弱连接条件下并网VSC系统稳定性分析研究综述  

Stability Analysis of Grid-tied VSC Systems Under Weak Connection Conditions

作　　者：王旭斌[1] 杜文娟[1] 王海风[1] WANG Xubin;DU Wenjuan;WANG Haifeng(State Key Laboratory of Alternate Electric Power Systems With New Energy Resources （North China Electric Power University）, Changping District, Beijing 102206, China)

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学)

出　　处：《中国电机工程学报》2018年第6期1593-1604,共12页Proceedings of the CSEE

基　　金：国家重点研发计划项目(2016YFB0900602);中央高校基金科研业务费专项资金资助项目(2017XS010)~~

摘　　要：弱连接条件下并网电压源型换流器（voltage source converter,VSC）系统的稳定性是目前电力电子化电力系统稳定性研究中最受关注、最具有实际应用意义的重要问题之一。该文从并网VSC系统模型、稳定性分析方法、稳定性机理分析3个方面梳理和回顾十几年来国内外对该问题的相关研究成果。特别是针对弱连接条件下并网VSC系统稳定性的机理研究,从锁相环（phase locked loop,PLL）动态影响、PLL与VSC控制系统间交互作用的影响、以及不考虑PLL动态影响3个方面,详细综述迄今获得的研究进展;最后,从分析方法、主要结论以及遗留问题3方面进行总结和展望。A grid-tied voltage source converter（VSC） system may suffer from instability problem when its connection with the grid is weak.This has been one of most concerned and important problems,pursued by many researchers in recent decade.This paper reviewed the research progress on the problem in three main aspects： modeling of the VSC-based system,methods of stability analysis and mechanism of loss of VSC-based system stability.Especially,the paper reviewed the three main factors that may affect the VSC-based system stability considerably.They are the effect of the phase locked loop（PLL）,dynamic interactions between the PLL and VSC control system,the case that the PLL was not considered.The paper was concluded with a short summary on the analytical methods,main results and conclusions obtained so far and issues to be addressed in the future.

关 键 词：电力电子化弱连接 并网电压源型换流器系统 VSC控制 锁相环 稳定性分析 

分 类 号：TM73[电气工程—电力系统及自动化]