智能电表负荷开关接触电阻特性的试验研究

针对实际交流负荷条件下智能电表负荷开关接触电阻的变化规律问题，介绍了一种智能电表负荷开关实负荷测试系统，在此基础上开展了一系列试验研究。研究结果表明：智能电表负荷开关触点分断时电弧现象较闭合时明显；触点开合电弧能量和操作次数间呈近似线性关系；接触电阻随试验次数增加有缓慢的增长趋势；物理退化模型中的退化率模型所表征的接触电阻的增长趋势快于线性累积模型。...

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Bibliographic Details
Published in电测与仪表 Vol. 51; no. 7; pp. 18 - 22
Main Author 庄磊 付真斌 赵良德
Format Journal Article
LanguageChinese
Published 国网安徽省电力公司电力科学研究院,合肥,230601 2014
Subjects
交流负荷
接触电阻
智能电表
物理退化模型
负荷开关
smart meter
physical degradation model
负荷开关
物理退化模型
load switch
contact resistance
接触电阻
AC load
智能电表
交流负荷
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ISSN1001-1390

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Summary:针对实际交流负荷条件下智能电表负荷开关接触电阻的变化规律问题，介绍了一种智能电表负荷开关实负荷测试系统，在此基础上开展了一系列试验研究。研究结果表明：智能电表负荷开关触点分断时电弧现象较闭合时明显；触点开合电弧能量和操作次数间呈近似线性关系；接触电阻随试验次数增加有缓慢的增长趋势；物理退化模型中的退化率模型所表征的接触电阻的增长趋势快于线性累积模型。
Bibliography:A real-load test system for the load switch is introduced in this paper and a series of experiments are pre- formed aiming at the problem of the contact resistance variation of the load switch in the smart meter under real condi- tions. Research results show that the arc phenomenon is much more obvious with the contact breaking than that with the contact closing, and the operating times and the arc energy of the contact breaking and closing present an approxi- mate linear relationship. In addition, the contact resistance will increase slowly with the number of trials, and the in- creasing trend of the contact resistance characterized by the model of degradation rate is faster than those characterized by the model of linear cumulative growth.
ZHUANG Lei, FU Zhen-bin, ZHAO Liang-de （Anhui Electric Power Research Institute, Hefei 230601, China）
smart meter, load switch, AC load, contact resistance, physical degradation model
23-1202/TH
ISSN:1001-1390