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文章编号:1672-6987(2025)03-0119-09;DOI:10. 16351/j. 1672-6987. 2025. 03. 016
叶 冰,王 栋* (青岛科技大学 自动化与电子工程学院,山东 青岛 266061)
摘 要:传统的行波测距算法精度高度依赖于初始行波波速的计算,而行波波速与行波的频
谱高度相关。因输电线路、换流站等的依频特性,在测距装置安装处检测到的行波频谱会发
生显著畸变。据此,本工作在充分研究输电线路、换流站依频特性的基础上,提出一种新型频 谱校正算法,进一步提出高精度双端行波测距新方法。基于 PSCAD/EMTDC 平台建立了直
流输电仿真系统,仿真结果表明本工作算法测距精度相对传统算法有显著提升,且在不同故
障类型、故障位置、过渡电阻的影响下仍旧具有较强的鲁棒性。
关键词:行波故障测距;频谱校正;直流输电线路;行波波速;行波频谱
中图分类号:TM 77 文献标志码:A
引用格式:叶冰,王栋 . 基于行波频谱校正的直流输电线路故障测距[J]. 青岛科技大学学报 (自然科学版),2025,46(3):119-127.
YE Bing, WANG Dong. Frequency spectrum modulation based travelling wave fault location for DC transmission lines[J]. Journal of Qingdao University of Science and Technology(Natural Science Edition),2025,46(3):119-127.
Frequency Spectrum Modulation Based Travelling Wave Fault Location for DC Transmission Lines
YE Bing,WANG Dong (College of Automation and Electronic Engineering, Qingdao University of Science and Technology, Qingdao 266061, China)
Abstract:The fault location accuracy of traditional travelling wave algorithm is highly related to the calculation of the initial travelling wave velocity, of which is highly related to travelling wave spectrum. Due to the frequency dependent characteristics of transmission lines and converter sta tions, the spectrum of TW signal detected at measuring device contains distortion. Based on the complete research of frequency dependent characteristics of transmission lines and converter sta tions, the paper proposes a high-precision two-terminal travelling wave fault location approach , based on novel travelling wave spectrum correction algorithm. Afterwards, a simulation model of DC transmission system is established on PSCAD/EMTDC software, and the simulation results show that the proposed algorithm has smaller fault location errors comparing with conventional approach. Besides, it has good robustness under the influence of fault type, fault location and
transition resistance issues.
Key words:travelling wave fault location; frequency spectrum correction; DC transmission
收稿日期:2024-05-15
基金项目:山东省自然科学基金项目(ZR2020QE213).
作者简介:叶 冰(1998—),男,硕士研究生 . 通信联系人 .