Plc based SCADA system automation for micro type hydroelectric power plants and implements of frequency and voltage regulation with RTU/PLC.

In this study, a prototype of micro hydroelectric power plant which can operate off-grid mode andits automation have been designed and applied for turning national hydro potential to good account. For this purpose, PLC (Programmable logic controller) has been used. Voltage and frequency values have been analyzed under both active and reactive load conditions using PID control. The whole control and commands are obtained by using SCADA (Supervisory Control and Data Acquisition)programming via PC. In our prototype, a pelton turbine with an asynchronous generator which can provide 500W electrical power, portable 300 lt horizontal water tank, a 1,5 KW centrifugal pump to achieve enough flow rateand head differential and an inverter which controls the pump speed have been used.