对未老化和在130℃下经过1000 h热老化的油纸绝缘试样进行局部放电试验，研究不同老化状态的油纸绝缘在电劣化过程中局部放电谱图的变化情况。结果表明：在电劣化过程中，两种试样的局部放电相位分布（PRPD）谱图都呈现5个阶段。经过老化后，试样在各个阶段的放电相位扩宽，放电密度增加，但放电幅值相差不大。
The partial discharge (PD) experiments of the oil-paper insulation samples before and after ther-mal aging 1 000 h at 130 ℃ were conducted, and the change of PD spectra of the oil-paper insulation with different aging degree at the process of electrical aging was studied. The results show that at the process of electrical aging, the PRPD pattern of the two samples show five stages. After aging, the PD phase at five stages broadens, discharge density increases, but the discharge amplitude changes little.
参考文献
| [1] | 李剑,孙才新,廖瑞金,杜林,陈伟根.用于局部放电图象识别的统计特征研究[J].中国电机工程学报,2002(09):104-107. |
| [2] | 廖瑞金,杨丽君,孙才新,李剑.基于局部放电主成分因子向量的油纸绝缘老化状态统计分析[J].中国电机工程学报,2006(14):114-119. |
| [3] | 刘云鹏,律方成,李成榕.局部放电灰度图象数学形态谱的研究[J].中国电机工程学报,2004(05):179-183. |
| [4] | 高文胜,王猛,谈克雄,吴成琦.油纸绝缘中局部放电的典型波形及其频谱特性[J].中国电机工程学报,2002(02):1-5. |
| [5] | Kai Wu;Toshiro Ijichi;Takeyoshi Kato;Yasuo Suzuoki;Fumitaka Komori;Tatsuki Okamoto .Contribution of Surface Conductivity to the Current Forms of Partial Discharges in Voids[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,2005(6):1116-1124. |
| [6] | Kai Wu;Yasuo Suzuoki;L A Dissado .The Contribution of Discharge Area Variation to Partial Discharge Patterns in Disc-voids[J].Journal of Physics D:Applied Physics,2004,37:1815-1823. |
| [7] | Katrin Temmen .Evaluation of Surface Changes in Flat Cavi-ties due to Aging by Means of Phase-angle Resolved Par-tial Discharge Measurement[J].Journal of Physics D:Applied Physics,2000,33:603-608. |
| [8] | Gutfleisch F.;Niemeyer L. .Measurement and simulation of PD in epoxy voids[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,1995(5):729-743. |
| [9] | Niemeyer L. .A generalized approach to partial discharge modeling[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,1995(4):510-528. |
| [10] | Andrea Cavallini;Gian Carlo Montanari .Effect of Supply Voltage Frequency on Testing of Insulation System[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,2006(1):111-121. |
| [11] | Choong-Sik Kim;Takeshi Kondo;Teruyoshi Mizutani .Change in PD Pattern with Aging[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,2004(1):13-18. |
| [12] | 董明 .油浸式电力变压器状态诊断技术及维修策略的研究[D].西安:西安交通大学,2006. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%