基于声纹分析的牵引变压器局部放电近超声PRPD识别  

Near Ultrasonic PRPD Identification of Partial Discharge in Traction Transformers Based on Voiceprint Analysis

作　　者：杨长亮 于培培 逯哲 涂万里 周近 YANG Changliang;YU Peipei;LU Zhe;TU Wanli;ZHOU Jin

机构地区：[1]北京市轨道交通运营管理有限公司 [2]中铁电气工业有限公司 [3]北京谛声科技有限责任公司

出　　处：《电气化铁道》2024年第5期81-86,共6页Electric Railway

摘　　要：牵引变压器在运行中其负荷常发生冲击性变化。本文基于南京东、永宁和六摆渡3个牵引变电所内现场采集的牵引变压器运行过程中的辐射声信号,分析牵引变压器声信号和牵引变电所内主要干扰声信号的类型与特点,并据此探索基于声纹分析的牵引变压器局部放电近超声PRPD(局部放电相位图谱)识别技术。数据分析表明,该技术具有抗干扰能力强、实时性好等特点,可作为一种新型辅助监测手段参与电气化铁路智能化运维。The loads of traction transformer experience changes of impacts during its operation.The paper,on the basis of the radiation sound signals collected at the sites of operation of traction transformers in three traction substations in Nanjing East,Yongning,and Liubaidu,analyzes the types and characteristics of the traction transformer sound signals and the main interference sound signals in the traction substations,and with this as the basis,the identification technology of partial discharge near ultrasonic PRPD(partial discharge phase map)of traction transformers based on voiceprint analysis is explored.Data analysis shows that this technology has great anti-interference ability and good real-time performance,and can be used as a new auxiliary monitoring method for participating in intelligent operation and maintenance of electrified railways.

关 键 词：牵引变压器 局部放电 声纹特征 PRPD 近超声 

分 类 号：U226.7[交通运输工程—道路与铁道工程]