电力系统及其自动化学报2026，Vol.38Issue(1)：151-158,8.DOI:10.19635/j.cnki.csu-epsa.001642
一种适用于交直流混合架空线路的故障保护方法
Fault Protection Method Applicable to AC/DC Hybrid Overhead Lines
丁志远 1戴向峰 1陈焕栩 1夏天雷 1朱勇 1傅琪雯1
作者信息
- 1. 国网江苏省电力有限公司常州供电分公司,常州 213001
- 折叠
摘要
Abstract
After a fault occurs in the AC/DC hybrid overhead lines,the fault characteristics are complex,and the pro-tection adaptability on both the DC and AC sides will be affected to varying degrees.To solve the problems of insuffi-cient adaptability and even failure of AC/DC protection under the above scenarios,the correlation characteristics of measured current in DC and AC lines under different fault scenarios are analyzed in this paper.On this basis,a high-sensitivity start-up criterion is constructed by means of the aggregated quantity of current at the DC-side neutral point at first.Then,the Hausdorff distance is introduced to measure the waveform similarity of measured current in AC/DC lines.Finally,an identification criterion for the fault between AC and DC systems is established based on the difference in AC/DC current similarity under different fault scenarios,thereby formulating a complete protection scheme.The pro-posed protection method was tested on a constructed simulation platform.Results show that it can effectively identify the inter-system and non-inter-system faults,and it can also be exported within 5 ms after the fault.关键词
高压直流输电系统/交直流故障/波形相似度/保护Key words
HVDC transmission system/AC/DC fault/waveform similarity/protection分类
信息技术与安全科学引用本文复制引用
丁志远,戴向峰,陈焕栩,夏天雷,朱勇,傅琪雯..一种适用于交直流混合架空线路的故障保护方法[J].电力系统及其自动化学报,2026,38(1):151-158,8.
