基于残压比的限压型电涌保护器失效预判分析
|
摘要
针对氧化锌压敏电阻在8/20μs电流波冲击下的老化、劣化问题,采用8/20μs对压敏电阻多个参数进行冲击试验,进行氧化锌压敏电阻劣化的理论分析。分析得出,当压敏电压值大于其初始值±8.6%、漏电流的值大于17.2μA时,非线性系数α的值减小到12～11或变化率达到68%左右。残压比K的变化率超过8.5%时,可以认为该试验样品已经劣化。该研究结果在生产氧化锌压敏片或测试其性能以及日常使用MOV型SPD时都具有一定的参考价值。
Aiming at the aging deterioration problem of zinc oxide varistor under the impact of 8/20 μs current wave,the theoretical analysis of the variation of zinc oxide varistor was carried out,using 8/20 μs impact test on varistor.The value of the nonlinear coefficient decreases to 12 to 11 or the change rate reaches 68% when the value of the leakage current is greater than 17.2 μA and the value of the varistor voltage is greater than its initial value of ±8.6%.When the rate of change of the residual pressure ratio exceeds 8.5%,it can be considered that the test sample has deteriorated.The results of the study have a certain reference value in the production of zinc oxide varistor or testing its performance and daily use of MOV SPD.
Aiming at the aging deterioration problem of zinc oxide varistor under the impact of 8/20 μs current wave,the theoretical analysis of the variation of zinc oxide varistor was carried out,using 8/20 μs impact test on varistor.The value of the nonlinear coefficient decreases to 12 to 11 or the change rate reaches 68% when the value of the leakage current is greater than 17.2 μA and the value of the varistor voltage is greater than its initial value of ±8.6%.When the rate of change of the residual pressure ratio exceeds 8.5%,it can be considered that the test sample has deteriorated.The results of the study have a certain reference value in the production of zinc oxide varistor or testing its performance and daily use of MOV SPD.
引文
[1] 贾东旭,王玉平.我国低压压敏电阻的发展与标准化[C]//中国工程建设标准化协会,2007.
[2] 楼嘉懿.基于显微组织的MOV在不同冲击条件下的破坏机理研究[D].南京:南京信息工程大学,2016.
[3] 陈璞阳,杨仲江,徐乐.压敏电阻冲击老化过程中残压比变化的分析[C]//防雷减灾论坛,2014.
[4] 李祥超,陈则煌,周中山,等.限压型电涌保护器在不同条件下劣化性能的分析[J].电器与能效管理技术,2014(14):12-17.
[5] 张枨.氧化锌压敏电阻老化过程中非线性系数的研究[C]//中国气象学会年会,2012.
[6] 师正,谭涌波,柴健,等.MOV压敏电阻静态参数变化的特征分析[J].电瓷避雷器,2012(5):59-63.
[7] 郑文奎.高压梯度ZnO压敏电阻器的配方及制备工艺研究[D].西安:西安电子科技大学,2013.
[8] 张南法,孙祯,丁留华.氧化锌非线性电阻的工频特性[J].电气工程与自动化,2013(4):38-43.
[9] 张树高,季幼章.氧化锌压敏电阻的老化机理[J].功能材料,1993(6):529-532.
[10] 李祥超,姜翠宏,赵学余.防雷工程设计与实践[M].北京:气象出版社,2010:124-126.
[11] 肖杨,赵永亮,刘仁磊,等.基于雷电冲击试验的压敏电阻前后级能量配合研究[J].电器与能效管理技术,2008(3):9-13.
[12] GUPTA T K,CARLSON W G.A grain-boundary defect model for instability/stability of a ZnO varistor [J].Journal of Materials Science,1985,20(10):3487-3500.
[2] 楼嘉懿.基于显微组织的MOV在不同冲击条件下的破坏机理研究[D].南京:南京信息工程大学,2016.
[3] 陈璞阳,杨仲江,徐乐.压敏电阻冲击老化过程中残压比变化的分析[C]//防雷减灾论坛,2014.
[4] 李祥超,陈则煌,周中山,等.限压型电涌保护器在不同条件下劣化性能的分析[J].电器与能效管理技术,2014(14):12-17.
[5] 张枨.氧化锌压敏电阻老化过程中非线性系数的研究[C]//中国气象学会年会,2012.
[6] 师正,谭涌波,柴健,等.MOV压敏电阻静态参数变化的特征分析[J].电瓷避雷器,2012(5):59-63.
[7] 郑文奎.高压梯度ZnO压敏电阻器的配方及制备工艺研究[D].西安:西安电子科技大学,2013.
[8] 张南法,孙祯,丁留华.氧化锌非线性电阻的工频特性[J].电气工程与自动化,2013(4):38-43.
[9] 张树高,季幼章.氧化锌压敏电阻的老化机理[J].功能材料,1993(6):529-532.
[10] 李祥超,姜翠宏,赵学余.防雷工程设计与实践[M].北京:气象出版社,2010:124-126.
[11] 肖杨,赵永亮,刘仁磊,等.基于雷电冲击试验的压敏电阻前后级能量配合研究[J].电器与能效管理技术,2008(3):9-13.
[12] GUPTA T K,CARLSON W G.A grain-boundary defect model for instability/stability of a ZnO varistor [J].Journal of Materials Science,1985,20(10):3487-3500.