Compatibility of wind and solar power generation in reducing effects of power output intermittency - case study

Abstract

The issue of backup for intermittent renewable sources comes with the relatively low capacity value and the very limited contribution to generation security that such sources have. However, beside standard compensation measures (power system flexibility, positive and negative reserve, etc.), inherent natural properties of wind and solar power resources can play a certain role as well. This work builds upon previous analyses and gives a quantitative system non-specific data assessment of individual power generation scenarios (dispersed power generation, hybrid solar-wind power generation, etc.), based on one year data records available for three sites of Bosnia-Herzegovina. The scope of this work is to statistically evaluate and compare the contribution of each case scenario to the required power system backup margin and the associated capacity value for the selected resource. It has thereby been found that for the given data dispersed wind generation exceeds the effects of a hybrid wind-solar scenario, however, positive effects were found to come with a mixed dispersed wind-solar power generation as well. The capacity value assessment resulted in improved properties of the output reliability, but only up to a limited capacity factor of the wind only scenario.