Design of a multilevel control strategy for integration of stand-alone wind/diesel system

Abstract Control of variable speed wind turbines coupled with squirrel cage induction generators situated in remote areas is difficult and suffers from some fundamental problems. These systems cannot stabilize frequency and voltage of the grid in acceptable ranges. Changes in the load during 1 day and sudden changes in wind speed also make this problem harder to deal with. In this paper, a system consisting of three wind turbines integrated with two types of diesel generator connected to a variable load is analyzed, and a new multilevel control strategy is proposed. A new load model is implemented by changing power demand based on load curve. This control method adjusts a controller based on past system and environmental data. Simulations based on PSCAD/EMTDC software show the ability of the proposed control system to provide high quality power for this type of load.

[1]  T. F. Chan,et al.  Capacitance requirements of self-excited induction generators , 1993 .

[2]  Ahmed M. Kassem,et al.  Robust control of an isolated hybrid wind-diesel power system using Linear Quadratic Gaussian approach , 2011 .

[3]  M.H. Nehrir,et al.  Parallel operation of wind turbine, fuel cell, and diesel generation sources , 2004, IEEE Power Engineering Society General Meeting, 2004..

[4]  Kaci Ghedamsi,et al.  Improvement of the performances for wind energy conversions systems , 2010 .

[5]  W. Schellong.  Integrated energy management in distributed systems , 2006, International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006..

[6]  K. E. Yeager,et al.  Modeling of emergency diesel generators in an 800 megawatt nuclear power plant , 1993 .

[7]  George Stavrakakis,et al.  A general simulation algorithm for the accurate assessment of isolated diesel-wind turbines systems interaction. I. A general multimachine power system model , 1995 .

[8]  Thomas Ackermann,et al.  Wind Power in Power Systems , 2005 .

[9]  M. O'Malley,et al.  System operation with a significant wind power penetration , 2004, IEEE Power Engineering Society General Meeting, 2004..

[10]  A.S. Kini,et al.  Modelling and Simulation of a Wind/Diesel Hybrid Power System , 2006, 2006 IEEE International Conference on Industrial Technology.

[11]  R. Sebastian.  Modelling and simulation of a high penetration wind diesel system with battery energy storage , 2011 .

[12]  Abdul Azim Sobaih,et al.  An intelligent maximum power extraction algorithm for hybrid wind–diesel-storage system , 2010 .

[13]  Reza Noroozian,et al.  Design of a predictive control strategy for integration of stand-alone wind/diesel system , 2010, 2010 IEEE International Conference on Power and Energy.

[14]  R. Sebastian,et al.  Smooth transition from wind only to wind diesel mode in an autonomous wind diesel system with a battery-based energy storage system , 2008 .

[15]  J. Machowski.  Power System Dynamics And Stability , 1997 .

[16]  M.A. Mueller,et al.  Modelling Fully Variable Speed Hybrid Wind Diesel Systems , 2006, Proceedings of the 41st International Universities Power Engineering Conference.

[17]  J. Winkelman,et al.  Control Design and Performance Analysis of a 6 MW Wind Turbine-Generator , 1983, IEEE Transactions on Power Apparatus and Systems.