局部放电检测用D-dot探头的可行性研究
为了对开关柜等电气设备中产生的局部放电进行检测和模式识别,研制了一种用于局部放电检测的Ddot探头,并搭建了三种典型的局部放电实验模型,采用该探头和脉冲电流法同时对局部放电进行测量,通过比较两者信号之间的幅值能量关系,验证了探头的可靠性。此外还研究了不同距离下的局放信号频谱图,分析了信号高低频分量衰减与其传播距离之间的关系。试验结果表明：（1）D-dot信号能很好的反应局部放电的相位分布;（2）局部放电D-dot信号幅值与脉冲电压峰峰值呈线性关系,信号能量与脉冲电压峰峰值呈二次相关,且针对不同放电模型比例系数有较大差别,可依此进行局放源放电类型分类;（3）D-dot信号中高频部分随距离增加衰减...
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| Published in | 电测与仪表 Vol. 53; no. 6; pp. 108 - 112 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
山东大学电气工程学院山东省特高压输变电技术与装备重点实验室,济南,250061%山东省莱芜供电公司,山东莱芜,271100
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-1390 |
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| Abstract | 为了对开关柜等电气设备中产生的局部放电进行检测和模式识别,研制了一种用于局部放电检测的Ddot探头,并搭建了三种典型的局部放电实验模型,采用该探头和脉冲电流法同时对局部放电进行测量,通过比较两者信号之间的幅值能量关系,验证了探头的可靠性。此外还研究了不同距离下的局放信号频谱图,分析了信号高低频分量衰减与其传播距离之间的关系。试验结果表明：（1）D-dot信号能很好的反应局部放电的相位分布;（2）局部放电D-dot信号幅值与脉冲电压峰峰值呈线性关系,信号能量与脉冲电压峰峰值呈二次相关,且针对不同放电模型比例系数有较大差别,可依此进行局放源放电类型分类;（3）D-dot信号中高频部分随距离增加衰减很快,只在短距离（10 cm）内能够测得,低频部分衰减缓慢,在1m范围内基本无衰减。 |
|---|---|
| AbstractList | 为了对开关柜等电气设备中产生的局部放电进行检测和模式识别,研制了一种用于局部放电检测的Ddot探头,并搭建了三种典型的局部放电实验模型,采用该探头和脉冲电流法同时对局部放电进行测量,通过比较两者信号之间的幅值能量关系,验证了探头的可靠性。此外还研究了不同距离下的局放信号频谱图,分析了信号高低频分量衰减与其传播距离之间的关系。试验结果表明：（1）D-dot信号能很好的反应局部放电的相位分布;（2）局部放电D-dot信号幅值与脉冲电压峰峰值呈线性关系,信号能量与脉冲电压峰峰值呈二次相关,且针对不同放电模型比例系数有较大差别,可依此进行局放源放电类型分类;（3）D-dot信号中高频部分随距离增加衰减很快,只在短距离（10 cm）内能够测得,低频部分衰减缓慢,在1m范围内基本无衰减。 TM933; 为了对开关柜等电气设备中产生的局部放电进行检测和模式识别,研制了一种用于局部放电检测的D-dot探头,并搭建了三种典型的局部放电实验模型,采用该探头和脉冲电流法同时对局部放电进行测量,通过比较两者信号之间的幅值能量关系,验证了探头的可靠性.此外还研究了不同距离下的局放信号频谱图,分析了信号高低频分量衰减与其传播距离之间的关系.试验结果表明:(1) D-dot信号能很好的反应局部放电的相位分布;(2)局部放电D-dot信号幅值与脉冲电压峰峰值呈线性关系,信号能量与脉冲电压峰峰值呈二次相关,且针对不同放电模型比例系数有较大差别,可依此进行局放源放电类型分类;(3) D-dot信号中高频部分随距离增加衰减很快,只在短距离(10 cm)内能够测得,低频部分衰减缓慢,在1m范围内基本无衰减. |
| Author | 秦冰阳 司雯 李斯盟 李岩 梁园斌 亓占华 |
| AuthorAffiliation | 山东大学电气工程学院山东省特高压输变电技术与装备重点实验室,济南250061 山东省莱芜供电公司,山东莱芜271100 |
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| Author_FL | Liang Yuanbin Li Simeng Li Yan Qi Zhanhua Qin Bingyang Si Wen |
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| DocumentTitleAlternate | Feasibility study of D-dot probe used for the detection of partial discharge |
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| EndPage | 112 |
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| Issue | 6 |
| Keywords | D-dot impulse current method 局部放电(PD) 频率衰减 相位分布 partial discharge(PD) phase distribution frequency attenuation 脉冲电流法 |
| Language | Chinese |
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| Notes | 23-1202/TH Qin Bingyang , Si Wen , Li Simeng , Li Yan, Liang Yuanbin, Qi Zhanhua （ 1. Shandong Provincial Key Laboratory of UHV Transmission Technology and Equipment, School of Electrical Engineering, Shandong University, Jinan 250061, China;2. Laiwu Electric Power Supply Company, Laiwu 271100, Shandong , China） D-dot; partial discharge（PD）; impulse current method; phase distribution; frequency attenuation In order to do online monitoring and pattern recognition for partial discharge generated in electrical equipments such as switchgear and so on,a kind of D-dot probe used for the detection of PD is designed in this paper.Three typical models of partial discharge are set up and the PD signal is measured by the probe and impulse current method at the same time. The probe＇s reliability is verified by comparing the relationship of amplitude energy between PD signal and impulse current method. What＇s more,the relationship between signal attenuation of high-low frequency component and the radiation distance is resear |
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| Publisher | 山东大学电气工程学院山东省特高压输变电技术与装备重点实验室,济南,250061%山东省莱芜供电公司,山东莱芜,271100 |
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| Snippet | 为了对开关柜等电气设备中产生的局部放电进行检测和模式识别,研制了一种用于局部放电检测的Ddot探头,并搭建了三种典型的局部放电实验模型,采用该探头和脉冲电流法同时对局... TM933; 为了对开关柜等电气设备中产生的局部放电进行检测和模式识别,研制了一种用于局部放电检测的D-dot探头,并搭建了三种典型的局部放电实验模型,采用该探头和脉冲电流法... |
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| SubjectTerms | D-dot 局部放电（PD） 相位分布 脉冲电流法 频率衰减 |
| Title | 局部放电检测用D-dot探头的可行性研究 |
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