Fault indicators in transmission and distribution systems

Conference Paper · February 2000with211 Reads
DOI: 10.1109/DRPT.2000.855670 · Source: IEEE Xplore
Conference: Electric Utility Deregulation and Restructuring and Power Technologies, 2000. Proceedings. DRPT 2000. International Conference on


    Fault location techniques can be classified under three
    categories: (1) those based on fundamental frequency currents and
    voltages; (2) those based on travelling wave and high frequency
    components; and (3) those based on knowledge-based approaches. Fault
    indicators can be installed either in substation or on pole/tower along
    the transmission line. This paper reviews the fault indicator
    applications both in transmission and distribution systems. Principles,
    merits and demerits of each fault location technique are discussed.
    Finally, this paper suggests an advanced fault indicator based on fault
    generated high frequency noise signal (FI-HF), which is mounted between
    earth wire and tower. Fault generated high frequency noise signal is
    captured by a special designed “earth trap” and stack tuner