中国电机工程学报2023，Vol.43Issue(24)：9682-9695,中插26,15.DOI:10.13334/j.0258-8013.pcsee.221926
连接弱交流电网的柔性直流换流站外环控制器参数解析计算及其限制因素分析
Analytical Calculation Method of Outer Loop Controller Parameters of HVDC Converter Station Connected to Weak AC Grid and Analysis of Limiting Factors
摘要
Abstract
The dynamic response speed of AC voltage of flexible high voltage direct current(HVDC)converter connected to weak AC grid is manly related to the parameters of AC voltage controller,SCR,steady state operating points and equivalent capacitance paralleled at point of common coupling(PCC).Firstly,due to the lack of analytical calculation of the parameters of AC voltage controller and analysis of their limiting factors,the key influence variables and participations of eigenvalues related to dynamic response and stability have been analyzed according to the distribution of zeros and poles based on the detailed analytical model of whole system.Secondly,based on the quasi steady state model of AC system,the analytical calculation expressions of outer loop controller parameters are derived,and their selection ranges are preliminarily analyzed.Thirdly,the effects of outer loop controller parameters,bandwidth of current inner loop,PLL parameters and SCR on stability are studied.The results show that bandwidth of PLL closed to that of AC voltage loop may not be the factor inducing resonance of system.Reducing the parameters of AC voltage controller and PLL can improve the stability of converter station running in inverter mode.Finally,the correctness of parameter calculation and stability analysis is verified by electromagnetic transient simulations.关键词
弱交流电网/柔直换流站/参数解析计算/阻抗模型/稳定性分析Key words
weak AC grid/flexible high voltage direct current(HVDC)converter/parameter analytical calculation/impedance model/stability analysis分类
信息技术与安全科学引用本文复制引用
李云丰,赵文广,贺之渊,杨杰,周家培,许杰锋..连接弱交流电网的柔性直流换流站外环控制器参数解析计算及其限制因素分析[J].中国电机工程学报,2023,43(24):9682-9695,中插26,15.基金项目
国家电网公司总部科技项目(5100-202158471A-0-5-ZN).Project Supported by the Technology Project of State Grid Corporation of China(5100-202158471A-0-5-ZN). （5100-202158471A-0-5-ZN）
