Results 101 to 110 of about 2,067 (225)

HVAC/HVDC strategy for solving power delivery shortages to a localised area of a national grid

, 2010
Conference PaperThe industrial and population growth can cause power delivery problems to a localised area of a national grid. One reason for these power shortages is the insufficient current carrying capacity of existing HVAC transmission line ...
Atkinson-Hope, Gary, J. Smith, G. Atkinson-Hope, Stemmet, W. C, Smith, J, W.C. Stemmet   +5 more
core   +1 more source

Line fault location in emerging HVDC transmission systems

, 2014
The current technology used for location of permanent faults in high voltage direct current (HVDC) transmission lines and cables is based on the travelling-wave principle.
Nanayakkara, Obada Mudalige Kasun Kavinda
core  

Improvement of voltage stability by using VSC-HVdc

, 2009
This paper analyzes and compares the stability of a power system when either a new ac transmission line or a dc link based on VSCs is connected in the grid.
Latorre, Hector F.,, Ghandhari Alavijh, Mehrdad,, H.F. Latorre, M. Ghandhari   +3 more
core   +1 more source

Study on the operating performance of HVDC transmission line protection and its improved algorithm [PDF]

, 2015
LAUREA MAGISTRALERispetto alla tecnologia AC, la trasmissione in “corrente continua ad alta tensione” (HVDC) presenta una netta superiorità nel trasporto di potenza elevata, su elevate distanze e nella flessibilità della regolazione.
XIE, LINHONG
core  

HVDC: New Opportunities to Expand Transmission Capacity

, 2020
Decarbonizing the electricity sector, which today accounts for 27% of the US carbon footprint, will require connecting low and no carbon resources to the grid while still meeting growing demand.
Reed, Liza B.
core  

Application of Time-Frequency Analysis with Selection of Suitable Mother Wavelets for Transient States of HVDC Transmission Lines

Sir Syed University Research Journal of Engineering and Technology, 2023
Recent developments in power semiconductor devices have made High Voltage Direct Current (HVDC) transmission systems the most crucial technology for future power systems. Today several HVDC projects have been commissioned around the world.
Muhammad Tarique Chachar, Aslam Pervez Memon, Jamshed Ahmed Ansari   +2 more
doaj  

Space charges and life models for lifetime inference of HVDC cables under voltage polarity reversal

, 2019
HVDC cables connected to Current Source Converters are subjected to polarity reversal when the HVDC intertie changes the power flow. Mass Impregnated Non-Draining cables had been using since the dawn of HVDC transmission with Current Source Converters ...
Antonio Battaglia, Giovanni Mazzanti, Massimo Marzinotto, Marzinotto M., Battaglia A., Mazzanti G.   +5 more
core   +1 more source

Power converter fault analysis in hvdc transmission line

, 2021
Nüfus artışı, büyüyen kentler, artan enerji talebi ve artan çevre sorunları enerji iletim sistemlerinin yetersiz kalmasına yol açmaktadır. Özellikle yoğun nüfuslu bölgelerde yeni HVAC iletim hatlarının yapılması için yeterli alanı bulmak giderek zorlaşmaktadır.
openaire   +2 more sources

Protection Configuration and Scheme for the Transmission Line of VSC-HVDC Grid

, 2018
Voltage-sourced converter(VSC) based high voltage direct current(HVDC) grid can absorb large-scale renewable energy flexibly. But because of its small inertia, a fault in the VSC-HVDC grid will spread rapidly and fault current will increase quickly ...
Dong, Q, Shi, S, Wang, B, Coombs, T, ,, Tang, L, Dong, X   +6 more
core  

Rapid Fault Diagnosis of a Back-to-Back MMC-HVDC Transmission System under AC Line Fault

, 2018
The integration of a modular multilevel converter-based high-voltage direct current (MMC-HVDC) transmission system in power networks has led to a high requirement for the rapidity of fault recognition.
Xiaobing Liao, Kaipei Liu, Liang Qin, Shu Zhu, Qing Huai, Yuye Li, Kun Wang, Hua Ding, Jian Le   +8 more
core   +1 more source