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Control Strategy for Critical Loads in Micro grid Using Renewable Energy Sources

Lavanya S, Sathishkumar R

ABSTRACT— When hybrid power generation system integrated to power system it produces major stability and control problems. The influence of the hybrid system in the grid system concerning the power quality measurements are the active power, reactive power, voltage deviation, flicker, harmonics, and electrical behavior of switching operation and these are measured according to International Electro-Technical Commission (IEC). The STATCOM provides reactive power support to hybrid system and load. The Battery Energy Storage System (BESS) is generally required to compensate the fluctuation generated by hybrid system. The proposed Inverter control scheme to mitigate the power quality issues for power quality improvement in the grid connected hybrid power generation system is simulated using MATLAB/ SIMULINK in power system block set. The control scheme has a capability to cancel out the harmonic parts of the load current and maintains the source voltage and current in-phase. The performance of the system using PI and FUZZY controller has been studied comparatively.