东北电力技术2026，Vol.47Issue(8)：9-16,27,9.
基于行波突变量特性的混合多端直流输电线路纵联保护
Pilot Protection of Hybrid Multi-Terminal DC Transmission Line Based on Traveling Wave Mutation Quantity
马浩博 1李寒雨 1杨震 1刘豪1
作者信息
- 1. 国网河南省电力公司兰考县供电公司,河南 开封 475300
- 折叠
摘要
Abstract
To enhance the reliability of protection for hybrid multi-terminal DC transmission systems under complex converter station topologies and non-uniform boundary conditions,it introduces and constructs a longitudinal protection method based on the direction discrimination characteristics of traveling wave mutation quantity.Firstly,it constructs a refined model of three-terminal hybrid DC transmission on the PSCAD/EMTDC platform to deeply analyze the propagation characteristics of the fault traveling wave mutation quantity.Secondly,it innovatively integrates ICEEMDAN(improved complete ensemble empirical mode decomposition with adaptive noise)and Spearman correlation coefficients,constructing a joint analysis model for traveling wave signals.Finally,it accurately extracts the modal components of the transient traveling wave through ICEEMDAN,and quantifies the correlation differences of the fault components by using the Spearman correlation coefficient to form the fault area discrimination criterion.This protection scheme does not rely on the characteristics of boundary components and effectively suppresses the influence of capacitive current through modal component correlation analysis.The simulation results show that this protection method not only meets the requirements of high reliability and rapid action,but also has good robustness against noise interference.关键词
混合多端直流输电系统/行波突变量/改进自适应噪声完备集合经验模态分解/Spearman相关系数Key words
hybrid multi-terminal DC transmission system/traveling wave mutation quantity/ICEEMDAN/Spearman correlation coefficient分类
信息技术与安全科学引用本文复制引用
马浩博,李寒雨,杨震,刘豪..基于行波突变量特性的混合多端直流输电线路纵联保护[J].东北电力技术,2026,47(8):9-16,27,9.
