GPRS-based (general packet radio service) transformer oil temperature monitoring system

Abstract

The invention discloses a GPRS-based (general packet radio service) transformer oil temperature monitoring system which comprises a temperature sensor, a signal processing module, a microprocessor module, a drive module, a cooling mechanism, a protocol conversion module, a background monitoring terminal and a GPRS communication module. The microprocessor module is wirelessly communicated with the protocol conversion module through the GPRS communication module. The protocol conversion module is connected with the background monitoring terminal. The GPRS communication module replaces an original RS485 communication cable to be wirelessly communicated with the background monitoring terminal, so that electromagnetic interference in space can be reduced, the background monitoring terminal is guaranteed to be as high as a field liquid crystal display module in temperature, people controlling the background monitoring terminal can accurately master the current oil temperature of an oil immersed transformer to lower the temperature timely, normal operation and longer service life of the transformer can be guaranteed, and the troubles of wiring are avoided. The system is convenient to install and has promising application prospect.

Description

technical field [0001] The invention relates to a GPRS-based transformer oil temperature monitoring system, which belongs to the technical field of transformers. Background technique [0002] In recent years, with the acceleration of power plant automation and information construction, the transformer is an indispensable and important part in the entire power system. When the oil-immersed transformer is working, when the temperature rises, the internal insulating oil Volume expansion, the tension formed by the expansion of the insulating oil is digested through the corrugated sheets outside the corrugated oil tank of the oil-immersed transformer. There are clear requirements for the oil temperature in the oil-immersed transformer in the industry standard: the maximum safe temperature of the upper oil in the oil tank does not exceed 100 ℃, That is, when the oil temperature exceeds 100 °C, the cooling mechanism of the transformer must be turned on to cool down, or the load lim...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the low accuracy of the oil temperature meter for measuring oil temperature in the prior art, because there is strong electromagnetic interference in the space of the transformer, which will affect the RS485 communication line, the temperature of the background monitoring terminal and the field There is a deviation in the temperature displayed by the oil thermometer, which affects the judgment of the background monitoring terminal control personnel, and cannot cool down in time, resulting in the abnormal operation of the transformer and shortening its service life.

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