Interaction Quantification of MTDC Systems Connected with Weak AC Grids  

作　　者：Wanning Zheng Jiabing Hu Li Chai Bing Liu Zixia Sang 

机构地区：[1]Engineering Research Center of Metallurgical Automation and Measurement Technology,Wuhan University of Science and Technology,Wuhan 430081,China [2]State Key Laboratory of Advanced Electromagnetic Engineering and Technology,and School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China [3]College of Control Science and Engineering,Zhejiang University,Hangzhou 310027,China [4]State Grid Hubei Economic Research Institute,Wuhan 430077,China

出　　处：《CSEE Journal of Power and Energy Systems》2024年第5期2088-2099,共12页中国电机工程学会电力与能源系统学报（英文）

基　　金：supported in part by the National Natural Science Foundation of China under Grant 62173259。

摘　　要：The small-signal stability of multi-terminal high voltage direct current(HVDC)systems has become one of the vital issues in modern power systems.Interactions among voltage source converters(VSCs)have a significant impact on the stability of the system.This paper proposes an interaction quantification method based on the self-/en-stabilizing coefficients of the general N-terminal HVDC system with a weak AC network connection.First,we derive the explicit formulae of self-/en-stabilizing coefficients for any N-terminal HVDC system,which can quantify the interactions through different paths analytically.The relation between the self-/en-stabilizing coefficients and the poles of the system can be used to evaluate the impact of the interactions on the system stability effectively.Then,we employ the obtained formulae to analyze the parameter sensitivity and explain how a parameter affects the stability of the system through different paths of interactions.Finally,extensive examples are given to demonstrate the effectiveness of the proposed method.

关 键 词：INTERACTIONS multi-terminal HVDC self-/enstabilizing coefficients small-signal stability 

分 类 号：TM46[电气工程—电器]