宁夏电力Issue(1)：1-10,10.DOI:10.3969/j.issn.1672-3643.2024.01.001
风-储孤岛微电网的虚拟同步电机模型预测频率波动抑制
Model predictive control for suppressing frequency fluctuations in virtual synchronous generators for wind-storage island microgrid
摘要
Abstract
With the increasing installed capacity of wind power systems in China,their proportion in the power grid is also growing.However,the high penetration rate of wind power brings about the issue of frequency stability in the grid.To address this,a multi-objective predictive control strategy using virtual synchronous machines(VSMs)is proposed.Currently,VSM control typically provides frequency support by setting virtual rotation equations,but it is difficult to achieve effective suppression of frequency fluctuations.To further reduce the threat of frequency fluctuations to grid stability,this paper proposes a continuous control set multi-objective optimization method based on model predictive control(MPC)principles.This method utilizes the virtual synchronous machine rotation equations to establish a power prediction model,which can predict power changes during frequency fluctuations.By designing a cost function and con-sidering output constraints,the optimal power increment is obtained.This increment is then used to modify the power command,allowing the energy storage battery system to provide more active power at the point of common coupling,thereby reducing system frequency variations.Semi-physical simulation experiments demonstrate that this method effective-ly reduces system frequency fluctuations and enhances the frequency stability of wind-storage island microgrid systems.关键词
风力发电系统/虚拟同步电机/模型预测控制Key words
wind power generation system/virtual synchronous generator/model predictive control分类
信息技术与安全科学引用本文复制引用
罗美玲,韩忠修,黄伟兵,赫嘉楠,寿邵安..风-储孤岛微电网的虚拟同步电机模型预测频率波动抑制[J].宁夏电力,2024,(1):1-10,10.基金项目
国网宁夏电力有限公司科技项目(5229NX230003) （5229NX230003）
