Proceedings ArticleDOI
Variable Frequency Transformers for Increased Wind Penetration
T. Geetha,V. Jayashankar +1 more
- pp 1-8
TLDR
In this article, the voltage impact of wind farms on weak grids is studied using a generic test system and the voltage at the point of interconnection (POI) of the wind farm to the grid is analyzed for different values of grid X/R ratios.Abstract:
The voltage impact of wind farms on weak grids is studied using a generic test system The size of the wind farm is taken as 20% of the grid short circuit MVA to characterize weak grids The voltage at the point of interconnection (POI) of the wind farm to the grid is analyzed for different values of grid X/R ratios It is shown that reduction of real power injection at POI brings the voltage at POI within permissible values for the entire range of X/R ratios A pumped storage unit or a variable frequency transformer as an asynchronous inter connector is suggested to realize this Complete modeling and simulation of the proposed network topologies are given The results are discussed with reference to the Indian power systemread more
Citations
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Journal ArticleDOI
A new synchronous generator based wind energy conversion system feeding an isolated load through variable frequency transformer
TL;DR: In this paper, the authors explored the possibility of synchronous generator based wind energy generation system feeding an isolated load using a latest power transmission technology i.e. variable frequency transformer (VFT).
Proceedings ArticleDOI
A novel method for grid integration of synchronous generator based wind energy generation system
TL;DR: The proposed method does not employ any power electronic based interface for grid integration of SG based WEGS and hence does not produce harmonics and the control of the proposed method is simple.
Proceedings ArticleDOI
Variable Frequency Transformer - State of the art review
TL;DR: The Variable Frequency Transformer (VFT) as mentioned in this paper is a controllable, bidirectional transmission device that can transfer power in between asynchronous power system networks, where the two separate electrical networks are connected to the stator winding and the rotor winding, respectively.
References
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Proceedings ArticleDOI
Excitation control system design of rotary type frequency converter for performance improvement of power system dynamics
TL;DR: A rotary type frequency converter using two sets of adjustable speed generators/motors is expected to be applied at the interconnections between 50 Hz and 60 Hz power systems in Japan as discussed by the authors, and since shaft torsional oscillation and slow response due to mechanical connection are inevitable and may lead to instability in power system, it also presents some countermeasures or control schemes to handle such inherent problems and to improve performance of power system dynamics.