盐雾对短空气间隙工频击穿电压的影响  

Influence of Salt Spray on Power Frequency Breakdown Voltage of Short Air Gap

作　　者：谢梁[1] 徐涛[1] 钟正[2] 周松松[2] 刘云鹏[2] 耿江海[2] 

机构地区：[1]中国电力科学研究院,武汉430074 [2]华北电力大学(保定),河北保定071003

出　　处：《电瓷避雷器》2017年第2期123-127,共5页Insulators and Surge Arresters

基　　金：国家电网公司科技项目资助(编号:gy71-14-033)

摘　　要：目前国内尤其是华北地区各大城市均持续出现雾霾天气,雾霾对输电线路外绝缘的影响不容忽视,因此通过盐雾模拟雾霾天气,研究盐雾对短空气间隙工频击穿电压的影响具有重要实际意义。以击穿电压最低的棒-板空气间隙为模型,分别对5 cm、10 cm、15 cm空气间隙在不同雾水含量和不同雾水电导率下进行工频电压击穿试验。结果表明:短空气间隙工频击穿电压受雾水电导率和雾水含量的影响,并且在不同雾水含量下,雾水电导率对击穿电压的影响程度不同,并通过粒子群算法(particle swarm optimization,PSO)对实验据进行拟合,得到了相应工频击穿电压的计算公式。At present, haze weather has appeared continually in the major cities in China, especially in North China. The influence of fog and haze on the insulation of transmission line cannot be ignored. Therefore, the study of the influence of salt spray on AC breakdown voltage of air gap by salt spray simulating fog and haze weather is very important. The rod-plane air gap model with the lowest breakdown voltage in 5 cm, 10cm and 15 cm respectively on the air gap is adopted to conduct the voltage breakdown test under different fog conductivity and different water content. The results show that the short air gap breakdown voltage is affected by the fog conductivity and water content, and in different water content fog conductivity has shown different degrees of influence on breakdown voltage, the test data is fitted through the particle swarm optimization （PSO）, the calculation formula of the AC breakdown voltage is obtained.

关 键 词：盐雾 棒-板间隙 击穿电压 电导率 雾水含量 

分 类 号：TM75[电气工程—电力系统及自动化]