基于小信号电路的虚拟同步发电机控制策略  

Control strategy of virtual synchronous generator based on small signal circuit

作　　者：相东昊 薛易 闫旭 陈元 张帅 XIANG Donghao;XUE Yi;YAN Xu;CHEN Yuan;ZHANG Shuai(State Grid Dongying Power Supply Company,Dongying 257000,China;Heilongjiang University of Science and Technology School of Electrical and Control Engineering,Harbin 150022,China;State Grid Chun'an Power Supply Company,Hangzhou 311700,China)

机构地区：[1]国网东营供电公司,山东东营257000 [2]黑龙江科技大学电气与控制工程学院,哈尔滨150022 [3]国网淳安县供电公司,杭州311700

出　　处：《黑龙江电力》2022年第2期134-141,共8页Heilongjiang Electric Power

基　　金：黑龙江省高等教育教学改革研究项目(项目编号:SJGY20200643)。

摘　　要：采用基于小信号电路对虚拟同步机主电路功率环进行设计,建立其小信号分析模型。针对虚拟同步机功率环相互耦合参数整定难问题,提出一种不增加线路阻抗的环路解耦控制,并在此基础上分别对功率环路参数进行定量分析和设计。同时针对无功功率分配不均匀的问题,加入负载电压负反馈控制环节,以此减小负载电压波动。在Matlab/Simulink仿真平台上分别搭建单机虚拟同步发电机的仿真模型和两机VSG仿真模型,验证所提控制策略的有效性。The main circuit power loop of virtual synchronous machine is designed based on small signal circuit,and its small signal analysis model is established.Aiming at the problem that it is difficult to set the coupling parameters of virtual synchronous machine power loop,a loop decoupling control without increasing line impedance is proposed,and the power loop parameters are quantitatively analyzed and designed.At the same time,aiming at the problem of uneven reactive power distribution,a load voltage negative feedback control link is added to reduce the load voltage fluctuation.The simulation model of single machine virtual synchronous generator and two machine VSG simulation model are built on Matlab/Simulink simulation platform to verify the effectiveness of the proposed control strategy.

关 键 词：虚拟同步发电机 环路解耦 小信号电路 功率环路参数 

分 类 号：TM464[电气工程—电器]