Integrated electrical-mechanical analysis - The impact of power system on wind turbine design and vice versa

Transcription

1 Downloaded from orbit.dtu.dk on: Nov 09, 2018 Integrated electrical-mechanical analysis - The impact of power system on wind turbine design and vice versa Barahona Garzón, Braulio Publication date: 2013 Link back to DTU Orbit Citation (APA): Barahona Garzón, B. (Author). (2013). Integrated electrical-mechanical analysis - The impact of power system on wind turbine design and vice versa. Sound/Visual production (digital) General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Users may download and print one copy of any publication from the public portal for the purpose of private study or research. You may not further distribute the material or use it for any profit-making activity or commercial gain You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

2 Danish Wind Power Research 2013 May 27-28, 2013, Fredericia, DK Integrated electrical-mechanical analysis The impact of power system on wind turbine design and vice versa Braulio Barahona

3 Acknowledgements Wind Energy Systems - Poul Sørensen - Anca Hansen - Nicolaos Cutululis Aeroelastic Design - Peter Bjørn Andersen - Lars Christian Henriksen - Anders M. Hansen

4 Introduction Outline Motivation Conceptual frame work for integrated design Simulation environment for electrical-mechanical integrated analysis Application examples Vibrations due to unbalance voltage Wind turbines providing inertial response Conclusions and Future work

5 Introduction Application examples Future work The need for integrated design Lower cost of energy Higher reliability Better integration to the power system Motivation and background The role of integrated dynamic analysis Verification of static design Structural Components Power system requirements Optimization of designs Development of advanced controls Development of simulation tools Extension of simulation domain Interfacing codes for different disciplines Modularity in order to modify sub-models

6 Introduction Application examples Future work Conceptual framework for integrated design Departing from a. preliminary design, and b. defined design constraints and requirements This framework consists in 1. Dynamic Analysis Aeroelasticity Electrical Control 2. Optimization 3. Design verification

7 Introduction Application examples Future work Simulation possibilities using HAWC2 Aeroelastic code HAWC2 -> Shared libraries Forces Hydrodynamics and Soil-dynamics Control External systems interface Inclusion of any dynamic system One solver: strong coupling, numerical robustnest Co-simulation Modularity and flexibility Draws on modeling techniques and simulation tools from different fields Circuit theory of electrical machines Multibody dynamics HAWC2

8 Introduction Application examples Future work Simulation environment using HAWC2 and Matlab/Simulink Software framework Both applications are kept stand-alone Run simultaneously and interact every time-step v y ω, θ p Simulator coupling Non-iterative Matlab/Simulink: variable or fixed time step Applied impact of power system on wind turbine and vice versa F ext, ω 1. Voltage fault analysis 2. Inertial response of wind turbines

9 Introduction Application examples Future work Vibrations in DFIG wind turbine due to unbalance voltage Unbalanced faults happen more often than balanced ones Vibrations are hard to control Electrical control design does not consider wind turbine Integrated analysis model Aeroelastic model of wind turbine (HAWC2) Pitch control Asynchronous machine + control Rotor and Stator fluxes Current and power control of rotor side converter Resonant damping control

10 Introduction Application examples Future work Vibrations in DFIG wind turbine due to unbalance voltage Resonant damping control (solid black line) reduces electrical and structural loads Generator rotor current Tower top side-to-side moment

11 Introduction Application examples Future work Wind turbines providing inertial response Lumped power system model Aggregated wind farm response Wind turbine model Aeroelastic, electrical and control Simulation of sudden loss of power 1. Without wind farm 2. Wind farm with inertial response producing rated power

12 Introduction Application examples Future work Wind turbines providing inertial response Response of wind turbine and power system to a sudden loss of generation Power system frequency Wind turbine torque-speed

13 Introduction Application examples Future work Conclusions Power system conditions and requirements can impose loads on components that need to be assessed in order to optimize design Integrated analysis can facilitate the estimation of the impact that of power system requirements have on wind turbine design and vice versa. Future work Development of load reduction controls Extension of models drive train bed plate models Validation of models with measurements