Improvement of Voltage Profile in A Radial Distribution System with Variable Speed Wind Turbines

This paper presents the Power generation with renewable energy sources is essential in now a days to control the atmospheric pollution and global warming. But interconnection of these sources to the power system brings problem of voltage fluctuation and harmonic distortion. The wind energy conversion system is designed and it is synchronized with a 14-Bus radial distribution system through the diode rectifier and inverter (IGBT). The control of firing pulses to the inverter is done by PI controller. The wind energy conversion system is to maintain the good voltage profile in radial distribution system and its effectiveness is observed. For analyzing the performance of the wind energy conversion system, case study on a 14-Bus radial distribution is considered. This case study shows that the voltage fluctuation and harmonic distortion can be minimized with proposed power electronic and control system interface and results were simulated in the MATLAB-SIMULINK Version 7.6. It has been found that the voltage profile in the system is improved and the harmonic distortion is reduced to acceptable levels.