Power transformer noise control method based on inverse control technology

Abstract

The invention provides a power transformer noise control method based on an inverse control technology. The power transformer noise control method based on the inverse control technology comprises the steps that noise signals generated by a noise source of a power transformer are collected through a primary sensor and are regarded as reference signals of a control system; error signals generated through the superposition of noise reduction signals and the noise signals are collected through an error sensor; the control system establishes a secondary sound channel model for a secondary sound channel through an adaptive modeler according to the error signals, simulates the process that the noise reduction signals generated by a secondary noise reduction source are transmitted in space and obtains sound signals of a simulation secondary sound source; the control system carries out inverse modeling on the secondary sound channel through the adaptive modeler according to the error signals, and the secondary sound channel is connected with the secondary sound channel model in series in the control system; the sound signals equal to the reference signals in amplitude are obtained through calculation, and inverting processing is carried out on the sound signals to obtain control signals controlling the secondary noise reduction source; the noise reduction signals are output according to the control signals. The power transformer noise control method based on the inverse control technology can effectively control low-frequency noise of power transformers.

Description

technical field [0001] The invention relates to the field of noise suppression of power transformers, in particular to a power transformer noise control method based on inverse control technology. Background technique [0002] In recent years, due to the continuous growth of urban electricity consumption, higher and higher electricity load density, and the continuous expansion of urban scale, more and more power transformers (especially substations and substations) have penetrated into the load (city) center , and built in commercial areas and residential areas, so the noise of power transformers is a problem that has to be considered. Among the many power transformers, the noise problem of power transformers is the most prominent. The noise of power transformers (including power transformers) not only pollutes the environment and endangers human health, but with the improvement of public environmental awareness and the restrictions on various noises by environmental protect...

AI Technical Summary

Problems solved by technology

Among them, the feedback structure control system is not widely used in actual engineering because of its complex control system structure, high requirements on control parameters and poor system stability. Correspondingly, the development of control systems based on this structure is not mature.

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