变压器用绕组温控仪原理及应用

Theory of Winding Temperature Indicator and Controller for Transformer and Its Application

目前,对变压器绕组温度的测量主要是通过热模拟测量方法,绕组温度表在油温表的基础上配备一台电流匹配器和电热元件,通过温度叠加来反映变压器绕组温度。这种测温方法具有简单、适用的特点。就绕组温控仪及其配套匹配器的入网检定和温度控制节点的整定进行了讨论,对绕组温控仪的实际使用有一定指导意义。

The way to obtain the winding temperature of transformer is heating simulation method at present, that is, winding temperature indicator is equipped with a current matching box and electrothermal component on the basis of oil temperature in- dicator, and the winding temperature is indicated by the temperature superposition. The proposed method is simple and appli- cable. The means for the calibration of winding temperature and its matching box are discussed, which is the guidance for the actual use of winding temperature indicator and controller.