Design and Analysis of a Slope Voltage Control for a DFIG Wind Power Plant

This paper addresses a detailed design of a wind power plant and turbine slope voltage control in the presence of communication delays for a wide short-circuit ratio range operation. The implemented voltage control scheme is based upon the secondary voltage control concept, which offers fast response to grid disturbances, despite the communication delays, i.e., this concept is based on a primary voltage control, located in the wind turbine, which follows an external voltage reference sent by a central controller, called secondary voltage control, which is controlling the voltage at the point of connection with the grid. The performance has been tested using PSCAD/EMTDC program. The plant layout used in the simulations is based on an installed wind power plant, composed of 23 doubly fed generator wind turbines. The resulting performance is evaluated using a compilation of grid code voltage control requirements. The results show that fast response to grid disturbances can be achieved using the secondary voltage control scheme, and the fulfillment of the design requirements can be extended for a wide range of short-circuit ratios.

[1]  I. Erlich,et al.  Grid code requirements concerning connection and operation of wind turbines in Germany , 2005, IEEE Power Engineering Society General Meeting, 2005.

[2]  S.I. Al-Majed.  Secondary Voltage Control: Enhancing power system voltage profile , 2008, 2008 IEEE 2nd International Power and Energy Conference.

[3]  Gehao Sheng,et al.  Secondary voltage regulation based on wide area network , 2009, 2009 IEEE Power & Energy Society General Meeting.

[4]  S. K. Salman,et al.  Windmill modelling consideration and factors influencing the stability of a grid-connected wind power based embedded generator , 2003, 2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491).

[5]  Remus Teodorescu,et al.  DFIG turbine representation for small signal voltage control studies , 2010, 2010 12th International Conference on Optimization of Electrical and Electronic Equipment.

[6]  A. Tapia,et al.  Proportional–Integral Regulator-Based Approach to Wind Farm Reactive Power Management for Secondary Voltage Control , 2007, IEEE Transactions on Energy Conversion.

[7]  S. Narita,et al.  Multicomputer Control of System Voltage and Reactive Power on Real-Time Basis , 1973 .

[8]  J. Jatskevich,et al.  Simulation and analysis of starting transients in rotor-chopper-controlled doubly-fed induction motors , 2008, 2008 IEEE Canada Electric Power Conference.

[9]  G. Joos,et al.  A Secondary Voltage Control Strategy for Transmission Level Interconnection of Wind Generation , 2008, IEEE Transactions on Power Electronics.

[10]  J. Morren,et al.  Ridethrough of wind turbines with doubly-fed induction generator during a voltage dip , 2005, IEEE Transactions on Energy Conversion.

[11]  S. Salman,et al.  Windmill Modeling Consideration and Factors Influencing the Stability of a Grid-Connected Wind Power Based Embedded Generator , 2002, IEEE Power Engineering Review.

[12]  Tsu-Tian Lee,et al.  Using neural networks to improve gain scheduling techniques for linear parameter-varying systems , 1996, Proceedings of 4th IEEE International Workshop on Advanced Motion Control - AMC '96 - MIE.

[13]  D. Maratukulam,et al.  Recent results in secondary voltage control of power systems , 1991, IEEE Power Engineering Review.

[14]  P. Kundur,et al.  Power system stability and control , 1994 .

[15]  George Ellis,et al.  Control System Design Guide , 2012 .