电力学报2025，Vol.40Issue(2)：115-122,8.DOI:10.13357/j.dlxb.2025.013
基于改进GED-MUSIC算法的变压器局部放电多目标定位方法
Multi-target Location Method of Transformer Partial Discharge based on Improved GDE-MUSIC Algorithm
摘要
Abstract
The number of discharge sources during the actual partial discharge localization process of transform-ers is unknown.Traditional high-resolution direction of arrival(DOA)estimation algorithms is frequently used to solve discharge localization problems.However,in the case of underestimation or overestimation of the number of sources,there are problems of low positioning accuracy and large errors.A multi-target localization method for partial discharge of transformer based on the improved Geschgorin Disk Estimator(GDE)criterion combined with Multiple Signal Classification(MUSIC)algorithm is proposed.Firstly,the number of real dis-charge sources is determined by using the improved Galerkin circle criterion;Then,when the number of sources is known,the DOA of multiple local discharge sources is estimated by using MUSIC algorithm.Simulation re-sults show that the proposed method has high positioning accuracy,and can accurately estimate the pitch angle and azimuth angle of the discharge source in the case of white noise and spatial color noise,which can meet the actual engineering requirements.关键词
电力变压器/局部放电/多目标定位/盖氏圆准则/MUSIC算法Key words
power transformer/partial discharge/multi-target location/GDE criterion/MUSIC algorithm分类
信息技术与安全科学引用本文复制引用
周晶,周全,袁诚,邓超,周农伧,罗日成..基于改进GED-MUSIC算法的变压器局部放电多目标定位方法[J].电力学报,2025,40(2):115-122,8.基金项目
国网湖南省电力有限公司科技项目(5216N0240003). （5216N0240003）
