Transformer air cooling system control device and control method

Abstract

The invention discloses a transformer air-cooling system control device, and the device comprises a signal collection module which is used for collecting the temperature information of a transformer; a PLC which is used for receiving the information acquired by the signal acquisition module and generating a control signal; a frequency converter which is used for receiving the control signal output by the PLC and controlling the fan unit; and a power supply module which is used for supplying power to the signal acquisition module, the PLC and the frequency converter. The output end of the signal acquisition module is connected with the PLC through the analog-to-digital converter, the output end of the PLC is connected with the frequency converter, the output end of the frequency converter is connected with the thermal relay set, and the output end of the thermal relay set is connected with the fan set; and the output end of the power supply module is connected with the signal acquisition module, the PLC and the frequency converter. The invention further provides a control method of the transformer air cooling system. By acquiring the temperature and the load of the transformer, the motor is smoothly adjusted, the response time is prolonged, and delay is reduced.

Description

technical field [0001] The invention relates to the technical field of substations, in particular to a control device and a control method for a transformer air cooling system. Background technique [0002] A substation is a place in a power system where voltage is transformed, received and distributed. As the heart and center of the substation, the power transformer is an irreplaceable key equipment in the power system. The power generated by the power plant must be boosted by a transformer before it can be transported. Since the high voltage cannot be used directly after being sent to the power-consuming area, a transformer is used to convert the high voltage into a low voltage. The reliability of power transformer operation is directly related to the safe, efficient and economical operation of the power grid, and is also an important guarantee for building a green and smart power grid. [0003] At present, most of the transformers are damaged due to the loss of proper i...

AI Technical Summary

Problems solved by technology

Once the air cooling system fails, the safety, stability and safe operation of the main transformer will be affected, and even threaten the safe and stable operation of the power grid

[0004] The air-cooled system controller used in the substation of the existing power supply company, due to the problem of the motor control method, the adjustment of the motor speed is not smooth enough with the temperature change, the adjustment is stepped and the response is sluggish, and the number of motor switching is too many, so that This leads to frequent motor defects in the air-cooled system, failures in the cooling system of the air-cooled transformer, and serious safety hazards

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