| 变压器绕组热点温度热电类比计算模型仿真分析 |
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| 引用本文： | 陈伟根,李孟励,孙才新,苏小平,胡金星. 变压器绕组热点温度热电类比计算模型仿真分析[J]. 重庆大学学报(自然科学版), 2010, 33(12): 8-13 |
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| 作者姓名： | 陈伟根 李孟励 孙才新 苏小平 胡金星 |
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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,400044;重庆市城区供电局,重庆,400014 |
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| 基金项目： | 国家自然科学基金资助项目)50777069) |
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| 摘 要： | 变压器绕组的热点温度是决定变压器过载能力和油纸绝缘老化率的关键因素。在传统热理论基础上,考虑了温度对油粘度的影响,结合热电类比方法和IEEE推荐的热点温升模型提出一种预测变压器绕组热点温度的仿真模型。采用Runge-Kutta方法求解变压器实时的顶层油温和变压器绕组的热点温度,并与100kVA/5kV(ONAN)试验变压器的实测温度数据进行对比,仿真结果与实测数据有较好的一致性。
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| 关 键 词： | 变压器 绕组 热点温度 仿真模型 热电类比 |
| 收稿时间： | 2010-07-20 |
Simulation analysis of the thermal-electric analogy calculation model of transformer winding hot-spot temperature |
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| CHEN Wei-gen,LI Meng-li,SUN Cai-xin,SU Xiao-ping and HU Jin-xing. Simulation analysis of the thermal-electric analogy calculation model of transformer winding hot-spot temperature[J]. Journal of Chongqing University(Natural Science Edition), 2010, 33(12): 8-13 |
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| Authors: | CHEN Wei-gen LI Meng-li SUN Cai-xin SU Xiao-ping HU Jin-xing |
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| Affiliation: | State Key Laboratory of Power Transmission Equipment & System Safety and New Technology,Chongqing University,Chongqing 400044,P.R. China;State Key Laboratory of Power Transmission Equipment & System Safety and New Technology,Chongqing University,Chongqing 400044,P.R. China;State Key Laboratory of Power Transmission Equipment & System Safety and New Technology,Chongqing University,Chongqing 400044,P.R. China;State Key Laboratory of Power Transmission Equipment & System Safety and New Technology,Chongqing University,Chongqing 400044,P.R. China;Chongqing City Electric Power Company, Chongqing 400014, P.R. China |
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| Abstract: | The winding hot-spot temperature is one of the most critical parameters that determines the power transformer overloading capability and the aging rate of the oil-paper insulation. Based on the traditional thermal theory, the paper proposes a simulation model to predict transformer winding hot spot temperature taking into account oil viscosity changes with temperature, and combined with the thermal-electric analogy method and hot spot temperature rise model recommended by IEEE. The Runge-Kutta method is used to calculate top-oil temperature and winding hot-spot temperature of the transformer, and then compare them with the measured data obtained from the 100 kVA/5 kV (ONAN) experimental transformer. The simulation results are in good agreement with experimental data. |
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| Keywords: | transformer winding hot-spot temperature simulation model thermal-electric analogy |
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