Evaluation of different inertial control methods for variable-speed wind turbines simulated by fatigue, aerodynamic, structures and turbulence (FAST)

To mitigate the degraded power system inertia and undesirable primary frequency response caused by large-scale wind power integration, the frequency support capabilities of variable-speed wind turbines is studied in this work. This is made possible by controlled inertial response, which is demonstrated on a research turbine - controls advanced research turbine, 3-bladed (CART3). Two distinct inertial control (IC) methods are analysed in terms of their impacts on the grids and the response of the turbine itself. The released kinetic energy in the IC methods are determined by the frequency measurement or shaped active power reference in the turbine speed-power plane. The wind turbine model is based on the high-fidelity turbine simulator fatigue, aerodynamic, structures and turbulence, which constitutes the aggregated wind power plant model with the simplified power converter model. The IC methods are implemented over the baseline CART3 controller, evaluated in the modified 9-bus and 14-bus testing power grids considering different wind speeds and different wind power penetration levels. The simulation results provide various insights on designing such kinds of ICs. The authors calculate the short-term dynamic equivalent loads and give a discussion about the turbine structural loadings related to the inertial response.

[1]  Eduard Muljadi,et al.  Inertial response of wind power plants: A comparison of frequency-based inertial control and stepwise inertial control , 2016, 2016 North American Power Symposium (NAPS).

[2]  Eduard Muljadi,et al.  Stable Adaptive Inertial Control of a Doubly-Fed Induction Generator , 2016, IEEE Transactions on Smart Grid.

[3]  Eduard Muljadi,et al.  Dynamic Droop–Based Inertial Control of a Doubly-Fed Induction Generator , 2016, IEEE Transactions on Sustainable Energy.

[4]  Raja Ayyanar,et al.  Control strategy to mitigate the impact of reduced inertia due to doubly fed induction generators on large power systems , 2011, 2011 IEEE Power and Energy Society General Meeting.

[5]  B. Jonkman,et al.  TurbSim User's Guide , 2005 .

[6]  G. Joos,et al.  Short-term frequency support utilizing inertial response of DFIG wind turbines , 2011, 2011 IEEE Power and Energy Society General Meeting.

[7]  Eduard Muljadi,et al.  Releasable Kinetic Energy-Based Inertial Control of a DFIG Wind Power Plant , 2016, IEEE Transactions on Sustainable Energy.

[8]  Mohit Singh,et al.  Dynamic models for wind turbines and wind power plants , 2011 .

[9]  Susan A. Frost,et al.  Direct adaptive control of a utility‐scale wind turbine for speed regulation , 2009 .

[10]  Mohit Singh,et al.  Simulation for Wind Turbine Generators -- With FAST and MATLAB-Simulink Modules , 2014 .

[11]  Hak-Man Kim,et al.  Development of Hardware In-the-Loop Simulation System for Testing Operation and Control Functions of Microgrid , 2010, IEEE Transactions on Power Electronics.

[12]  Jason Jonkman,et al.  FAST User's Guide , 2005 .

[13]  Zhe Chen,et al.  Overview of different wind generator systems and their comparisons , 2008 .

[14]  E. Muljadi,et al.  Equivalencing the collector system of a large wind power plant , 2006, 2006 IEEE Power Engineering Society General Meeting.

[15]  G. Moschopoulos,et al.  Simulation of a Wind Turbine With Doubly Fed Induction Generator by FAST and Simulink , 2008, IEEE Transactions on Energy Conversion.

[16]  T. Thiringer,et al.  Temporary Primary Frequency Control Support by Variable Speed Wind Turbines— Potential and Applications , 2008, IEEE Transactions on Power Systems.

[17]  S. Santoso,et al.  Understanding inertial and frequency response of wind power plants , 2012, 2012 IEEE Power Electronics and Machines in Wind Applications.

[18]  Vahan Gevorgian,et al.  Investigating the Impacts of Wind Generation Participation in Interconnection Frequency Response , 2015, IEEE Transactions on Sustainable Energy.

[19]  L.Y. Pao,et al.  Control of variable-speed wind turbines: standard and adaptive techniques for maximizing energy capture , 2006, IEEE Control Systems.

[20]  Eduard Muljadi,et al.  Frequency Control Support of a Doubly-Fed Induction Generator Based on the Torque Limit , 2016, IEEE Transactions on Power Systems.

[21]  Joseph H. Eto,et al.  Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation , 2011 .

[22]  Vahan Gevorgian,et al.  Effects of power reserve control on wind turbine structural loading , 2016 .

[23]  Jin-Ming Lin,et al.  Coordinated frequency regulation by doubly fed induction generator-based wind power plants , 2012 .

[24]  Eduard Muljadi,et al.  Improved inertial control for permanent magnet synchronous generator wind turbine generators , 2016 .

[25]  A. D. Wright,et al.  Modern Control Design for Flexible Wind Turbines , 2004 .