System deployment and decentralized control of islanded AC microgrids without communication facility

• 作者: Baoquan LIU
• 来源期刊: 现代电力系统与清洁能源学报(英文)
• 学科: 工学
• 关键词: SYSTEM DEPLOYMENT DECENTRALIZED control AC MICROGRID Diesel Hybrid storage
• 年，卷（期）: 2019,（4）
• 页码范围: 913-922
• 页数: 10页
• 分类号: TM314

摘要

This paper proposes a novel system deployment principle for master/slave islanded alternating current(AC)microgrids,with which decentralized control can be achieved without communications.The net power of a microgrid,including active and reactive power,is metered and compensated locally and independently by its units.This can benefit a microgrid regarding system expandability,flexibility,and plug-and-play.The proposed strategy is demonstrated in a typical islanded AC microgrid with diesel generators,renewable generation,and hybrid storage.A diesel generator set with constant speed governor and static exciter runs to build up and dominate the main AC bus.An ultra-capacitor unit suppresses fastvarying power fluctuations,and the battery shares part of the slow-varying power component.The diesel generator set only provides slow-varying power within a lower limit,which can avoid dramatic accelerations and decelerations and low load-rate operation.Finally,simulations on MATLAB/Simulink are carried out to verify the proposed strategy in typical scenarios.