Method for on-line assessment of insulation on-line monitoring system of substation

Method for on-line assessment of insulation on-line monitoring system of substation

The invention provides a method for on-line assessment of an insulation on-line monitoring system of a substation, which comprises the following steps: (1) carrying out frequency conversion on a power supply signal which is outputted by the on-line monitoring system and has the frequency of M Hz thr...

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Hauptverfasser: DENG ZEGUAN, DU ZHONGDONG, LIAO YUAN
Format: Patent
Sprache:chi ; eng
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MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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creator DENG ZEGUAN
DU ZHONGDONG
LIAO YUAN
description The invention provides a method for on-line assessment of an insulation on-line monitoring system of a substation, which comprises the following steps: (1) carrying out frequency conversion on a power supply signal which is outputted by the on-line monitoring system and has the frequency of M Hz through a frequency conversion circuit and producing a current signal with the frequency of N Hz, wherein N is not equal to M; (2) outputting the current signal with the frequency of N Hz to a plurality of series-connected loops consisting of current sensors and a reference current sensor of the on-line monitoring system in a through manner; and (3) comparing the phase of the current signal which is outputted by the current sensor and has the frequency of N Hz with the phase of the current signal which is outputted by the reference current sensor of the on-line monitoring system and has the frequency of N Hz in the same series-connected loop. The method for on-line assessment of the insulationon-line monitoring system
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subjects MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
title Method for on-line assessment of insulation on-line monitoring system of substation
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