10kV架空绝缘导线防雷击断线用非穿刺式带间隙金属氧化物避雷器
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摘要
针对现有架空绝缘导线防雷击断线装置存在的普遍问题,研制了一种由绝缘子、避雷器与非穿刺式高压电极组成的新型绝缘装置。由于采用了非穿刺式高压电极,线芯和电极间有绝缘表皮的阻隔,绝缘表皮的击穿点位置不确定,导致高压电极的安装位置及其对应的间隙距离确定方法与同类装置有较大区别。采用精细化设计理念,提出了基于概率比较的绝缘配合原则,即利用Weibull概率分布模型的数据处理方法,比较放电概率以确定非穿刺式高压电极的安装位置及其对应的间隙距离。通过实例试验和计算,得到了P15绝缘子相匹配的非穿刺式高压电极安装最佳位置和对应的间隙最佳距离。通过试验验证了该距离下,放电通道均沿带间隙避雷器通过,有效防止绝缘导线的雷击断线。
In view of common problems existing in current devices for preventing breakage of overhead insulated conductors caused by lightning stroke, a new type of insulated device consisting of insulator, surge arrester and non-piercing HV electrode is developed. Due to usage of non-piercing HV electrodes, the wire core and the electrode are insulated with epidermis, so the position of breakage point of the insulating epidermis is uncertain, leading to installation position of the HV electrode and corresponding gap distance determination method different from the other devices of the same kind. Based on the concept of refined design, the paper puts forward an insulation coordination principle based on probability comparison, proposing to use Weibull probabilistic distribution model for data process, to determine installation position of the non-piercing HV electrode and corresponding gap distance. The optimum position and corresponding gap distance of the non-piercing HV electrode fitted with P15 insulator is obtained with example test and calculation. It is verified by experiment that the discharge channel passes along metal oxide surge arrester(MOA) with series gap under this distance and prevents lightning breakage of the insulated conductor effectively.
In view of common problems existing in current devices for preventing breakage of overhead insulated conductors caused by lightning stroke, a new type of insulated device consisting of insulator, surge arrester and non-piercing HV electrode is developed. Due to usage of non-piercing HV electrodes, the wire core and the electrode are insulated with epidermis, so the position of breakage point of the insulating epidermis is uncertain, leading to installation position of the HV electrode and corresponding gap distance determination method different from the other devices of the same kind. Based on the concept of refined design, the paper puts forward an insulation coordination principle based on probability comparison, proposing to use Weibull probabilistic distribution model for data process, to determine installation position of the non-piercing HV electrode and corresponding gap distance. The optimum position and corresponding gap distance of the non-piercing HV electrode fitted with P15 insulator is obtained with example test and calculation. It is verified by experiment that the discharge channel passes along metal oxide surge arrester(MOA) with series gap under this distance and prevents lightning breakage of the insulated conductor effectively.
引文
[1]陈维江,李庆峰,来小康,等.10 k V架空绝缘导线防雷击断线用防弧金具研究[J].电网技术,2002,26(9):25-28.Chen Weijiang,Li Qingfeng,Lai Xiaokang,et al.Development of arc-protection hardware against lightning caused breaking of covered conductors in 10k V distribution networks[J].Power System Technology,2002,26(9):25-28(in Chinese).
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[7]王引航.10 k V绝缘导线施工存在的问题及应对措施[J].农村电工,2016,25(4):34-35.Wang Yinhang.Problems and countermeasures existing in construction of 10 k V insulated conductor[J].Rural Electrician,2016,25(4):34-35(in Chinese).
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[9]Wilson M P,Given M J,Timoshkin I V,et al.Impulse-driven surface breakdown data:a Weibull statistical analysis[J].IEEE Transactions on Plasma Science,2012,40(10):2449-2456.
[10]杨鑫,戴何笠,石海鹏,等.复合羊角间隙与避雷器并联的变压器中性点保护[J].电网技术,2016,40(2):620-625.Yang Xin,Dai Heli,Shi Haipeng,et al.Transformer neutral protection method of composite horn gap parallel to surge arrester[J].Power System Technology,2016,40(2):620-625(in Chinese).
[11]Brito V S,Lira G R S,Costa E G,et al.A wide-range model for metal-oxide surge arrester[J].IEEE Transactions on Power Delivery,2017,45(99):1-1.
[12]?lhan S,Font A,Kalenderl??.Numerical analysis of a metal-oxide surge arrester by using finite element method[C]//IEEE International Conference on High Voltage Engineering and Application.IEEE,2016:1-4.
[13]王莉英,杨大卫,朱跃,等.330 k V带串联外间隙的线路型氧化锌避雷器技术参数的确定[J].西北电力技术,2004,32(1):1-3.Wang Liying,Yang Dawei,Zhu Yue,al et.Technical parameter determination of 330 k V line Zn O lightning arrestor with external series gap[J].Northwest Electric Power Technology,2004,32(1):1-3(in Chinese).
[14]李凡,施围.线路避雷器的绝缘配合[J].高电压技术,2005,31(8):18-23.Li Fan,Shu Wei,Insulation coordination for line surge arrester[J].High Voltage Engineering,2005,31(8):18-23(in Chinese).
[15]中华人民共和国国家发展和改革委员会.JB/T 9672.2—2005串联间隙金属氧化物避雷器第2部分:35 k V及以下交流系统用有串联间隙金属氧化物避雷器[S].北京:机械工业出版社,2005.
[16]张学军,盛俊豪,高伟庆,等.基于正态分布的带串联间隙避雷器间隙距离的确定方法[J].电瓷避雷器.2015,57(3):74-78+83.Zhang Xuejun,Sheng Junhao,Gao Weiqing,et al.Determination method for gap distance of line surge arrester with series gap based on normal distribution[J].Insulators and Surge Arresters,2015,57(3):74-78+83(in Chinese).
[2]陈维江,孙昭英,綦海昌,等.防止10 k V架空绝缘导线雷击断线用放电箝位柱式复合绝缘子的研究[J].电网技术,2005,29(16):49-51.Chen Weijiang,Sun Zhaoying,Qi Haichang,et al.Development of clamping post composite insulation-covered conductors caused by lightning stroke[J].Power System Technology,2005,29(16):49-51(in Chinese).
[3]陈维江,孙昭英,王晓刚,等.10 k V架空绝缘线路用防弧金具及放电箝位绝缘子的工频电弧试验条件[J].电网技术,2005,29(17):5-7+13.Chen Weijiang,Sun Zhaoying,Wang Xiaogang,et al.Power frequency arc test conditions of power frequency arc-protection hardware and clamping post composition insulators for 10 k V overhead insulation-covered conductors[J].Power System Technology,2005,29(17):5-7+13(in Chinese).
[4]陈维江,孙昭英,周小波,等.防止10 k V架空绝缘导线雷击断线用穿刺型防弧金具的研制[J].电网技术,2005,29(20):86-88.Chen Weijiang,Sun Zhaoying,Zhou Xiaobo,et al.Development of arc-protection hardware with stabs to prevent breakage of 10 k V overhead insulation-covered conductors caused by lightning stroke[J].Power System Technology,2005,29(20):86-88(in Chinese).
[5]陈维江,沈海滨,陈秀娟,等.10 k V配电网架空绝缘导线雷击断线防护[J].电网技术,2007,31(22):34-37.Chen Weijiang,Shen Haibing,Chen Xiujuan,et al.Measures to prevent lighting-caused breakage of overhead insulated conductors in 10kv distribution networks[J].Power System Technology,2007,31(22):34-37(in Chinese).
[6]沈海滨,陈维江,张少军,等.一种防止10 k V架空绝缘导线雷击断线用新型串联间隙金属氧化物避雷器[J].电网技术,2007,31(3):64-67.Shen Haibing,Chen Weijiang,Zhang Shaojun,et al.A new metal oxide surge arrester with series gap to prevent breakage of 10 k V overhead insulated conductors caused by lightning stroke[J].Power System Technology,2007,31(3):64-67(in Chinese).
[7]王引航.10 k V绝缘导线施工存在的问题及应对措施[J].农村电工,2016,25(4):34-35.Wang Yinhang.Problems and countermeasures existing in construction of 10 k V insulated conductor[J].Rural Electrician,2016,25(4):34-35(in Chinese).
[8]Wilson M P,Given M J,Timoshkin I V,et al.Impulse-driven surface breakdown data:a Weibull statistical analysis[J].IEEE Transactions on Plasma Science,2012,27(99):1-8.
[9]Wilson M P,Given M J,Timoshkin I V,et al.Impulse-driven surface breakdown data:a Weibull statistical analysis[J].IEEE Transactions on Plasma Science,2012,40(10):2449-2456.
[10]杨鑫,戴何笠,石海鹏,等.复合羊角间隙与避雷器并联的变压器中性点保护[J].电网技术,2016,40(2):620-625.Yang Xin,Dai Heli,Shi Haipeng,et al.Transformer neutral protection method of composite horn gap parallel to surge arrester[J].Power System Technology,2016,40(2):620-625(in Chinese).
[11]Brito V S,Lira G R S,Costa E G,et al.A wide-range model for metal-oxide surge arrester[J].IEEE Transactions on Power Delivery,2017,45(99):1-1.
[12]?lhan S,Font A,Kalenderl??.Numerical analysis of a metal-oxide surge arrester by using finite element method[C]//IEEE International Conference on High Voltage Engineering and Application.IEEE,2016:1-4.
[13]王莉英,杨大卫,朱跃,等.330 k V带串联外间隙的线路型氧化锌避雷器技术参数的确定[J].西北电力技术,2004,32(1):1-3.Wang Liying,Yang Dawei,Zhu Yue,al et.Technical parameter determination of 330 k V line Zn O lightning arrestor with external series gap[J].Northwest Electric Power Technology,2004,32(1):1-3(in Chinese).
[14]李凡,施围.线路避雷器的绝缘配合[J].高电压技术,2005,31(8):18-23.Li Fan,Shu Wei,Insulation coordination for line surge arrester[J].High Voltage Engineering,2005,31(8):18-23(in Chinese).
[15]中华人民共和国国家发展和改革委员会.JB/T 9672.2—2005串联间隙金属氧化物避雷器第2部分:35 k V及以下交流系统用有串联间隙金属氧化物避雷器[S].北京:机械工业出版社,2005.
[16]张学军,盛俊豪,高伟庆,等.基于正态分布的带串联间隙避雷器间隙距离的确定方法[J].电瓷避雷器.2015,57(3):74-78+83.Zhang Xuejun,Sheng Junhao,Gao Weiqing,et al.Determination method for gap distance of line surge arrester with series gap based on normal distribution[J].Insulators and Surge Arresters,2015,57(3):74-78+83(in Chinese).