Abstract
The participation of wind power in the energy mix of current power systems is progressively increasing, with variable-speed wind turbines being the leading technology in recent years. In this line, dynamic models of wind turbines able to emulate their response against grid disturbances, such as voltage dips, are required. To address this issue, the International Electronic Commission (IEC) 61400-27-1, published in 2015, defined four generic models of wind turbines for transient stability analysis. To achieve a widespread use of these generic wind turbine models, validations with field data are required. This paper performs the validation of three generic IEC 61400-27-1 variable-speed wind turbine model topologies (type 3A, type 3B and type 4A). The validation is implemented by comparing simulation results with voltage dip measurements performed on six different commercial wind turbines based on field campaigns conducted by three wind turbine manufacturers. Both IEC validation approaches, the play-back and the full system simulation, were implemented. The results show that the generic full-scale converter topology is accurately adjusted to the different real wind turbines and, hence, manufacturers are encouraged to the develop generic IEC models.
Highlights
Wind energy emerged as the most promising renewable energy source (RES) in the world over the past few years
There is a lack of contributions with the involvement of several wind turbine (WT) manufacturers and this is the gap the present paper aims to fill
Validating a model consists of comparing the emulated response with the measured data from field tests, both referring to the same wind turbine terminals (WTT)
Summary
Wind energy emerged as the most promising renewable energy source (RES) in the world over the past few years. IEC 61400-27-1 defined four generic WT models to conduct dynamic simulations of power system disturbances such as short-circuits These generic models, known as standard or simplified models, involve several assumptions and have several key properties, as follows:. Wind speed is assumed to be constant over the simulation This assumption is acceptable because generic WT models use simulation time steps in the range of 1 ms and 10 ms and the total simulation time is between 10 s and 30 s [14], with both of these conditions being common features for transient stability analysis [15]. The validation methodology defined by the IEC 61400-27-1 was implemented to evaluate the accuracy of the generic WT models Following this introduction, the rest of the paper is structured as follows: Section 2 provides an overview of the current state of the art regarding variable-speed WTs, where the lack of field validation works is highlighted.
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