Automatic energy-saving control device and method for axial flow fan of main transformer station

Abstract

The invention discloses an automatic energy-saving control device and an automatic energy-saving control method for an axial flow fan of a main transformer station. The device comprises an axial flow fan running circuit, a manual control circuit, a temperature sensor for sensing ambient temperature, a temperature controller, a temperature control relay, a microcomputer time control switch, a time control relay and a switching switch, wherein the temperature controller receives temperature outputted by the temperature sensor and is connected with a coil of the temperature control relay; the microcomputer time control switch outputs a signal to a coil of the time control relay; and a contact of the temperature control relay, a contact of the time control relay and the manual control circuit are connected in parallel between the switching switch and the axial flow fan running circuit. The method comprises the following steps of: setting, detecting, judging and executing. The automatic energy-saving control device is stable in running state and reliable in operation, saves a large amount of electric energy for the transformer station, reduces the noise of the transformer station, and has the excellent economic and social benefit.

Description

technical field [0001] The invention relates to a main variable axial flow fan, in particular to an automatic energy-saving control device and method for a main variable axial flow fan. Background technique [0002] In the existing technology, substations often experience severe weather such as high temperature and lightning, and the operation status is unstable. The temperature of the main transformer is generally affected by the ambient temperature and the power load. As the temperature changes, the axial flow fan of the main transformer The inability to start or stop automatically leads to a large power loss of the main transformer. On the other hand, the operating noise of the main transformer is about 50 decibels when the axial flow fan is not turned on, and the noise increases to 60 decibels when the axial flow fan is turned on. About decibels will have a greater impact on the surrounding environment and affect the living environment of residents. [0003] At present,...

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, substations often experience severe weather such as high temperature and lightning, and the operation status is unstable. The temperature of the main transformer is generally affected by the ambient temperature and the power load. As the temperature changes, the axial flow fan of the main transformer The inability to start or stop automatically leads to a large power loss of the main transformer. On the other hand, the operating noise of the main transformer is about 50 decibels when the axial flow fan is not turned on, and the noise increases to 60 decibels when the axial flow fan is turned on. It will have a great impact on the surrounding environment and affect the living environment of residents.

[0003] At present, the control of the axial flow fan is mainly manual control, so the running time of the axial flow fan of the main transformer cannot be changed with the change of the ambient temperature, which leads to a large power loss of the main transformer, and it is easy to operate at night. Disadvantages affecting the living environment of residents

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