Autors: Totev, V. V., Ibram, D. Y., Rizov, P. M., Gueorgiev, V. T.
Title: A Study on the Operation of Own Needs' Equipment under Fault Conditions
Keywords: double-phase; earth fault; open circuit; open phase; single-

Abstract: A study on the operating regimes of own needs' power equipment under fault conditions has been performed. The purpose of the study is to investigate the operation of own needs' power equipment on medium voltage 6 kV (motors and transformers) under fault conditions. The following fault conditions are studied-single-phase open circuit, double-phase open circuit and single-phase open circuit with earth fault. Based on obtained results only own needs' transformers (6/0.4 kV) operate with asymmetrical currents which values do not exceed their respective protection thresholds. With regards to own needs' motors there is always at least one current value that exceeds set protection threshold.

References

    Issue

    8th Junior Conference on Lighting, Lighting 2023, pp. 1-6, 2023, Bulgaria, ISBN ISBN 979-835032829-5

    Вид: пленарен доклад в международен форум, публикация в реферирано издание, индексирана в Scopus