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Micro-grid control of PV-Wind-Diesel hybrid system with islanded and grid connected operations

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4 Author(s)
Arulampalam, A. ; Dept. of Electr. & Electron. Eng., Univ. of Peradeniya, Peradeniya, Sri Lanka ; Mithulananthan, N. ; Bansal, R.C. ; Saha, T.K.

This paper discusses modeling of a micro-grid with PV-Wind-Diesel generator hybrid system and its operations. The PV system is modeled with a DC/AC inverter with a pre-defined Maximum Power Point Tracking (MPPT) control. Fixed speed induction generator based wind turbines are used to model the wind farm. The diesel generator controls are modeled with droop governor and automatic voltage regulator (AVR). The PV inverter controls, including MPPT and voltage droop, are modeled in the DC/AC inverter itself. The proposed MPPT control is more stable with additional input of PV cell temperature. The complete system is modeled in PSCAD/EMTDC software. Performance of this system is studied on (i) fault tripping of the main grid and (ii) islanded operation of micro-grid with intermittent power from the wind and PV plants. The simulation results confirm the smooth operations of the proposed concept for disturbances from main grid as well as due to the intermittent wind and PV renewable power plants.

Published in:

Sustainable Energy Technologies (ICSET), 2010 IEEE International Conference on

Date of Conference:

6-9 Dec. 2010

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