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Power Transformer Active Noise Reduction System and Working Method

A technology of power transformers and noise reduction systems, applied in the direction of transformer/inductor noise damping, etc., can solve the problems of transformers polluting the environment, endangering human health, affecting the normal operation of equipment, etc., achieving good active noise reduction and improving accuracy Effect

Active Publication Date: 2017-01-18
STATE GRID SHANDONG ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The noise of transformers not only pollutes the environment, endangers human health, affects the normal operation of equipment, but is also closely related to the area occupied by substations.

Method used

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  • Power Transformer Active Noise Reduction System and Working Method
  • Power Transformer Active Noise Reduction System and Working Method
  • Power Transformer Active Noise Reduction System and Working Method

Examples

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0027] Such as figure 1 As shown, the power transformer active noise reduction system includes: a microphone, the microphone is connected to a pre-power amplifier, and the pre-power amplifier is connected to the acquisition channel of the data acquisition card, and the data acquisition card A / D is sent to the control unit after conversion, and the output end of the control unit is connected to the rear power amplifier through the output channel of the data acquisition card, and the output end of the rear power amplifier is connected to the sound box; the control unit is connected to the display screen;

[0028] The control unit includes a data acquisition module, the input port of the data acquisition module is connected to the data acquisition card, the output end of the data acquisition module is connected to a data storage module, a data analysis module a...

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Abstract

The present invention discloses an active noise control system and working method of a power transformer, which comprises: a microphone connected to a preposed power amplifier, the preposed power amplifier connected to an acquisition channel of a data acquisition card, the acquisition channel of the data acquisition card connected to a control unit, a postposed power amplifier connected to the control unit through the output channel of the data acquisition card, a speaker connected to the postposed power amplifier. The control unit includes a data acquisition module, a data storage module, a data analysis module and an adaptive algorithm module, and the adaptive algorithm module is connected to a signal output module. The output end of the data analysis module is connected to a display screen. The primary noise is collected through reference signal microphone, the signal is sent to the control unit through power amplification and conversion, the analysis and storage of the noise signal are completed by the control unit, and a control signal is generated, and the secondary noise is issued by the speaker under the driven of the control signal after the control signal is amplified, which achieve active noise control.

Description

technical field [0001] The invention relates to the technical field of transformer noise processing, in particular to an active noise reduction system and working method for a power transformer. Background technique [0002] Transformer noise is the sum of irregular, intermittent, continuous or random mechanical noise and air noise generated by the transformer body and cooling system during the body structure design, type selection layout, installation, and use. The noise generated by transformers widely affects residential areas, commercial centers, light stations, airports, factories and mines, enterprises, hospitals, schools and other places. With the improvement of people's environmental awareness and the restrictions on various types of noise by the environmental protection department, especially due to the continuous expansion of cities and the needs of urban power grid transformation, some substations are sometimes built in commercial and residential areas, so the tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/33
Inventor 裴秀高王晓军梁园斌倪广魁许丹李岩赵信华刘宾张泽卉韩涛李鹏赵全富马帅
Owner STATE GRID SHANDONG ELECTRIC POWER
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