| 以箱壁温度为判据的油浸式变压器绕组热点温度计算模型及试验分析 |
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| 引用本文： | 李剑,刘兴鹏,王有元,陈伟根,邓宗权.以箱壁温度为判据的油浸式变压器绕组热点温度计算模型及试验分析[J].高电压技术,2011,37(10):2344-2349. |
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| 作者姓名： | 李剑 刘兴鹏 王有元 陈伟根 邓宗权 |
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| 作者单位： | 重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆,400030 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)(2009CB724508); 国家创新研究群体基金(51021005)~~ |
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| 摘 要： | 电力变压器的热点温度是影响其绝缘寿命非常重要的因素，准确估计电力变压器热点温度，有助于提高电力变压器的经济与安全运行水平。为此，提出了一种估计变压器绕组热点温度的改进方法。该方法依据变压器热路模型，采用变压器油箱壁温度来估计绕组热点温度。为了验证该方法的准确性，在实验室的试验变压器上进行了负载试验，得到不同负载下的变压...
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| 关 键 词： | 电力变压器 热点温度 箱壁温度 热路模型 绝缘寿命 负载试验 |
Model of Hot Spot Temperature in Oil-immersed Transformers Using Temperature Estimation of Tank Wall |
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| LI Jian,LIU Xing-peng,WANG You-yuan,CHEN Wei-gen,DENG Zong-quan.Model of Hot Spot Temperature in Oil-immersed Transformers Using Temperature Estimation of Tank Wall[J].High Voltage Engineering,2011,37(10):2344-2349. |
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| Authors: | LI Jian LIU Xing-peng WANG You-yuan CHEN Wei-gen DENG Zong-quan |
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| Affiliation: | LI Jian,LIU Xing-peng,WANG You-yuan,CHEN Wei-gen,DENG Zong-quan(State Key Laboratory of Power Transmission Equipment & System Security and New Technology,Chongqing University,Chongqing 400030,China) |
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| Abstract: | Hot spot temperature is a very important factor that influences lifetime of insulation in power transformers.Accurate estimation of the hot spot temperatures of transformer windings is helpful to improving economic and safe operation levels of transformers.Consequently,an improved approach was presented to estimate hot spot temperatures of transformer windings.The improved approach was based on a thermal circuit of power transformers.Temperatures of transformer walls were used to estimate the hot spot tempe... |
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| Keywords: | power transformer hot spot temperature tank wall temperature heat circuit model insulation lifetime load test |
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