XLPE电力电缆附件局部放电测量与分析

为研究XLPE电力电缆附件现场常见典型缺陷的放电特征,在3根电缆实体上分别设计制作了中间接头尖刺、主绝缘划伤和终端头应力锥错位3种放电模型,建立了基于PDBase的局部放电测量分析系统。对比研究了3种典型缺陷的局部放电特征,分析了放电次数相位分布谱图Hn（φ）、放电最大幅值相位分布谱图Hqmax（φ）和放电幅值分布谱图H（q）3种统计特征。试验结果表明,不同缺陷类型其放电发展过程不尽相同,呈现的PRPD谱图、单个脉冲波形、相位分布趋势及统计特征区别明显;而同一缺陷在相同条件下其放电特征呈现出相似规律且重复性好;这些特征为进一步开展电缆附件放电机理研究及放电类型的模式识别提供了有力的试验依据。...

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Bibliographic Details
Published in电机与控制学报 Vol. 20; no. 6; pp. 94 - 101
Main Author 赵学风 蒲路 琚泽立 黄国强 吕亮 赵文炎
Format Journal Article
LanguageChinese
Published 国网陕西省电力公司电力科学研究院,陕西西安,710054%国网冀北唐山供电公司,河北唐山,063000 2016
Subjects
PRPD谱图
XLPE
典型缺陷
局部放电
统计分析
脉冲波形
XLPE
典型缺陷
脉冲波形
PRPD pattern
typical defect
局部放电
pulse waveform
statistical analysis
PRPD谱图
统计分析
partial discharge
Online AccessGet full text
ISSN1007-449X
DOI10.15938/j.emc.2016.06.012

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Summary:为研究XLPE电力电缆附件现场常见典型缺陷的放电特征,在3根电缆实体上分别设计制作了中间接头尖刺、主绝缘划伤和终端头应力锥错位3种放电模型,建立了基于PDBase的局部放电测量分析系统。对比研究了3种典型缺陷的局部放电特征,分析了放电次数相位分布谱图Hn（φ）、放电最大幅值相位分布谱图Hqmax（φ）和放电幅值分布谱图H（q）3种统计特征。试验结果表明,不同缺陷类型其放电发展过程不尽相同,呈现的PRPD谱图、单个脉冲波形、相位分布趋势及统计特征区别明显;而同一缺陷在相同条件下其放电特征呈现出相似规律且重复性好;这些特征为进一步开展电缆附件放电机理研究及放电类型的模式识别提供了有力的试验依据。
Bibliography:XLPE ; typical defect ; partial discharge ; PRPD pattern ; pulse waveform ; statistical analysis
ZHAO Xue-feng, PU Lu, JU Ze-li, HUANG Guo-qiang,LU Liang , ZHAO Wen-yan （1. State Grid Shanxi Electric Power Research Institute,Xi＇an 710054,China; 2. State Grid Jibei Tangshan Electric Power Supply Company,Tangshan 063000,China）
23-1408/TM
In order to study the partial discharge （PD） characteristics of the typical defects in XLPE power cable accessories, three PD models as tip defect of middle joint, void defect in main insulation and dislocation of stress cone were designed on the cable entities, and then the PD measurement and analysis system based on the PDBase was established. The PD characteristics of three typical defects were detected and compared, and the statistical features of Hn （φ） ,Hqmax （ φ ） and H（q） were investigated. The experimental results indicate that it has the high stability and repeatability of the discharge on the identical defect model under the same condition. The discharge development pro
ISSN:1007-449X
DOI:10.15938/j.emc.2016.06.012