Neural Network Based Adaptive Protection

This paper describes a new method of the application of ANN in the adaptive relay protection .It means that some problems existing in the power system, i.e faults analysis, direction distinction could be solved by using strong adaptive ability and studying ability of ANN. This protection includes two independent subnets to finish their functions in parallel way and has an advantage that the relay setting values are determined according to current operation condition of power system and fault type. It can keep the protection characteristics optimal. In order to deal with oscillation and fault resistance, the paper presents a new method of adaptive distance relay protection based the above relay protection. We made simulated calculation on high voltage transmission system and trained the nets finally, the result show that this method is absolute reliable using in the protection of power system.