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[1, 2015] 

Journal of Electrical Engineering, Vol 66, 1 (2015) 3-10 DOI: 10.1515/jee-2015-0001

ANALYSIS AND SYNTHESIS OF MODEL REFERENCE CONTROLLER FOR VARIABLE SPEED WIND GENERATORS INERTIAL SUPPORT

Elvisa Bećirović – Jakub Osmić – Mirza Kušljugić – Nedjeljko Perić

   Model Reference Controller (MRC) for contribution of Variable Speed Wind Generators (VSWG) in inertial response of Electrical Power System (EPS) is presented and analyzed in this paper. MRC is synthesized based on a model of Generating Unit With non-Reheat Steam Turbine (GUNRST) thus enabling VSWG to emulate GUNRST response during the initial stage of dynamic frequency response ie inertial phase. Very important property of conventional steam generating units is that its contribution to inertial phase response is independent from the initial generating power. By using MRC in VSWG it is accomplished that in most common wind speed region (3-12 m/s) VSWG inertial support is almost independent from wind speed. Since in most EPSs VSWG replaces conventional steam generators, application of MRC algorithm provides that the characteristics of EPS in terms of inertial response are preserved, regardless of the growing trend of introducing VSWG. Evaluation analysis of the proposed MRC is performed on modified nine bus power system when VSWG with MRC is connected to one of the power system buses.

Keywords: wind generator, inertial support, model reference controller


[full-paper]


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