基于小信号模型的微网控制参数选择与稳定性分析.pdf

第32 卷 第25 期 中 国 电 机 工 程 学 报 Vol.32 No.25 Sep. 5, 2012 2012 年9 月5 日 Proceedings of the CSEE ©2012 Chin.Soc.for Elec.Eng. 9 0258-8013 (2012) 25-0009-11 TM 71 A 470 40 文章编号： 中图分类号： 文献标志码： 学科分类号：  基于小信号模型的微网控制参数选择与稳定性分析 张明锐，黎娜，杜志超，徐而峰，陈洁 ( 同济大学电子与信息工程学院，上海市 嘉定区 201804) Control Parameter Selection and Stability Analysis of Microgrid Based on Small-signal Model ZHANG Mingrui, LI Na, DU Zhichao, XU Erfeng, CHEN Jie (College of Electronic and Information Engineering, Tongji University, Jiading District, Shanghai 201804, China) ABSTRACT: Small-signal stability is one of the key issues in 具有良好的环流抑制效果。所建小信号模型可用于微网稳定 microgrid operation, especially for islanding modes, since the 性分析及控制器参数的优化设计。 controller is complex and the microgrid can’t obtain voltage 关键词：微网；小信号模型；固态变压器；下垂控制；孤岛 and frequency reference from the main grid. Therefore, taking 运行 future renewable electric energy delivery and management (FREEDM) network as research object, this paper derived the 0 引言 full state-space equations of solid state transformer (SST), 为解决小容量分布式电源并网发电并提高其 distribution network and loads, and established a complete 利用效率，出现了多种微网模式。其中，未来可再 small-signal model of microgrid to analyze the system stability during islanded operation. The key parameters affecting system 生电能传输和管理(future renewable electric energy stability were determined according to eigenvalues and delivery and management，FREEDM) 网络是基于固 sensitivity analysis. A loop type microgrid with multi-SST was 态变压器(solid state transformer，SST)的新型高压微 designed and simulation tests were performed to verif