Effect of vertical wind shear on flicker in wind farm

Scarcity of electric power, in developing countries like India, demands more generation of electric power. The conventional means of generating power are much time consuming and hence it is necessary to utilize renewable energy sources like wind, solar etc. Wind is intermittent in nature. It is not possible to predict exact wind speed because of the continuously changing climatic conditions. So flicker i.e. change in voltage is produced because of change in wind speed. It creates nuisance to the consumers. Consumers observe flicker in light of the incandescent lamp. So it is very difficult to read in that light source. So it is necessary to quantify and reduce the flicker emission severity produced by wind turbine. Now a days while computing flicker emission severity, only wind speed and grid impedance phase angle are considered. In this paper new parameter vertical wind shear is also considered while computing the flicker emission severity. Experimental results are of a turbine installed at Village Nimgaon Mhalungi, Tal. Shirur, District Pune, India.