Quality and Stability Assessments of Power System Connected with Considerable Penetration of Wind Energy in Distribution Network

Abstract

Renewable Energy resources are growing exponentially, demanding for more studies in the field of integration. Behavior of the grid depends upon the type of intermittent energy resources being added and the load distribution along the system. As most of these integration activities take place on the distribution side of power network, it is desired to conduct a comprehensive analysis at the low voltage level. Power system stability may be manifested as that property of a power system that enables it to remain in a state of operating equilibrium under normal operating conditions and to regain an acceptable state of equilibrium after being subjected to a disturbance. The distribution system consists of a direct drive variable speed wind turbine. This project presents control methods to improve power system stability direct drive variable speed wind turbine connected to distribution system. Induction generator absorbs reactive power from the power system, which affects the active and reactive power resulting a bus voltage instability and low power factor. FACTs devices are used to improve power system stability and to enhance the sys- tem performance during loss of generation, voltage sag, voltage swell, load changes and faults. The IEEE 34 node radial distribution test feeder used as main system and simulation perform in software and results are carried out.