Fault ride-through capability of a DFIG in isolated grids employing DVR and supercapacitor energy storage

Abstract In order to utilize Doubly Fed Induction Generators (DFIGs) as primary power source in an isolated system, they should be able to regulate the voltage and frequency of the system as well as ride-through faults. This paper proposes a new control strategy for a DFIG operating in an isolated power system, accomplished by a Dynamic Voltage Restorer (DVR) and a Supercapacitor Energy Storage System (SCESS), in order to ride through symmetrical and asymmetrical faults. During faults, the DFIG continues to operate normally, while the active power mismatch is handled by the SCESS. In particular, during asymmetrical faults, the DFIG and the DVR are properly controlled in order to feed the non-faulty phases uninterruptedly. When integrated in a power system with conventional synchronous generators, the proposed control strategy improves the Fault Ride-Through (FRT) capability of a DFIG, while providing frequency and voltage support to the system throughout the fault duration. Thus, the transient stability of the power system is significantly improved. The effectiveness of the proposed control method under different fault conditions is verified by detailed simulation results.

[1]  Greg Asher,et al.  A doubly fed induction generator using back-to-back PWM converters supplying an isolated load from a variable speed wind turbine , 1996 .

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

[3]  Liangzhong Yao,et al.  Novel Integration of Wind Generator-Energy Storage Systems Within Microgrids , 2012, IEEE Transactions on Smart Grid.

[4]  S. Afsharnia,et al.  A Fast and Effective Control Scheme for the Dynamic Voltage Restorer , 2011, IEEE Transactions on Power Delivery.

[5]  Ted K.A. Brekken,et al.  Supercapacitor energy storage for wind energy integration , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[6]  Anca Daniela Hansen,et al.  Fault ride-through capability of DFIG wind turbines , 2007 .

[7]  Wlodzimierz Koczara,et al.  DFIG-Based Power Generation System With UPS Function for Variable-Speed Applications , 2008, IEEE Transactions on Industrial Electronics.

[8]  A. Yazdani,et al.  Multimode Control of a DFIG-Based Wind-Power Unit for Remote Applications , 2009, IEEE Transactions on Power Delivery.

[9]  Geng Yang,et al.  Short circuit current analysis of DFIG-type WG with crowbar protection under grid faults , 2012, 2012 IEEE International Symposium on Industrial Electronics.

[10]  Janusz Bialek,et al.  Power System Dynamics: Stability and Control , 2008 .

[11]  Josep M. Guerrero,et al.  Dynamics Assessment of Advanced Single-Phase PLL Structures , 2013, IEEE Transactions on Industrial Electronics.

[12]  Frede Blaabjerg,et al.  Control and testing of a dynamic voltage restorer (DVR) at medium voltage level , 2004 .

[13]  Luis Marroyo,et al.  Doubly Fed Induction Machine : Modeling and Control for Wind Energy Generation , 2011 .

[14]  Louis-A. Dessaint,et al.  Modeling and experimental validation of internal faults in salient pole synchronous machines including space harmonics , 2006, Math. Comput. Simul..

[15]  F. Blaabjerg,et al.  A detailed comparison of system topologies for dynamic voltage restorers , 2005, IEEE Transactions on Industry Applications.

[16]  Josep M. Guerrero,et al.  Decentralized control for parallel operation of distributed generation inverters using resistive output impedance , 2007, 2005 European Conference on Power Electronics and Applications.

[17]  Patrick Wheeler,et al.  Control strategy for a doubly-fed induction generator feeding an unbalanced grid or stand-alone load , 2009 .

[18]  M. Mohamadian,et al.  Microgrid Dynamic Performance Improvement Using a Doubly Fed Induction Wind Generator , 2009, IEEE Transactions on Energy Conversion.

[19]  Charis S. Demoulias,et al.  A combined fault ride-through and power smoothing control method for full-converter wind turbines employing Supercapacitor Energy Storage System , 2014 .

[20]  R. W. De Doncker,et al.  Doubly fed induction generator systems for wind turbines , 2002 .

[21]  A.H.M.A. Rahim,et al.  Supercapacitor energy storage system for fault ride-through of a DFIG wind generation system , 2012 .

[22]  Abdellatif Miraoui,et al.  Current Harmonic Compensation by a Single-Phase Shunt Active Power Filter Controlled by Adaptive Neural Filtering , 2009, IEEE Transactions on Industrial Electronics.

[23]  Yung-Ruei Chang,et al.  Simplified Reactive Power Control for Single-Phase Grid-Connected Photovoltaic Inverters , 2014, IEEE Transactions on Industrial Electronics.

[24]  Sadegh Vaez-Zadeh,et al.  Efficient fault-ride-through control strategy of DFIG-based wind turbines during the grid faults , 2014 .

[25]  Hong-Hee Lee,et al.  Performance Enhancement of Stand-Alone DFIG Systems With Control of Rotor and Load Side Converters Using Resonant Controllers , 2012, IEEE Transactions on Industry Applications.

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