Results 31 to 40 of about 21,810 (200)

An on-line power/voltage stability index for multi-infeed HVDC systems

open access: yesJournal of Modern Power Systems and Clean Energy, 2019
High-voltage direct current (HVDC) transmission is playing an increasingly important role in modern power systems, and the resulted power/voltage stability issue has raised widespread concern. This paper presents an on-line power/voltage stability index (
Jian Xu   +7 more
doaj   +1 more source

Operation and Challenges of Multi-Infeed LCC–HVDC System: Commutation Failure, AC/DC Power Flow, and Voltage Stability

open access: yesApplied Sciences, 2021
This paper presents a detailed analysis of commutation failure, AC/DC power flow, and voltage stability of multi-infeed high-voltage direct current (HVDC). The use of HVDC power transmission technology has become common in modern power systems.
Bilawal Rehman   +4 more
doaj   +1 more source

Modular multilevel converter losses model for HVdc applications [PDF]

open access: yes, 2017
Multi-terminal high voltage dc (HVdc) grids can eventually became a feasible solution to transport energy to remote and/ or distant areas and its exploitation depend, among other things, on the performance of the converter terminals.
Antonio Ferreira, Abel   +1 more
core   +2 more sources

Cyber Security of HVDC Systems: A Review of Cyber Threats, Defense, and Testbeds

open access: yesIEEE Access
High Voltage Direct Current (HVDC) technology is one of the key enablers of the energy transition, especially for offshore wind energy systems. While extensive research on cyber security of High Voltage Alternating Current (HVAC) systems has been ...
Alfan Presekal   +7 more
doaj   +1 more source

Monitoring Technologies for HVDC Transmission Lines

open access: yesEnergies, 2023
HVDC transmission systems are becoming more prevalent because of the advantages they offer. They are more efficient and environmentally friendly and are becoming preferred in distributed power generation. The reliable operation of HVDC transmission lines
Jeff Laninga   +4 more
doaj   +1 more source

System Identification of Classic HVDC Systems

open access: yesSAIEE Africa Research Journal, 2011
Determining models from observations and studying the models' properties is essentially the functionality of science. Models attempt to link observations into some pattern. System identification is the art of building mathematical models of dynamic systems based on observed data from the systems.
L. Chetty, N.M. Ijumba
openaire   +1 more source

Power balancing and dc fault ride through in DC grids with dc hubs and wind farms [PDF]

open access: yes, 2015
Acknowledgment This project was funded by European Research Council under the Ideas program in FP7; grant no 259328, 2010.Peer ...
Jovcic, Dragan, Lin, Weixing
core   +1 more source

Modeling and enhanced control of hybrid full bridge–half bridge MMCs for HVDC grid studies [PDF]

open access: yes, 2020
Modular multilevel converters (MMCs) are expected to play an important role in future high voltage direct current (HVDC) grids. Moreover, advanced MMC topologies may include various submodule (SM) types. In this sense, the modeling of MMCs is paramount
Forner, Jaume, Vidal-Albalate, Ricardo
core   +1 more source

Strategy for Suppressing Commutation Failures in High-Voltage Direct Current Inverter Station Based on Transient Overvoltage

open access: yesEnergies
Commutation failures in high-voltage direct current (HVDC) transmission systems often occur within inverter stations, posing challenges to the safe and consistent operation of HVDC transmission projects.
Dandan Zhao   +5 more
doaj   +1 more source

Chance-Constrained AC Optimal Power Flow Integrating HVDC Lines and Controllability

open access: yes, 2019
The integration of large-scale renewable generation has major implications on the operation of power systems, two of which we address in this work.
Barre, Adelie   +4 more
core   +1 more source

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