Pt100热阻测量回路引起温度保护误动的分析及预防

华电技术 ›› 2014, Vol. 36 ›› Issue (4): 63-64.

Pt100热阻测量回路引起温度保护误动的分析及预防

(华电能源股份有限公司哈尔滨第三发电厂，哈尔滨〓150024)

出版日期:2014-04-25 发布日期:2014-06-16

Analysis on false tripping of temperature protection caused by Pt100 thermistor measurement circuit and prevention

(Harbin Third Power Plant of Huadian Energy Company Limited, Harbin 150024, China)

Online:2014-04-25 Published:2014-06-16

摘要/Abstract

摘要： 摘要：介绍了温度的变化规律与热电阻测温原理，分析了热电阻测量回路的特点，为避免使用以热电阻为一次元件的温度保护回路发生误动，提出了改进措施。

关键词: 关键词：安全稳定, 热电阻, 温度保护, 误动

Abstract: Abstract:The temperature variation regularity and measuring principle of thermal resistance were introduced, the features of the thermistor measurement circuit were analyzed. the result in this paper advanced the improved step for preventing false tripping of the temperature protection circuit using the thermistor as primary element.

Key words: Keywords:thermistor, temperature protection, false tripping, safety and stability

赵冬冬，付浩. Pt100热阻测量回路引起温度保护误动的分析及预防[J]. 华电技术, 2014, 36(4): 63-64.

ZHAO Dongdong, FU Hao. Analysis on false tripping of temperature protection caused by Pt100 thermistor measurement circuit and prevention[J]. Huadian Technology, 2014, 36(4): 63-64.

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[2]	王天民;张小刚;高波. 某500kV主变压器失灵保护拒动原因分析[J]. 华电技术, 2012, 34(9): 65-66.