电力系统保护与控制2024，Vol.52Issue(23)：74-85,12.DOI:10.19783/j.cnki.pspc.240379
应用多参数协同自适应方法的虚拟同步发电机控制策略
Control strategy for a virtual synchronous generator using a multi-parameter cooperative adaptive method
摘要
Abstract
The output power and frequency of the optical storage system using virtual synchronous generator(VSG)technology will fluctuate greatly when the operating condition of the system is changed.In order to slow down power-frequency oscillation,a multi-parameter cooperative adaptive control strategy is proposed,which can effectively suppress system fluctuation.First,based on VSG small signal model,the value range of virtual inertiaJand damping coefficient D under the condition that the system meets the phase angle stability margin is derived.Secondly,considering that the active power sag coefficient Kf will change the sensitivity of the system's power-frequency characteristics,a three-parameter collaborative adaptive change function including J,D and Kf is designed.In order to realize D slowly decreasing in the second stage and further increasing in the fourth stage,the integral term of frequency difference is introduced.To further verify the applicability of this method when the system is subjected to large perturbations,VSG transient stability analysis is performed on the basis of small-signal analysis.Finally,it is verified in the simulation model of Matlab/Simulink platform for different working conditions.The simulation results show that the system stability can be well enhanced with the improved method in both large and small disturbance conditions.关键词
虚拟同步发电机/小信号模型/虚拟惯量/阻尼系数/下垂系数/自适应控制Key words
virtual synchronous generator/small signal model/virtual inertia/damping coefficient/sag coefficient/adaptive control引用本文复制引用
陈杰,程静,王维庆,黄瓷..应用多参数协同自适应方法的虚拟同步发电机控制策略[J].电力系统保护与控制,2024,52(23):74-85,12.基金项目
This work is supported by the National Key Research and Development Program of China(No.2021YFB1506900). 国家重点研发计划项目资助(2021YFB1506900) （No.2021YFB1506900）
新疆维吾尔自治区重大专项资助(2022A01001-4) （2022A01001-4）
