Results 1 to 10 of about 366,693 (304)

High voltage direct current (HVDC) transmission: Future expectation for Pakistan

open access: yesCSEE Journal of Power and Energy Systems, 2019
An HVDC transmission system for bulk power transfer over longer distance offers numerous advantages over an alternating current (AC) transmission system, such as direct integration of networks operating at different frequencies, comparatively low line ...
Kamran Hafeez, Shahid A. Khan
doaj   +2 more sources

Research on over-voltage characteristics of ultra high-voltage direct current transmission system

open access: yesEnergy Reports, 2022
Load dumping overvoltage has a significant effect on insulation coordination of direct current (DC) transmission system. Based on the PSCAD/EMTDC electromagnetic transient simulation programs, this paper has built the electromagnetic transient ...
Yingjin Li   +6 more
doaj   +1 more source

Stand-Alone Direct Current Power Network Based on Photovoltaics and Lithium-Ion Batteries for Reverse Osmosis Desalination Plant

open access: yesEnergies, 2021
Plummeting reserves and increasing demand of freshwater resources have culminated into a global water crisis. Desalination is a potential solution to mitigate the freshwater shortage. However, the process of desalination is expensive and energy-intensive.
Vishwas Powar, Rajendra Singh
doaj   +1 more source

DC‐presaturated fault current limiter for high voltage direct current transmission systems

open access: yesHigh Voltage, 2021
The authors present a 500 kV real‐dimension DC‐presaturated fault current limiter (PFCL) with a steady‐state rated current of 2 kA for limiting large fault current of 8 kA with high rate of rise. These characteristics of the fault current can be a threat
Mohamed Eladawy   +2 more
doaj   +1 more source

S-Transform Based Traveling Wave Directional Pilot Protection for Hybrid LCC-MMC-HVDC Transmission Line

open access: yesEnergies, 2022
In this paper, the traveling wave protection issue of a hybrid high-voltage direct-current transmission line based on the line-commutated converter and modular multilevel converter is investigated.
Wei Zhang, Dong Wang
doaj   +1 more source

Experimental study on fault ride-through capability of VSC-based HVDC transmission system [PDF]

open access: yesArchives of Electrical Engineering, 2021
For voltage-source-converter based high-voltage-direct-current (VSC-HVDC) transmission systems, fault ride-through (FRT) capability is a very important grid requirement in order to enhance its operational availability under an alternating current (AC ...
Ngo Minh Khoa   +2 more
doaj   +1 more source

Cooperative Voltage and Frequency Regulation with Wind Farm: A Model-Based Offline Optimal Control Approach

open access: yesEnergies, 2023
Converter blocking is a serious malfunction encountered in high voltage direct current (HVDC) transmission systems. During sending-end converter blocking, the resultant active power and reactive power surplus in the sending-end power system lead to a ...
Hua Li   +5 more
doaj   +1 more source

Effects of Conditional Changes on High-Voltage Direct Current Transmission Line Characteristic

open access: yesJournal of Electrical and Computer Engineering, 2022
The high-voltage direct current (HVDC) transmission system, which links the Gurun Substation of the National Electric Authority of Malaysia (Tenaga Nasional Berhad, TNB) with the Khlong Ngae Station of the Electricity Generating Authority of Thailand ...
Chaichan Pothisarn   +6 more
doaj   +1 more source

An Overview of HVDC Technology

open access: yesEnergies, 2020
There is a growing use of High Voltage Direct Current (HVDC) globally due to the many advantages of Direct Current (DC) transmission systems over Alternating Current (AC) transmission, including enabling transmission over long distances, higher ...
Neville R. Watson, Jeremy D. Watson
doaj   +1 more source

Calculating the Interface Flow Limits for the Expanded Use of High-Voltage Direct Current in Power Systems

open access: yesEnergies, 2020
Although loads are increasingly becoming concentrated in metropolitan areas, power generation has decreased in metropolitan areas and increased in nonmetropolitan areas; hence, power transmission must occur through interface lines.
Sangwook Han
doaj   +1 more source

Home - About - Disclaimer - Privacy