Abstract
The widespread use of renewable energies around the world has generated the need for new tools and resources to allow them to be properly integrated into current power systems. Power system operators need new dynamic generic models of wind turbines and wind farms adaptable to any vendor topology and which permit transient stability analysis of their networks with the required accuracy. Under this framework, the International Electrotechnical Commission (IEC) and the Western Electricity Coordinating Council (WECC) have developed their own generic dynamic models of wind turbines for stability analysis. Although these entities work in conjunction, the focus of each is slightly different. The WECC models attempt to minimise the complexity and number of parameters needed, while the IEC approach aims to optimise comparison with real turbine measurements. This study presents a detailed comparison between these two different approaches for modeling a Type 3 (i.e., DFIG) wind turbine in MATLAB/Simulink. Finally, several simulations are conducted, with which the consequences of the different approaches are evaluated. The results of this paper are of interest to power system operators as well as wind turbine manufacturers who require further assistance in adapting their specific models to the simplified versions provided by the International Committees.
Highlights
The current needs of power systems around the world have resulted in the development of new tools and resources that permit the integration of the increasingly important renewable energy sources
The contributions of the present study focus on: (i) providing guidelines on the adjustment of a generic Type 3 wind turbine (WT) model based on the two international guidelines related to this topic (IEC 61400-27-1 Ed. 1 and Western Electricity Coordinating Council (WECC) second generation of WT models); (ii) conducting an in-depth analysis regarding the consequences of the different points of view of each entity; and (iii) testing the compatibility between the two implementation approaches
The Simulink implementation of the Type 3 current limitation system (CLS) from International Electrotechnical Commission (IEC) 61400-27-1 is shown in Fig. 5a, while the logic followed by the WECC guideline is depicted in the MATLAB code shown in
Summary
The current needs of power systems around the world have resulted in the development of new tools and resources that permit the integration of the increasingly important renewable energy sources. The contributions of the present study focus on: (i) providing guidelines on the adjustment of a generic Type 3 WT model based on the two international guidelines related to this topic (IEC 61400-27-1 Ed. 1 and WECC second generation of WT models); (ii) conducting an in-depth analysis regarding the consequences of the different points of view of each entity; and (iii) testing the compatibility between the two implementation approaches. This paper can be of particular interest for researchers working on the development of generic models, and for manufacturers intending to adjust their particular models to either of these two references, as well as for power system operators (TSOs and DSOs) These results support the IEC and WECC Committees, as a reference to check the compatibility between the models, as well as the advantages of each entity approach.
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