Evaluation of Induced Voltages & Currents on Indian D-Type 400kV OHL System

    Research output: Book/ReportCommissioned report

    Abstract

    This report presents the main results from the evaluation of the voltages and currents that could be induced during live-line replacement of a shield wire without the use of rope but by stringing directly the earth wire, instead. The induced voltages and currents on the shield wire are the results of capacitive-coupling (CC) and inductive-coupling (IC) between the shield wires and the phase wires of an OHL system. Thus, the tower geometry and phase configuration are very important in order to identify the induced voltages on shield wire during installation. Furthermore, the resistive-coupling (RC) mechanism between the fitting point of the existing shield wire to the tower and ground (at base of the tower) affects the induced currents and voltages on the shield wires. Consequently, this conductive path as well as the conductive path between the existing shield wire and the one under installation affects the induced voltages and currents developed on the new shield wire. This report addresses all these factors and identifies their effect on the induced voltage and current values that the new shield wire may experience during installation.
    Original languageEnglish
    PublisherNo publisher name
    Publication statusPublished - Apr 2013

    Publication series

    NameBalfour Beatty Report for Live-Line Installation of Shield Wire

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