电瓷避雷器Issue(6)：46-51,6.DOI:10.16188/j.isa.1003-8337.2025.06.006
冲击老化过程中ZnO电阻片交/直流伏安特性研究
AC/DC Volt-Ampere Characteristics of ZnO Varistor During Impulse Aging
韩永霞 1余菲 1张杰 1吴忠洋 1黄军杰 1罗新 1孙泉2
作者信息
- 1. 华南理工大学电力学院,广州 510641
- 2. 西安高压电器研究院股份有限公司,西安 710077
- 折叠
摘要
Abstract
The impulse current withstand characteristics of ZnO varistor are one of the important factors to measure its stability and reliability,and the evaluation criteria of its impulse aging state is particularly im-portant.Therefore,the correlation and difference of AC/DC volt-ampere characteristics of ZnO varistor during impulse aging were analyzed comparatively by carrying out impulse aging test.Test results show that the AC u-iR characteristic curve drawn by peak-to-peak and the forward DC V-I characteristic curve are close to each other in the vicinity of the resistive current peak(DC current)of 1 mA,and the difference between them is about 1％.Moreover,when the DC reference voltage U1 mA of the ZnO varistor changes by about 5％,the change rate of the AC reference voltage u1 mA is about 3％.Thus,the DC re-ference voltage U1 mA and the power-frequency reference voltage evaluate the aging state of ZnO varistors with a similar effect.However,it is more stringent to use the DC reference voltage U1 mA as the evaluation criterion for the impulse withstand performance of the ZnO varistor.关键词
ZnO电阻片/冲击老化/直流伏安特性/交流伏安特性Key words
ZnO varistor/impulse aging/AC volt-ampere characteristics/DC volt-ampere characteristics引用本文复制引用
韩永霞,余菲,张杰,吴忠洋,黄军杰,罗新,孙泉..冲击老化过程中ZnO电阻片交/直流伏安特性研究[J].电瓷避雷器,2025,(6):46-51,6.
