特高压输电线路悬垂串金具优化研究
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摘要
目前特高压工程采用的三联悬垂串过长,影响了工程投资。为解决三联悬垂串过长问题,在借鉴中国±800 kV直流和1 000 kV交流工程金具设计、制造、建设及运行经验基础上,结合特高压交直流线路悬垂串金具结构的特点,通过对悬垂串内三变二联板、三角联板和平型挂板等金具组合的优化设计,提出三联双线夹悬垂串中三变二联板放在低压侧,同时采用单板式三角板与双板式三角板连接的方式代替原高压侧金具,通过串型三维建模、力学性能和电气性能仿真分析及真型电晕性能试验研究,成功设计出1 000 kV交流工程用紧凑型三联悬垂串及配套金具,缩短串长600 mm,技术经济效益显著。
The length of triple suspension insulator string adopted in the UHV projects is always so long that it may result in the waste of engineering investment. In this article, so as to solve the problems mentioned above, the optimum design of the threevariable-two plane, triangle joint plate and hanging plate in suspension string was carried out based on the experience in design,manufacture, construction and operation of fittings used in ±800 kV UHVDC projects and 1 000 kV UHVAC projects. It is proposed that the three-variable-two plate in the three-wire clip suspension string should be placed on the low-voltage side and the original fittings at high voltage side should be replaced by the connection of the single-plate triangle plate and the double-plate triangle plate.Thought the careful simulation analysis of the mechanical characteristics and electrical characteristics of the proposed, as well as the real-model corona characteristic test research, the compact triple suspension string and matching fittings for the 1 000 kV projects were successfully designed. The total length of the insulator string can be reduced about 600 mm which can improve the economic benefit obviously.
The length of triple suspension insulator string adopted in the UHV projects is always so long that it may result in the waste of engineering investment. In this article, so as to solve the problems mentioned above, the optimum design of the threevariable-two plane, triangle joint plate and hanging plate in suspension string was carried out based on the experience in design,manufacture, construction and operation of fittings used in ±800 kV UHVDC projects and 1 000 kV UHVAC projects. It is proposed that the three-variable-two plate in the three-wire clip suspension string should be placed on the low-voltage side and the original fittings at high voltage side should be replaced by the connection of the single-plate triangle plate and the double-plate triangle plate.Thought the careful simulation analysis of the mechanical characteristics and electrical characteristics of the proposed, as well as the real-model corona characteristic test research, the compact triple suspension string and matching fittings for the 1 000 kV projects were successfully designed. The total length of the insulator string can be reduced about 600 mm which can improve the economic benefit obviously.
引文
[1]刘振亚.特高压电网[M].北京:中国经济出版社,2005.
[2]刘振亚.特高压直流输电技术研究成果专辑(2008)[M].北京:中国经济出版社,2005.
[3]刘振亚.特高压电网(工程)前期论证[M].北京:中国电力出版社,2008.
[4]毛艳,鞠勇,李庆峰,等.±800 kV特高压直流不同型式跳线电气特性的比较分析[J].电网技术,2015,39(4):961-967.MAO Yan,JU Yong,LI Qingfeng,et al.Comparative analysis of electrical characteristics of different type jumpers on±800 kV DCtransmission line[J].Power System Technology,2015,39(4):961-967.
[5]杨熙,王青于,廖晋陶,等.1 000 kV特高压交流输电线路双回耐张塔刚性跳线电晕抑制分析[J].高电压技术,2014,40(6):1839-1846.YANG Xi,WANG Qingyu,LIAO Jintao,et al.Corona suppression analysis of rigid jumper in double-circuit tension tower for 1 000 kVultra high voltage AC transmission line[J].High Voltage Engineering,2014,40(6):1839-1846.
[6]黄文武,贺振华,蔡炜,等.基于紫外成像技术的棒-板间隙放电环境因素研究[J].高电压技术,2015,41(8):2788-2794.HUANG Wenwu,HE Zhenhua,CAI Wei,et al.Study on the environ-mental factors of rod-plane gap discharge based on UVimaging[J].High Voltage Engineering,2015,41(8):2788-2794.
[7]李靖,彭宗仁,刘鹏,等.特高压交流铝管式刚性跳线电场计算和分析[J].高电压技术,2010,36(1):205-211.LI Jing,PENG Zongren,LIU Peng,et al.Electric field calculation and analysis of UHVAC aluminum tube rigid jumper[J].High Voltage Engineering,2010,36(1):205-211.
[8]谢梁,谷莉莉,郑怀清,等.特高压交流刚性跳线金具电晕试验[J].高电压技术,2009,35(3):470-474.XIE Liang,GU Lili,ZHENG Huaiqing,et al.Corona test for UHVAC rigid jumper[J].High Voltage Engineering,2009,35(3):470-474.
[9]董吉谔.电力金具手册[M].3版.北京:中国电力出版社,2010.
[10]张殿生.电力工程高压送电线路手册[M].北京:中国电力出版社,2004.
[11]陈勇,万启发,霍峰,等.1 000 kV交流输电线路导线的电晕特性[J].高电压技术,2007,33(11):43-45.CHEN Yong,WAN Qifa,HUO Feng,et al.Corona characteristics of conductors for 1 000 kV AC transmission lines[J].High Voltage Engineering,2007,33(11):43-45.
[12]王少华,梅冰笑,叶自强,等.紫外成像检测技术及其在电气设备电晕放电检测中的应用[J].高压电器,2011,47(11):92-97.WANG Shaohua,MEI Bingxiao,YE Ziqiang,et al.Ultraviolet imaging detection technology and application in corona discharge detection of electrical equipment[J].High Voltage Apparatus,2011,47(11):92-97.
[13]程应镗.送电线路金具的设计安装试验和应用[M].北京:水利电力出版社,1989.
[14]电力金具通用技术条件:GB/T 2314-2008[S].北京:中国标准出版社,2008.
[15]1 000 kV架空输电线路设计规范:GB 50665-2011[M].北京:中国电力出版社,2014.
[16]熊易,王保山,左中秋,等.输电线路用带外串联间隙避雷器绝缘配合性能研究[J].高电压技术,2014,40(5):1399-1406.XIONGYi,WANG Baoshan,ZUO Zhongqiu,et al.Insulation coordination performance of externally gapped line arresters for transmission lines[J].High Voltage Technology,2014,40(5):1399-1406.
[17]王巨丰,刘赟,黎彬,等.基于向量电气几何模型的输电线路绕击耐雷性能研究[J].电网技术,2008,32(S2):240-244.WANG Jufeng,LIU Yun,LI Bin,et al.Research on shielding failure flashover rate for transmission line based on vector electric geometry model[J].Power System Technology,2008,32(S2):240-244.
[18]刘振国.750 kV输电线路悬垂绝缘子串型式的探讨[J].电力建设,2004,25(6):24-26.LIU Zhenguo.Inquisition into type of suspension insulator strings for750 kV transmission line[J].Electric Power Construction,2004,25(6):24-26.
[19]潘少成,张要强,胡选,等.1 000 kV交流特高压双柱组合耐张塔软跳线电气试验[J].电力建设,2011,32(6):26-29.PAN Shaocheng,ZHANG Yaoqiang,HU Xuan,et al.Electric test of flexible jumper in double-pole-composite strain tower of 1 000 kVAC ultra high voltage[J].Electrical Power Construction,2011,32(6):26-29.
[20]郑德至.关于金具电晕及无线电干扰试验电压的探讨[J].电力建设,1989(5):16-18.ZHENG Dezhi.Discussion on test voltage of corona and radio interference for fitting[J].Electrical Power Construction,1989(5):16-18.
[21]王茂成,邹悦,王亚飞,等.输电线路复合绝缘子和金具串的优化设计[J].电力建设,2011,32(4):96-99.WANG Maocheng,ZOU Yue,WANG Yafei,et al.Optimization design of composite insulator and hardware string[J].Electric Power Construction,2011,32(4):96-99.
[2]刘振亚.特高压直流输电技术研究成果专辑(2008)[M].北京:中国经济出版社,2005.
[3]刘振亚.特高压电网(工程)前期论证[M].北京:中国电力出版社,2008.
[4]毛艳,鞠勇,李庆峰,等.±800 kV特高压直流不同型式跳线电气特性的比较分析[J].电网技术,2015,39(4):961-967.MAO Yan,JU Yong,LI Qingfeng,et al.Comparative analysis of electrical characteristics of different type jumpers on±800 kV DCtransmission line[J].Power System Technology,2015,39(4):961-967.
[5]杨熙,王青于,廖晋陶,等.1 000 kV特高压交流输电线路双回耐张塔刚性跳线电晕抑制分析[J].高电压技术,2014,40(6):1839-1846.YANG Xi,WANG Qingyu,LIAO Jintao,et al.Corona suppression analysis of rigid jumper in double-circuit tension tower for 1 000 kVultra high voltage AC transmission line[J].High Voltage Engineering,2014,40(6):1839-1846.
[6]黄文武,贺振华,蔡炜,等.基于紫外成像技术的棒-板间隙放电环境因素研究[J].高电压技术,2015,41(8):2788-2794.HUANG Wenwu,HE Zhenhua,CAI Wei,et al.Study on the environ-mental factors of rod-plane gap discharge based on UVimaging[J].High Voltage Engineering,2015,41(8):2788-2794.
[7]李靖,彭宗仁,刘鹏,等.特高压交流铝管式刚性跳线电场计算和分析[J].高电压技术,2010,36(1):205-211.LI Jing,PENG Zongren,LIU Peng,et al.Electric field calculation and analysis of UHVAC aluminum tube rigid jumper[J].High Voltage Engineering,2010,36(1):205-211.
[8]谢梁,谷莉莉,郑怀清,等.特高压交流刚性跳线金具电晕试验[J].高电压技术,2009,35(3):470-474.XIE Liang,GU Lili,ZHENG Huaiqing,et al.Corona test for UHVAC rigid jumper[J].High Voltage Engineering,2009,35(3):470-474.
[9]董吉谔.电力金具手册[M].3版.北京:中国电力出版社,2010.
[10]张殿生.电力工程高压送电线路手册[M].北京:中国电力出版社,2004.
[11]陈勇,万启发,霍峰,等.1 000 kV交流输电线路导线的电晕特性[J].高电压技术,2007,33(11):43-45.CHEN Yong,WAN Qifa,HUO Feng,et al.Corona characteristics of conductors for 1 000 kV AC transmission lines[J].High Voltage Engineering,2007,33(11):43-45.
[12]王少华,梅冰笑,叶自强,等.紫外成像检测技术及其在电气设备电晕放电检测中的应用[J].高压电器,2011,47(11):92-97.WANG Shaohua,MEI Bingxiao,YE Ziqiang,et al.Ultraviolet imaging detection technology and application in corona discharge detection of electrical equipment[J].High Voltage Apparatus,2011,47(11):92-97.
[13]程应镗.送电线路金具的设计安装试验和应用[M].北京:水利电力出版社,1989.
[14]电力金具通用技术条件:GB/T 2314-2008[S].北京:中国标准出版社,2008.
[15]1 000 kV架空输电线路设计规范:GB 50665-2011[M].北京:中国电力出版社,2014.
[16]熊易,王保山,左中秋,等.输电线路用带外串联间隙避雷器绝缘配合性能研究[J].高电压技术,2014,40(5):1399-1406.XIONGYi,WANG Baoshan,ZUO Zhongqiu,et al.Insulation coordination performance of externally gapped line arresters for transmission lines[J].High Voltage Technology,2014,40(5):1399-1406.
[17]王巨丰,刘赟,黎彬,等.基于向量电气几何模型的输电线路绕击耐雷性能研究[J].电网技术,2008,32(S2):240-244.WANG Jufeng,LIU Yun,LI Bin,et al.Research on shielding failure flashover rate for transmission line based on vector electric geometry model[J].Power System Technology,2008,32(S2):240-244.
[18]刘振国.750 kV输电线路悬垂绝缘子串型式的探讨[J].电力建设,2004,25(6):24-26.LIU Zhenguo.Inquisition into type of suspension insulator strings for750 kV transmission line[J].Electric Power Construction,2004,25(6):24-26.
[19]潘少成,张要强,胡选,等.1 000 kV交流特高压双柱组合耐张塔软跳线电气试验[J].电力建设,2011,32(6):26-29.PAN Shaocheng,ZHANG Yaoqiang,HU Xuan,et al.Electric test of flexible jumper in double-pole-composite strain tower of 1 000 kVAC ultra high voltage[J].Electrical Power Construction,2011,32(6):26-29.
[20]郑德至.关于金具电晕及无线电干扰试验电压的探讨[J].电力建设,1989(5):16-18.ZHENG Dezhi.Discussion on test voltage of corona and radio interference for fitting[J].Electrical Power Construction,1989(5):16-18.
[21]王茂成,邹悦,王亚飞,等.输电线路复合绝缘子和金具串的优化设计[J].电力建设,2011,32(4):96-99.WANG Maocheng,ZOU Yue,WANG Yafei,et al.Optimization design of composite insulator and hardware string[J].Electric Power Construction,2011,32(4):96-99.