500 kV变电站绝缘子串均压环结构优化分析
|
摘要
为改善变电站绝缘子串的电磁工作环境,同时满足站内金具防晕减噪的要求,提出一种合理的均压环配置方案。针对某500 kV变电站,利用有限元分析软件ANSOFT搭建站内V型绝缘子串及均压环的三维模型,分析不同管径与屏蔽深度的均压环结构对绝缘子串、均压环表面电场强度分布以及对绝缘子串沿轴线电位梯度分布的影响,并根据其影响规律获得合适的配置方案,对均压环结构进行优化。结果表明,均压环结构的优化有效降低了靠近管母线端绝缘子片的承受电压和表面最大场强,也有效改善了绝缘子串的电压和电场强度分布的不均匀性,并能够满足变电站金具防晕减噪的要求。
In order to improve the electromagnetic working environment of substation insulator strings and meet the requirements of anti-corona and noise reduction in the substation, a reasonable grading ring configuration scheme is proposed. A three-dimensional model of 500 kV substation with V-shaped insulator strings and grading ring are established by using the ANSOFT software. The effect of pipe diameter and shielding depth of grading ring on the electric field distribution of insulator strings and grading ring are studied as well as it on the voltage distribution along the axis of insulator string. On this basis, an optimized configuration scheme of grading ring is proposed. It is shown that the optimized grading ring can effectively reduce the potential and the maximum field intensity of insulator near the tubular busbar. The non-uniformity of voltage and electric field distribution of insulator string are improved by the proposed scheme to meet the requirements of anti-corona and noise conduction.
In order to improve the electromagnetic working environment of substation insulator strings and meet the requirements of anti-corona and noise reduction in the substation, a reasonable grading ring configuration scheme is proposed. A three-dimensional model of 500 kV substation with V-shaped insulator strings and grading ring are established by using the ANSOFT software. The effect of pipe diameter and shielding depth of grading ring on the electric field distribution of insulator strings and grading ring are studied as well as it on the voltage distribution along the axis of insulator string. On this basis, an optimized configuration scheme of grading ring is proposed. It is shown that the optimized grading ring can effectively reduce the potential and the maximum field intensity of insulator near the tubular busbar. The non-uniformity of voltage and electric field distribution of insulator string are improved by the proposed scheme to meet the requirements of anti-corona and noise conduction.
引文
[1]黄道春,阮江军,刘守豹.特高压交流复合绝缘子电位和均压环表面电场分布计算[J].高电压技术,2010,36(6):1 442-1 447.HUANG Dao-chun,RUAN Jiang-jun,LIU Shou-bao.Potential distribution along UHV AC transmission line composite insulator and electric field distribution on the surface of grading ring[J].High Voltage Engineering,2014,36(6):1 442-1 447.
[2]胡建林,吴尧,肖代波,等.特高压直流复合支柱绝缘子均压环的优化设计[J].高电压技术,2014,40(1):46-54.HU Jian-lin,WU Yao,XIAO Dai-bo,et al.Optimization for grading rings of UHV DC composite post insulators [J].High Voltage Engineering,2014,40(1):46-54.
[3]黄道春,黄正芳,王国利,等.特高压交流输电线路瓷绝缘子串电位和均压环电场分布计算模型的简化[J].高电压技术,2012,38(9):2 163-2 170.HUANG Dao-chun,HUANG Zheng-fang,WANG Guo-li,et al.Calculation model simplification for porcelain insulator string potential and grading ring surface electric field distribution of UHV AC transmission line[J].High Voltage Engineering,2012,38(9):2 163-2 170.
[4]谢天喜,莫娟,彭宗仁,等.500 kV紧凑型线路悬垂复合绝缘子均压环电晕抑制分析[J].高电压技术,2010,36(7):1 779-1 784.XIE Tian-xi,MO Juan,PENG Zong-ren,et al.Corona suppression of grading rings on suspension composite insulators on 500 kV compact transmission line[J].High Voltage Engineering,2010,36(7):1 779-1 784.
[5]薄学微,卞星明,王黎明,等.750 kV交流复合绝缘子均压环优化设计[J].高压电器,2010,46(12):5-8.BO Xue-wei,BIAN Xing-ming,WANG Li-ming,et al.Optimal design of grading rings for 750 kV AC composite insulator[J].High Voltage Apparatus,2010,46(12):5-8.
[6]李庆峰,邓桃,毛艳,等.1 000 kV特高压交流复合绝缘子耐张串均压特性研究[J].电网技术,2013,37(9):2 541-2 546.LI Qing-feng,DENG Tao,MAO Yan,et al.Study on optimization characteristic of composite tension insulators for 1 000 kV UHVAC lines[J].Power System Technology,2013,37(9):2 541-2 546.
[7]邓桃,宿志一,范建斌,等.±800 kV特高压直流线路复合绝缘子均压环优化设计[J].电网技术,2010,34(8):31-35.DENG Tao,SU Zhi-yi,FAN Jian-bin,et al.Design optimization of grading ring of composite insulators for ±800 kV UHVDC lines[J].Power System Technology,2010,34(8):31-35.
[8]王黎明,侯志刚,梅红伟,等.500 kV港城变电站绝缘子均压环放电现象研究[J].高压电器,2012,48(7):11-16.WANG Li-ming,HOU Zhi-gang,MEI Hong-wei,et al.Study on discharge of grading rings for insulators in the 500 kV Gangcheng Substation[J].High Voltage Apparatus,2012,48(7):11-16.
[9]唐铭骏,叶丽莎,林春耀,等.500 kV站用绝缘子串均压环优化设计[J].高压电器,2015,51(5):63-70.TANG Ming-jun,YE Li-sha,LIN Chun-yao,et al.Optimization of shielding ring of insulator string in 500 kV Substation[J].High Voltage Apparatus,2015,51(5):63-70.
[10]王宏英,夏景欣,黄道春,等.特高海拔500 kV变电站绝缘子串均压环的电晕特性[J].高电压技术,2013,39(3):661-667.WANG Hong-ying,XIA Jing-xin,HUANG Dao-chun,et al.Corona characteristics of insulator string grading ring for 500 kV Substation at ultra high altitude[J].High Voltage Engineering,2013,39(3):661-667.
[11]张旭辉,唐谟懿,刘嘉怡,等.并联间隙改善35 kV绝缘子串电压分布特性研究[J].电力科学与技术学报,2016,31(3):131-135.ZHANG Xu-hui,TANG Mo-yi,LIU Jia-yi,et al.Voltage distribution characteristics improvement for 35 kV insulator with shunt gap[J].Journal of Electric Power Science and Technology,2016,31(3):131-135.
[12]李靖,彭宗仁,谢天喜,等.特高压变电站带跳线V形耐张瓷绝缘子串的均压特性[J].高电压技术,2011,37(9):2 163-2 170.LI Jing,PENG Zong-ren,XIE Tian-xi,et al.Voltage-sharing characteristic of tension V-string ceramic insulators with jumper for UHV substation[J].High Voltage Engineering,2011,37(9):2 163-2 170.
[13]周志成,何俊佳,陈俊武,等.均压环改善绝缘子串电压分布研究[J].高电压技术,2006,32(11):45-48.ZHOU Zhi-cheng,HE Jun-jia,CHEN Jun-wu,et al.Research on improving the voltage distribution of the insulator string by voltage balance slices insulation materials[J].High Voltage Engineering,2006,32(11):45-48.
[14]Q/GDW 551—2010.变电站控制电晕噪声技术导则(导体金具类)[S].
[2]胡建林,吴尧,肖代波,等.特高压直流复合支柱绝缘子均压环的优化设计[J].高电压技术,2014,40(1):46-54.HU Jian-lin,WU Yao,XIAO Dai-bo,et al.Optimization for grading rings of UHV DC composite post insulators [J].High Voltage Engineering,2014,40(1):46-54.
[3]黄道春,黄正芳,王国利,等.特高压交流输电线路瓷绝缘子串电位和均压环电场分布计算模型的简化[J].高电压技术,2012,38(9):2 163-2 170.HUANG Dao-chun,HUANG Zheng-fang,WANG Guo-li,et al.Calculation model simplification for porcelain insulator string potential and grading ring surface electric field distribution of UHV AC transmission line[J].High Voltage Engineering,2012,38(9):2 163-2 170.
[4]谢天喜,莫娟,彭宗仁,等.500 kV紧凑型线路悬垂复合绝缘子均压环电晕抑制分析[J].高电压技术,2010,36(7):1 779-1 784.XIE Tian-xi,MO Juan,PENG Zong-ren,et al.Corona suppression of grading rings on suspension composite insulators on 500 kV compact transmission line[J].High Voltage Engineering,2010,36(7):1 779-1 784.
[5]薄学微,卞星明,王黎明,等.750 kV交流复合绝缘子均压环优化设计[J].高压电器,2010,46(12):5-8.BO Xue-wei,BIAN Xing-ming,WANG Li-ming,et al.Optimal design of grading rings for 750 kV AC composite insulator[J].High Voltage Apparatus,2010,46(12):5-8.
[6]李庆峰,邓桃,毛艳,等.1 000 kV特高压交流复合绝缘子耐张串均压特性研究[J].电网技术,2013,37(9):2 541-2 546.LI Qing-feng,DENG Tao,MAO Yan,et al.Study on optimization characteristic of composite tension insulators for 1 000 kV UHVAC lines[J].Power System Technology,2013,37(9):2 541-2 546.
[7]邓桃,宿志一,范建斌,等.±800 kV特高压直流线路复合绝缘子均压环优化设计[J].电网技术,2010,34(8):31-35.DENG Tao,SU Zhi-yi,FAN Jian-bin,et al.Design optimization of grading ring of composite insulators for ±800 kV UHVDC lines[J].Power System Technology,2010,34(8):31-35.
[8]王黎明,侯志刚,梅红伟,等.500 kV港城变电站绝缘子均压环放电现象研究[J].高压电器,2012,48(7):11-16.WANG Li-ming,HOU Zhi-gang,MEI Hong-wei,et al.Study on discharge of grading rings for insulators in the 500 kV Gangcheng Substation[J].High Voltage Apparatus,2012,48(7):11-16.
[9]唐铭骏,叶丽莎,林春耀,等.500 kV站用绝缘子串均压环优化设计[J].高压电器,2015,51(5):63-70.TANG Ming-jun,YE Li-sha,LIN Chun-yao,et al.Optimization of shielding ring of insulator string in 500 kV Substation[J].High Voltage Apparatus,2015,51(5):63-70.
[10]王宏英,夏景欣,黄道春,等.特高海拔500 kV变电站绝缘子串均压环的电晕特性[J].高电压技术,2013,39(3):661-667.WANG Hong-ying,XIA Jing-xin,HUANG Dao-chun,et al.Corona characteristics of insulator string grading ring for 500 kV Substation at ultra high altitude[J].High Voltage Engineering,2013,39(3):661-667.
[11]张旭辉,唐谟懿,刘嘉怡,等.并联间隙改善35 kV绝缘子串电压分布特性研究[J].电力科学与技术学报,2016,31(3):131-135.ZHANG Xu-hui,TANG Mo-yi,LIU Jia-yi,et al.Voltage distribution characteristics improvement for 35 kV insulator with shunt gap[J].Journal of Electric Power Science and Technology,2016,31(3):131-135.
[12]李靖,彭宗仁,谢天喜,等.特高压变电站带跳线V形耐张瓷绝缘子串的均压特性[J].高电压技术,2011,37(9):2 163-2 170.LI Jing,PENG Zong-ren,XIE Tian-xi,et al.Voltage-sharing characteristic of tension V-string ceramic insulators with jumper for UHV substation[J].High Voltage Engineering,2011,37(9):2 163-2 170.
[13]周志成,何俊佳,陈俊武,等.均压环改善绝缘子串电压分布研究[J].高电压技术,2006,32(11):45-48.ZHOU Zhi-cheng,HE Jun-jia,CHEN Jun-wu,et al.Research on improving the voltage distribution of the insulator string by voltage balance slices insulation materials[J].High Voltage Engineering,2006,32(11):45-48.
[14]Q/GDW 551—2010.变电站控制电晕噪声技术导则(导体金具类)[S].