构网型变流器稳定性研究综述  

An Overview of Stability Studies of Grid-forming Voltage Source Converters

作　　者：詹长江 吴恒 王雄飞 田杰[1] 王新宝[1] 卢宇[1] ZHAN Changjiang;WU Heng;WANG Xiongfei;TIAN Jie;WANG Xinbao;LU Yu(NR Electric Co.Ltd.,Nanjing 211102,Jiangsu Province,China;AAU Energy,Aalborg University,Aalborg 9220,Denmark;Department of Electrical Engineering,KTH Royal Institute of Technology,Stockholm SE-10044,Sweden)

机构地区：[1]南京南瑞继保电气有限公司,江苏省南京市211102 [2]奥尔堡大学能源技术系,丹麦奥尔堡9220 [3]瑞典皇家理工学院电气工程系,瑞典斯德哥尔摩SE-10044

出　　处：《中国电机工程学报》2023年第6期2339-2358,共20页Proceedings of the CSEE

摘　　要：相比目前常用的跟网型变流器,构网型变流器具有同步电压源特性,可以有效提升电力电子化的新型电力系统的稳定性,因而近年来受到了广泛的关注。为了给构网型变流器大规模工程应用提供理论基础支撑,需要在不同电网强度,不同电网扰动形式下对构网型变流器进行完整的稳定性分析。该文拟从稳态工作点的存在性,小信号稳定和大信号稳定3个层面,对现有构网型变流器稳定性分析成果进行系统的梳理和总结。在此基础上进一步归纳提升构网型变流器稳定性的控制方法。最后,总结数个关于构网型变流器稳定性分析和控制的研究方向,为进一步深入研究提供参考。Unlike grid-following converters,the grid-forming converter is operated as a synchronous voltage source,which can effectively improve the stability of power-electronics-dominated power systems,and hence,has attracted much research attention in recent years.As a basis of the large-scale implementation of grid-forming converters,there should be an in-depth understanding of its stability under different grid strengths as well as different grid disturbances.This article performs a comprehensive overview of the stability studies of grid-forming converters from the perspective of existence of equilibrium points,small-signal stability,and transient stability.On top of this,stabilization control solutions of grid-forming converters are also summarized.In the end,perspectives on the prospects and challenges of stability analysis of grid-forming converters are shared.

关 键 词：构网型变流器 小信号稳定 大信号暂态稳定 

分 类 号：TM46[电气工程—电器]