Power quality improvement in stand-alone microgrid including fixed-speed wind farm: Role of dynamic voltage restorer

According to the growth of power generated by wind farms and the increased number of non-linear loads, providing a high quality electrical power, should be considered. This paper is addressed the issue of application and analysis of a Dynamic Voltage Restorer (DVR) to enhance the quality of power flows in a stand-alone microgrid, including wind energy conversion systems and the sensitive loads. The wind farm is consist of fixed-speed wind turbines coupled with synchronous machines which the role of DVR in voltage sag mitigation of such a system is simulated in well-known electromagnetic transient simulation program PSCAD/EMTDC version 4.2. The DVR is an effective device to protect the sensitive loads from any disturbance. The regulation of load terminal voltage against any sag/swell distortion is the main purpose of the DVR. The comprehensive results are illustrated to assess the application of DVR as a custom power solution.

[1]  John A. McNeill,et al.  Electric Power Quality , 1997 .

[2]  Wenzhong Gao,et al.  Performance improvement of a wind power distribution station using a dynamic voltage restorer , 2010, North American Power Symposium 2010.

[3]  Ola Carlson,et al.  Förstudie av elsystem till vindkraftverk med variabelt varvtal , 1993 .

[4]  G. W. Chang,et al.  Power Quality Assessment of Wind Turbines by Matlab/Simulink , 2010, 2010 Asia-Pacific Power and Energy Engineering Conference.

[5]  Seyed Hossein Hosseini,et al.  Flying capacitor multicell converter based dynamic voltage restorer , 2009, 41st North American Power Symposium.

[6]  Mika Rasila,et al.  Torque- and Speed Control of a Pitch Regulated Wind Turbine , 2003 .

[7]  J. A. Solsona,et al.  Control Strategy of a DVR to Improve Stability in Wind Farms Using Squirrel-Cage Induction Generators , 2011, IEEE Transactions on Power Systems.

[8]  Anders Grauers.  Synchronous generator and frequency converter in wind turbine applications : system design and efficiency , 1994 .

[9]  D.M. Vilathgamuwa,et al.  Analysis of series compensation and DC-link voltage controls of a transformerless self-charging dynamic voltage restorer , 2004, IEEE Transactions on Power Delivery.

[10]  J. Faiz,et al.  Design and simulation of UPFC for enhancement of power quality in transmission lines , 2010, 2010 International Conference on Power System Technology.

[11]  Malabika Basu,et al.  Power Quality in Grid Connected Renewable Energy Systems: Role of Custom Power Devices , 2010 .

[12]  E. Acha,et al.  Modeling and Analysis of Custom Power Systems by PSCAD/EMTDC , 2001, IEEE Power Engineering Review.

[13]  S. Bacha,et al.  Fixed-Speed Wind Farm Operation Improvement by Using DVR Devices , 2007, 2007 IEEE International Symposium on Industrial Electronics.

[14]  Seung-Ki Sul,et al.  Controller design for dynamic voltage restorer with harmonics compensation function , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[15]  M. Kazerani,et al.  Maximum Power Tracking Control for a Wind Turbine System Including a Matrix Converter , 2009, IEEE Transactions on Energy Conversion.

[16]  Seyed Hossein Hosseini,et al.  Stacked multicell converter based DVR with energy minimized compensation strategy , 2009, 41st North American Power Symposium.

[17]  Narain G. Hingorani,et al.  Introducing custom power , 1995 .

[18]  S. Masoud Barakati,et al.  Voltage sag and swell compensation with DVR based on asymmetrical cascade multicell converter , 2011, 2011 North American Power Symposium.

[19]  Faisal A. Mohamed,et al.  Microgrid modelling and online management , 2008 .