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The Use of Multiband PSS to Improve Transient Stability of Multimachine Power System Nacim Cherif; Allaoui Tayeb; Benasla Mokhtar
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 3, No 3: September 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

With the increase in demand for electrical energy, electrical networks must constantly work near their stability limits faster and more flexible. These grids are often subject to disturbances such as short circuits which cause the loss of stability of generators and the entire network. In this work we present two different approaches to PSS (power system stabilizer), the conventional PSS and multiband PSS in order to improve transient stability of multimachine network. The latter is subjected to a short-circuit current with a duration of 200ms just 350 km from the first generator. Multiband PSS offers an additional advantage since it produces a signal stabilizing not only from the variation of the angular velocity of the rotor as well as electrical power. Instead of one, it uses three filters (Lead/Lag) independent, each optimized for vibration damping local oscillations between interconnected networks and global oscillations. Different simulations were performed using the software matlab sympower system.DOI: http://dx.doi.org/10.11591/ijpeds.v3i3.3905
Adaptive Fuzzy Logic Control of Wind Turbine Emulator Bouzid Mohamed Amine; Zine Souhila; Allaoui Tayeb; Massoum Ahmed
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 4, No 2: June 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

In this paper, a Wind Turbine Emulator (WTE) based on a separately excited direct current (DC) motor is studied. The wind turbine was emulated by controlling the torque of the DC motor. The WTE is used as a prime mover for Permanent Magnet Synchronous Machine (PMSM). In order to extract maximum power from the wind, PI and Fuzzy controllers were tested. Simulation results are given to show performance of proposed fuzzy control system in maximum power points tracking in a wind energy conversion system under various wind conditions. The strategy control was implemented in simulation using MATLAB/Simulink.DOI: http://dx.doi.org/10.11591/ijpeds.v4i2.5809