Power Oscillations Reduction/Prevention TRIZ Cases
- IED Detection of Sub-Synchronous Oscillations in Power Grids
IEDs track non-harmonic sub-synchronous frequencies, locate their source direction, and trigger load mitigation to keep power grids stable.
- Meshed Network Fault Location Using Line Trees and Fault Detectors
By tracing meshed networks into line trees and detector-equipped paths, faults can be located with less engineering effort and cost.
- Power System Stabilizer Tuning for Low-Frequency Oscillation Damping
Real-time PSS tuning uses clustering, deep learning, and whale optimization to damp low-frequency oscillations and stabilize power networks.
- DFIG Rotor Current Damping for Sub-Synchronous Oscillation Control
A stator-current-based damping command offsets negative resistance in DFIG inverter resources to suppress sub-synchronous grid oscillations.
- Adaptive Power System Stabilizer Tuning for Low-Frequency Oscillations
Fuzzy clustering, deep learning, and whale optimization tune PSS parameters in real time to damp low-frequency grid oscillations.
- Wide-Area Oscillation Damping Control for Low-Inertia Power Grids
Distributed frequency sensing estimates center-of-inertia speed to damp local and inter-area oscillations in low-inertia power grids.
- Power Converter Signal Transition Tuning for Voltage Ringing
Adjusting rise and fall times in a tuning loop cuts switch-node voltage ringing and EMI without the usual efficiency penalty in power converters.
- Hybrid Distribution Transformer Control for DC Magnetic Bias Suppression
Nonlinear excitation current feedback suppresses DC magnetic bias in hybrid distribution transformers without added flux sensors.
- VOC Inverter Active Filtering for Grid Harmonic Suppression
Active filtering with a VOC inverter suppresses grid harmonics without phase-locked loops, cutting calculation burden and improving stability.
- Grid-Connected Inverter Vector Synchronization for Small-Signal Stability
d-q axis current compensation stabilizes grid-connected inverters across control strategies without extra equipment or major redesign.
- Multiphase AC Voltage Estimation for Stable Power Control
An iterative time-domain estimator derives radius and phase angles without rotating-frame transforms, improving AC network stability and power quality.
- Inverter Reactive Power Control for Volt-Var Instability
Reactive power commands are monitored for oscillations, then volt-var gains are reduced to keep inverter-based wind farms stable.
- Grid-Forming Inverter Nonlinear Droop Control for Frequency Stability
A nonlinear Droop-e response lets grid-forming inverters deliver more power with smaller frequency deviations and better grid stability.
- Timing Reliability in Wide Area Power Control
A timing deviation handling unit evaluates time stamp accuracy for wide area power transmission synchronization.