Methodologies for Storage Size Determination for the Integration of Wind Power

Issues of wind power integration have received much attention lately, not only among professionals but also among civilians. During this period, the biggest obstacles to the integration have been widely identified. The present paper examines two of the issues: the ramping events and the scheduling errors of wind power plants. As a possible way of easing these problems, the authors propose the use of energy storage . In this paper, two different complementary methods are presented, which can be used to determine the parameters (rated power and energy) of a grid-connected energy storage unit that is capable of providing auxiliary (gradient) control reserves required by wind power plants, assuming that the power system is partially or wholly not capable of such operation. The methods are demonstrated using the openly available data of the Hungarian power system.