Transformer cooler control device based on various temperature monitoring of transformer

Abstract

A transformer cooler control device based on various temperature monitoring of a transformer comprises a temperature acquisition module, a control module, an audible and visual alarm module, a transformer cooling fan, a wireless transmission module and a relay module. The audible and visual alarm module, the temperature acquisition module, the receiving end of the wireless transmission module and the relay module are connected with the control module, and the temperature acquisition module is connected with the sending end of the wireless transmission module; and the temperature acquisition module acquires temperature signals and transmits the temperature signals to a transmitting end of the wireless transmission module, the temperature signals received by the wireless transmission module are transmitted to the control module, and the control module outputs the signals to the audible and visual alarm module and the relay module so as to control a transformer cooling fan. The on-off number and time of the cooling fans of the transformer cooler are reasonably distributed, the temperature of each key point of the transformer is effectively monitored, the overheating risk of the transformer is visually alarmed, and the situation that a large number of cooling fans are still put into operation when the internal temperature of the transformer is low is effectively avoided.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a transformer cooling control device. Background technique [0002] At present, intelligent monitoring devices for the control of transformer coolers are still relatively rare. Some researches have been carried out on the strategy of transformer cooling control in China. Judging and controlling whether to turn on the cooler or not. The core of transformer cooler control devices is mostly based on PLC control. From the perspective of engineering applications for transformers, the number of transformers that have been put into operation in China is large, and the transformer structures and types are diverse. Due to the hardware system of each PLC manufacturer Incompatible with each other, the use of PLC has the disadvantages of high cost and weak versatility. The function of the transformer cooler control device is relatively simple. Only the top oil temperature of the transformer is...

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Problems solved by technology

[0002] At present, intelligent monitoring devices for the control of transformer coolers are still relatively rare. Some researches have been carried out on the strategy of transformer cooling control in China. Judging and controlling whether to turn on the cooler or not. The core of transformer cooler control devices is mostly based on PLC control. From the perspective of engineering applications for transformers, the number of transformers that have been put into operation in China is large, and the transformer structures and types are diverse. Due to the hardware system of each PLC manufacturer Incompatible with each other, the use of PLC has the disadvantages of high cost and weak versatility

The function of the transformer cooler control device is relatively simple. Only the top oil temperature of the transformer is used to judge whether to turn on the cooler. The information obtained by the transformer cooler control device is relatively simple. The transformer cooler control device does not have an overheating alarm function for the transformer. Switching off the cooler does not warn the transformer of the risk of overheating on the spot, and reminds the transformer inspection personnel to eliminate the hidden danger of transformer overheating in a timely manner. It does not take into account the temperature of the inlet and outlet connectors of the high and low voltage sides of the transformer, and the hot spot temperature of the internal winding of the transformer, which also determine the thermal stability and safety of the transformer. important indicators of

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