微电网关键技术实践及实验 practice and experiment of the key microgrid technologies.pdfVIP

第41 卷 第2 期 电力系统保护与控制 Vol.41 No.2 2013 年1 月16 日 Power System Protection and Control Jan.16, 2013 微电网关键技术实践及实验 李瑞生 (许继电气股份有限公司，河南 许昌 461000) 摘要：针对微电网运行稳定问题,介绍了高渗透率独立微电网三态控制技术、微电网并离网控制技术、微电网运行技术。给 出了独立微电网三态控制系统图，微电网稳态恒频恒压控制策略及软件实现流程，微电网动态切机减载控制策略及软件实现 流程。提出了微电网暂态故障保护方案以及微电网并网控制逻辑和并网转离网切换的“无缝”及相关实现手段，同时搭建高 渗透率独立微电网的物理模型并提出了相关实验方案。将该技术及策略应用于实际的微电网工程及微电网物理模型试验平台 中验证，结果表明该关键技术及策略是可行的。 关键词：微电网；关键技术；工程实践；物理模型试验 Practice and experiment of the key microgrid technologies LI Rui-sheng （XJ Electric Co., Ltd, Xuchang 461000, China ） Abstract: In respect to the problem of microgrid steady operation, this paper recommends tri-state control technology of high penetration isolated microgrid, microgrid grid-connected and off control technology, and microgrid operation technology. This paper provides the system diagram of the microgrid tri-state control system, steady state constant-frequency and constant-voltage control strategy of micogrid, software realization procedure, dynamic cutting machine load shedding control strategy and control flowchart. Furthermore, it proposes the microgrid transient fault protection strategy and grid-connected control logic and seamless ON/OFF switch and the relevant realization strategy. Meanwhile, the physical model of high penetration isolated microgrid is established and relevant experimental scheme is introduced. The proposed technology and strategy are applied to real microgrid project and the validation of the physical model test platform.