An improved prediction method of subsequent commutation failure of an LCC-HVDC considering sequential control response

作     者：Jinxin Ouyang Xinyu Pan Junjun Ye Chao Xiao Yanbo Diao Qingwu Zhang 

作者机构：State Key Laboratory of Power Transmission Equipment and System Security and New TechnologySchool of Electrical EngineeringChongqing UniversityChongqing 400044China Electric Power Research Institute of State Grid Henan Electric Power CompanyZhengzhou 450052China Chongqing City Management CollegeChongqing 401331China NR Electric Co.LtdNanjing 211100China 

出 版 物：《Protection and Control of Modern Power Systems》 (现代电力系统保护与控制（英文）)

年 卷 期：2023年第8卷第3期

页      面：173-183页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0811[工学-控制科学与工程] 

基　　金：supported in part by the National Natural Science Foundation of China under Grant(51877018). 

主　　题：Line-commutated converter based high-voltage direct-current(LCC-HVDC) Subsequent commutation failure(SCF) Converter station Prediction 

摘      要：Subsequent commutation failure(SCF)can be easily generated during the first commutation failure(CF)recovery process in a line-commutated converter-based high voltage direct-current system.SCF poses a significant threat to the safe and stable operation of power systems,and accurate prediction of CF is thus important.However,SCF is affected by the operating characteristics of the main circuit and the coupling effects of sequential control response in the inverter station.These are difficult to predict accurately.In this paper,a new SCF prediction method considering the control response is proposed based on the physical principle of SCF.The time sequence and switching conditions of the controllers at different stages of the first CF recovery process are described,and the corresponding equations of commutation voltage affected by different controllers are derived.The calculation method of the SCF threshold voltage is proposed,and the prediction method is established.Simulations show that the proposed method can predict SCF accurately and provide useful tools to suppress SCF.