自然科学基金资助项目(LY16E070005)

摘　　要：针对配电网三相负荷不平衡对整个台区造成的危害,采用电力电子型装置来治理不平衡问题,对DSTATCOM补偿电流检测算法进行了研究。首先建立了电容分裂式DSTATCOM的数学模型,然后提出了一种基于瞬时对称分量法的补偿电流检测方法,分析了直流侧电压稳定及直流侧上下电容的均压问题对指令电流检测的影响,最后通过Matlab/Simulink搭建了仿真模型,仿真结果表明,本文所提基于瞬时对称分量法的电流检测算法能够在线性不平衡环境下准确检测出所需的指令电流,并具有良好的检测精度,证实了该方法的正确型与有效性。Aiming at the harm of three-phase unbalance load to the whole zoom area in the distribution network,power electronic devices are used to deal with this issue,and the compensation current detection algorithm for DSTATCOM is studied.Firstly,the a mathematical model of capacitor splitting DSTATCOM is established in this paper,then a compensation current detection method based on instantaneous symmetrical components is proposed,at the same time,the influence of the voltage stability and the voltage balance between the upper and lower capacitors in the DC side on referential current detection is analyzed.Finally,the simulation model is built by Matlab/Simulink,and the simulation results show that the current detection algorithm based on instantaneous symmetrical component method can accurately detect the required instruction current in nonlinear unbalanced environment,and has good detection accuracy,which proves the correctness and validity of the proposed method.

关 键 词：配电网 三相负荷不平衡 检测算法 三相四线制 瞬时对称分量法 

分 类 号：TN701[电子电信—电路与系统]