Study of multiprocessor-based parallel architecture for transmission line protection

As quality, speed and performance demands are exacting on protective equipment, a perfected design and vigorous testing of the relay equipment are necessary to establish their suitability of functioning for the purpose they are for. The interest of the work is to verify the designed relay performance under, as far as possible, a real situation with signals from instrument transformer type transducers. MC683000 microprocessor based compact relay software is developed to run the relay system in a master slave structure which is capable of handling all types of faults. A laboratory model transmission line (analog) with electromechanical relays as back-up protection system, has been used for testing of the relay. Current and potential transformers are used to acquire relay input signals. The actual input signals of the model transmission line are sampled and filtered. The performance of the relay is verified for various kinds of faults