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...

长空气间隙负极性操作冲击放电特性研究(III)—统计特性

DOI: 10.13334/j.0258-8013.pcsee.2014.36.020, PP. 6530-6535

Keywords: 长空气间隙,下电极高度,放电电压,假设检验,不均匀系数

Full-Text   Cite this paper   Add to My Lib

Abstract:

空气间隙的放电特性参数具有统计特性,采用数理统计和有限元数值仿真两种方法对空气间隙的放电特性开展了研究。数理统计结果显示:下棒电极高度对棒-棒长空气间隙的50%负极性操作冲击放电电压有一定的影响;20/2500μs操作冲击电压作用下,棒-棒间隙和棒-板间隙的平均击穿时间基本出现在波尾;80/2500μs操作冲击电压作用下,棒-棒间隙和棒-板间隙的平均击穿时间基本出现在波头;10m棒-板间隙放电电压服从正态分布,棒-棒间隙的伏秒特性低于棒-板间隙的伏秒特性。静电场计算结果显示:电场不均匀系数随着间隙距离的增大而增大,而间隙距离与电场不均匀系数的比值随着间隙距离的增大呈现饱和趋势,定性地解释了长间隙负极性操作冲击放电的饱和特性。所做工作对特高压输电线路绝缘配合设计具有一定的指导意义。

References

[1]  蒋兴良,王军,胡建林,等.1m棒-板空气间隙正极性操作冲击放电特性及电压校正[J].中国电机工程学报,2006,26(16):137-143.Jiang Xingliang,Wang Jun,Hu Jianlin,et al.Positive polarity switching impulse discharge performance and voltage correction of 1m rod-plane air gap[J].Proceedings of the CSEE,2006,26(16):137-143(in Chinese).
[2]  王军.低气压下棒-板空气间隙正极性操作冲击放电特性及校正的研究[D].重庆:重庆大学,2006.Wang Jun.Positive switching impulse flashover performance and voltage correction of rod-plane air gaps at lower atmospheric pressure[D].Chongqing:Chongqing University,2006(in Chinese).
[3]  文远芳.高电压技术[M].武汉:华中科技大学出版社,2001:18-20.Wen Yuanfang.High Voltage Engineering[M].Wuhan:Huazhong University of Science and Technology Press,2001:18-20(in Chinese).
[4]  钱冠军,王晓瑜,徐先芝,等.接地电阻对放电击中点影响的试验研究[J].华中理工大学学报,1998,26(9):68-70.Qian Guanjun,Wang Xiaoyu,Xu Xianzhi,et al.The experimental study on ground resistance affecting discharge striking points[J].Journal of Huazhong University of Science and Technology,1998,26(9):68-70(in Chinese).
[5]  周黎明,吴正宇,邱毓昌.锥尖棒-平板间隙电场不均匀系数的近似公式[J].电工技术学报,1994,9(2):39-42.Zhou Liming,Wu Zhengyu,Qiu Yuchang.Simple expression of field non-uniformity factor for cone capped rod-plane gaps[J].Transactions of China Electrotechnical Society,1994,9(2):39-42(in Chinese).
[6]  马乃祥.长间隙放电[M].北京:中国电力出版社,1998:87-89.Ma Naixiang.Long air gap discharge[M].Beijing:China Electric Power Press,1998:87-89 (in Chinese).
[7]  Paris L.Influence of air gap characteristics on line-to- ground switching surge strength[J].IEEE Transactions on Power Apparatus and Systems,1967,86(8):936-947.
[8]  Taniguchi S,Okabe S,Asakawa A,et al.Flashover characteristics of long air gaps with negative switching impulses[J].IEEE Transactions on Dielectrics and Electrical Insulation,2008,15(2):399-406
[9]  Boutlend M, Allen N L.Dielectric strength of air insulation for coordination of minimum clearances of overhead lines:a review[J].Browsing Journals &Magazines,1994,141(6):449-463.
[10]  邰淑彩,孙韫玉,何娟娟.应用数理统计[M].武汉:武汉大学出版社,2005:80-117.Tai Shucai,Sun Yunyu,He Juanjuan.Applied mathematical statistics[M].Wuhan:Wuhan University Press,2005:80-117(in Chinese).
[11]  Taniguchi S,Okabe S,Takahashi T,et al.Discharge characteristics of 5m long air gap under foggy conditions with lightning shielding of transmission line[J].IEEE Transactions on Dielectrics and Electrical Insulation,2008,15(4):1031-1037.
[12]  Taniguchi S,Okabe S,Takahashi T,et al.Air-gap discharge characteristics in foggy conditions relevant to lightning shielding of transmission lines[J].IEEE Transactions on Dielectrics and Electrical Insulation,2008,23(4):2409-2416.
[13]  Qiu Y.Simple expression of field nonuniformity factor for hemispherically capped rod-plane gaps[J].IEEE Transactions on Electrical Insulation,1986,21(4):673-675.
[14]  刘子瑞,周黎明,邱毓昌.半球头棒-平板间隙轴线电场强度的近似计算式[J].电工技术学报,1996,11(5):36-39.Liu Zirui,Zhou Liming,Qiu Yuchang.An expression of the electric field distribution along the axis in the hemispherically-capped rod-plane gaps[J].Transactions of China Electrotechnical Society,1996,11(5):36-39(in Chinese).
[15]  张波,储金宇,许小红.利用PDEtool box计算电场不均匀系数[J].高电压技术,2005,31(6):1-5.Zhang Bo,Chu Jinyu,Xu Xiaohong.Calculation of field non-uniform coeffcient by PDE tool box[J].High Voltage Engineering,2005,31(6):1-5(in Chinese).
[16]  徐黎明,陈晓宁,马志瀛.六氟化硫断路器无载介质恢复特性的计算[J].中国电机工程学报,1998,18(5):315-318.Xu Liming,Chen Xiaoning,Ma Zhiying.The calculation of the dielectric recovery characteristics without load of SF6 circuit breaker[J].Proceedings of the CSEE,1998,18(5):315-318(in Chinese).

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133