Winding temperature measuring method of oil-immersed power transformer
A power transformer and winding temperature technology, applied in thermometers, measuring devices, measuring heat, etc., can solve problems such as incorrect winding temperature measurement, save economic costs and maintenance costs, avoid inaccurate measurements, and improve operation and maintenance levels Effect
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[0023] Such as figure 2 , follow the steps below to complete the winding temperature test:
[0024] Step 1: According to the rated capacity S of the transformer to be tested, the rated voltage U and the rated current ratio N of the current transformer, calculate the rated secondary current I of the transformer to be tested under the rated load p , Among them, the rated capacity S, the rated voltage U and the rated current ratio N of the current transformer are fixed parameters of the transformer to be tested, which can be obtained from the nameplate of the transformer.
[0025] Step 2: According to the copper oil temperature difference △T of the transformer to be tested under the rated load, query the thermal simulation characteristics-temperature rise and current correspondence table, and obtain the rated heating current I s ; Among them, the copper oil temperature difference △T is a fixed parameter of the transformer to be tested, which can be obtained from the nameplate...
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