基于残差的虚拟同步机多机互联分层补偿控制策略  

A Stratified Compensation Control Strategy for Virtual Synchronous Machine Interconnection Based on Residual

作　　者：胡长斌[1] 王高伟 罗珊娜 范辉 陆珩 李学成 马瑞 HU Changbin;WANG Gaowei;LUO Shanna;FAN Hui;LU Heng;LI Xuecheng;MA Rui(College of Electrical and Control Engineering,North China University of Technology,Haidian District,Beijing 100144,China;Hebei Electric Power Supply Co.,Ltd.,Shijiazhuang 050022,Hebei Province,China)

机构地区：[1]北方工业大学电气与控制工程学院,北京市海淀区100144 [2]国网河北省电力有限公司,河北省石家庄市050022

出　　处：《中国电机工程学报》2024年第S01期253-263,共11页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家重点研发计划项目(2021YFE0103800);市教委基本科研业务费项目(KM201710009002);北方工业大学校内专项(110051360024XN151-76)。

摘　　要：针对虚拟同步机多机互联系统中所存在的因负载扰动导致的高频电流扰动问题和因线路参数摄动造成的无功不均分问题,该文提出一种基于残差的分层补偿控制策略。首先,基于逆变器互联拓扑建立互联逆变器的数学模型,分析系统中的高频扰动和无功不均分问题;其次,基于互联逆变器的数学模型设计残差生成器,并将残差生成器生成的残差通过高通滤波器得到高频残差分量,将残差减去高频残差分量得到基频残差分量;然后,从扰动对消的角度设计电力电子层高频扰动补偿控制器,用高频残差驱动,抑制高频扰动;同时,设计等效虚拟阻抗补偿控制器,用基波残差驱动,基于互联逆变器间的信息层通信,对其进行一致性优化,使得线路参数摄动时逆变器输出的无功也能均分;最后,通过实验验证所提架构的有效性和可行性。To address the high-frequency current disturbance caused by load disturbances and the uneven reactive power distribution caused by line parameter perturbations in virtual synchronous machine multi machine interconnected systems,a residual based hierarchical compensation control strategy is proposed.Firstly,based on the inverter interconnection topology,the mathematical model of the interconnected inverters is established,and the high-frequency disturbance and reactive power imbalance problems in the system are analyzed.Secondly,a residual generator is designed based on the mathematical model of the interconnected inverters,and the residual generated by the residual generator is used to obtain the high-frequency residual component through a high-pass filter.The high-frequency residual component is subtracted from the residual to obtain the fundamental residual component.Then,from the perspective of disturbance cancellation,a power electronic layer highfrequency disturbance compensation controller is designed,which is driven by high-frequency residual to suppress high-frequency disturbances.At the same time,an equivalent virtual impedance compensation controller is designed,driven by fundamental residual.Based on the information layer communication between interconnected inverters,consistency optimization is carried out to ensure that the reactive power output of the inverter can also be evenly distributed when the line parameters are perturbed.Finally,the effectiveness and feasibility of the proposed architecture are verified through experiments.

关 键 词：互联系统 参数摄动 分层控制 残差生成器 一致性 

分 类 号：TM71[电气工程—电力系统及自动化]