Research On Power Flow Analysis Of Distribution Network Containing Wind Power

There has been a global awareness of environmental problem which coupled with the rising prices of fossil fuel and increasing energy needs so nowadays there is a significant increase of penetration of distributed generation to distribution system. This penetration pro vides various benefits to the owner, utility and the final user. Penetration of Distributed generation into an existing distribution system has many impacts on the system. We decided to analyze the effect of penetration of distributed generation in radial distribution system.Only wind power will be used like Distributed Generation source.During the planning and designing stage of power distribution networks development, a large number of load flow calculations have to be made. With the integration of distributed generation, the once passive distribution networks are rapidly changing to active networks. As a consequence, the planners have to take into consideration the bidirectional power flow in distribution networks. Also, the existing power flow algorithms for unidirectional radial distribution feeders need to adapt to new circumstances. In so doing, the influence on voltage profile and technical power losses is analysed in cases with and without the connection of Distributed Generation. This thesis presents a method for power flow analysis (Backward-forward and Newton-Raphson) and then an analysis of the change law of system voltage and active power losses when DGs are connected to the distribution network. Different cases have been studied. Location and capacity of the DG sources are changed to study the effect that these changes may have on distribution system. The steady state voltage in distribution systems without and with the presence of wind power is evaluated for various possible capacities and position of the DG. Based on the Backward-Forward sweep method, the voltage distribution and active power losses before and after accessing to radiating distribution network is calculated. In this approach, MATLAB is employed and many simulations are carried out on the IEEE 33 bus system.