盐雾对染污绝缘子操作冲击特性的影响研究
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摘要
雾霾中水滴与可溶性导电物质共存使空气呈现一定的导电性,从而在原有绝缘子染污状态下叠加了污染成分。以XP10-160型瓷质悬式绝缘子为试品,通过盐雾法模拟自然环境下存在的高电导率雾,开展了绝缘子表面洁净及染污下的操作冲击试验,分析了不同盐密、雾水电导率下的操作冲击闪络特性,并仿真分析了高电导率雾对绝缘子表面场强分布的影响。在试验过程中采集到了在不同雾水电导率下绝缘子的操作冲击闪络波形,其波头、波尾时间均较标准波形有所缩短,这也印证了相关文献中提到的非标准操作波。
Water is mixed with soluble conductive material in haze so that the air has certain conductivity, resulting in extra mixed pollution components on the surface of the existing polluted insulator. In this paper, with the XP10-160 ceramic suspension insulator being used as the sample, the switching impulse test of the clean and polluted insulator is carried out by simulating high conductivity fog under the natural environment by salt fog method. This paper analysis the flashover characteristics of switching impulse under different salt density and water fog conductivity. The effect of high conductivity fog on the field intensity distribution of insulator is simulated and analyzed. This paper collects the waveform of switching impulse flashover in different fog conductivity, and the wave head and wave tail time are shorter than the standard waveform, which also confirms the non-standard switching impulse wave that mentioned in the relevant literature.
Water is mixed with soluble conductive material in haze so that the air has certain conductivity, resulting in extra mixed pollution components on the surface of the existing polluted insulator. In this paper, with the XP10-160 ceramic suspension insulator being used as the sample, the switching impulse test of the clean and polluted insulator is carried out by simulating high conductivity fog under the natural environment by salt fog method. This paper analysis the flashover characteristics of switching impulse under different salt density and water fog conductivity. The effect of high conductivity fog on the field intensity distribution of insulator is simulated and analyzed. This paper collects the waveform of switching impulse flashover in different fog conductivity, and the wave head and wave tail time are shorter than the standard waveform, which also confirms the non-standard switching impulse wave that mentioned in the relevant literature.
引文
[1]康钧,李佩,王生富,等.盐雾对“棒-板”间隙交直流击穿电压的影响[J].高电压技术,2015,41(6):1989-1994.KANG Jun,LI Pei,WANG Shengfu,et al.Influence of salt spray on AC/DC breakdown voltage of rod-plane gap[J].High Voltage Engineering,2015,41(6):1989-1994.
[2]宿志一.雾霾天气对输变电设备外绝缘的影响[J].电网技术,2013,37(8):2284-2290.SU Zhiyi.Influences of fog-haze on external insulation of transmission and distribution equipments[J].Power System Technology,2013,37(8):2284-2290.
[3]宿志一.空气中冲击击穿试验在线路绝缘子检测中的应用[J].电网技术,2014,38(7):1798-1805.SU Zhiyi.Impulse puncture tests in air applied in line insulator detecting test[J].Power System Technology,2014,38(7):1798-1805.
[4]范建斌,郑健超,王来.雷电冲击电压下沿面闪络特性的研究[J].电网技术,2002,27(2):13-16.Fan Jian-bin,Zheng Jian-chao,Wang Lai.Flashover characteristic along surface under lightning impulse voltage[J].Power System Technology,2002,27(2):13-16.
[5]陈勇,万启发,张祥贵.特高压绝缘子串冲击电压放电特性研究[J].高电压技术,2003,29(3):29-30.Chen yong,Wan qifang,Zhang xianggui.Research on the impulse discharge on UV Long insulator string[J].High Voltage Engineering,2003,29(3):29-30.
[6]韩永霞,唐力,郝艳捧,等.特高压直流线路复合绝缘子悬挂方式对其冲击闪络特性的影响研究[J].高电压技术,2015,41(4):1272-1277.HAN Yongxia,TANG Li,HAO Yanpeng,et al.Influence of suspension patterns of UHVDC composite insulator on its impulse flashover characteristics[J].High Voltage Engineering,2015,41(4):1272-1277.
[7]王铭民,周志成,王凯琳,等.高电导率雾对染污瓷绝缘子闪络特性的影响[J].高压电器,2016,52(1):30-35.WANG Mingmin,ZHOU Zhicheng,WANG Kailin,et al.Analysis on flashover performance of polluted porcelain insulators in high conductivity fog environment[J].High Voltage Apparatus,2016,52(1):30-35.
[8]项阳,郭洁,温定筠.污秽潮湿状态下有机复合绝缘子周围电场分布研究[J].南方电网技术,2010,4(增1):36-40XIANG Yang,GUO Jie,WEN Dingjun.Study on electric field around transmission line composite insulators under polluted and wet condition[J].Southern Power System Technology,2010,4(S1):36-40.
[9]S Chakravorti,P K Mukherjee.Power Frequency and Impulse Field Calculation around a HV Insulator with Uniform or Nonuniform Surface Pollution[J].IEEE Transactions on Electrical Insulation(S0018-9367),1993,28(1):43-53.
[10]R S Gorur,K Subramanian.Use of Surface Resistance for Assessing Vulnerability of HV Outdoor Insulator to Contamination Flashover[C].Annual report conference on electrical insulation and dielectric phenomena,2003:406-409.
[11]宿志一.雾霾天气对输变电设备外绝缘的影响[J].电网技术,2013,37(8):2284-2290.SU Zhiyi.Influences of Fog-Haze on External Insulation of Transmission and Distribution Equipments[J].Power System Technology,2013,37(8):2284-2290.
[12]交流系统高压绝缘子人为污染试验:EN 60507-2014[S].德国:欧洲标准化协会,2014.Artificial pollution tests on high-voltage ceramic and glass insulators to be used on a.c.systems:EN 60507-2014[S].Germany:European Committee for Standardization,2014.
[13]刘向实.污秽条件下复合绝缘子电场仿真研究[J].电瓷避雷器,2014(5):31-36.LIU Xiangshi.Study on electric field distribution of composite insulator under pollution conditions[J].Insulators and Surge Arresters,2014(5):31-36.
[14]彭波,汤美云,周卫华,等.污秽绝缘子在不同脉冲电压条件下的闪络特性研究[J].高压电器,2014,50(5):51-55,62.PENG Bo,TANG Meiyun,ZHOU Weihua,et al.Flashover characteristics of polluted insulators under different impulse voltage waveforms[J].High Voltage Apparatus,2014,50(5):51-55,62.
[2]宿志一.雾霾天气对输变电设备外绝缘的影响[J].电网技术,2013,37(8):2284-2290.SU Zhiyi.Influences of fog-haze on external insulation of transmission and distribution equipments[J].Power System Technology,2013,37(8):2284-2290.
[3]宿志一.空气中冲击击穿试验在线路绝缘子检测中的应用[J].电网技术,2014,38(7):1798-1805.SU Zhiyi.Impulse puncture tests in air applied in line insulator detecting test[J].Power System Technology,2014,38(7):1798-1805.
[4]范建斌,郑健超,王来.雷电冲击电压下沿面闪络特性的研究[J].电网技术,2002,27(2):13-16.Fan Jian-bin,Zheng Jian-chao,Wang Lai.Flashover characteristic along surface under lightning impulse voltage[J].Power System Technology,2002,27(2):13-16.
[5]陈勇,万启发,张祥贵.特高压绝缘子串冲击电压放电特性研究[J].高电压技术,2003,29(3):29-30.Chen yong,Wan qifang,Zhang xianggui.Research on the impulse discharge on UV Long insulator string[J].High Voltage Engineering,2003,29(3):29-30.
[6]韩永霞,唐力,郝艳捧,等.特高压直流线路复合绝缘子悬挂方式对其冲击闪络特性的影响研究[J].高电压技术,2015,41(4):1272-1277.HAN Yongxia,TANG Li,HAO Yanpeng,et al.Influence of suspension patterns of UHVDC composite insulator on its impulse flashover characteristics[J].High Voltage Engineering,2015,41(4):1272-1277.
[7]王铭民,周志成,王凯琳,等.高电导率雾对染污瓷绝缘子闪络特性的影响[J].高压电器,2016,52(1):30-35.WANG Mingmin,ZHOU Zhicheng,WANG Kailin,et al.Analysis on flashover performance of polluted porcelain insulators in high conductivity fog environment[J].High Voltage Apparatus,2016,52(1):30-35.
[8]项阳,郭洁,温定筠.污秽潮湿状态下有机复合绝缘子周围电场分布研究[J].南方电网技术,2010,4(增1):36-40XIANG Yang,GUO Jie,WEN Dingjun.Study on electric field around transmission line composite insulators under polluted and wet condition[J].Southern Power System Technology,2010,4(S1):36-40.
[9]S Chakravorti,P K Mukherjee.Power Frequency and Impulse Field Calculation around a HV Insulator with Uniform or Nonuniform Surface Pollution[J].IEEE Transactions on Electrical Insulation(S0018-9367),1993,28(1):43-53.
[10]R S Gorur,K Subramanian.Use of Surface Resistance for Assessing Vulnerability of HV Outdoor Insulator to Contamination Flashover[C].Annual report conference on electrical insulation and dielectric phenomena,2003:406-409.
[11]宿志一.雾霾天气对输变电设备外绝缘的影响[J].电网技术,2013,37(8):2284-2290.SU Zhiyi.Influences of Fog-Haze on External Insulation of Transmission and Distribution Equipments[J].Power System Technology,2013,37(8):2284-2290.
[12]交流系统高压绝缘子人为污染试验:EN 60507-2014[S].德国:欧洲标准化协会,2014.Artificial pollution tests on high-voltage ceramic and glass insulators to be used on a.c.systems:EN 60507-2014[S].Germany:European Committee for Standardization,2014.
[13]刘向实.污秽条件下复合绝缘子电场仿真研究[J].电瓷避雷器,2014(5):31-36.LIU Xiangshi.Study on electric field distribution of composite insulator under pollution conditions[J].Insulators and Surge Arresters,2014(5):31-36.
[14]彭波,汤美云,周卫华,等.污秽绝缘子在不同脉冲电压条件下的闪络特性研究[J].高压电器,2014,50(5):51-55,62.PENG Bo,TANG Meiyun,ZHOU Weihua,et al.Flashover characteristics of polluted insulators under different impulse voltage waveforms[J].High Voltage Apparatus,2014,50(5):51-55,62.