Automatic dust removing device for cooler for forced oil circulation power transformer and dust removing method thereof

Abstract

The invention provides an automatic dust removing device for a cooler for a forced oil circulation power transformer and a dust removing method of the automatic dust removing device for the cooler for the forced oil circulation power transformer and belongs to the field of automatic dust removing equipment for coolers for forced oil circulation power transformers. The automatic dust removing device for the cooler for the forced oil circulation power transformer comprises the forced oil circulation power transformer and the cooler for the forced oil circulation power transformer and is provided with a controller, a phase changing device, a voltage transformer and a current transformer. The signal output end of the controller is connected to the signal input end of the phase changing device, the three-phase input end of the phase changing device is connected to the low-voltage wire outlet end of the forced oil circulation power transformer through the voltage transformer and the current transformer respectively, the cooler for the forced oil circulation power transformer is provided with a fan driven by a motor, and the three-phase output end of the phase changing device is connected to the power source input end of the motor. Dust and sundries on a fin tube of the cooler for the forced oil circulation power transformer can be effectively cleaned, the heat dissipation efficiency of the cooler for the forced oil circulation power transformer is improved, the maintenance workload is relieved, the operation temperature of the power transformer is reduced, and the expected service life of the power transformer is achieved.

Description

technical field [0001] The invention provides an automatic dedusting device for a cooler for a strong oil circulation power transformer and a dust removal method thereof, belonging to the field of automatic dedusting equipment for a cooler for a strong oil circulation power transformer. Background technique [0002] At present, in the substation of the power system, due to the current flow of each coil conductor and the existence of the electromagnetic field, the strong oil circulation power transformer in operation will generate power loss, mainly load loss, no-load loss and additional loss. Although the power transformer The operating efficiency is very high, but due to the large converted power, the loss is very objective. Large-scale power transformers can often reach tens to hundreds of kilowatts. These losses will be converted into powerful heat energy and spread outward. The forms of conduction, convection and radiation are transmitted in the iron core, coil, metal cl...

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Problems solved by technology

[0003] At present, the defects of this technology are as follows: First, large-scale power transformers and their coolers are mostly installed outdoors, and dust and sundries in the air are easily attached to the finned tubes, even large attachments, such as plastic films, newspaper sheets, etc. Foreign matter causes partial blockage, which seriously affects its heat dissipation efficiency, resulting in an abnormal rise in the temperature of the transformer body; second, with the increasing number of attachments, the heat dissipation efficiency of the cooler for strong oil circulation power transformers continues to decrease, and the temperature of strong oil circulation power transformers rises. High, affecting service life

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