变压器绕组过载温升测量方法的比较

目的对变压器绕组温升的测量,常见的测温方法有温度计法和电阻法。为了明晰上述方法的异同,为电气安全检测过程中变压器绕组温升测量的方法选择和具体实施提供依据。方法使用了实验室比对的均匀样品,分别采用热电偶法、带电测量法和倒推法进行研究分析。结果与结论对上述三种方法分别从标准符合性、测量精度、不确定度等关键环节进行了分析比较,基于分析结果,对于依据GB9706.1-2007和GB 4793.1-2007标准对医用电气设备内的电源变压器进行的绕组过载温升试验,建议采用倒推法进行测量。

The Comparison of Measure Methods about Transformer's Overload Temperature

Objective The common measure methods about transformer's temperature are thermometer method and resistance method.The purpose of doing this test is defining the similarities and differences of above methods.Methods Doing test on well-proportioned samples with the thermocouple method,live measurement and reverse method.Results and Conclusion After the test,comparing the results in different aspects,such as accuracy,uncertainty and so on.The best method about the transformer's overload temperature is reverse ...