Automatic generation control of a renewable energy integrated power system in the presence of fractional order 3DOF controller
Narendra Kumar Jena, Subhadra Sahoo, Prakash Chandra Sahu, Binod Kumar Sahu, Kanungo Barada Mohanty
Abstract
The prime aim of this paper is to address automatic generation control of a bulky, and intricate power system containing boiler dynamics, generation rate constraints, and governor dead band non-linearities. Along this, the instability caused by inertia less photovoltaic (PV) source is brought into the discourse. To bring the deviations of frequency, and tie-line power inside a particular limit, a reliable, proficient, and expert controller is essential. To have this, higher degrees-of-freedom (DOF) structure is conglomerated with proportional-integral-derivative (PID) controller coordinated by fractional-order (FO) operator to develop 2/3DOF-FOPID controller. Further, these controllers are upgraded to 2/3 DOF-FOPIDN controller by adjoining derivative filter (N). The PID, 2DOF-FOPIDN, and 3DOF-FOPIDN controllers are designed by SOS algorithm. The performance shows that the higher DOF based controllers outweigh the 1DOF-PID controller, and simultaneously, the 3DOF-FOPIDN controller works fabulously over 2DOF-FOPIDN controller. Close by this assessments, the potential, and reliability of 3DOF-FOPIDN controller has been inspected by injecting variable load/PV generation.