In the past 10 years, very intensive integration of wind power plants (WPP) into power systems worldwide is evident. This phenomenon can have significant impacts on the normal operation of certain power systems. Especially exposed are power systems that do not possess a flexible generation portfolio, where the biggest challenge for power systems with significant amounts of installed capacity in WPP are variations of their output power which need to be balanced. In this paper, possible variations of output power from WPP based on real, measured wind speed data are analyzed. Recommendations for power systems that want to remain/become self-sustaining i.e. independently satisfy consumer needs and enable smooth functioning, in spite of significant amounts of installed capacity in WPP are given. In this sense, some of the characteristics of power systems in the Southeast Europe (SEE) region are presented. Most of these power systems are characterized by dominant electricity generation from "slow-response" generation facilities, such as thermal power plants (TPP) based on coal and nuclear power plants (NPP). On the basis of gained results, a more detailed elaboration of possibilities of integrating WPP into the power system of Bosnia and Herzegovina (B&H) are done in this paper.

This paper considers the problem of integrating distributed generators into the Bosnia and Herzegovina's (B&H) distribution system. B&H has a respectable hydro potential accommodation for small hydro power plants (HPP). Today, an imposing number of small hydro power plants (27 unitsl 36.5 MW) is connected to the B&H distribution grid and tenths are in the phase of construction (total power cca 300 MW). After receiving positive results from multi-year measurements of wind potential in some regions of B&H, it has become evident that B&H fulfills conditions for the development of wind power plants (WPP). There are some initiatives for constructing WPP on several locations in B&H with generator units between 300 kW and 2 MW. Their integration into the B&H powerless distribution grid presents an important technical problem. This paper is aimed to present some problems which have occured in the B&H distribution system with a large penetration of distribution generation.