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Self-adapting air cooling controller of transformer

An adaptive and controller technology, applied in the direction of transformer/inductor cooling, pump control, non-variable pumps, etc., can solve the problems of waste of resources, uncontrolled fans, and failure to achieve targeted targets, etc., to save resources, Accelerate heat dissipation and improve cooling effect

Inactive Publication Date: 2014-12-24
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide an adaptive transformer air-cooling controller, which aims to solve the problem that the traditional air-cooling method does not control the fan, can not be targeted, and wastes resources in a certain sense.

Method used

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  • Self-adapting air cooling controller of transformer
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  • Self-adapting air cooling controller of transformer

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specific Embodiment

[0021] The negative temperature coefficient thermistor R of the embodiment of the present invention r with two fixed value resistors R 1 Form the first inverting proportional operational amplifier with the operational amplifier; two fixed-value resistors R 1 The second inverse proportional operational amplifier constituted with the operational amplifier; the external power supply of the controller is standard power frequency voltage, and the fixed value resistance R 1 Just choose an ordinary resistor, and determine its size is about 100kΩ according to the resistance value of the selected thermistor; the specific connection method is: the external power supply of the controller is connected to the input terminal of the first inverting proportional operational amplifier, and the first inverting proportional operational amplifier The output terminal is connected in series with the input terminal of the second inverting proportional operational amplifier, and the output terminal ...

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Abstract

The invention discloses a self-adapting air cooling controller of a transformer. An external power supply of the controller is connected with a negative temperature coefficient thermistor; the negative temperature coefficient thermistor is connected with a first operational amplifier; the first operational amplifier is connected with a second operational amplifier. The negative temperature coefficient thermistor and the operational amplifiers are utilized to constitute a self-adapting controller, so that the rotation speed of a transformer fan is controlled, and when the temperature raises, the rotation speed is increased, so that heat dissipation is quickened; when the temperature decreases, the rotation speed is correspondingly reduced, so that the cooling mode of the transformer is optimized; and furthermore, resources are saved, the service lives of the transformer and the fan are prolonged. The self-adapting air cooling controller is only applicable to an air-cooled transformer and can be used for controlling the heat dissipation speed of the air-cooled transformer.

Description

technical field [0001] The invention belongs to the technical field of air-cooled transformers, in particular to an adaptive air-cooled controller for transformers. Background technique [0002] In the high temperature season in summer, due to the increase in residential electricity consumption and industrial electricity consumption, the load rate of transformers often increases, and even heavy loads and overloads often occur. If the transformer is overloaded or overloaded, the most direct harm will cause the temperature of the transformer to rise, which will seriously affect the service life of the transformer. Commonly used cooling methods for transformers include oil-immersed self-cooling, oil-immersed air cooling, and forced oil circulation (air cooling and water cooling). The principle of air cooling is that the radiator has a fan, and the oil flows naturally in the radiator. The heat is taken away, and the cooling is accelerated. The traditional air-cooling method do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00H01F27/08
Inventor 范瑞卿
Owner STATE GRID CORP OF CHINA
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