How to measure how oil immersed transformer oil temperature?

The oil immersion transformer is a major industrial equipment in the power distribution system, and its operational reliability has an immeasurable relationship to a trusted supply and power system operation. According to the relevant material data analysis, the mean device fault ratio of the transformer above 110kV and above is about 0.69%, in which the transformer is operated by the winding, causing insulation aging, the windings are transmitted, and the transformer is destroying the safety production accident accounts for a large proportion. In fact, the rehabilitation transformer is maintained in the non-electricity maintenance problem in electricity maintenance, in fact, the indirectness of the temperature abnormal conditions of the oil immersion transformer.

Very easy to see, accurate measurement of the temperature of the transformer temperature for the safety production accidents of the transformer and its instantaneous situation have a critical practical significance.

Its use time is an important role in the temperature of the transformer, and the temperature of the electromagnetic coil has dominated the insulating material. In the 80 ~ 130 ° C, the insulation temperature of the transformer winding is over 6 ° C, and the insulating aging speed is doubled, that is, the insulating life is 1/2, which is the "six-degree law" of the insulated aging. 

In the operation of the oil immersion transformer, it is generally specified that 85 ° C is a high-level temperature boundary line, in the region of the Dongying City, when the high-level temperature is around 80 ° C, the "XX main temperature high alarm" will be transmitted.

The temperature in the oil immersion transformer, including transformer oil soft and transformer winding temperature. Generally, a temperature accurate measurement slot is installed at the top of the casing, inserting into the transformer oil, and the transformer temperature is measured in accordance with the temperature measurement component in this. Because the overall goal of accurate measurement is the oil of the transformer's high-rise residential, and everyone is generally referred to as a high-rise residential temperature of the transformer. Because the transformer can cause iron based on the load, the electromagnetic coil temperature of the transformer is highly transformer oil at the time of operation of the transformer. This is a high temperature of the transformer insulating the transformer, which is the temperature of real-time hotspots within the transformer, and everyone is called real-time hotspot temperature.

Generally, the real-time hotspot in the transformer is some locations close to the top of the transformer winding. Because it is not possible to position, we generally replace the real-time hotspot temperature of the transformer with the transformer winding temperature, as a method of detecting real-time hotspot temperatures in the transformer. Therefore, the oil transformer is generally equipped with a high-level residential temperature meter of a transformer and a winding thermometer of the transformer.