Injection of the wind power into an electric grid

affects the power quality. The performance of the wind turbine

and thereby power quality are determined on the basis of measurements

and the norms followed according to the guideline

specified in International Electro-technical Commission standard,

IEC-61400. The influence of the wind turbine in the grid

system concerning the power quality measurements are-the active

power, reactive power, variation of voltage, flicker, harmonics,

and electrical behavior of switching operation and these are

measured according to national/international guidelines.