Modeling and investigation of fault ride through capability of variable speed wind turbines

Download

index.pdf

Date

2010

Author

Koç, Erkan

Metadata

Show full item record

Item Usage Stats

283
views

114
downloads

Technological improvements on wind energy systems with governmental supports have increased the penetration level of wind power into the grid in recent years. The high level of penetration forces the wind turbines stay connected to the grid during the disturbances in order to enhance system stability. Moreover, power system operators must revise their grid codes in parallel with these developments. This work is devoted to the modeling of variable speed wind turbines and the investigation of fault ride trough capability of the wind turbines for grid integration studies. In the thesis, detailed models of different variable speed wind turbines will be presented. Requirements of grid codes for wind power integration will also be discussed regarding active power control, reactive power control and fault ride through (FRT) capability. Investigation of the wind turbine FRT capability is the main focus of this thesis. Methods to overcome this problem for different types of wind turbines will be also explained in detail. Models of grid-connected wind turbines with doubly-fed induction generator and permanent magnet synchronous generator are implemented in the dedicated power system analysis tool PSCAD/EMTDC. With these models and computer simulations, FRT capabilities ofvariable speed wind turbines have been studied and benchmarked and the influences on the grid during the faults are discussed.

Subject Keywords

Wind turbines.

URI

http://etd.lib.metu.edu.tr/upload/12612534/index.pdf
https://hdl.handle.net/11511/20166

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Değişken hızlı rüzgar türbinlerinin modellenmesi ve arıza sonrası sisteme katkı yeteneklerinin incelenmesi Koç, Erkan; Güven, Ali Nezih (IEEE; 2010-12-05) Son yıllarda rüzgâr enerjisi sistemlerindeki teknolojik gelişmeler ve sağlanan devlet destekleri, rüzgâr enerjisinin elektrik üretim profilindeki payını artırmaktadır. Bu artan pay sebebiyle iletim/dağıtım sistem operatörleri, şebeke yönetmeliklerini tekrar gözden geçirmek zorunda kalmışlardır. Ayrıca, sistemin kararlı iletimini sağlamak için, oluşan arızalarda rüzgâr türbinlerinin şebekeye bağlı kalması bir zorunluluk haline gelmiştir. Bu çalışma, rüzgâr türbinlerinin elektrik şebekesine entegrasyonu çalış...
Dynamic modeling, control and adaptive envelope protection system for horizontal axiswind turbines Şahin, Mustafa; Yavrucuk, İlkay; Department of Aerospace Engineering (2018) In this thesis study, a wind turbine envelope protection system is introduced to protect turbines throughout the below and above rated regions. The proposed protection system, which is based on a neural network, adapts to various turbines and operational conditions. It can keep the turbine within pre-defined envelope limits whenever a safe operation is about to be violated. The avoidance is realized by control limiting technique applied to the blade pitch controller output, thereby adjusting the blade pitch...
Numerical simulations of wind turbine wake interactions using actuator line and les models Önel, Hüseyin Can; Tuncer, İsmail Hakkı; Department of Aerospace Engineering (2019) Wind is one of the most promising renewable energy resources of the future. After years of optimization studies, Horizontal Axis Wind Turbines shine out as the most efficient type and have been the only model used in large scale commercial wind farms. Layout planning plays an important role in getting the most power out of a wind farm as much as turbine blade design. Most important parameter in this planning phase is the inevitable wake generated by rotors and its impact on other wind turbines which results...
Hybrid excited synchronous generator design and comparison of direct drive wind turbines Akgemci, Aysel; Keysan, Ozan; Department of Electrical and Electronics Engineering (2019) Various types of electrical generators are used in wind turbines and there is not an agreement on the best generator type. Although, high speed Doubly Fed Induction Generators (DFIGs) are still the most common generator topology utilized in wind turbine systems, there is a trends toward direct-drive Permanent Magnet Synchronous Generators (PMSGs), as they are more efficient and reliable. However, permanent magnets (PMs) induce uncontrollable voltage due to the fixed flux resulting from PM excitation. Conven...
Investigations of upscaling effects for aerodynamic design of large wind turbine rotors by using BEM theory and optimization Kesikbaş, Ozan.; Sezer Uzol, Nilay; Department of Aerospace Engineering (2019) In recent years, wind power has become one of the most preferred and accepted renewable energy sources. However, there are still design challenges of new wind turbines especially upscaling problems as the size of rotor blades gets larger and larger. The main objective of this research is to understand scaling effects on wind turbine design by investigating and developing new design and scaling methodologies. For the design studies, the 5 MW NREL wind turbine is used as the baseline rotor. For the upscaling ...

Citation Formats

E. Koç, “Modeling and investigation of fault ride through capability of variable speed wind turbines,” M.S. - Master of Science, Middle East Technical University, 2010.