Simulation evaluation of an integrated boundary protection scheme

The paper presents extensive simulation studies with respect to a typical EHV transmission line systems, the proposed protection technique is able to give correct responses for various system and fault condition. Furthermore, the protection scheme offers not only fast protection for individual line section, but also integrated protection for all lines connected to the substation, therefore it could reduce the costs and complexity of power line protection systems. The continue advances in measurement, communication and signal processing technologies could present a bright future for the practical application of the proposed relay and its associated scheme.