Critical clearing time of doubly fed induction generator

A detailed model of grid-connected doubly-fed induction generator (DFIG) suitable for fault analysis is presented. 5th order model of wound rotor induction machine together with a two-mass model of the mechanical drive-train is employed to investigate transient voltage stability of integrated wind turbine. Converter system is represented in such a way to contain adequate model of the rotor- and stator-side converters as well as the DC-link components. PWM converters, respective controllers and the switching schemes are represented in the same reference frame as the machine to realize a combined machine-converter model. Applying a balanced three-phase network fault to the simulated system, case studies are conducted to determine the value of the critical clearing time (CCT) for the DFIG as well as the fixed-speed induction generator (FSIG). Further investigations are also made to evaluate the impact of the shaft system parameters on the CCT of a grid- connected FSIG and DFIG.

[1]  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).

[2]  Paul C. Krause,et al.  Analysis of electric machinery , 1987 .

[3]  Chee-Mun. Ong,et al.  Dynamic simulation of electric machinery : using MATLAB/SIMULINK , 1997 .

[4]  Vladislav Akhmatov,et al.  Variable-Speed Wind Turbines with Doubly-Fed Induction Generators , 2002 .

[5]  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.

[6]  S.K. Salman,et al.  Modelling wind turbine-generators for fault ride-through studies , 2004, 39th International Universities Power Engineering Conference, 2004. UPEC 2004..

[7]  Paul C. Krause,et al.  Analysis and Simplified Representations of Rectifier - Inverter Reluctance-Synchronous Motor Drives , 1969 .

[8]  T. Lipo,et al.  Vector Control and Dynamics of AC Drives , 1996 .

[9]  Janaka Ekanayake,et al.  Dynamic modeling of doubly fed induction generator wind turbines , 2003 .

[10]  Nicholas Jenkins,et al.  Comparison of fixed speed and doubly-fed induction wind turbines during power system disturbances , 2003 .

[11]  F. Blaabjerg,et al.  Voltage recovery of grid-connected wind turbines with DFIG after a short-circuit fault , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[12]  Jon Clare,et al.  Doubly fed induction generator using back-to-back PWM converters and its application to variable-speed wind-energy generation , 1996 .

[13]  D. L. Dickmander,et al.  Integration of large wind farms into utility grids pt. I - Modeling of DFIG , 2003, 2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491).

[14]  Frede Blaabjerg,et al.  Control in Power Electronics , 2002 .

[15]  Vladislav Akhmatov Variable-speed Wind Turbines with Doubly-fed Induction Generators Part II: Power System Stability , 2002 .

[16]  Julio Usaola,et al.  Incidence on Power System Dynamics of High Penetration of Fixed Speed and Doubly Fed Wind Energy Systems: Study of the Spanish Case , 2002, IEEE Power Engineering Review.