黄道春;卢威;阮江军;黎鹏;

• 1:武汉大学电气工程学院

摘要(Abstract)：

架空输电线路通道内植被燃烧时会产生大量灰烬颗粒物,可显著降低输电线路导线—地空气间隙的绝缘强度。为研究直流电压下植被灰烬对输电线路空气间隙绝缘强度降低的影响机制,通过模拟植被燃烧试验平台,试验研究典型植被灰烬颗粒物对导线—板间隙直流电压击穿特性的影响,分析了颗粒链触发放电的机理。结果表明,3种植被中,茅草灰烬颗粒平均尺寸最大,重量最轻,对间隙绝缘强度影响最大;当间隙存在灰烬颗粒时,直流电压下间隙的绝缘强度大幅下降,负极性电压下,平均击穿电压梯度下降至纯空气间隙的29%;不同极性电压下植被燃烧灰烬颗粒物和间隙击穿特性存在明显差异,试验条件相同时,负极性电压下泄漏电流比正极性大。

关键词(KeyWords)： 典型植被;灰烬;颗粒触发放电;直流击穿特性;极性效应

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金面上项目(51677138)~~

作者(Author): 黄道春;卢威;阮江军;黎鹏;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.0025

参考文献(References)：

• [1]黄道春,黎鹏,阮江军,等.山火引发输电线路间隙放电机理与击穿特性综述[J].高电压技术,2015,41(2):622-632.Huang Daochun,Li Peng,Ruan Jiangjun,et al.Review on discharge mechanism and breakdown characteristics of transmission line gap under forest fire condition[J].High Voltage Engineering,2015,41(2):622-632(in Chinese).
• [2]吴田,胡毅,阮江军,等.交流输电线路模型在山火条件下的击穿机理[J].高电压技术,2011,37(5):1115-1122.Wu Tian,Hu Yi,Ruan Jiangjun,et al.Air gap breakdown mechanism of model AC transmission line under forest fires[J].High Voltage Engineering,2011,37(5):1115-1122(in Chinese).
• [3]吴田,阮江军,胡毅,等.500 k V输电线路的山火击穿特性及机制研究[J].中国电机工程学报,2011,31(34):163-170.Wu Tian,Ruan Jiangjun,Hu Yi,et al.Study on forest fire induced breakdown characteristics and mechanism of 500 k V transmission line[J].Proceedings of the CSEE,2011,31(34):163-170(in Chinese).
• [4]Robledo M A,Guzman E,Hernandez J L.Dielectric characteristics of a model transmission line in the presence of fire[J].IEEE Transactions on Electrical Insulation,1991,26(4):776-782.
• [5]Fonseca J R,Tan A L,Silva R P,et al.Effects of agricultural fires on the performance of overhead transmission lines[J].IEEE Transactions on Power Delivery,1990,5(2):687-694.
• [6]Sukhnandan A,Hoch D A.Fire induced flashovers of transmission lines:theoretical models[C]//2002 IEEE AFRICON:6th Africon Conference in Africa,George,South Africa,2002,2:617-622.
• [7]Li Peng,Huang Daochun,Pu Ziheng,et al.Study on DC voltage breakdown characteristics of gap under fire conditions[C]//2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena(CEIDP),Shenzhen,China,2013:338-341.
• [8]Moreno M.Performance of external insulation in presence of flames due to sugar cane burning[R].Paris,France:CIGRE WG 33-07/10IWD,1985.
• [9]Pretorius P H,Muftic D.Wild fire faults on 765 k V lines modelled conditions and electrical performance[C]//16th International Symposium on High Voltage Engineering,Cape Town,South Africa,2009:1-6.
• [10]Wang Jian,Li Qingmin,Li Botao,et al.Theoretical and experimental studies of air gap breakdown triggered by free spherical conducting particles in DC uniform field[J].IEEE Transactions on Dielectrics and Electrical Insulation,2016,23(4):1951-1958.
• [11]Negara Y,Yaji K,Suehiro J,et al.DC corona discharge from floating particle in low pressure SF6[J].IEEE Transactions on Dielectrics and Electrical Insulation,2006,13(6):1208-1216.
• [12]Sakai K I,Abella D L,Khan Y,et al.Theoretical and experimental studies for spherical free-conducting particle behavior between nonparallel plane electrodes with AC voltages in air[J].IEEE Transactions on Dielectrics and Electrical Insulation,2003,10(3):404-417.
• [13]邓鹤鸣.雷电冲击电压下两相体放电特性研究[D].武汉:华中科技大学,2010.
• [14]Al-Arainy A A.Malik N H,Qureshi M I.Influence of sand/dust contamination on the breakdown of asymmetrical air gaps under lightning impulses[J].IEEE Transactions on Dielectrics and Electrical Insulation,1992,27(2):193-206.
• [15]Naidoo P,Swift D A.Large particle initiated breakdown of an atmospheric air gap:Relating to AC power line faults caused by sugar cane fires[C]//8th International Symposium on High Voltage Engineering.Yokohama,Japan,1993:81-84.
• [16]普子恒,阮江军,吴田,等.火焰中颗粒对间隙放电特性的影响[J].高电压技术,2014,40(1):103-110.Pu Ziheng,Ruan Jiangjun,Wu Tian,et al.Influence of particles in flame on the characteristics of gap discharge[J].High Voltage Engineering,2014,40(1):103-110(in Chinese).
• [17]普子恒,阮江军,黄道春,等.火焰条件下间隙的直流电压击穿特性研究[J].中国电机工程学报,2014,34(3):453-459.Pu Ziheng,Ruan Jiangjun,Huang Daochun,et al.Study on DC voltage breakdown characteristics of gap under fire conditions[J].Proceedings of the CSEE,2014,34(3):453-459(in Chinese).
• [18]杨晓菡,卢国建,刘松林.木垛暴露面积与其热释放速率关系的研究[J].消防理论研究,2010,29(1):13-15.Yang Xiaohan,Lu Guojian,Liu Songlin.Study on the relationship between exposed area and the heat release rate of wood crib[J].Fire Theory Study,2010,29(1):13-15(in Chinese).
• [19]黎鹏,黄道春,阮江军,等.全火焰条件下植被燃烧特征量对导线-板间隙击穿特性的影响[J].电网技术,2016,40(10):3250-3257.Li Peng,Huang Daochun,Ruan Jiangjun,et al.Influence of vegetation combustion features on breakdown characteristics of conductor-plane gap under full flame condition[J].Power System Technology,2016,40(10):3250-3257(in Chinese).
• [20]严璋,朱德恒.高电压绝缘技术[M].北京:中国电力出版社,2007.
• [21]邓鹤鸣,何正浩,马军,等.沙尘天气下大沙粒对放电发展的影响[J].高电压技术,2010,36(5):1246-1252.Deng Heming,He Zhenghao,Ma Jun,et al.Effect of large sand dust particles on discharge development in sand dust weather[J].High Voltage Engineering,2010,36(5):1246-1252(in Chinese).
• [22]Hara M,Negara Y,Setoguchi M,et al.Particle-triggered pre-breakdown phenomena in atmospheric air gap under AC voltage[J].IEEE Transactions on Dielectrics and Electrical Insulation,2005,12(5):1071-1081.
• [23]Sadurski K J,Reynders J P.High voltage AC breakdown in presence of fires[C]//6th International symposium on High Voltage Engineering.New Orleans,USA,1989:146-154.
• [24]姚文俊,何正浩,邓鹤鸣,等.直流电压下两相体放电的粒径效应[J].中国电机工程学报,2012,32(13):144-151+203.Yao Wenjun,He Zhenghao,Deng Heming,et al.Effects of macroparticle sizes on two-phase mixture discharge under DC voltage[J].Proceedings of the CSEE,2012,32(13):144-151+203(in Chinese).