Wide-Area Damping Control in Power Systems
Summary
Wide-area damping control encompasses coordinated strategies that use geographically dispersed measurements and actuators to suppress low-frequency electromechanical oscillations in large power networks. By drawing on data from phasor measurement units distributed across transmission corridors, these controls adjust generator or converter outputs to counteract inter-area modes that can compromise grid stability. The approach departs from traditional local controllers by exploiting system-wide observability and communications, thereby enabling prompt corrective action in response to disturbances such as line trips, load imbalances or renewable generation fluctuations. Key design challenges include accommodating communication latencies, ensuring cyber-physical security, and managing reduced system inertia as inverter-based resources proliferate. Practical implementations range from event-driven topology adaptation to robust feedback schemes that remain effective under uncertain operating conditions. As power systems evolve towards mixed fleets of synchronous machines and power‐electronic interfaces, wide-area damping control emerges as an essential tool for maintaining oscillatory stability and supporting the reliable integration of low-carbon technologies across continental networks.
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Wide-Area Damping Control in Power Systems publication trend
The graph below shows the total number of articles in wide-area damping control in power systems across all publications each year (not limited to Nature Index journals).
Technical terms
Wide-area damping control: A coordinated control scheme using remote measurements and actuators across a broad geographical area to suppress oscillations in a power system.
Inter-area oscillations: Low-frequency electromechanical swings between groups of generators separated by transmission corridors, which can threaten system stability.
Phasor Measurement Unit (PMU): A device that provides time-synchronised measurements of voltage and current phasors, enabling real-time monitoring of grid dynamics.
Power System Stabilizer (PSS): A local supplementary controller added to generator excitation systems to damp rotor oscillations via feedback of speed or power signals.
Grid-forming converter: A power electronic interface capable of establishing voltage and frequency in a network, emulating synchronous machine behaviour.
Low-inertia power system: A grid in which traditional synchronous generators have been largely replaced by converter-interfaced resources, resulting in reduced stored kinetic energy and faster dynamics.
References
- Wide-Synchronization Control for Power Systems With Grid-Forming Converters. IEEE Transactions on Power Systems (2023).
- Damping of Low-Frequency Oscillations in Power Systems by Large-Scale PV Farms: A Comprehensive Review of Control Methods. IEEE Access (2021).
- Review of Wide-Area Controllers for Supporting Power System Stability. IEEE Access (2023).
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