Intelligent cooling method for transformer substation main transformer ultrasonic waves

Abstract

The invention relates to an intelligent cooling method for transformer substation main transformer ultrasonic waves. The intelligent cooling method comprises the following steps: carrying out programming by a control module; after the operation of a main transformer, turning on an intelligent cooling device for transformer substation main transformer ultrasonic waves; when a temperature detector detects that the oil temperature of transformer oil is increased to a high temperature threshold value, controlling to turn on an ultrasonic generator automatically by the control module, and transmitting ultrasonic waves to carry out ultrasonic oscillation on transformer oil inside the main transformer by a surround ultrasonic transmitting probe; when the oil temperature of the transformer oil isincreased continuously, increasing the power of the ultrasonic waves generated by the ultrasonic generator, and vice versa; when the oil temperature of the transformer oil is decreased to a set value,automatically turning off the ultrasonic generator; monitoring an electric field disturbance condition generated by the transformer oil inside the main transformer by the surround electric field monitoring probe of an electric field monitor, and when electric field disturbance reaches a set value, automatically controlling and reducing the power of ultrasonic waves generated by the ultrasonic generator by the control module. According to the intelligent cooling method, the heat exchange and heat dissipation cooling capacity can be strengthened efficiently.

Description

technical field [0001] The invention relates to an ultrasonic intelligent cooling method for a substation main transformer. Background technique [0002] During the operation of the main transformer in the substation, the winding and iron core will generate a lot of heat due to the electromagnetic effect, which needs to be dissipated and cooled by the transformer oil. There are two main ways for the main transformer to circulate and cool the oil flow. One is to install a circulating submersible pump for intensive Oil circulation cooling, the second is cooling by natural temperature difference. The first method requires an external high-speed mechanically rotating power oil pump, and if there is a tiny crack leaking in the negative pressure area of ​​the oil pump, cavitation will occur, and the humid air from the outside will be sucked into the main transformer, endangering the safe operation of the main transformer. Secondly, the oil pump will run at high speed for a long ti...

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Problems solved by technology

The first method requires an external high-speed mechanically rotating power oil pump, and if there is a tiny crack leaking in the negative pressure area of ​​the oil pump, cavitation will occur, and the humid air from the outside will be sucked into the main transformer, endangering the safe operation of the main transformer. Secondly, the oil pump will run at high speed for a long time Heat is generated, especially when the oil pump has a heating fault, it will cause the transformer oil flowing through the oil pump to be heated and cracked, which also endangers the safe operation of the main transformer, and at the same time causes misjudgment of the transformer oil chromatography monitoring test, and the oil pump is easily damaged due to long-term mechanical wear, etc.

The second way is the natural cooling of heat exchange by continuously reducing the temperature difference gradient, which requires a large increase in the amount of oil used and the heat dissipation area of ​​the main transformer to meet the satisfaction. Equipment investment cost and floor area

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