الفهرس 
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Abstract
The operation and structure of distribution system is changing with the integration
of distributed generation, based on alternative energy sources, including renewable
energy sources (wind, solar). Among the new issues, there is the question of
stability of distribution systems in the presence of Wind Turbine distributed
generation.
Egypt is endowed with an excellent wind energy potential, especially in the Red
Sea coast area where a capacity of20 GW could be achieved, as the annual average
wind speed is around 1 0 m/s.
The growth of wind energy penetration level in distribution system arise the
concern about its impact on the operation of the power system, especially voltage
stability and power loss. Among major concerns this research, studied the impact
of connecting wind Turbine (WT) in radial distribution system with different
penetration levels and different power factor (lead and lag) on power system
voltage stability, power loss reduction and optimal size and location to install WT
in distribution system to minimize active power loss. Load flow calculation curried
out using forward-backward sweep method. The analysis proceeds on a 9 and 33
bus radial distribution systems. Results show that voltage stability enhancement
and power loss reduction should be considered as WT installation objective.
Also in this study, the optimal placement and size for installing WT or CB in
distribution systems to minimize system active loss was studied. The optimization
technique was applied on 9 and 33 bus systems.
Results shows that installing WT is better than CB in losses minimization without
violate optimization constraints.