METHOD FOR GROUND RESISTANCE MEASUREMENT OF TRANSMISSION TOWER EQUIPPED WITH OVERHEAD GROUNDWIRES

PURPOSE: A power transmission tower ground resistance measurement method is provided accurately calculate a electric potential drop curve when a ground wire is separated from a power transmission tower by analyzing an electric potential drop curve measurement result and an ground classification coef...

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Bibliographic Details
Main Authors CHOI, IN HYUK, KANG, YEON WOOG, LEE, WON KYO, CHOI, JONG KEE
Format Patent
LanguageEnglish
Korean
Published 08.04.2010
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:PURPOSE: A power transmission tower ground resistance measurement method is provided accurately calculate a electric potential drop curve when a ground wire is separated from a power transmission tower by analyzing an electric potential drop curve measurement result and an ground classification coefficient measurement value. CONSTITUTION: A ground current(Iground) is measured at after applying a test current(Itest) to a tower post of a power transmission tower. A ground classification coefficient of the ground current about the test current is calculated. An apparent resistance calculation value is calculated by using the ground classification coefficient, a ground to voltage at a metering point, and voltage of the ground electrode(E). A calculated curve corresponding to the apparent resistance calculation value is calculated. A calibration curve corresponding to the apparent resistance measurement value is calculated.
Bibliography:Application Number: KR20080096006