Control Strategies for Stability in Wind Power Systems
Summary
Wind power integration poses unique challenges to the dynamic stability of modern power grids due to the variable and converter‐interfaced nature of wind turbines. Control strategies have evolved from simple local pitch and torque controllers to sophisticated wide‐area schemes that actively damp electromechanical oscillations and support voltage and frequency regulation. Local control typically centres on the doubly‐fed induction generator (DFIG) converter, using supplementary power oscillation damping loops and adaptive tuning to stabilise rotor speed and grid voltage. At a broader scale, wide-area damping controllers (WADCs) harness phasor measurements to coordinate multiple wind farms and grid assets, mitigating inter‐area oscillations across vast transmission networks. Advanced techniques such as sliding mode control, fractional-order control and energy‐based observers enhance robustness under uncertainty and disturbance. Power electronic devices like voltage source converters (VSCs), unified power flow controllers (UPFCs) and static synchronous compensators (STATCOMs) are integrated to modulate active and reactive power, offering fast dynamic support. Moreover, co-ordinated control of offshore wind farms and onshore high-voltage direct current (HVDC) links enables seamless oscillation damping while minimising voltage excursions. Collectively, these strategies underpin reliable, high-penetration wind systems, ensuring grid resilience and paving the way for a decarbonised energy future.
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Control Strategies for Stability in Wind Power Systems publication trend
The graph below shows the total number of articles in control strategies for stability in wind power systems across all publications each year (not limited to Nature Index journals).
Technical terms
Doubly-Fed Induction Generator (DFIG): A wind turbine generator with rotor-side and grid-side converters that enables control of active and reactive power independently.
Wide-Area Damping Controller (WADC): A control scheme using synchrophasor measurements from dispersed locations to coordinate damping of inter-area oscillations.
Voltage Source Converter (VSC): A power electronic interface that regulates voltage, frequency and power flow in grid-connected systems.
Unified Power Flow Controller (UPFC): A flexible AC transmission device capable of controlling voltage, impedance and phase angle to enhance stability.
Small-Signal Stability: The ability of a power system to maintain synchronism under small disturbances, often assessed via eigenvalue analysis.
References
- Online damping control of power system with LME function of wind farm. Results in Engineering (2023).
- Coordinated Control of Offshore Wind Farm and Onshore HVDC Converter for Effective Power Oscillation Damping. IEEE Transactions on Power Systems (2017).
- A robust composite wide area control of a DFIG wind energy system for damping inter-area oscillations. Protection and Control of Modern Power Systems (2020).
- Evaluation of Technical Solutions to Improve Transient Stability in Power Systems with Wind Power Generation. Energies (2022).
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