Single-ended Fault Detection Scheme Using Support Vector Machine for Multi-terminal Direct Current Systems Based on Modular Multilevel Converter

作     者：Guangyang Zhou Xiahui Zhang Minxiao Han Shaahin Filizadeh Zhi Geng Guangyang Zhou;Xiahui Zhang;Minxiao Han;Shaahin Filizadeh;Zhi Geng

作者机构：School of Electrical and Electronic EngineeringNorth China Electric Power UniversityBeijing 102206China Department of Electrical and Computer EngineeringUniversity of ManitobaWinnipegCanada 

出 版 物：《Journal of Modern Power Systems and Clean Energy》 (现代电力系统与清洁能源学报（英文）)

年 卷 期：2023年第11卷第3期

页      面：990-1000页

核心收录：

学科分类：12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 080802[工学-电力系统及其自动化] 0808[工学-电气工程] 081104[工学-模式识别与智能系统] 08[工学] 0835[工学-软件工程] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the 111 project(No.B08013) 

主　　题：Fault detection short-circuit fault multi-terminal direct current systems based on modular multilevel converter support vector machine(SVM) wavelet transform 

摘      要：This paper proposes a single-ended fault detection scheme for long transmission lines using support vector machine(SVM)for multi-terminal direct current systems based on modular multilevel converter(MMC-MTDC).The scheme overcomes existing detection difficulties in the protection of long transmission lines resulting from high grounding resistance and attenuation,and also avoids the sophisticated process of threshold value *** high-frequency components in the measured voltage extracted by a wavelet transform and the amplitude of the zero-mode set of the positive-sequence voltage are the inputs to a trained *** output of the SVM determines the fault type.A model of a four-terminal DC power grid with overhead transmission lines is built in PSCAD/*** results of EMTDC confirm that the proposed scheme achieves 100%accuracy in detecting short-circuit faults with high resistance on long transmission *** proposed scheme eliminates mal-operation of DC circuit breakers when faced with power order changes or AC-side *** robustness and time delay are also assessed and shown to have no perceptible effect on the speed and accuracy of the detection scheme,thus ensuring its reliability and stability.