ADIBI - Amirkabir University, Tehran, IRAN
RIAHY - Amirkabir University, Tehran, IRAN
AGHAJANI - Amirkabir University, Tehran, IRAN
RAHBAR - Tavanir, Tehran, IRAN

The complete hardware design of a total transmission line protection of high voltage power system is a vital issue because of possessing the following features: - High speed and high precision response to the fault occurrance due to the use of Linear Prediction Method. - Multi-functional protection relays (Distance protection, Power swing blocking, etc.) residing all in a single hardware package (Integrated Relays). - Flexibility and extendablity of system solely by the aid of software. The intergrated protection system has been successfully developed, built and tested.