An analysis of the characteristics of the simultaneous feed-in of photovoltaic and wind power plants based on measured power values

Abstract

This paper shows the results of the analysis of the measured power values of photovoltaic and wind power plants in the proximity of several electrical substations. The aim is to receive an impression of the frequency, time and duration of very low and very high simultaneous feed-ins of photovoltaic and wind power plants. Therefore, the data of nine electrical substations is analysed. Besides typical statistical values, a comprehensive analysis on the occurrence, extent, distribution, time and duration of the totalized photovoltaic and wind power feed-in is made. The results show that the occurrence of extreme totalized photovoltaic and wind power feed-in basically depends on the relation r of the installed nominal power of both plant types. For an optimal relation r, there are only a few or even almost no very high feed-ins and the number of very small feed-ins can be reduced by balancing the relation r to about 0.5.