Method and device for testing audible noise source of single-phase power transmission line

Method and device for testing audible noise source of single-phase power transmission line

The invention provides a single-phase power transmission line audible noise source test method and device, and the method comprises the steps: obtaining the audible noise time domain characteristics of a to-be-tested three-phase power transmission line, and recognizing the audible noise time domain...

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Hauptverfasser: LIANG ZHAOJIE, TIAN JIE
Format: Patent
Sprache:chi ; eng
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MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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creator LIANG ZHAOJIE
TIAN JIE
description The invention provides a single-phase power transmission line audible noise source test method and device, and the method comprises the steps: obtaining the audible noise time domain characteristics of a to-be-tested three-phase power transmission line, and recognizing the audible noise time domain characteristics corresponding to each phase line; respectively inputting the audible noise time domain characteristics of the three-phase power transmission line into a preset source test model to obtain corresponding noise source information on each phase line; and positioning the noise source position on the phase line according to the noise source information on the phase line corresponding to each phase line. According to the method, the characteristics that three-phase line sound sources are similar in amplitude in waveform and only have time delay are utilized, noise of adjacent lines is eliminated, so that noise of the single-phase wire is obtained, and accurate measurement of audible noise of the single wir
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subjects MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
title Method and device for testing audible noise source of single-phase power transmission line
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