Assessment of Grid-Connected Wind Turbines with an Inertia Response by Considering Internal Dynamics
Open Access
- 26 February 2020
- Vol. 13 (5), 1038
- https://doi.org/10.3390/en13051038
Abstract
This paper presents a small-signal analysis of different grid side controllers for full power converter wind turbines with inertia response capability. In real wind turbines, the DC link controller, the drivetrain damping controller and the inertial response might present contradictory control actions in a close bandwidth range. This situation might lead to reduced control performance, increased component stress and non-compliance of connection agreements. The paper presents an analysis of the internal wind turbine dynamics by considering different grid-side converter control topologies: standard current control used in the wind industry, standard current control with inertia emulation capabilities and virtual synchronous machines. Comments are made on the similarities between each topology and the negative effects and limits, and possible remedies are discussed. Finally, the conclusion poses that the inclusion of a DC link voltage controller reduces the ability of a converter to respond to external frequency events without energy storage. The degradation increases with the DC link voltage control speed.Funding Information
- Engineering and Physical Sciences Research Council (Student Excellence Award)
This publication has 17 references indexed in Scilit:
- Microgrid control based on a grid-forming inverter operating as virtual synchronous generator with enhanced dynamic response capabilityInternational Journal of Electrical Power & Energy Systems, 2017
- Instantaneous penetration level limits of non‐synchronous devices in the British power systemIET Renewable Power Generation, 2017
- Inertia Provision and Estimation of PLL-Based DFIG Wind TurbinesIEEE Transactions on Power Systems, 2016
- A Virtual Synchronous Machine implementation for distributed control of power converters in SmartGridsElectric Power Systems Research, 2015
- Self-Tuning Virtual Synchronous Machine: A Control Strategy for Energy Storage Systems to Support Dynamic Frequency ControlIEEE Transactions on Energy Conversion, 2014
- A Strategy for Real Power Control in a Direct-Drive PMSG-Based Wind Energy Conversion SystemIEEE Transactions on Power Delivery, 2013
- Inertia Emulation Control Strategy for VSC-HVDC Transmission SystemsIEEE Transactions on Power Systems, 2012
- Influence of rotor structural dynamics representations on the electrical transient performance of FSIG and DFIG wind turbinesWind Energy, 2007
- Comparative study on transient stability analysis of wind turbine generator system using different drive train modelsIET Renewable Power Generation, 2007
- Inertial response of variable speed wind turbinesElectric Power Systems Research, 2006