Electric Power Transfer Ac Network TRIZ Cases
- Converter Submodule Health Monitoring via Group Deviation Analysis
Uses existing voltage and current data to compare matching converter or ESS components and flag health deviations without extra sensors.
- HVDC Interconnection Control for Safe Switch Disconnection
Supplementary HVDC voltage control drives interconnection current below a threshold, enabling safe switch opening without disrupting power exchange.
- Voltage Sourced Converter Fault Current Phase-Angle Control
By matching injected fault current phase to pre-fault conditions, this case improves AC network fault detection in HVDC converter links.
- Bipole HVDC Converter Control for Neutral Current Balancing
Droop-based residual voltage references let bipole HVDC converters balance neutral current during asymmetry and contingencies without central control.
- Hierarchical BMS Software Updates Without Monitoring Interruptions
A master-slave BMS structure updates control programs by target and version without stopping battery monitoring or requiring site visits.
- HVDC Network Interconnection for Multi-Grid Power Flow Control
A converter station, interconnection bus, and regulators coordinate power across multiple grids to ease congestion and handle varying voltages.
- HVDC Frequency Coordination for Seasonal Asynchronous Power Grids
Coordinated VSC-HVDC, LCC-HVDC, and renewable controls stabilize frequency across asynchronous power grids in wet and dry seasons.
- HVDC Frequency Coordination Using VSC Sync and LCC Limit Control
Coordinated VSC-HVDC and LCC-HVDC control stabilizes grid frequency after disturbances while supporting voltage with reactive power.
- Flexible DC Power Flow Model for Control Strategy Switching
A unified flexible DC power flow model switches control strategies and main converter stations to improve convergence and calculation reliability.
- Capacitive Fault Detection in Moving-Object Power Supply Circuits
A shared capacitor-based detection circuit identifies ground faults and wire short circuits without undermining power supply reliability.
- MMC-HVDC Battery Control for DC-Link Overvoltage During Faults
A local battery control scheme absorbs surplus wind and solar power during AC faults to stabilize HVDC voltage without braking resistors.
- Multi-Converter Power Supply Layout for Redundant Data Center Loads
Directly combining multiple power lines at the load cuts connection-unit losses and cost while maintaining backup power through converters and storage.
- DC Circuit Breaker Reclosing Using Resonance and Semiconductor Switching
A two-stage DC breaker combines resonance current zero formation with semiconductor switching to enable immediate breaking and fast reclosing.
- HVDC Commutation Failure Prediction Using Risk Factor and Future States
By combining present and future commutation states, this case predicts HVDC commutation failure earlier to support timely prevention.
- VSC-HVDC Frequency Synchronization With Hydro Primary Regulation
A two-layer optimization model tunes VSC-HVDC PI and hydropower PID control to balance response speed and prevent grid frequency overcompensation.
- Hybrid Circuit Breaker Cooling for Faster High-Current Commutation
Active cooling of bypass-switch movable parts speeds commutation, cuts semiconductor stress, and raises current capacity without bulk.
- Hybrid DC Circuit Breaker for Fast Reclosing and Immediate Breaking
A two-stage breaker combines resonance current zero formation with semiconductor switching to restore HVDC power quickly after faults.
- Offshore Wind Turbine Grid-Forming Control for Stable AC Voltage
Active and reactive power are used to regulate AC voltage and frequency, keeping offshore wind turbines synchronized through startup, fluctuations, and faults.