Doubly-Fed Wind Farm Engineering Aggregation Model Used for Planning

2014 ◽  
Vol 986-987 ◽  
pp. 291-294
Author(s):  
Meng Dai
Keyword(s):  
Power Flow ◽  
Wind Farm ◽  
Transient Stability ◽  
Equivalent Model ◽  
Planning Stage ◽  
Aggregation Model ◽  
Technical Requirements ◽  
Farm Model ◽  
Integration Planning ◽  
Doubly Fed

Establishing an appropriate aggregation model of wind farm is the first step of the electrical computation in wind power integration planning. This paper first summarizes the technical requirements of wind farm model from the viewpoint of engineering, then proposes an aggregation DFIG model of wind farm. Because of the lack of measured data in the planning stage, the single equivalent model is used in this paper, and be improved by considering the equivalent collection lines model. The accuracy of the aggregation model in different electrical calculation, such as power flow, transient stability and shortcut current simulation, is verified through a sample system in DIgSILENT.

Modelling Wind Farm with Doubly Fed Induction Generators Based on Characteristic Fusion

2014 ◽  
Vol 494-495 ◽  
pp. 1820-1824
Author(s):  
Dong Ning Wei ◽  
Xue Min Zhang ◽  
Jian Min Ye
Keyword(s):  
Wind Speed ◽  
Wind Farm ◽  
Measurement Data ◽  
Equivalent Model ◽  
Modelling Framework ◽  
Induction Generators ◽  
Doubly Fed Induction Generators ◽  
Wake Model ◽  
Basic Characteristics ◽  
Doubly Fed

In this paper, a novel modelling approach based on characteristic fusion is proposed and used to build a static equivalent model of wind farm. Firstly, the modelling framework based on characteristic fusion is given. Secondly, the basic characteristics of wind farm including characteristic of wind turbine generator (WTG), wind speed spatial distribution and characteristic of wind farm are analyzed according to the framework. Then detailed modelling process is provided utilizing SVR as a fusion tool. This approach combines the advantages of both mechanism and non-mechanism methods with both satisfactory fitting ability and generalization ability. It only requires the maximum and minimum value of wind speed among the wind farm, rather than accurate wake model as mechanism method nor massive measurement data as non-mechanism method. Numerical simulation indicates the effectiveness and robustness of the proposed method. When available data is reduced or includes bad measurement, the proposed method can still keep favorable performance.

Transient Stability of Wind Power System with DFIG

2014 ◽  
Vol 986-987 ◽  
pp. 635-638
Author(s):  
Li Sa Guo
Keyword(s):  
Mathematical Model ◽  
Power System ◽  
Wind Turbine ◽  
Wind Power ◽  
Pitch Angle ◽  
Transient Stability ◽  
Equivalent Model ◽  
Wind Power System ◽  
Doubly Fed ◽  
Infinite Power

Analyzed mathematical model of wind power which consist doubly-fed wind turbine (DFIG).Strategies for pitch angle control were developed.Used MATLAB to establish equivalent model contain infinite power system concluding DFIG ,The results showed that wind power with DFIG have good transient stability.

Research on Effects of STATCOM on Voltage in Wind Farm Based on PSASP

2013 ◽  
Vol 433-435 ◽  
pp. 1320-1324
Author(s):  
Wei Zheng ◽  
Shi Qun Li ◽  
Yong Zhi ◽  
Run Qing Bai ◽  
Chen Liang ◽  
...  
Keyword(s):  
Power System ◽  
Power Flow ◽  
Wind Farm ◽  
Transient Stability ◽  
System Analysis ◽  
Transient State ◽  
Gansu Province ◽  
Static Synchronous Compensator ◽  
Stability Calculation ◽  
Power Base

Recently, the static synchronous compensator (STATCOM) device has been installed in Jiuquan wind farm in Gansu Province. To study its ability to support voltage, this paper presents a study of the mathematical model of the steady state and transient state of STATCOM and then uses the power system analysis software package (PSASP) to establish a user-defined model of STATCOM. In addition, the model is added into the power system example (CEPRI 7). After that, the power flow calculation and transient stability calculation are carried out to simulate and analyze. At last the STATCOM device is field tested in Jiuquan wind power base. Test results verify that STATCOM effectively supports the grid voltage.

A Control Strategy for Transient Stability Improvement of Doubly-Fed Wind Power Generation System

2014 ◽  
Vol 953-954 ◽  
pp. 337-341
Author(s):  
Chao Xu ◽  
Jin Ling Lu ◽  
Jin Long Zhou
Keyword(s):  
Control Strategy ◽  
Wind Farm ◽  
Transient Stability ◽  
Reactive Power ◽  
System Stability ◽  
Control Loop ◽  
Reactive Control ◽  
Voltage Control Strategy ◽  
Transient Voltage ◽  
Doubly Fed

A novel inverter control strategy to enhance the transient stability of grid-connected wind farm based on doubly-fed induction generator (DFIG) is presented. Adding transient angle control strategy in the rotor side converter active control loop, this can dissipate the system unbalancing energy and restrain the system oscillations by the variation of wind turbine speed. Adding transient voltage control strategy in reactive control loop, this can provide fast reactive power compensation and support the restoration and reconstruction of the grid voltage when fault occurred. The control strategy which can improve the transient Angle stability and transient voltage stability at the same time is put forward. Finally, a testing system including a DFIG-based wind farm is realized using DigSILENT/Power Factory, the strategy validation and the contribution to power system stability enhancement are verified by simulation.

A Coherency-Based Equivalent Model of a Large Scale Wind Farm

2011 ◽  
Vol 347-353 ◽  
pp. 2342-2346
Author(s):  
Rong Fu ◽  
Bao Yun Wang ◽  
Wan Peng Sun
Keyword(s):  
Wind Power ◽  
Wind Turbines ◽  
Large Scale ◽  
Wind Farm ◽  
Dynamic Models ◽  
Wind Farms ◽  
Model Complexity ◽  
Equivalent Model ◽  
Detailed Model ◽  
Doubly Fed

With increasing installation capacity and wind farms penetration, wind power plays more important role in power systems, and the modeling of wind farms has become an interesting research topic. In this paper, a coherency-based equivalent model has been discussed for the doubly fed induction generator (DFIG). Firstly, the dynamic models of wind turbines, DFIG and the mechanisms are briefly introduced. Some existing dynamic equivalent methods such as equivalent wind model, variable speed wind turbine model, parameter identification method and modal equivalent method to be used in wind farm aggregation are discussed. Then, considering wind power fluctuations, a new equivalent model of a wind farm equipped with doubly-fed induction generators is proposed to represent the interactions of the wind farm and grid. The method proposed is based on aggregating the coherent group wind turbines into an equivalent one. Finally, the effectiveness of the equivalent model is demonstrated by comparison with the wind farm response obtained from the detailed model. The dynamic simulations show that the present model can greatly reduce the computation time and model complexity.

scholarly journals Voltage and Reactive Power Control in DFIG Wind Farm Load bus by FACT Device – UPFC

2021 ◽  
Vol 23 (12) ◽  
pp. 207-211
Author(s):  
DR . Dipesh. M .Patel ◽  
◽  
Prof. (Dr.) Karunesh Saxena ◽  
Keyword(s):  
Power Control ◽  
Power Flow ◽  
Wind Farm ◽  
Reactive Power ◽  
Unified Power Flow Controller ◽  
Reactive Power Control ◽  
Flow Controller ◽  
Doubly Fed ◽  
Farm System ◽  
Power Flow Controller

This paper deals with the analysis and simulation of the Unified Power Flow Controller (UPFC) for Grid connected DFIG wind farm system mitigation. The purpose of the paper is to derive and analyze a reactive power control strategy of UPFC dedicated for DFIG mitigation. The FACT device Unified Power Flow Controller (UPFC) is connected with load bus. Paper has demonstrated the improvement in voltages, power transferred to grid, active and reactive power control. Matlab/simulink is used for the work. Paper demonstrated the simulation results for with and without UPFC for Grid connected Doubly Fed Induction Generator wind farm system.

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