树脂浇注干式变压器温升分析与计算  

Temperature Rise Analysis and Calculation of Cast Resin Dry-type Transformers

作　　者：熊兰[1] 赵艳龙[1] 杨子康[1] 宋道军[2] 席朝辉[2] 何为[1] 

机构地区：[1]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 [2]重庆市电力公司,重庆400014

出　　处：《高电压技术》2013年第2期265-271,共7页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2009CB724508-1);国家自然科学基金(51077139)~~

摘　　要：为更准确地反映树脂浇注干式变压器的内部温度情况,根据变压器的损耗,对干式变压器的整体温升进行了计算。同时结合ANSYS软件,对干式变压器进行了温度场仿真计算,分析了干式变压器的铁芯和绕组的温度分布情况。对某供电局开闭所内站用的干式变压器建立了温度监测系统,获得其三相温度分别为62.19、63.92、62.57°C。通过比对实际数据、理论计算和仿真分析的结果,指出干式变压器运行中的最热点位置位于低压绕组距底部70%高度的位置,该处即为干变的薄弱环节,可作为对干式变压器进行定点监测的参考依据。In order to reflect the temperature inside cast resin dry-type transformers more accurately,temperature rising of a dry-type transformer was mathematically calculated according to power losses of the transformer.Meanwhile,by using the software ANSYS,a temperature field of the dry-type transformers was also simulated.Consequently,the temperature distribution of iron core and windings of the transformer were analyzed.A temperature monitoring system was established in a dry-type transformer in sub-section post,and the temperatures of three phases of the transformer were obtained,which were 62.19,63.92 and 62.57°C.According to the comparison among the theoretical calculation,the simulation results,and the actual measurement,it is concluded that the hottest spot in an operating dry-type transformer is in the low-voltage winding at 70% height from the bottom.The hottest spot is normally considered the weak link of an operating dry-type transformer,and this is a practical reference for establishing effective monitoring on dry-type transformers.

关 键 词：干式变压器 损耗 温升计算 ANSYS软件 温度场分析 温度监测 ZigBee传感器 

分 类 号：TM412[电气工程—电器]