Conference Paper

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

Dept. of Electr. Eng., Myongji Univ., Yongin
DOI: 10.1109/ISAP.1996.501070 Conference: Intelligent Systems Applications to Power Systems, 1996. Proceedings, ISAP '96., International Conference on
Source: IEEE Xplore

ABSTRACT 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

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