电力工程技术2026，Vol.45Issue(6)：53-61,83,10.DOI:10.12158/j.2096-3203.2026.06.006
低可观测性配电系统谐波源分层定位方法
Hierarchical location method for harmonic sources in low-observability power distribution systems
摘要
Abstract
To address the issue of harmonic source localization in low-observability power distribution systems,a hierarchical localization method based on physical network structure information is proposed.Firstly,according to the physical characteristics of distribution networks,the distribution rules of harmonic voltages and currents under radial topology are analyzed.Then,measurement points are reasonably placed to partition the network and construct a new topology.Based on harmonic current path identification,the number of harmonic sources and their located sections are determined.Finally,precise estimation is carried out in the determined sections to obtain the specific locations of harmonic sources.The model is established and solved based on mixed integer quadratic programming(MIQP),and simulations are implemented in MATLAB.Taking the IEEE 33-bus system as an example,the effectiveness and accuracy of the proposed method are verified by comparison with existing methods.The results demonstrate that the hierarchical harmonic source localization method presented in this paper can solve harmonic source localization problems that are closely aligned with real-world scenarios,achieving localization of harmonic sources in low-observability distribution systems where both the number and location of harmonic sources are unknown.关键词
谐波源定位/谐波状态估计/低可观测性/配电网/分层估计/混合整数二次规划(MIQP)Key words
harmonic source location/harmonic state estimation/low observability/distribution network/hierarchical estimation/mixed integer quadratic programming(MIQP)分类
信息技术与安全科学引用本文复制引用
李江慧,刘沈全,陈茜,曾德辉,王钢..低可观测性配电系统谐波源分层定位方法[J].电力工程技术,2026,45(6):53-61,83,10.基金项目
国家自然科学基金资助项目(52207103) （52207103）
广东省基础与应用基础研究基金资助项目(2023A1515010343) （2023A1515010343）
