A transformer temperature control method and transformer

Abstract

The invention discloses a transformer temperature control method, which includes: detecting the temperature of the top oil in the oil tank through a first temperature sensor in the transformer oil tank; calculating the heat dissipation Q per unit time of the contact part between the bottom surface of the transformer and the support part; Whether the absolute value of the surface temperature difference is greater than the temperature difference threshold; collect the three-phase pile head temperature of the transformer for m times; obtain the oil surface temperature for n times; determine the heating capacity of the transformer; measure the current equipment temperature of the oil pump of the transformer cooler group in operation ;Obtain the calibration temperature of the oil level temperature calibration sensor; judge whether the difference between the calibration temperature and the current equipment temperature of the cooler group oil pump exceeds the standard; calculate the transformer winding temperature and transformer life; send the transformer predicted life value to the cloud server; The predicted life value of the transformer is classified into the life cycle, and the latest obtained life cycle classification is recorded in the cloud server storage.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a transformer temperature control method and a transformer. Background technique [0002] The power transformer is an important electrical equipment in the power system, and its operation status affects the overall safety and reliability of the power system. Transformer insulation aging due to over-temperature operation of windings accounts for a large proportion of transformer failures in power systems. Therefore, the measurement of transformer oil temperature is extremely important for preventing transformer failures. At present, the measurement of power transformer oil temperature mainly depends on the transformer thermometer and its supporting related devices. In the long-term operation and use process, the accuracy of the thermometer will decrease with the use time, resulting in errors or even errors in the detection results, thus losing effective monitoring of the transformer t...

AI Technical Summary

Problems solved by technology

The controller is generally composed of a controller, a matching device, and a secondary instrument. The cost is relatively high, but the actual application is less, and it is generally not connected to the non-electric control circuit, and because the mechanical part is easy to rust, the potentiometer in the controller is easily damaged. , the meter structure is complex, expensive, and difficult to repair, which seriously affects the local meter indication and the temperature display of the monitoring system

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