Application of Distributed Static Compensators in Wind Farms to Meet Grid Codes

2012 ◽  
Author(s):  
Xiaokang Xu ◽  
Michael J. S. Edmonds ◽  
Martin Bishop ◽  
Jim Sember
Keyword(s):  
Wind Farms ◽  
Grid Codes

scholarly journals Wind Farms and Grid Codes

10.5772/14873 ◽  
2011 ◽  
Author(s):  
Mara Paz ◽  
Miguel Garca-Gracia ◽  
Susana Martn ◽  
Miguel ngel Martnez Guill
Keyword(s):  
Wind Farms ◽  
Grid Codes

scholarly journals Fault ride through capability of double fed induction generator for wind energy system

2021 ◽  
Author(s):  
Hussien Berisso
Keyword(s):  
Power System ◽  
Wind Turbines ◽  
Mechanical Energy ◽  
Wind Farms ◽  
Normal Operation ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Fault Ride Through ◽  
Grid Codes ◽  
Doubly Fed

Until recently it has been accepted that induction generator based wind turbines are disconnected from the power system in the event of a network disturbance. However, the increasing trend of connecting high penetrations of wind farms to transmission networks has resulted in the transmission system operators revising their grid codes for the connection of large MW capacity wind farms. The new grid codes require wind turbines to remain connected for a specified voltage disturbance on the network. Most of the wind generation plant being developed will use either fixed speed induction generator (FSIG) or doubly fed induction generator (DFIG) based wind turbines. The basics of using a doubly-fed induction generator (DFIG) to convert the mechanical energy of the wind into useful electrical power that can be used to supply electricity to any grid are presented. The ability of doubly fed induction generator based wind turbines to remain connected through power system disturbances is discussed. A crowbar protection system to provide a power system fault ride-through capability for doubly fed induction generator based wind turbines is also described. The dynamic behaviour ofDFIG wind turbines normal operation and during grid faults are simulated and assessed to verify the recommended method using a Matlab/Simulink developed model.

scholarly journals Field-test of wind turbine by voltage source converter

2019 ◽  
Vol 4 (3) ◽  
pp. 465-477 ◽  
Author(s):  
Nicolás Espinoza ◽  
Ola Carlson
Keyword(s):  
Wind Turbine ◽  
Wind Farms ◽  
Design Criterion ◽  
Test Equipment ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
State Tests ◽  
Technical Requirements ◽  
Grid Codes ◽  
Wind Energy Development

Abstract. One of the main challenges for wind energy development is making wind turbines efficient in terms of costs whilst maintaining safe and reliable operation. An important design criterion is to fulfil the grid codes given by the transmission system operators. Grid codes state how wind farms must perform when connected to the grid under normal and abnormal conditions. In this regard, it is well-known that not all technical requirements can be tested by using actual impedance-based test equipment. Therefore, test equipment comprising a fully rated voltage source converter in back-to-back configuration is proposed. Thanks to the full controllability of the applied voltage in terms of magnitude, phase and frequency, the use of voltage-source-converter-based test equipment provides more flexibility compared to actual test systems. As demonstrated in this paper, the investigated test device not only can recreate any type of fault, including its recovery ramp, but also can carry out steady-state tests, such as frequency variations and frequency scan, on the test object. Finally, test results from a 4.1 MW wind turbine and 8 MW test equipment located in Gothenburg, Sweden, are shown to validate the investigated grid code test methodology.

scholarly journals Synchronization and Coordinated Fuzzy Current Control Scheme of PMSG Based WECS in the Presence Of Severe Grid Fault

2019 ◽  
Vol 8 (3) ◽  
pp. 158-163
Keyword(s):  
Wind Farm ◽  
Fuzzy Logic Controller ◽  
Wind Farms ◽  
Current Control ◽  
Control Methods ◽  
Stability Criteria ◽  
Static Synchronous Compensator ◽  
Control Scheme ◽  
Reactive Current ◽  
Grid Codes

When ever extreme grid collapse occurs, the wind farm should remain on-grid and the desired reactive current must be injected in to the grid, which is generally required by the grid codes. Static synchronous compensator (STATCOM) is used in order to inject certain reactive current, it is normally used in wind farms in the present scenario. Generally, some of the vector control methods like phase locked loop (PLL)-oriented are used to control the wind farm and STATCOM to supply reactive currents. Even due to severe grid fault there is a chance of occurring loss of synchronization (LOS) due to imbalance of real power between supply of power and utilization. The dynamic mechanism of synchronization and wind farm stability criteria and proposes coordinated fuzzy current control scheme for the WECS and STATCOM under grid fault. PI controller is replaced with Fuzzy logic controller in this proposed method. The proposed control scheme is verified and carried out simulations in MATLAB/SIMULINK.

scholarly journals Fault ride through capability of double fed induction generator for wind energy system

2021 ◽  
Author(s):  
Hussien Berisso
Keyword(s):  
Power System ◽  
Wind Turbines ◽  
Mechanical Energy ◽  
Wind Farms ◽  
Normal Operation ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Fault Ride Through ◽  
Grid Codes ◽  
Doubly Fed

Until recently it has been accepted that induction generator based wind turbines are disconnected from the power system in the event of a network disturbance. However, the increasing trend of connecting high penetrations of wind farms to transmission networks has resulted in the transmission system operators revising their grid codes for the connection of large MW capacity wind farms. The new grid codes require wind turbines to remain connected for a specified voltage disturbance on the network. Most of the wind generation plant being developed will use either fixed speed induction generator (FSIG) or doubly fed induction generator (DFIG) based wind turbines. The basics of using a doubly-fed induction generator (DFIG) to convert the mechanical energy of the wind into useful electrical power that can be used to supply electricity to any grid are presented. The ability of doubly fed induction generator based wind turbines to remain connected through power system disturbances is discussed. A crowbar protection system to provide a power system fault ride-through capability for doubly fed induction generator based wind turbines is also described. The dynamic behaviour ofDFIG wind turbines normal operation and during grid faults are simulated and assessed to verify the recommended method using a Matlab/Simulink developed model.

scholarly journals Wind Power Integration and Its Impact on Power Quality - A Didactic Approach

2020 ◽  
Vol 39 (2) ◽  
pp. 246-260
Author(s):  
Santos Kihwele
Keyword(s):  
Power Systems ◽  
Power System ◽  
Wind Power ◽  
Power Quality ◽  
Wind Farm ◽  
Wind Farms ◽  
Transient State ◽  
Inrush Current ◽  
Induction Generators ◽  
Grid Codes

This paper presents a model of a wind power system integrated with realistic power system, with intention of using it in addressing power quality issues in relations to grid codes during steady-state operation transient-state operation i.e., presence of grid fault events. For that case, a didactic approach of the normal performance of power systems due to the connection of fixed-speed wind turbine with induction generators is used. A study of integrating wind farms will be presented, including the incidence of high inrush current due to switching capacitor banks, out-rush current and voltage sags due to nearby three phase faults. As mandatory for the grid codes regulation, the incidence on the power quality at the point of common coupling is analyzed too. As a result of the contingency study, it will be shown that capacitors bank and fault current limiter can help the wind farm to ride-through a fault.

Characterization of Measured Voltage Dips in Wind Farms in the Light of the New Grid Codes

2007 ◽  
Author(s):  
Emilio Gomez-Lazaro ◽  
Miguel Canas ◽  
Juan Alvaro Fuentes ◽  
Angel Molina-Garcia
Keyword(s):  
Wind Farms ◽  
Measured Voltage ◽  
Voltage Dips ◽  
Grid Codes

Selection of a leading edge noise prediction method for PNoise

2018 ◽  
pp. 214-223
Author(s):  
AM Faria ◽  
MM Pimenta ◽  
JY Saab Jr. ◽  
S Rodriguez
Keyword(s):  
Wind Turbine ◽  
Turbine Blades ◽  
Prediction Method ◽  
Leading Edge ◽  
Wind Farms ◽  
Broadband Noise ◽  
Turbulence Energy ◽  
Noise Prediction ◽  
Migration Routes ◽  
Turbulent Inflow

Wind energy expansion is worldwide followed by various limitations, i.e. land availability, the NIMBY (not in my backyard) attitude, interference on birds migration routes and so on. This undeniable expansion is pushing wind farms near populated areas throughout the years, where noise regulation is more stringent. That demands solutions for the wind turbine (WT) industry, in order to produce quieter WT units. Focusing in the subject of airfoil noise prediction, it can help the assessment and design of quieter wind turbine blades. Considering the airfoil noise as a composition of many sound sources, and in light of the fact that the main noise production mechanisms are the airfoil self-noise and the turbulent inflow (TI) noise, this work is concentrated on the latter. TI noise is classified as an interaction noise, produced by the turbulent inflow, incident on the airfoil leading edge (LE). Theoretical and semi-empirical methods for the TI noise prediction are already available, based on Amiet’s broadband noise theory. Analysis of many TI noise prediction methods is provided by this work in the literature review, as well as the turbulence energy spectrum modeling. This is then followed by comparison of the most reliable TI noise methodologies, qualitatively and quantitatively, with the error estimation, compared to the Ffowcs Williams-Hawkings solution for computational aeroacoustics. Basis for integration of airfoil inflow noise prediction into a wind turbine noise prediction code is the final goal of this work.

Disturbance of harbour porpoises during construction of the first seven offshore wind farms in Germany

2018 ◽  
Vol 596 ◽  
pp. 213-232 ◽  
Author(s):  
MJ Brandt ◽  
AC Dragon ◽  
A Diederichs ◽  
MA Bellmann ◽  
V Wahl ◽  
...  
Keyword(s):  
Wind Farms ◽  
Offshore Wind ◽  
Offshore Wind Farms
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