Prediction method and system for acoustic noise probability of DC power transmission line

Abstract

The invention provides a prediction method and system for the acoustic noise probability of a DC power transmission line. The method comprises that S1) multiple groups of training data are used to train an artificial neural network model, and in the training process, line parameters are taken as input data, and acoustic noise measuring values are taken as output data; S2) the line parameters in the multiple groups of training data are input to the trained artificial neural network model again to obtain multiple groups of acoustic noise predicting values correspondingly; S3) according to the groups of acoustic noise measuring values and the groups of acoustic noise predicting values, groups of corresponding error values of the artificial neural network model are calculated; S4) the groups of acoustic noise predicting values are divided into multiple intervals, and probability distribution of the groups of error values in the intervals is determined; and S5) the artificial neural network model is used to predict data to be measured, and an acoustic noise probability predicting result is obtained according to a prediction result and the error-value probability distribution of the interval to which the prediction result belongs.

Description

technical field [0001] The invention belongs to the field of electrical engineering, and specifically designs a method and system for predicting the probability of audible noise of a direct current transmission line. Background technique [0002] In recent years, the electromagnetic environment of high-voltage transmission lines has attracted more and more public attention. The electromagnetic environment problems of transmission lines are mainly caused by corona discharge of high-voltage transmission lines. Corona discharge is a form of discharge that occurs in an extremely uneven field. The curvature radius of transmission lines is small. Burrs and defects lead to high unevenness of the electric field near the surface of the high-voltage transmission line conductor, and corona discharge will occur when the conductor voltage reaches a certain level. During the process of corona discharge, electromagnetic environmental problems such as radio interference and audible noise w...

AI Technical Summary

Problems solved by technology

Many research institutions at home and abroad have fitted their own empirical formulas based on the measurement results of the audible noise of transmission lines, but these fitting formulas are all obtained under their own specific circumstances, and their scope of application is very limited

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