全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电网技术  2014 

染污玻璃绝缘子泄漏电流特性及其闪络电压预测

DOI: 10.13335/j.1000-3673.pst.2014.02.026, PP. 440-447

Keywords: 泄漏电流,污秽度,相对湿度,绝缘子,闪络电压预测,广义回归神经网络

Full-Text   Cite this paper   Add to My Lib

Abstract:

有效预测绝缘子闪络电压是防止发生污闪事故的重要手段,泄漏电流是分析检测绝缘子闪络电压的重要方法。在人工污秽实验室进行大量的试验,模拟运行电压下污秽度与相对湿度对泄漏电流的影响,从不同角度提取了能够反映绝缘子表面污秽度及相对湿度的4个泄漏电流特征量泄漏电流脉冲幅值熵S、脉冲幅值Ih、能量比K及能量E,并得到它们之间的变化规律。提出基于广义回归神经网络(general-izedregressionneuralnetwork,GRNN)的绝缘子闪络电压预测模型,将4个特征量S、Ih、K、E及相对湿度作为GRNN模型的输入量,闪络电压作为GRNN模型的输出量。预测结果与试验结果对比分析可知,相对误差小于7.33%,表明提出的绝缘子闪络电压预测GRNN模型的预测结果与试验结果基本一致,能够有效地对绝缘子闪络电压进行预测。

References

[1]  宿志一.防止大面积污闪的根本出路是提高电网的基本外绝缘水平[J].中国电力, 2003, 36(12):57-61.Su Zhiyi.To intensify basic external insulation level of power system-fundamental way for prevention of large-scale pollution flashove[J].Electric Power, 2003, 36(12):57-61 (in Chinese).
[2]  TF 33.04.03 CIGRE.Insulation pollution monitoring [J].Electra, 1994(152):79-89.
[3]  Fernando M A R M, Gubanski S M.Leakage currents on non-ceramic insulators and materials[J].IEEE Trans on Dielectric Electrical Insulation, 1999, 6(5):660-667.
[4]  Ramirez-Vazquez I, Fierro-Chavez, J L.Criteria for the diagnostic of polluted ceramic insulators based on the leakage current monitoring technique[C]//Conference on Electrical Insulation and Dielectric Phenomena, Austin, USA, 1999: 715-718.
[5]  Marungsri B, Shinokubo H, Matsuoka R.Effect of specimen configuration on deterioration of silicone rubber for polymer insulators in salt fog ageing test[J].IEEE Trans on Dielectric Electrical Insulation, 2006, 13(1):129-138.
[6]  Devendranath D, Channakeshava, Rajkumar A D.Leakage current and charge in RTV coated insulators under pollution conditions [J].IEEE Trans on Dielectric Electrical Insulation, 2002, 9(2):294-299.
[7]  Sun Caixin, Li Jingyan.Contamination level prediction of insulators based on the characteristics of leakage current [J].IEEE Trans on Power Delivery, 2010, 25(1):417-424.
[8]  Suda T.Frequency characteristics of leakage current waveforms of an artificially polluted suspension insulator[J].IEEE Trans on Dielectric Electrical Insulation, 2001, 8(4):705-710.
[9]  Suda T, Member S.Frequency characteristics of leakage current waveforms of a string of suspension insulators [J].IEEE Trans on Power Delivery, 2005, 20(1):481-488.
[10]  Li Jingyan, Sun Caixin, Stephen S T.Humidity and contamination severity impact on the leakage currents of porcelain insulators[J].IET Trans-Generation, Transmission &Distribution, 2009, 5(1):19-28.
[11]  Du B X, Liu Yong.Frequency distribution of leakage current on silicone rubber insulator in salt-fog environments[J].IEEE Trans on Power Delivery, 2009, 24(3):1458 -1464.
[12]  Song Y C, Choi D H.High-frequency components of leakage current as diagnostic tool to study ageing of polymer insulators under salt fog[J].Electronics Letters, 2005, 41(12):684-685.
[13]  Du B X, Liu Yong, Liu H J.Recurrent plot analysis of leakage current for monitoring outdoor insulator performance[J].IEEE Trans on Dielectric Electrical Insulation, 2009, 16( 1):139-146.
[14]  Amarh F, Karady G G, Sundararajan R.Linear stochastic analysis of polluted insulator leakage current[J].IEEE Trans on Power Delivery, 2002, 17(4):1063-1069.
[15]  蒋兴良, 石岩, 黄欢, 等.污秽绝缘子泄漏电流频率和相位特征的试验研究[J].中国电机工程学报, 2010, 30(7):118-124.Jiang Xingliang, Shi Yan, Huang Huan, et al.Experimental research on the frequency and phase characteristics of leakage current of artificially polluted insulators[J].Proceedings of the CSEE, 2010, 30(7):118-124(in Chinese).
[16]  Jiang X, Shi Y, Zhang Z, et al.Evaluating the safety condition of porcelain insulators by the time and frequency characteristics of LC based on artificial pollution tests[J].IEEE Trans on Dielectric Electrical Insulation, 2010, 17(2):481-489.
[17]  聂一雄, 尹项根, 刘春, 等.用模糊逻辑方法对绝缘子串在线检测结果的评定[J].中国电机工程学报, 2003, 23(3):131-136.Nie Yixiong, Yin Xianggen, Liu Chun, et al.Evaluation on the on-line detection results of insulator strings using fuzzy logic method[J].Proceedings of the CSEE, 2003, 23(3):131-136 (in Chinese).
[18]  焦尚彬, 刘丁, 郑岗, 等.基于模糊逻辑方法的高压绝缘子污秽程度评定[J].电力系统自动化, 2005, 29(7):84-89.Jiao Shangbin, Liu Ding, Zheng Gang, et al.Assessment of surface contamination condition of high voltage insulator based on fuzzy logic method[J].Automation of Electric Power Systems, 2005, 29(7):84-89 (in Chinese).
[19]  Jahromi A N, El-Hag A H, Jayara S H.A neural network based method for leakage current prediction of polymeric insulators[J].IEEE Trans on Power Delivery, 2006, 21(1):506-507.
[20]  Kontargyri V T, Gialketsi A A, Tsekouras G J, et al.Design of an artificial neural network for the estimation of the flashover voltage on insulators[J].Electric Power System Research, 2007, 77(12):1532-1540.
[21]  IEC Standard 60507, Artificial pollution tests on high voltage insulators to be used on AC systems[S].1991.
[22]  国家质量监督检验检疫总局, 中国国家标准化管理委员会.GB/T4585—2004 交流系统用高压绝缘子的人工污秽[S].北京:中国标准出版社, 2004.
[23]  Jahromi A N, El-Hag A H, Jayara S H.A neural network based method for leakage current prediction of polymeric insulators[J].IEEE Trans on Power Delivery, 2006, 21(1):506-507.
[24]  张昀.电力系统短期负荷智能化预测方法[D].重庆:重庆大学, 2011.
[25]  邓维, 蓝磊, 文习山, 等.用广义回归神经网络研究输电线雷电绕击特性[J].高电压技术, 2006, 32(5):26-30.Deng Wei, Lan Lei, Wen Xishan, et al.Application of GRNN to study of the lightning shielding performance for 500 kV transmission line[J].High Voltage Engineering, 2006, 32 (5):26-30 (in Chinese).
[26]  史峰, 王小川, 郁磊, 等.Matlab神经网络30个案例分析[M].北京:北京航空航天大学出版社, 2009:72-85.
[27]  苑吉河, 蒋兴良, 舒立春, 等.盐/灰密对不同型式绝缘子交流人工污秽闪络特性的影响[J].中国电机工程学报, 2007, 27(6):96-100.Yuan Jihe, Jiang Xingliang, Shu Lichun, et al.Influence of salt/non-soluble deposit density on AC artificial pollution flashover performances of various types insulators[J].Proceedings of the CSEE, 2007, 27(6):96-100(in Chinese).
[28]  Felix Amarh, George G, Sundararajan R.Level crossing analysis of leakage current envelope of polluted insulators [J].IEEE Power Engineering Review, 2001, 21(8):46-49.
[29]  Karamousantas D C, Chatzarakis G E, Oikonomou D S.Effective insulator maintenance scheduling using artificial neural networks[J].IET Trans-Generation, Transmission & Distribution, 2010, 4(4):479-484.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133