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
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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