Voltage Fluctuation And Flickering Examination Of Wind Turbine

With the development of new technology, The sudden increase of loads, especially the incessant increase of nonlinear, impulsive and fluctuating loads, power quality problems often occur, such as harmonic, voltage fluctuation and flicker, unsymmetrical voltage, and so on.The wind electrical machinery driving force originates from the class after the anemometer wind energy, because the wind speed and wind direction are stochastic, and the generation of wind turbines is proportional to the cube of wind speed and depends on wind turbine characteristics, of course, it is unstable. This fluctuant power will affect the power quality of the imbedded grid, such as voltage fluctuation and flicker.Along with wind electric field scale enlargement, the power quality problems which the wind electric field turning on system causes will certainly to be more and more serious, the power quality problems will become the restriction wind electric field installed capacity in certain situations in the primary factor, this will also urge the wind electrical machinery of power quality test and the authentication work becomes one of the wind electrical machinery admittance system essential contents.This article through the voltage fluctuation and flicker which produces to the single wind turbine carries on the analysis, the computation, has carried on the simulation using Matlab to the voltage undulation examination effect; Then separately from takes the different interpolation, different minute sum of series and different sampling frequency these aspects embarks, to the Pst value which calculates has carried on the comparison. Finally obtains it to the electrical network the influence, and puts forward the improvement proposal, thus raises the noble character electric field in the electrical network power quality.