基于VSG技术的参数自适应控制策略  

Parameter Adaptive Control Strategy Based on VSG Technology

作　　者：荣存玉 魏毅立[1,2] 张自雷 袁航航[1,2] RONG Cunyu;WEI Yili;ZHANG Zilei;YUAN Hanghang(School of Information Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China;Key Laboratory of Photothermal and Wind Power Generation in Inner Mongolia,Baotou 014010,China)

机构地区：[1]内蒙古科技大学信息工程学院,内蒙古包头014010 [2]内蒙古自治区光热与风能发电重点实验室,内蒙古包头014010

出　　处：《电工技术》2023年第10期45-48,共4页Electric Engineering

基　　金：内蒙古自治区科技计划项目(编号2021GG0018);内蒙古自治区高等学校科学研究项目(编号NJZY21379)。

摘　　要：在新能源占比越来越高的电力系统中,虚拟同步发电机技术得到了广泛的应用,增强了新能源在电力系统中的稳定性,但是传统的虚拟同步发电机仍然有不足之处,如控制策略参数保持不变,在暂态调节中超调量过高。利用虚拟同步发电机参数可调、易调的特性,当系统受到扰动时,在传统VSG的基础上,通过引入频率变化率和功率振荡对VSG参数进行优化,通过实时调整转动惯量和阻尼系数抑制频率波动和功率振荡,最后在MATLAB/Simulink仿真平台建立VSG系统,对比传统VSG策略,验证该方案的可行性。In the power system with an increasing proportion of new energy,virtual synchronous generator technology has been widely used,which enhances the stability of new energy in the power system.However,the traditional virtual synchronous generator still has shortcomings,such as the control strategy parameters remain unchanged,and the overshoot is too high in transient adjustment.Taking advantage of the adjustable and easy-to-adjust parameters of the virtual synchronous generator,when the system is disturbed,on the basis of the traditional VSG,the VSG parameters are optimized by introducing the frequency change rate and power oscillation,and the frequency fluctuation and power oscillation are suppressed by adjusting the moment of inertia and damping coefficient in real time.Finally,a VSG system is established on the MATLAB/Simulink simulation platform,and the feasibility of the scheme is verified by comparing the traditional VSG strategy.

关 键 词：虚拟同步发电机 LQR算法 参数优化 转动惯量 阻尼系数 

分 类 号：TM315[电气工程—电机]