Modelling and control of variable speed wind turbines for power system studies

Wind Energy ◽  
2010 ◽  
Vol 13 (4) ◽  
pp. 307-322 ◽  
Author(s):  
Gabriele Michalke ◽  
Anca D. Hansen
Keyword(s):  
Power System ◽  
Wind Turbines ◽  
Variable Speed ◽  
And Control

scholarly journals Modeling Wind Turbines in the Simulation of Power System Dynamics

2010 ◽  
Vol 26 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Istvan Erlich ◽  
Fekadu Shewarega ◽  
Oliver Scheufeld
Keyword(s):  
Power System ◽  
System Dynamics ◽  
Wind Turbines ◽  
Reactive Power ◽  
Induction Machine ◽  
Generic Model ◽  
Variable Speed ◽  
Interconnected System ◽  
Power System Dynamics ◽  
Space Phasor

Modeling Wind Turbines in the Simulation of Power System DynamicsThis paper deals with the modeling of variable speed wind turbines for stability studies. Using the space-phasor representation and the fundamental relationships governing the operation of the machine quasi stationary model, suitable control algorithms for the simulation of the doubly-fed induction machine (DFIM) as well as the permanent magnet synchronous machine (PMSM) operating on an interconnected system are developed. The control schemes include the pitch-angle/speed control and the decoupled control of the real and reactive power outputs. As an additional modeling option, the generic model for variable speed machine has been introduced. The models were then implemented on a representative test network, and simulations have been carried out to observe the response of the control system to typical abnormal situations such as three phase grid faults to compare the accuracy of the generic models with the detailed quasi-stationary (QSS) models.

The effect of variable speed wind turbines on a 21 bus power system

2017 ◽  
Author(s):  
Brandon Parker ◽  
Steven Blevins ◽  
Michael Facemire ◽  
Kenan Hatipoglu
Keyword(s):  
Power System ◽  
Wind Turbines ◽  
Variable Speed

Modelling and control of synchronous generators for wide-range variable-speed wind turbines

Wind Energy ◽  
2007 ◽  
Vol 10 (3) ◽  
pp. 231-246 ◽  
Author(s):  
Gnanasambandapillai Ramtharan ◽  
Nicholas Jenkins ◽  
Olimpo Anaya-Lara
Keyword(s):  
Wind Turbines ◽  
Variable Speed ◽  
Synchronous Generators ◽  
Wide Range ◽  
And Control

Full-Load Converter Connected Asynchronous Generators for MW Class Wind Turbines

2005 ◽  
Vol 29 (4) ◽  
pp. 341-351 ◽  
Author(s):  
Vladislav Akhmatov
Keyword(s):  
Wind Turbines ◽  
Short Circuit ◽  
Wind Farms ◽  
Variable Speed ◽  
Full Load ◽  
Frequency Converters ◽  
Fault Ride Through ◽  
System Operator ◽  
And Control ◽  
Large Wind

Wind turbines equipped with full-load converter-connected asynchronous generators are a known concept. These have rating up to hundreds of kW and are a feasible concept for MW class wind turbines and may have advantages when compared to conventional wind turbines with directly connected generators.* The concept requires the use of full-scale frequency converters, but the mechanical gearbox is smaller than in conventional wind turbines of the same rating. Application of smaller gearbox may reduce the no-load losses in the wind turbines, which is why such wind turbines with converter connected generators may start operation at a smaller wind speed. Wind turbines equipped with such converted connected asynchronous generators are pitch-controlled and variable-speed. This allows better performance and control. The converter control may be applied to support the grid voltage at short-circuit faults and to improve the fault-ride-through capability of the wind turbines, which makes the concepts relevant for large wind farms. The Danish transmission system operator Energinet-DK has implemented the general model of wind turbines equipped with converter connected asynchronous generators with the simulation tool Powerfactory (DlgSilent). The article presents Energinet-DK's experience of modeling this feasible wind turbine concept.

scholarly journals Analysis of the Implementation of the Primary and/or Inertial Frequency Control in Variable Speed Wind Turbines in an Isolated Power System with High Renewable Penetration. Case Study: El Hierro Power System

Electronics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 901 ◽  
Author(s):  
Guillermo Martínez-Lucas ◽  
José Ignacio Sarasúa ◽  
Juan Ignacio Pérez-Díaz ◽  
Sergio Martínez ◽  
Danny Ochoa
Keyword(s):  
Wind Speed ◽  
Power Systems ◽  
Power System ◽  
Wind Turbines ◽  
Wind Farm ◽  
Frequency Control ◽  
Frequency Regulation ◽  
Variable Speed ◽  
El Hierro

With high levels of wind energy penetration, the frequency response of isolated power systems is more likely to be affected in the event of a sudden frequency disturbance or fluctuating wind conditions. In order to minimize excessive frequency deviations, several techniques and control strategies involving Variable Speed Wind Turbines (VSWTs) have been investigated in isolated power systems. In this paper, the main benefits and disadvantages of introducing VSWTs—both their inertial contribution and primary frequency regulation—in an exclusively renewable isolated power system have been analyzed. Special attention has been paid to the influence of the delays of control signals in the wind farm when VSWTs provide primary regulation as well as to the wind power reserve value which is needed. To achieve this objective, a methodology has been proposed and applied to a case study: El Hierro power system. A mathematical dynamic model of the isolated power system, including exclusively renewable technologies, has been described. Representative generation schedules and wind speed signals have been fixed according to the observed system. Finally, in order to obtain conclusions, realistic system events such as fluctuations in wind speed and the outage of the generation unit with the higher assigned power in the power system have been simulated.

scholarly journals Coordinated Frequency Regulation of Smart Grid by Demand Side Response and Variable Speed Wind Turbines

2021 ◽  
Vol 9 ◽  
Author(s):  
Qi Zhu ◽  
Yingjie Wang ◽  
Jiuxu Song ◽  
L. Jiang ◽  
Yingliang Li
Keyword(s):  
Smart Grid ◽  
Power System ◽  
Wind Power ◽  
Wind Turbines ◽  
Active Power ◽  
Frequency Regulation ◽  
Demand Side ◽  
Variable Speed ◽  
High Penetration ◽  
Demand Side Response

Frequency stability of the power system is impacted by the increasing penetration of wind power because the wind power is intermittent. Meanwhile, sometimes the demand side loads increase quickly to require more power than total power produced. So balancing the active power in the power system to maintain the frequency is the main challenge of the high penetration of wind power to the smart grid. This paper proposes coordination rotor speed control (RSC), pitch angle control (PAC) and inertial control (IC) to control wind turbines, together with demand side response (DSR) participating in frequency regulation to balance active power in the power system. Firstly, the model of a single area load frequency control (LFC) system is obtained, which includes variable-speed wind turbines (VSWT) and DSR containing aggregated air conditioners and plug-in electric vehicles (PEVs). Then the RSC, PAC and IC, which controls wind turbines participating in frequency regulation in the power system, are introduced, respectively. Finally, the coordination of these three methods for wind turbines in different wind speeds is proposed. Case studies are carried out for the single area LFC system with a wind farm and DSR supported grid frequency. Coordination RSC and PAC combined IC are used to control wind turbines with DSR to balance active power in the power system. The proposed method used in the power system with high penetration of wind power and fluctuation of demand load is tested, respectively. Coordinated RSC or PAC with DSR can increase penetration of wind power and reduce peak load.

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