±800kV特高压宾金直流悬式及支柱绝缘子自然积污特性
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摘要
为研究特高压直流输变电设备外绝缘积污特性,利用特高压直流宾金线和金华换流站设置带电、不带电绝缘子污秽测点,经过1a完整积污后,对试验绝缘子上、下表面盐密(equivalent salt deposit density,ESDD)、灰密(non-soluble deposit density,NSDD)进行了测试、分析,结果表明,特高压直流电场显著加剧高电位绝缘子积污,宾金线带电绝缘子盐密、灰密分别为不带电绝缘子相应值的1.52、1.86倍;金华换流站被测支柱绝缘子高压端盐密、灰密分别是其中部、低压端均值的1.45、1.27倍;电压极性对悬式、支柱绝缘子积污均无显著影响;与站内复合支柱绝缘子相比,悬式绝缘子上、下表面积污差异更为显著。
In order to research natural pollution characteristics of external insulation of UHVDC transmission and transformation equipment,energized and non-energized test insulators were installed on Yibin-Jinhua transmission line and Jinhua convertor station.After complete one year pollution deposition period,equivalent salt deposit density(ESDD) and non-soluble deposit density(NSDD) on upper and lower surface of the insulators were measured and analyzed.Results indicated that UHVDC electrical field enhanced pollution of the energized insulators apparently.ESDD and NSDD of the energized insulators on the line were 1.52 and 1.86 times of those of non-energized insulators respectively.ESDD and NSDD values of composite post insulator under ±800 kV potential position were 1.45 and 1.27 times of those of rest parts.Influence of potential polarity on both suspension and post insulators were not obvious.Compared to composite post insulator,difference of pollution between upper and lower surfaces of suspension insulators was much more notable.
In order to research natural pollution characteristics of external insulation of UHVDC transmission and transformation equipment,energized and non-energized test insulators were installed on Yibin-Jinhua transmission line and Jinhua convertor station.After complete one year pollution deposition period,equivalent salt deposit density(ESDD) and non-soluble deposit density(NSDD) on upper and lower surface of the insulators were measured and analyzed.Results indicated that UHVDC electrical field enhanced pollution of the energized insulators apparently.ESDD and NSDD of the energized insulators on the line were 1.52 and 1.86 times of those of non-energized insulators respectively.ESDD and NSDD values of composite post insulator under ±800 kV potential position were 1.45 and 1.27 times of those of rest parts.Influence of potential polarity on both suspension and post insulators were not obvious.Compared to composite post insulator,difference of pollution between upper and lower surfaces of suspension insulators was much more notable.
引文
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[19]王康,王建国,江健武,等.涂覆RTV对瓷绝缘子盐密和灰密影响的对比观测[J].高电压技术,2012,38(4):847-854.Wang Kang,Wang Jianguo,Jiang Jianwu,et al.Contrast observation on the influence of ESDD and NSDD of porcelain insulator with RTV[J].High Voltage Engineering,2012,38(4):847-854(in Chinese).
[20]王建国,王康,姚森敬,等.不带电条件下复合绝缘子与XP-70绝缘子自然积污特性对比分析[J].高电压技术,2013,39(4):957-963.Wang Jianguo,Wang Kang,Yao Senjing,et al.Comparison and analysis on natural contamination characteristics of uncharged composite insulator and XP-70 insulator[J].High Voltage Engineering,2013,39(4):957-963(in Chinese).
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[2]吴敬儒,王建生,何百磊.建设特高压直流输电工程输送风电的技术经济可行性分析及建议[J].风能,2013,44(10):54-58.Wu Jingru,Wang Jiansheng,He Bailei.Analysis and suggestion on technical and economic feasibility of UHVDC project construction for wind power transmission[J].Wind Energy,2013,44(10):54-58(in Chinese).
[3]陈汉雄.四川电网季节性电能外送曲线优化[J].中国电力,2013,46(12):144-150.Chen Hanxiong.Transmission curves optimization of Sichuan grid's seasonal electric energy[J].Electric Power,2013,46(12):144-150(in Chinese).
[4]陈锡磊,周浩,沈扬,等.溪洛渡—浙西±800kV/7500MW特高压直流输电工程主回路参数设计[J].电网技术,2011,35(33):26-32.Chen Xilei,Zhou Hao,Shen Yang,et al.Study and design of main circuit parameters for±800 kV/7500 MW DC power transmission project from Xiluodu to Zhexi[J].Power System Technology,2011,35(33):26-32(in Chinese).
[5]宿志一.葛南直流输电线路华东段和南桥换流站绝缘子自然积污状况调查[J].电网技术,1993,17(3):9-15.Su Zhiyi.Natural pollution investigation on the Ge-Nan DC transmission line of East part of China and the post insulators of Nan Qiao convertor station[J].Power System Technology,1993,17(3):9-15(in Chinese).
[6]王彬,梁曦东,张轶博,等.交、直流电压下复合绝缘子和瓷绝缘子的自然积污试验[J].高电压技术,2009,35(9):2322-2328.Wang Bin,Liang Xidong,Zhang Yibo,et al.Natural pollution test of composite and porcelain insulators under AC and DC stress[J].High Voltage Engineering,2009,35(9):2322-2328(in Chinese).
[7]吴光亚,蔡炜,卢燕龙,等.直流输电线路绝缘子串片数的防污设计[J].高电压技术,2001,27(6):51-53.Wu Guangya,Cai Wei,Lu Yanlong,et al.Selection of numbers of insulator of pollution insulator strings for DC transmission line[J].High Voltage Engineering,2001,27(6):51-53(in Chinese).
[8]高海峰,樊灵孟,李庆峰,等.±500kV高肇直流线路绝缘子积污特性对比分析[J].高电压技术,2010,36(3):672-677.Gao Haifeng,Fan Lingmeng,Li Qingfeng,et al.Comparative analysis on pollution deposited performances of insulators on the±500 kV Gao-Zhao DC transmission Line[J].High Voltage Engineering,2010,36(3):672-677(in Chinese).
[9]毕晓甜,任昂,沈庆河,等.±660kV银东线绝缘子串的自然积污特性研究[J].绝缘材料,2015,48(10):45-49+54.Bi Xiaotian,Ren Ang,Shen Qinghe,et al.Study on natural contamination characteristics of±660 kV Yin-Dong DC transmission line insulators[J].Insulating Materials,2015,48(10):45-49+54(in Chinese).
[10]律方成,秦春旭,郭文义,等.高海拔地区±800kV特高压直流输电系统绝缘子带电自然积污特性[J].高电压技术,2013,39(3):513-519.LüFangcheng,Qin Chunxu,Guo Wenyi,et al.Natural contamination deposited characteristics of±800 kV UHV DC insulators at high altitudes[J].High Voltage Engineering,2013,39(3):513-519(in Chinese).
[11]卢明,李瑶琴,李黎,等.哈郑特高压直流负极线路上U70BL型绝缘子自然积污规律[J].高电压技术,2016,42(2):557-563.Lu Ming,Li Yaoqin,Li Li,et al.Natural contamination deposit law of U70BL type insulators of Hami-Zhengzhou UHVDC negative line[J].High Voltage Engineering,2016,42(2):557-563(in Chinese).
[12]宿志一,刘燕生.我国北方内陆地区线路与变电站用绝缘子的直、交流自然积污试验结果的比较[J].电网技术,2004,29(10):13-17.Su Zhiyi,Liu Yansheng.Comparison of natural contaminants accumulated on surfaces of suspension and post insulators with DC and AC Stress in Northern China's Inland Areas[J].Power System Technology,2004,29(10):13-17(in Chinese).
[13]朱义东,杨铁军,于存湛,等.穆家换流站交、直流系统外绝缘积污特性研究[J].东北电力技术,2012,33(12):40-42.Zhu Yidong,Yang Tiejun,Yu Cunzhan,et al.Study on pollution deposited performances of AC&DC system in mujia converter station[J].Northeast Electric Power Technology,2012,33(12):40-42(in Chinese).
[14]王少华,胡文堂,何文林,等.自然积污绝缘子的污闪电压和泄漏电流特性试验研究[J].电网技术,2013,37(10):2855-2860.Wang Shaohua,Hu Wentang,He Wenlin,et al.Experimental research on pollution flashover voltage and leakage current characteristics of naturally polluted insulators[J].Power System Technology,2013,37(10):2855-2860(in Chinese).
[15]胡文堂,王少华,姜文东,等.基于污闪电压的自然积污绝缘子外绝缘状态评价[J].浙江电力,2016,35(3):1-3+9.Hu Wentang,Wang Shaohua,Jiang Wendong,et al.External insulation condition evaluation of naturally polluted insulators based on pollution flashover voltage[J].Zhejiang Electric Power,2016,35(3):1-3+9(in Chinese).
[16]宿志一.换流站直流绝缘子的自然积污特性与直交流积污比[C].//2007中国电机工程学会高电压专委会学术年会论文集.北京,2007.
[17]张锐,黄道春,吴光亚,等.交流特高压支柱瓷绝缘子的自然积污特性研究[J].电网技术,2014,38(11):3217-3223.Zhang Rui,Huang Daochun,Wu Guangya,et al.Study on natural contamination characteristics of UHV AC post porcelain insulator[J].Power System Technology,2014,38(11):3217-3223(in Chinese).
[18]李秀广,郭飞,刘世涛,等.复合绝缘子与瓷质绝缘子自然积污特性研究[J].宁夏电力,2016(1):40-44.Li Xiuguang,Guo Fei,Liu Shitao,et al.Natural contamination characteristics between composite insulator and porcelain insulator[J].Ningxia Electric Power,2016(1):40-44(in Chinese).
[19]王康,王建国,江健武,等.涂覆RTV对瓷绝缘子盐密和灰密影响的对比观测[J].高电压技术,2012,38(4):847-854.Wang Kang,Wang Jianguo,Jiang Jianwu,et al.Contrast observation on the influence of ESDD and NSDD of porcelain insulator with RTV[J].High Voltage Engineering,2012,38(4):847-854(in Chinese).
[20]王建国,王康,姚森敬,等.不带电条件下复合绝缘子与XP-70绝缘子自然积污特性对比分析[J].高电压技术,2013,39(4):957-963.Wang Jianguo,Wang Kang,Yao Senjing,et al.Comparison and analysis on natural contamination characteristics of uncharged composite insulator and XP-70 insulator[J].High Voltage Engineering,2013,39(4):957-963(in Chinese).
[21]陈昕.基于变电站模拟支柱绝缘子的汕头电网自然积污特性研究[J].华北水利水电大学学报(自然科学版),2015,36(1):70-75.Chen Xi.Research on Natural contamination depositing characteristics of simulated post insulators for transformer substations in Shantou Power Grid[J].Journal of North China University of Water Resources and Electric Power,2015,36(1):70-75(in Chinese).