多个绕组的变压器温升试验方案及影响因素分析

Testing Methods and Influencing Factors of Multi-Winding Transformer Temperature Rise

阐述了制定多个绕组的变压器温升试验方案时需要考虑的相关技术要求,分析了影响多个绕组的变压器温升试验结果的主要因素,重点分析了环境温度的测量方法、预处理条件、绕组温度稳定状态的判断和热态电阻的测量方式对试验结果的影响,总结了试验注意事项及建议。

The relevant techniques used to draw up a plan of testing muhi-winding transformer temperature rise is illustrated. The influencing factors of multi-winding transformer temperature rise are analyzed. The influences on the test results about ambient temperature measurement method, pretreatment conditions, winding tempera- ture steady state judgment and thermal resistance measurement method are analyzed. The precautions and sug- gestions of the test are concluded.