Large Scale Test Bench for Emulating Grid Connected Wind Turbines of Different Sizes

摘要

A state-funded research project, GrinSH, launched at Flensburg University of Applied Sciences, aims to set up a test facility to enable the exploration of new gas engines and of wind turbines (WTs) connected to the electrical grid. The intention of the project is to build a test bench, with which grid connected WTs of different sizes can be emulated. The proposed test bench offers unique framework conditions for innovative research in the areas mentioned above, by using a gas fired engine that is independent of the grid. Since the WTs to be emulated are very different in size and design, the question of the reproducibility of the key parameters of the WTs by means of the intended test bench must be examined. To investigate into the feasibility of this intended goal, three WTs of different size and design are examined in this paper. The main key parameters, in the context of the project's aim, are the angular generator speed and power of WTs. The second type of key parameters examined in this work is characterized by their time-dependence namely the power gradients and eigenfrequencies of WTs.