表面粗糙度对变电站绝缘子冲击闪络特性影响  

Study Based on surface roughness for the Impulse Flashover characteristics on the substation insulator

作　　者：姚鑫[1] 张长胜[1] 谭向宇 马仪 王科 李川[1] YAO Xin ZHANG Changsheng TAN Xiangyu MA Yi WANG Ke LI Chuan(Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, China Yunnan Power Grid Electric Power Research Institute Co. , Ltd. Kunming 650217, China)

机构地区：[1]昆明理工大学信息工程与自动化学院,昆明650500 [2]云南电网有限责任公司电力科学研究院,昆明650217

出　　处：《云南电力技术》2017年第1期136-139,共4页Yunnan Electric Power

摘　　要：为了研究表面粗糙度对绝缘子闪络特性的影响,使用了不同目数的砂纸对绝缘子表面进行均匀打磨,并利用激光共聚焦显微镜对绝缘子表面粗糙度进行量化处理。利用陡前沿冲击试验装置产生标准雷电冲击,并对不同粗糙度的绝缘子施加正负标准雷电波,观察了在不同极性的标准雷电波的作用下绝缘子沿面闪络电压和表面粗糙度的关系,并从实验得随着绝缘子表面粗糙度的增大绝缘子50%闪络电压逐渐降低,在正、负极性的标准雷电波新绝缘子即未经过砂纸打磨的绝缘子的平均50%击穿电压最高,分别为424.9 k V,429.1 k V,各个粗糙度下的绝缘子的闪络电压与未打磨的绝缘子的闪络电压的比值在半对数坐标系下与粗糙度的关系呈线性关系。In order to study the surface roughness of the insulator Flashover characteristics, using a different number of eyes on the insulator surface sandpaper uniformly polished, and the use of laser scanning confocal microscope insulator surface roughness is quantized. In this paper, a steep impact test device generates standard lightning impulse, and applying different roughness insulator negative standard lightning wave observed under the effect of different polarity standard lightning wave insulator surface flashover voltage and the relationship between surface roughness and from experiments have flashover voltage ratio under roughness of each insulator flashover voltage insulator and unpolished in semi-logarithmic coordinates relationships with the roughness of the linear relationship.

关 键 词：表面粗糙度 绝缘子 闪络 标准雷电冲击 陡前沿冲击试验 

分 类 号：TM216[一般工业技术—材料科学与工程] TM63[电气工程—电工理论与新技术]