电力信息与通信技术2026，Vol.24Issue(3)：26-32,7.DOI:10.16543/j.2095-641x.electric.power.ict.2026.03.04
基于电力线载波通信和DTW算法的配电网差动保护
Distribution Network Differential Protection Based on Power Line Carrier Communication and DTW Algorithm
摘要
Abstract
As the penetration rate of distributed power supplies in the distribution network continues to increase,traditional distribution network differential protection technology faces severe challenges due to the performance limitations of communication channels.Power line carrier(PLC)has become a potential choice for distribution network communication because it does not require additional wiring and easy maintenance.However,its long communication delay and poor anti-interference performance limit its application in differential protection.To address these challenges,this paper proposes a comprehensive solution based on broadband PLC and dynamic time warping(DTW)algorithm.The bandwidth utilization efficiency of broadband PLC is improved by using orthogonal frequency-division multiplexing(OFDM)technology,and effectively suppress noise interference through channel estimation method.The DTW algorithm is introduced as the differential protection criterion,and the Itakura global constraint strategy is used to optimize its computing efficiency.The PSCAD simulation results show that this solution has strong robustness and accuracy in transition resistance and noise interference environments,verifying its feasibility in complex distribution network scenarios.关键词
有源配电网/电力线载波通信/信道估计/动态时间规整/差动保护Key words
active distribution network/PLC/channel estimation/dynamic time warping/differential protection分类
信息技术与安全科学引用本文复制引用
叶远波,王吉文,王贺..基于电力线载波通信和DTW算法的配电网差动保护[J].电力信息与通信技术,2026,24(3):26-32,7.基金项目
国家电网有限公司总部科技项目"大规模分布式光伏接入下中低压配网系统继电保护关键技术研究"(521200223001N). （521200223001N）
