“Good people all, of every sort, give ear unto my song ”, this was the cry made by thousands of operator running to and fro to detect, analyze and report the fault to their senior officials and wait for their instructions to be followed. Finally someone heard their cry and a master system was born. The energy is generated, transmitted, distributed and finally utilized. At every stage certain supervision, control and protection is neces sary. This paper deals with basic SCADA system, its components, basic block diagram, functions, applications and advantages of SCADA.
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