An alternative voltage and frequency monitoring scheme for SCADA based communication in power system using data compression

Conventionally in SCADA based system used in power system, voltage & frequency is monitored sequentially at regular intervals by employing suitable communication schemes. By suitable data compression techniques, it is possible to compress the measured voltage & frequency data to a reduced single string which is then transmitted to monitoring / control room. At the receiving end, the necessary data can be extracted from the transmitted string by using the respective decompression technique. A MATLAB based system is developed which can produce the compressed string corresponds to input voltage & frequency which can be decoded to obtain the voltage & frequency at the receiving end.