Power Quality Analysis of Wind generation System in Distributed Network

The energy demand of developing countries like India is increasing day by day, in order to fulfil the energy demand fossil fuels are used more. The result of more usage of fossil fuels is global warming and climatic changes. So the world leaders came together for the Conference of Parties 21, i.e. Paris Climate Change Agreement. India has ratified the agreement and has set a target to install 175 GW of renewable energy plants by 2022. Which target from the wind generation system is 60GW and for MP target is 6.2 GW. An end user needs an electrical supply having good power quality, which means voltage and frequencies near to rated value. And as wind speed is fluctuating in nature the output power of the wind generator terminals is not constant. This fluctuation leads to various power quality issues like voltage sag, voltage swell and harmonics in the system. To address these issues, a machine that can run at variable speeds and provide almost constant power is needed. The machine that meets these conditions is the permanent magnet synchronous generator. The distributed generation system, with its unique feature of providing power to the local utility and the grid simultaneously, is a promising solution to these power quality issues. To feed the power to grid system interfaces with the semiconductor devices, and combination of semiconductor devices and nonlinear load are the main reasons to produce the harmonics. In this thesis, analysis carried out on the IEEE 9 bus system consists of 3 generators and integration of wind generation is done based on the voltage regulation calculated on all buses and maximum voltage regulation bus provides the location to integrate the wind energy generation system and after integration, it is found that the voltage regulation improves on that bus and it impacts partially on others buses even. Before connecting the wind generation system to bus6 maximum voltage regulation is found at bus6 but after connecting the wind generation system voltage regulation at bus5 is higher.