电压检测型APF构成的分布式谐波治理系统稳定性分析  

Stability Analysis for Distributed Harmonic Mitigation System Composed of Voltage Detection Based Active Power Filters

作　　者：卜令岩 贾清泉[1] 田书娅 张纯江[1] 梁纪峰 赵静[4] BU Lingyan;JIA Qingquan;TIAN Shuya;ZHANG Chunjiang;LIANG Jifeng;ZHAO Jing(Key Laboratory of Power Electronics for Energy Conservation and Motor Drive of Hebei Province(School of Electrical Engineering,Yanshan University),Qinhuangdao 066004,China;State Grid Shenyang Electric Power Supply Company,Shenyang 110811,China;Electric Power Research Institute of State Grid Hebei Electric Power Supply Co.,Ltd.,Shijiazhuang 050021,China;Department of Electrical and Information Engineering,Hebei Jiaotong Vocational and Technical College,Shijiazhuang 050035,China)

机构地区：[1]电力电子节能与传动控制河北省重点实验室(燕山大学电气工程学院),河北省秦皇岛市066004 [2]国网沈阳供电公司,辽宁省沈阳市110811 [3]国网河北省电力有限公司电力科学研究院,河北省石家庄市050021 [4]河北交通职业技术学院电气与信息工程系,河北省石家庄市050035

出　　处：《电力系统自动化》2020年第21期99-106,共8页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(51877186);河北省自然科学基金资助项目(E2018203358)。

摘　　要：电力电子化配电网谐波源呈现高密度分散化态势,传统用户侧点对点治理模式不能适应。电压检测型有源电力滤波器(VDAPF)通过检测节点的谐波电压并按电导特性产生谐波治理电流,更适合分散谐波的电网侧分布式治理。文中研究了VDAPF构成的电力电子化配电网分布式谐波治理系统的稳定性问题,以及VDAPF控制参数对分布式谐波治理系统稳定性的影响。给出了分布式谐波治理系统的实现方案,并推导出该系统的线性化状态空间模型。结合灵敏度方法确定了影响系统特征值的主导控制参数,建立了主导控制参数变化的系统根轨迹,并得出影响系统稳定性的主导控制参数的取值范围。结合MATLAB仿真给出了不同控制参数下分布式谐波治理系统稳定、不稳定情况的仿真结果,验证了分布式谐波治理系统稳定问题的存在性和稳定性分析的合理性。The harmonic sources in power-electronized distribution networks present a trend of high density and decentralization.The commonly used point-to-point mitigation mode on the customer side is unsuitable.The voltage detection based active power filter(VDAPF)detects the harmonic voltage of the buses and generates the harmonic mitigation current according to conductivity characteristics,which is more suitable for grid-side distributed mitigation of decentralized harmonics.This paper studies the stability of the distributed harmonic mitigation system composed of VDAPFs for power-electronized distribution network,and the influence of control parameters of VDAPF on the stability of distributed harmonic mitigation systems.The implementation scheme of the distributed harmonic mitigation system is proposed.A linear state-space model of the system is established.Combined with the sensitivity method,the dominant control parameters affecting the eigenvalues of the system are determined.The root locus of the system with changed dominant control parameters is established,and the variation ranges of the dominant control parameters affecting the system stability are obtained with different control parameters.Based on the MATLAB simulation,the simulation results of the distributed harmonic mitigation system with different control parameters in stable and unstable cases are given,which verify the existence of the stability problem of the distributed harmonic mitigation system and the rationality of stability analysis.

关 键 词：电力电子化配电网 谐波治理 有源电力滤波器 状态空间模型 稳定性分析 

分 类 号：TM712[电气工程—电力系统及自动化]