基于混合应力法的XLPE绝缘电压耐受指数评估研究  

Evaluation on Voltage Withstand Index of XLPE Insulation Based on Mixed Stress Method

作　　者：陈新岗[1,2] 刘新宇 马志鹏 朱莹月[1] 谭悦 崔炜康 王梅林 CHEN Xingang;LIU Xinyu;MA Zhipeng;ZHU Yingyue;TAN Yue;CUI Weikang;WANG Meilin(Chongqing University of Technology,Chongqing 400054,China;Chongqing Engineering Research Center of Energy Internet,Chongqing 400054,China)

机构地区：[1]重庆理工大学,重庆400054 [2]重庆市能源互联网工程技术研究中心,重庆400054

出　　处：《绝缘材料》2022年第5期68-75,共8页Insulating Materials

基　　金：国家重点研发计划项目(2016YFB0900701)。

摘　　要：考虑序进应力试验和恒定应力试验之间的等效性问题,提出一种按照“序进-恒定-序进”应力顺序对样品施加电压的混合应力试验方法,并结合威布尔(Weibull)统计分析对XLPE薄片样品的电压耐受指数进行评估。结果表明:混合应力试验计算得到的电压耐受指数n为16.11,与恒定应力试验评估的n偏差为5.36%,且总评估时间比后者缩短了98.04%,证明该方法可以有效对XLPE绝缘的电压耐受指数进行评估。Considering the equivalence between sequential stress test and constant stress test, we proposed a mixed stress test method that the sample was applied voltage in the order of sequential advance stress-constant stresssequential advance stress, and then the voltage withstand index n of XLPE flake sample was evaluated by this method combined with Weibull statistical analysis. The results show that the voltage tolerance index n calculated by the mixed stress test is 16.11, the deviation between it and the n evaluated by the constant stress test is 5.36%,and its total evaluation time is shortened by 98.04% than that of the constant stress test, which proves that this method can evaluate the voltage withstand index of XLPE insulation effectively.

关 键 词：电压耐受指数 交联聚乙烯 电寿命 恒定应力试验 混合应力试验 

分 类 号：TM215[一般工业技术—材料科学与工程] TM247[电气工程—电工理论与新技术]