An AC fault ride-through control of modular multilevel converters for HVDC systems
This paper proposes a modified threshold virtual impedance control to ensure an AC fault ride-through for modular multilevel converters.
Options for mitigating converter blocking during clearance of DC faults
The Network DC project aims to advance industry readiness to deploy DC Circuit Breakers (DCCBs) and develop offshore HVDC networks.
Study of internal faults in the solid-state switch transfer branch for modularised hybrid DC circuit breakers
This paper studies the effects of internal faults in hybrid DCCBs, which appear as a leading technology with installed units operating at 535 kV and breaking current capabilities of 25 kA.
Impact of MMC temporary blocking functionality on DC grid protection design
This paper presents a DC grid protection design principle considering MMCs feature temporary blocking capability.
Enhancing AC line emulation controls for improved inter-area oscillation damping and application to multi-terminal DC grids
By emulating AC line behavior, HVDC systems can adjust active power flows in real-time, improving system performance during contingencies.
Contributions to DC fault ride-through in MTDC grids with MMC stations in grid-forming control considering impacts on AC system stability
DC faults in High Voltage Direct Current (HVDC) systems can significantly impact AC grid stability, especially in MTDC grids.
Addressing intra-area oscillations and frequency stability after DC segmentation of a large AC power system
This paper studies the use of DC segmentation with HVDC systems based on VSC-HVDC with active and reactive power supplementary controllers in the converter stations.
Active voltage balancing by turn-off delays regulation for multiple series-connected SiC MOSFETs
An active voltage balancing approach for a stack of N SiC MOSFETs, achieved through precise adjustment of turn-off delays based on real-time voltage feedback.
Standardized Model Exchange of HVDC Equipment for RMS and EMT Simulations
This paper provides an insight into the research activities held in the HVDC-WISE project towards creation of a public library of models of HVDC equipment, based on IEC CIM standards.
A Novel Empiric Model-Based Classification Algorithm for Fault Detection in DC Railway Systems
This paper proposes a new advanced Fault Detection Algorithm (FDA) capable of overcoming the limitations of the protection system nowadays deployed in DC railways systems.
