为了研究环氧树脂材料对极不均匀场局部放电的影响特征，依据局部放电测量标准IEC 60270设计了一套局部放电测量回路，采用光电倍增管(PMT)、罗氏线圈以及PDcheck等多种手段对6种典型沿面及悬浮缺陷进行检测，获得了不同电压下空气中6种缺陷的放电脉冲图谱以及PRPD图谱。对比悬浮放电和沿面放电的典型特征，将放电分为辉光放电、电子崩放电、流注放电3个阶段，根据不同阶段下悬浮放电和沿面放电的特征，分析了环氧树脂材料对放电发展的影响。结果表明：在放电初始阶段环氧树脂对放电的影响较小，随着电压的增大，环氧树脂会阻碍放电的发展，到达一定阶段又有助于沿面流注的形成。对比分析了不同位置金属颗粒的典型放电图谱，将沿面缺陷简化为等效电路模型，解释了缺陷在不同位置时正负半周期放电的差异。
To research the influence of epoxy resin on the partial discharge development under non-uni-form field, we designed a partial discharge test system based on IEC 60270. Photomultiplier (PMT), Rogowski coil, and PDcheck were used to test the discharge characteristics of six typical defects, and their pulse spectra and PRPD spectra under different voltages were obtained. Through comparing the typi-cal characteristics of surface discharge and floating discharge, the discharge can be divided into three stag-es, which are glow discharge, electron avalanche discharge, and streamer discharge, and the influence of epoxy resin on the discharge was studied. The results show that the epoxy resin has little influence on the discharge in the initial stage of discharge, and epoxy resin would depress the development of dis-charge with the increase of voltage then eventually contribute to form more stable surface streamer dis-charge. The typical discharge spectra of metal particle at different positions were compared, the surface defect was simplified to equivalent circuit model, and the discharge difference of defects at positive and negative half cycle was explained.
参考文献
| [1] | 邱昌容;曹晓珑.电气绝缘测试技术[M].北京:机械工业出版社,2002 |
| [2] | 汪沨,邱毓昌.气体绝缘开关装置（GIS）的近期发展动向[J].电网技术,2003(02):54-57. |
| [3] | 王国利,郝艳捧,李彦明.电力变压器局部放电检测技术的现状和发展[J].电工电能新技术,2001(02):52-57. |
| [4] | Danikas M.G. .The definitions used for partial discharge phenomena[J].IEEE transactions on electrical insulation. (Institute of Electrical and Electronics Engineers. Electrical Insulation Group). New York.,1993(6):1075-1081. |
| [5] | IEC 60270-2000.High Voltage Test Techniques-Partial Discharge Measurements[S]. |
| [6] | 宋杲,崔景春,袁大陆.2004年高压开关设备运行统计分析[J].电力设备,2006(02):10-14. |
| [7] | CIGRE W G .33/23-12 Insulation Coordination of GIS:Re-turn of Experience,on Site Tests and Diagnostic Techniques[J].Electra,1998,176(02):67-95. |
| [8] | Meijer S;Zoetmulder R G A;Smit J J.Risk Assess-ment of Free Moving Particles in GIS using Spectral and Partial Discharge Analysis[A].,2002:403-406. |
| [9] | Diessner A;Trump J G .Free Conducting Particles in a Co-axial Compressed-gas-insulated System[J].IEEE Transactions on Power Apparatus and Systems,1970,89(08):1970-1974. |
| [10] | Masanori Hara;Takashi Kurihara;Susumu Kozuru;Junya Suehiro;Noriyuki Hayashi .Estimation of partial discharge onset characteristics in gases around a triple junction[J].Electrical engineering in Japan,2003(1):1-11. |
| [11] | Negara Y;Yaji K;Imasaka K et al.AC Particle-triggered Corona Discharge in Low Pressure SF6 Gas[J].IEEE Trans-actions on Dielectrics and Electrical Insulation,2007,14(01):91-100. |
| [12] | 王新新,刘微粒,王强,朱宏林,邹晓兵.绝缘子表面电场及电荷的测量[J].高电压技术,2011(03):732-738. |
| [13] | 张乔根,邱毓昌,王琦,汪沨,刘林平.气-固交界面绝缘子表面电荷的观测与分析[J].绝缘材料,2002(04):37-40. |
| [14] | 丁立健,屠幼萍,李成榕,王景春,吕金壮.真空中绝缘子表面电荷分布的测量[J].高电压技术,2003(04):1-2,23. |
| [15] | 金立军,刘卫东,黄家旗,钱家骊.GIS金属颗粒局部放电的试验研究[J].高压电器,2002(03):10-13. |
| [16] | 齐波,李成榕,郝震,耿弼博,徐党国,刘少宇,邓春.GIS绝缘子表面固定金属颗粒沿面局部放电发展的现象及特征[J].中国电机工程学报,2011(01):101-108. |
| [17] | 芦竹茂 .环氧树脂材料中的电树枝研究[D].北京:华北电力大学,2012. |
| [18] | 张纪伟 .环氧树脂纳米复合介质表面电荷动态特性与电痕破坏研究[D].天津大学,2012. |
| [19] | Wang F;Xia Z;Qiu X et al.Piezoelectric Properties and Charge Dynamics in Poly(vinylidene fluoride-hexafluoropropylene)Copolymer Films with Different Content of HEP[J].IEEE Transactions on Dielectrics and Electrical Insulation,2006,13(05):1132-1139. |
| [20] | Masanori Hara;Yulistya Negara;Makoto Setoguchi;Takashi Kurihara;JunyaSuehiro;Noriyuki Hayashi .Particle-triggered Pre-breakdown Phenomena in Atmospheric Air Gap under ac Voltage[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,2005(5):1071-1081. |
| [21] | Trichel G W .The Mechanism of the Negative Point to Plane Corona near Onset[J].Physical Review,1938,54(12):1078. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%