Research And Improvement Of Adaptive Filtering Algorithm For Power Transformer Active Noise Control System

With the current rapid economic development,electricity consumption in all cities continues to increase.Accordingly,the noise problem generated by power transformers is becoming more and more important.As one of the main causes of urban noise pollution,the noise generated by power transformers may be very dangerous to the physical and mental health of the urban population.Therefore,how to improve the impact of transformer noise on people becomes particularly important.The creation of a green and ecological natural environment has become one of the main concerns of current society.According to the different sources of noise,it is mainly divided into active noise control and passive noise control.Generally speaking,active noise control technology has high reliability,and has many advantages such as strong practicability and small size.As for active noise control and passive noise control,passive noise control is mainly aimed at mid-to-high frequency noise,and active noise control is mainly aimed at lower frequency noise.In general,with the continuous development of science and technology,the current noise control processing technology is widely used in a variety of engineering projects,and has achieved certain practical effects.To this end,this article mainly launched a series of discussions on active noise control technology,mainly from the following aspects to carry out detailed research and analysis.First,analyze the relevant basic theories of power transformers,mainly focusing on the generation of power transformers,affecting power transformers and their propagation methods,etc.Through analyzing the relevant data of the noise spectrum,the research found the noise characteristics and main noise of power transformers.The basic frequency distribution characteristics;second,the main performance characteristics of the adaptive algorithm.Through analysis,this paper further proposes a variable block adaptive filtering algorithm,which mainly controls the length of the new block by accumulating error terms and error limits,and then achieves the control of active noise;third,in order to further verify and improve the adaptive The actual control ability of the algorithm.This paper establishes an active noise generation simulation system in the simulation field.Through the simulation experiment,the adaptive algorithm is further compared with the classic algorithm,and the model system is established by combining the adaptive algorithm and the engineering control machine..Analyze the noise level before and after the noise reduction of the transformer active noise management system model.After establishing an appropriate fault limit,according to the interference of different environmental noises,the transformer’s anti-interference ability against noise is further improved.