Modélisation dynamique des systèmes électriques insulaires incluant des énergies renouvelables : hydraulique et éolienne

Dynamic modelling of autonomous power systems including renewable power sources

Ecole des Mines de Paris, Centre d'Energétique

Abstract

The use of renewable energies for electricity production presents a growing interest, especially in autonomous power systems where the cost of conventional production is high. In recent years, the integration of wind energy is seen as an attractive alternative for fuel displacement. However, the intermittent nature of wind production imposes several difficulties to the power system operation when penetration is high. Here, a model is developed for the transient stability analysis of isolated power systems including various conventional (thermal, gas, diesel) and renewable (hydro, wind) power units. The objective is to assess the impact of a high integration from the renewables and to focus on the interaction between the hydro units - that have a special dynamic behaviour -, and the wind turbines. Detailed models for each one of the power system components are developed. Emphasis is given in the representation of different hydro power plant structures. Finally, the case-study of the power system of New Caledonia is examined, where various types of hydro plants and a wind farm are installed. The developed model permits to define the penetration limits of the renewable sources, to assess the system stability and finally it contributes in the dimensioning of new power plant installations.