High speed offset free distance relaying algorithm using multilayer feedforward neural networks

Conference Paper · January 1996with1 Read
DOI: 10.1109/ISAP.1996.501070 · Source: IEEE Xplore
Conference: Intelligent Systems Applications to Power Systems, 1996. Proceedings, ISAP '96., International Conference on


    A new high-speed digital distance relaying algorithm using
    artificial neural networks is presented. The proposed artificial neural
    network models are trained with the input patterns of distorted voltage
    and current signals passed a lowpass filter and with the target patterns
    of real and imaginary components of DC-offset free current and voltage
    signals conditioned by a DC-offset removing algorithm. The artificial
    neural networks play the roles of a DC-offset removing filter and a
    Fourier filter. In accordance with a series of tests, the relay
    operating time is less than 9 ms after faults in a 80 km, 154 kV, 60 Hz
    overhead transmission line system