电测与仪表Issue(14)：32-37,6.
工频过电压耐受下氧化锌压敏电阻冲击老化性能研究
Research on the Impact Aging Performance of the Zinc Oxide Varistor Tolerated under the Power Frequency Overvoltage
摘要
Abstract
The impact aging experiment based on the tolerance of the Zinc Oxide varistor under continuous power frequency overvoltage was designed in this paper to solve the problem that the change in the breakdown voltage of the zinc oxide varistor chip at the early stage of the 8/20μs current pulse is too small to tell the aging degree of the zinc oxide varistor chip by the static parameter. Different situations of the impact aging, the tolerance of the zinc oxide varistor under different amplitudes of overvoltage and the relationship between the internal current during the tolerance (I in) and the time were studied. Experimental results were analyzedwith the help of the Dual Schottky barrier theory and the Voronoi grid model. The results showed that the larger the aging degree of the zinc oxide varistor chip impacted by the 8/20μs current pulse was, the larger the initial value of I in was; the increased rate of lin over time was proportional to the initial impact aging degree; and when the aging situations were equal, the larger the amplitude of overvoltagewas and the shorter the tolerance time was, the larger the initial value of Iin was. . These results can be used to determine the aging and deterioration degree of the zinc oxide varistor chip.关键词
氧化锌压敏电阻/8/20μs冲击老化/工频耐受下ZnO压敏电阻内部电流/耐受时间Key words
zinc oxide varistor/8/20μs current pulse impact aging/the internal current during the tolerance/the tolerance time分类
信息技术与安全科学引用本文复制引用
张欣,行鸿彦,杨天琦,宋晨曦..工频过电压耐受下氧化锌压敏电阻冲击老化性能研究[J].电测与仪表,2014,(14):32-37,6.基金项目
国家自然科学基金（61072133）；江苏省产学研联合创新资金计划（BY2013007-02）；江苏省高校科研成果产业化推进项目（JHB2011-15）；江苏省"六大人才高峰"项目；江苏省"传感网与现代气象装备"优势学科平台资助 （）
