Storage system management for power conditioning in wind parks

Abstract

The stochastic nature of wind resources limits the maximum wind power that can be connected to existing electrical grids due to due to a variety of techno-economic reasons. In this paper concepts of dynamic power conditioning in wind parks are presented, which envisage support and management of the electrical grid through compensation of active and reactive power. A dynamic energy storage system is implemented, that acts as an intermediate wind energy buffer, compensating for short-term fluctuations of the energy source and variations in the load. As a result the power delivered from the wind park to the grid can be smoothed and the grid impact is minimized. Different power management methods are investigated and compared in the time and frequency domain. The required storage capacity and power rating depend on the storage management method chosen.