Abstract
Abstract Connecting a transformer directly to the high voltage transmission line is a practical and relatively inexpensive way of providing service. The use of many circuit breakers is usually not justified, particularly at higher voltages. Motor operated air break switches (MOABs) instead of circuit breakers are used. To cope with the difficulty of switching arrangements, detection and clearing of transformer faults excluding the ground switch for MOABs operation, local area supervisory protection (LASP) system is proposed. LASP System collects current and voltage data from different locations on the power system through integrated equipment (IE) to relay equipment (RE). Asynchronous transfer mode (ATM) is a connection-oriented, packet-switched networking model between the LASP system and the equipment. Some attention is given to the architecture of a solution and some guidelines as to how this structure might be built to match with the next generation substation network architecture are also provided. The environment opens up new vistas for protection applications in the power systems.
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