Stability Limitation and Analytical Evaluation of Voltage Droop Controllers for VSC MTDC

作     者：Wenyuan Wang Mike Barnes Ognjen Marjanovic 

作者机构：GE Grid SolutionsStaffordST174LXU.K School of Electrical and Electronic EngineeringThe University of ManchesterManchesterM139PLU.K 

出 版 物：《CSEE Journal of Power and Energy Systems》 (中国电机工程学会电力与能源系统学报（英文）)

年 卷 期：2018年第4卷第2期

页      面：238-249页

核心收录：

学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学] 

基　　金：This work was supported by the UK Engineering and Physical Science Council Project(EP/L102463/1) 

主　　题：Droop control mathematical modeling MTDC control stability VSC HVDC 

摘      要：This paper presents a systematic analysis of DC voltage stability of a multi-terminal VSC-HVDC(MTDC)system,with the emphasis on a comparative study of the most ubiquitous droop control *** paper introduces a general framework for the analysis of various droop control configurations employed in MTDC *** framework is then used to compare leading droop control configurations in terms of their impact on the relative stability,performance and robustness of the overall MTDC system.A generalized analytical MTDC model that contains detailed models of AC and DC system components is *** imposed by DC power flow,DC inductor,cable modeling and AC network impedance on DC system stability are *** and multivariable frequency response analysis and eigenvalue analysis are applied to open-loop and closed-loop models to compare the stability and robustness of five leading droop controllers,with the focus on feedback signal selection and controller *** paper also proposes an active stabilizing controller,which takes the form of a modified constant power control,to enhance the controllability and robustness of the DC voltage control.