现代电力2024，Vol.41Issue(4)：775-785,11.DOI:10.19725/j.cnki.1007-2322.2022.0328
三端口柔性多状态开关多模式平滑切换控制策略
A Control Strategy for Smooth Switching of Three-port Flexible Multi-state Switches
摘要
Abstract
The rapid development of photovoltaic(PV)and electric vehicle(EV)has caused power quality problems such as high voltage at the end of distribution network,and flexible multi-state switch(FMSS)technology based on regional flex-ible interconnection has become one of the solutions.Aiming at the fluctuation and impact of switching between PQ mode and VF mode of flexible multi-state switch,the study proposes to add inertia link and and improve phase pre-synchronization link after the state-following controller,which can realize the smooth switching of FMSS parallel and off-grid operating modes.A control strategy with the introduction of weight ad-justment is proposed to realize the smooth switching of active control and DC bus voltage control under the stable operation of the system,in respond to potential operation collapse due to feeder failure at the DC bus control terminal of FMSS.A three-port FMSS simulation model was built in MATLAB/Simulink environment to simulate and verify the proposed control strategy,and the simulation results demonstrate the seamless switching function of three-port FMSS under any feeder fault.Finally,a physical experiment platform was built to further val-idate the effectiveness of the proposed smooth switching strategy.关键词
柔性多状态开关/工作模式切换/平滑切换/惯性环节/改进预同步控制器/权值调节Key words
flexible multi-state switch/working mode switching/smooth switching/inertia link/improved pre-synchronization controller/weight adjustment分类
信息技术与安全科学引用本文复制引用
张錾,李岚,霍群海,李宁宁,王文勇,韦统振..三端口柔性多状态开关多模式平滑切换控制策略[J].现代电力,2024,41(4):775-785,11.基金项目
中国科学院战略性先导科技专项(A类)(XDA21050304).Strategic Priority Research Program of the Chinese Academy of Sciences(XDA21050304). （A类）
