35kV电缆终端常温下两种刀痕的局部放电特性
为研究电缆终端主绝缘刀痕缺陷下的局部放电（PD）现象及在不同刀痕缺陷下的局部放电特征,通过电缆附件老化实验平台模拟电缆终端实际运行工况,利用高频电流传感器取终端PD数据,对比分析这两种刀痕缺陷在常温20℃时的幅值相位分布图谱（PRPD）、单次脉冲放电波形、放电量分布图、电场仿真图形及时频（TF）特性。实验结果表明,在常温下两种不同刀痕缺陷的局部放电特征呈现明显差异。环切刀痕缺陷的单次波形持续时间长于纵切刀痕缺陷,在放电量、放电幅值大小及放电相位分布范围上要高于纵切刀痕缺陷,时频特性也存在明显的差异。通过这些差异可为缺陷的类型判断提供理论依据,并对于提前发现电缆终端安装缺陷保证电缆终端的稳定运行...
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| Published in | 电测与仪表 Vol. 54; no. 1; pp. 71 - 76 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
国网达州供电公司,四川达州,635000%四川大学电气信息学院,成都,610065
2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-1390 |
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| Abstract | 为研究电缆终端主绝缘刀痕缺陷下的局部放电（PD）现象及在不同刀痕缺陷下的局部放电特征,通过电缆附件老化实验平台模拟电缆终端实际运行工况,利用高频电流传感器取终端PD数据,对比分析这两种刀痕缺陷在常温20℃时的幅值相位分布图谱（PRPD）、单次脉冲放电波形、放电量分布图、电场仿真图形及时频（TF）特性。实验结果表明,在常温下两种不同刀痕缺陷的局部放电特征呈现明显差异。环切刀痕缺陷的单次波形持续时间长于纵切刀痕缺陷,在放电量、放电幅值大小及放电相位分布范围上要高于纵切刀痕缺陷,时频特性也存在明显的差异。通过这些差异可为缺陷的类型判断提供理论依据,并对于提前发现电缆终端安装缺陷保证电缆终端的稳定运行具有非常重要的实际应用价值。 |
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| AbstractList | TM832%TM855; 为研究电缆终端主绝缘刀痕缺陷下的局部放电(PD)现象及在不同刀痕缺陷下的局部放电特征,通过电缆附件老化实验平台模拟电缆终端实际运行工况,利用高频电流传感器取终端PD数据,对比分析这两种刀痕缺陷在常温20℃时的幅值相位分布图谱(PRPD)、单次脉冲放电波形、放电量分布图、电场仿真图形及时频(T-F)特性.实验结果表明,在常温下两种不同刀痕缺陷的局部放电特征呈现明显差异.环切刀痕缺陷的单次波形持续时间长于纵切刀痕缺陷,在放电量、放电幅值大小及放电相位分布范围上要高于纵切刀痕缺陷,时频特性也存在明显的差异.通过这些差异可为缺陷的类型判断提供理论依据,并对于提前发现电缆终端安装缺陷保证电缆终端的稳定运行具有非常重要的实际应用价值. 为研究电缆终端主绝缘刀痕缺陷下的局部放电（PD）现象及在不同刀痕缺陷下的局部放电特征,通过电缆附件老化实验平台模拟电缆终端实际运行工况,利用高频电流传感器取终端PD数据,对比分析这两种刀痕缺陷在常温20℃时的幅值相位分布图谱（PRPD）、单次脉冲放电波形、放电量分布图、电场仿真图形及时频（TF）特性。实验结果表明,在常温下两种不同刀痕缺陷的局部放电特征呈现明显差异。环切刀痕缺陷的单次波形持续时间长于纵切刀痕缺陷,在放电量、放电幅值大小及放电相位分布范围上要高于纵切刀痕缺陷,时频特性也存在明显的差异。通过这些差异可为缺陷的类型判断提供理论依据,并对于提前发现电缆终端安装缺陷保证电缆终端的稳定运行具有非常重要的实际应用价值。 |
| Abstract_FL | In order to investigate the partial discharge ( PD) phenomenon of the cable termination and the characteris-tics under different kinds of main insulation cutting defects , the actual working conditions of cable terminal will be simulated through the platform of XLPE cable accessories , furthermore, the experimental data would be acquired by u-sing HFCT ( high frequency current transformer ) .The characteristics of two cutting defects covering PRPD ( Phase Resolved Partial Discharge ) , waveform of single pulse discharge , the figure of discharge capacity , the electric field simulation and T-F characteristic are compared under normal temperature 20 ℃.The experimental results show that the characteristics of PD were significant difference of the two kinds of different cutting defects under the normal tem -perature, the time of the single waveform for ring-cutting defect is longer than slitting-cutting, and higher on discharge capacity , the amplitude and the phase distribution of PD , there are some significant differences of T-F between them . It will provide the theory basis from the difference , which are very important to discover the defects of cable terminal early and ensure its stable operation , and has practical application value . |
| Author | 高元生 赵庆杰 杨利彬 陈强 吴科 周凯 |
| AuthorAffiliation | 国网达州供电公司,四川达州635000 四川大学电气信息学院,成都610065 |
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| Author_FL | Wu Ke Chen Qiang Zhou Kai Gao Yuansheng Zhao Qingjie Yang Libin |
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| DocumentTitleAlternate | The partial discharge characteristics for two cutting defects for 35kV cable terminations under normal temperature |
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| Keywords | time-frequency characteristic cable termination PRPD 局部放电 电缆终端 时频特性 幅值相位分布 partial discharge |
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| Notes | Gao Yuansheng1 , Zhao Qingjie2, Yang Libin1, Chen Qiang1, Wu Ke2, Zhou Kai2 （1. State Grid Dazhou Electric Corporation, Dazhou 635000, Sichuan, China. 2. School of Electrical Engineering and Information, Sichuan University, Chengdu 610065, China） In order to investigate the partial discharge （PD） phenomenon of the cable termination and the characteris- tics under different kinds of main insulation cutting defects, the actual working conditions of cable terminal will be simulated through the platform of XLPE cable accessories, furthermore, the experimental data would be acquired by u- sing HFCT （high frequency current transformer）. The characteristics of two cutting defects covering PRPD （Phase Resolved Partial Discharge）, waveform of single pulse discharge, the figure of discharge capacity, the electric field simulation and T-F characteristic are compared under normal temperature 20 ~C. The experimental results show that the characteristics of PD were significant difference of the two kinds of different cuttin |
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| SubjectTerms | 局部放电 幅值相位分布 时频特性 电缆终端 |
| Title | 35kV电缆终端常温下两种刀痕的局部放电特性 |
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