配电网故障下柔性多状态开关平滑切换策略  

Smooth Switching Strategy for Flexible Multi-state Switch During Distribution Network Faults

作　　者：李洋滨 粟时平[1] 龙坤 刘毅博 LI Yangbin;SU Shiping;LONG Kun;LIU Yibo(School of Electrical and Information Engineering,Changsha University of Science and Technology,Changsha 410114,Hunan Province,China)

机构地区：[1]长沙理工大学电气与信息工程学院,湖南省长沙市410114

出　　处：《现代电力》2025年第1期12-18,共7页Modern Electric Power

基　　金：国家自然科学基金资助项目(51708194)

摘　　要：随着分布式能源和微电网的快速发展,配电网控制面临诸多挑战。针对配电网故障失电所造成的微电网停电问题,提出一种柔性多状态开关端口控制切换策略。首先,构建对配网正常并网与故障离网过程的数学模型,并解析柔性多状态开关(flexible multi-state switch,FMSS)在配电网正常与发生故障两个不同运转工况下的控制策略及其工作机理;其次,研究FMSS在各种不同工况下的控制策略的平滑切换,并在原有理论的基础上引用状态跟踪控制补偿法,解决现有策略存在的局限性,进一步提出一种具有相位预同步控制的自适应控制策略,能够有效缓解配电网故障断电带来的冲击;最后,在Matlab/Simulink仿真软件中通过仿真验证了该文所提出的控制策略的有效性。With the rapid development of distributed energy and microgrid,the control of distribution network encounters numerous challenges.In this paper,we propose a flexible multistate switch port control switching strategy for micro-grid outage caused by power failures in distribution networks.Firstly,a mathematical model of normal grid-connection and fault offgrid process of distribution network is constructed.Additionally,an analysis is conducted on the control strategy and working mechanism of flexible multi-state switch(FMSS)under two different operating conditions,distribution networks in normal state and faulty state.Secondly,the smooth switching of FMSS control strategies under different working conditions is studied,and the state tracking control compensation method is introduced based on the original theory to address the limitations of the existing strategies.Then,an adaptive control strategy with phase pre-synchronization control is introduced,enabling effective mitigation of the impact caused by distribution network failure and power outage.Finally,the effectiveness of the proposed control strategy is verified through simulation experiments in Matlab/Simulink.

关 键 词：柔性多状态开关 平滑切换 状态跟踪 相位预同步 配电网 

分 类 号：TM727[电气工程—电力系统及自动化]