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微网系统在一个局部区域内直接将分布式电源、储能单元和用户负荷联系在一起,能够有效提高能源利用效率,降低配电网的负担,改善电能质量及供电可靠性。在对微网关键技术和国内外示范系统建设分析的基础上,以漕溪微网系统为例,介绍了一种微网系统的总体架构和控制系统结构,并重点对微网在并网运行、离网运行及其相互切换过程中的不同控制策略进行深入分析。
The microgrid system directly connects the distributed power supply, energy storage unit and user load in a local area, which can effectively improve the energy utilization efficiency, reduce the burden on the distribution network, and improve the power quality and reliability of the power supply. Based on the analysis of the key technology of microgrid and the construction of demonstration system at home and abroad, this paper introduces an overall architecture and control system structure of a microgrid system with the example of Caoxi microgrid system, and focuses on the operation of microgrid in grid-connected operation , Off-grid operation and its mutual switching process of different control strategies in-depth analysis.