配网故障情况下单三相多微网平滑切换控制
摘要：配网故障情况下,多微网平滑切换至区域自治状态是多微网稳定运行的关键技术之一。提出一种基于集散式的非计划并网转离网切换策略:首先各子微网在多微网并离网开关切断的同时,采用分散自治控制策略以减轻主电源出力负担;接着,在考虑单三相多微网不平衡度约束的情况下,通过基于改进型快速粒子群算法对光伏及负荷出力及接入情况进行混合整数规划,以实现负荷和光伏的集中式恢复。仿真结果表明,所提的集散式控制策略可有效实现单三相多微网在配网故障情况下由并网状态切换至离网状态的无缝平滑过渡。
Abstract:When the fault occurs in distribution network, it is critical for stability operation of multi-microgrids (MMGs) to transit seamlessly to regional autonomy state. In this paper, the passive-to-islanding transition strategy is proposed based on centralized-distributed control. At first, when the static switcher of multi-microgrid switches off, the decentralized autonomous control is executed in each sub-microgrid immediately to reduce the power delivered by main power sources. Then, the power output of loads and photovoltaic sources are allocated based on mixed integer programming obtained by using fast particle swarm algorithm, and are recovered centrally. In the end, the simulation result indicates that the proposed strategy can achieve the seamless switching for three-phase/single-phase MMGs under the fault condition of distribution network.
标题：配网故障情况下单三相多微网平滑切换控制
英文标题：Mode Transition Strategy for Three-phase/Single-phase Multi-microgrids Under Fault Condition of Distribution Network
作者：杨苹, 彭嘉俊, 许志荣, 曾智基, 张育嘉, 郑群儒,
关键词：多微网, 单三相, 集散式控制, 三相不平衡,
发表日期：2017-10-09
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