Abstract:

This paper illustrates the impact of distributed generation on the range of protection, sensitivity and reclosing, an adaptive instantaneous trip protection based on fault component combined with BP artificial neural network was proposed. This scheme uses the fault current sequence component to identify the fault type and BP artificial neural network to find the indirect changes of equivalent impedance system , achieving the adaptive current fast-tripping protection function .At last, simulation results on a 10 kV distribution system have verified the validity of the scheme proposed.

Key words: Distributed generation, Distributed networks, Fault component, Artifical neural network, Adaptive current protection