In order to achieve the friendly access of wind power to the power grid and build the model of wind-hydrogen and combustion of hydrogen gas coupling system with hydrogen storage energy and the super capacitor charging as the base

in this paper

the capacity allocation method of the system is proposed.On the basis of analysis of power spectrum characteristic of wind power

it is decomposed into the low frequency networking component and high frequency component by the use of wavelet packet decomposition technique.The high frequency component is decomposed further into sub high frequency part and highest frequency part which are suppressed by electrolytic cell and super capacitor respectively.The expected capacity allocation is obtained by the probability density function of Fourier approximation fit fluctuation power.It is shown by the calculation analysis that the proposed method can achieve the friendly access of the wind power to the power grid.