Effects of Wind Turbine Generated Power Fluctuations to Thermal Power Generation - Part II

Today, all over the world the number of installed wind turbines is increasing continuously. This causes more and more problems concerning the integration of the fluctuating wind power production into the existing electrical supply systems. To handle these problems the main aim for the future must be to guarantee the security of supply and the quality of electrical energy by taking the maximum advantage of the available wind potentials.In this part of the paper, a method based on thermodynamical modelling is described to evaluate the limits and options of dynamic operation mode of coal-fired power plants.The thermodynamic model is presented briefly followed by a validation of the model. In order to interpret actual loads i.e. of the thick-walled components of the steam generator two strategies of fatigue estimation based on guidelines of the Deutsche Dampfkessel Ausschuss (DDA) and the Forschungskuratium Maschinenbau (FKM) are proposed.