Partial discharge is a symptom of the insulation condition of covered conductor lines and is effective for their predictive maintenance. Accordingly, there is increasing interest in identifying the traveling direction of partial discharge pulses in covered conductor lines in an effort to assist the location of the partial discharge source. In this article, a simple, convenient, and inexpensive sensor is designed to identify the traveling direction of partial discharge pulses. This improved sensor mainly consists of a pulse current transducer (an air-cored Rogowski coil) and a voltage coupler (two copper foil electrodes). The feasibility of this sensor is proven by software simulation and finally confirmed by both a pulse injection experiment and a high-voltage partial discharge test on a 10-kV cross linked polyethylene (XLPE) covered conductor.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    An Improved Directional Sensor for On-line Partial Discharge Measurement in Overhead Covered Conductors




    Publication date :

    2016




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    53.33 / 53.33 Elektrische Maschinen und Antriebe




    OVERHEAD LINE MEASUREMENT APPARATUS AND OVERHEAD LINE MEASUREMENT METHOD

    NEGISHI HIDEO | European Patent Office | 2019

    Free access

    Overhead conductors for electric railways

    Schiemann, Max | Engineering Index Backfile | 1899


    Safety of overhead electrical conductors

    Engineering Index Backfile | 1889