人工雾霾环境下XP-70绝缘子的交流闪络特性

发布时间：2018-07-17 01:02

【摘要】：日益加剧的雾霾天气给电力系统的安全运行造成了诸多威胁,但目前的相关研究并不深入。为此以XP-70型瓷绝缘子作为研究对象,在自建的人工模拟雾霾试验平台下开展交流污闪试验,测量了不同颗粒物浓度、不同颗粒物粒径、不同相对湿度以及不同雾水电导率下绝缘子表面的闪络电压。研究结果表明,不同颗粒物浓度下绝缘子闪络电压存在差异,绝缘子闪络电压随着颗粒物浓度的增大而减小。颗粒物粒径越小,绝缘子闪络电压越小,但颗粒物粒径大小对绝缘子闪络电压影响并不明显。环境相对湿度对绝缘子闪络电压影响显著,相对湿度越大,绝缘子闪络电压越小。绝缘子闪络电压随着雾水电导率的增大而近似线性减小,这主要与雾水电导率增加了绝缘子表面等值盐密有关。
[Abstract]:The increasing haze weather has caused many threats to the safe operation of power system, but the related research is not deep. In this paper, the XP-70 porcelain insulator was used as the research object. The AC pollution flashover test was carried out under the artificial simulated haze test platform, and different particle concentrations and particle sizes were measured. The flashover voltage of insulator surface under different relative humidity and different fog water conductivity. The results show that the flashover voltage of insulator varies with the concentration of particles, and the flashover voltage of insulator decreases with the increase of particle concentration. The smaller the particle size is, the smaller the flashover voltage of insulator is, but the influence of particle size on flashover voltage is not obvious. The effect of relative humidity on the flashover voltage of insulator is significant, and the larger the relative humidity, the smaller the flashover voltage of insulator. The flashover voltage of insulator decreases linearly with the increase of foggy water conductivity, which is mainly related to the increase of equivalent salt density on the surface of insulator.
【作者单位】：国网冀北电力有限公司技能培训中心;华北电力大学新能源电力系统国家重点实验室;国网聊城供电公司;
【分类号】：TM216

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