基于热网络法的隔离开关热稳定性分析  

Thermal Stability Analysis of Disconnecting Switch Based on Thermal Network Method

作　　者：王稚惠[1] 谢勇 由佳欣[3] 梁慧敏[3] 翟国富[3] 

机构地区：[1]哈尔滨电机厂有限责任公司,黑龙江哈尔滨150040 [2]桂林航天电子有限公司,广西桂林541002 [3]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《机电元件》2013年第2期38-43,共6页Electromechanical Components

摘　　要：隔离开关在实际运行中由于电阻损耗发热而温度升高,甚至超过允许温升,从而影响其工作性能。为了保证其工作的安全性和可靠性,建立了热网络模型,对隔离开关进行端部温度及最高温度的计算与分析,并对比有限元三维仿真结果验证了热网络方法的准确性。该方法可用于工程现场应用,便于快速得到精确的计算结果。The working performance of disconnecting switch is affected by the maximum permissible tempera- ture exceeding which is caused by the heat loss of resistance. Thermal network model of disconnecting switch is es- tablished. It is used for calculation and analysis of the end point temperature and maximum temperature to ensure its safety and reliability. The accuracy of the thermal network model was verified by the results of 3 D finite element method simulation. This method can be used for fast calculation under the accuracy request in engineering field.

关 键 词：热网络法 隔离开关 热稳定性 分析 

分 类 号：TM564.1[电气工程—电器]