摘要
陡波前冲击耐受电压试验在输电线路复合绝缘子内绝缘检测中具有突出的重要作用,针对现有规程中界面轴向加压距离无法有效检出高海拔复合绝缘子缺陷的问题,根据实验室试验分析和现场实际可能出现的陡波陡度,基于试验数据和公式拟合,最终确定适合高海拔复合绝缘子陡波前冲击电压试验的加压距离为20 cm,并验证了新加压距离下复合绝缘子内绝缘缺陷检出的有效性。
Steep wave impulse voltage test play a Prominent role on the internal insulation test of the transmission line,in view of the problem of the faulty description in the existing standards about the pressure length in the steep wave impulse voltage test, Through the laboratory test, Firstly, the 50cm pressure length which can not detect the internal flaws effectively is verified, Then according to the the actual possible steepness and based on the experimental data and formula fitting, the optimum pressure length of 20 cm was determined. And the validity of the detection of the defects in the insulation of composite insulators under the new compression length is verified.
出处
《云南电力技术》
2017年第3期35-37,共3页
Yunnan Electric Power
关键词
复合绝缘子
陡波冲击电压试验
内绝缘
加压距离
composite insulator
steep wave impulse voltage test
internal insulation
pressure length
