Method for realizing active noise reduction of ventilation system of transformer substation
Through the variable-step LMS adaptive noise cancellation model, the noise cancellation system is adjusted using an adaptive filtering algorithm, which solves the noise pollution problem of ventilation system of urban substations, and achieves effective noise reduction and stable system operation.
CN120452407APending Publication Date: 2025-08-08JIYUAN CITY FENGYUAN POWER TECH LTD
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Patent Information
- Application Number
- CN202510336841.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2025-08-08
AI Technical Summary
Technical Problem
The noise pollution of the ventilation system of urban substations is severe, affecting residents' lives, and the existing technology is difficult to effectively reduce fan noise.
Method used
Adaptive noise cancellation model based on variable step length LMS is adopted, and the structure and output of the noise cancellation system are adjusted through an adaptive filtering algorithm to emit anti-noise sound waves and noise source sound waves interfere with the noise source sound waves to cancel noise.
Benefits of technology
Effectively reduce the noise of substation fans, improve the level of noise pollution control, and provide technical support for the safe and stable operation of substations.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a method for realizing active noise reduction of a transformer substation ventilation system. Firstly, noise of a transformer substation ventilation system is collected; then establishing a basic LMS adaptive noise cancellation model; and finally, establishing an adaptive noise cancellation model based on the variable step size LMS. Based on the principle of sound wave interference counteracting, the active noise reduction system utilizes a self-adaptive filtering algorithm to change the structure and output of the system according to noise and emit anti-noise sound waves, so that the anti-noise sound waves and noise source sound waves are subjected to interference counteracting in the space, the problem of fan noise of the transformer substation is effectively solved, the noise pollution treatment level of the transformer substation is improved, and the service life of the transformer substation is prolonged. Technical support is provided for safe and stable operation of the transformer substation, and effective control measures are provided for noise of a built urban transformer substation ventilation system.
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