Results 21 to 30 of about 702,260 (344)

Study of the Effects of Simulation High Voltage Direct Current on the Corrosion of X65 Pipeline Steel in Shanghai Soil [PDF]

open access: yesCailiao Baohu, 2022
In order to study the effects of high voltage direct current (HVDC) grounding pole on the corrosion of pipelines, the corrosion behavior and the variation regularity of corrosion current density of X65 pipeline steel in Shanghai soil with direct current ...
LI De - ming, WANG Hong - xin
doaj   +1 more source

Study of Hybrid Transmission HVAC/HVDC by Particle Swarm Optimization (PSO)

open access: yesEnergies, 2022
There are considerable power losses in Indonesia’s SUMBAGUT 150 kV transmission High Voltage Alternating Current Network (HVAC) system. These power losses and the voltage profile are critical problems in the transmission network system.
Yulianta Siregar, Credo Pardede
doaj   +1 more source

Comparative Evaluation of Voltage Source Converters With Silicon Carbide Semiconductor Devices for High-Voltage Direct Current Transmission

open access: yesIEEE transactions on power electronics, 2021
Recent advancements in silicon carbide (SiC) power semiconductor technology enable developments in the high-power sector, e.g., high-voltage-direct-current (HVdc) converters for transmission, where today silicon (Si) devices are state-of-the-art.
Keijo Jacobs   +4 more
semanticscholar   +1 more source

Wound Healing Using Electrical Stimulation: A Review

open access: yesJournal of Techniques, 2023
The wound healing process is considered one of the most important elements of progress in the health and medical reality alike, because it has a direct impact on the patient’s life, especially those who suffer from chronic diseases such as diabetes ...
Farah Jala Jaseem   +3 more
doaj   +1 more source

Review of protection systems for multi-terminal high voltage direct current grids

open access: yesRenewable & Sustainable Energy Reviews, 2021
Given the current evolution of Voltage Source Converters (VSC), Multi-Terminal High Voltage Direct Current (MTDC) grids are now becoming a real possibility. Still, some technical issues have to be addressed. The protection of High Voltage Direct Current (
M. J. Pérez-Molina   +4 more
semanticscholar   +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

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

Long-Distance Transport of Green Power via High Voltage Direct Current Submarine Cable [PDF]

open access: yesE3S Web of Conferences, 2022
This study aims to perform a technical, environmental, and economic assessment of long-distance transport (around 10000 km) of green power from Australia to Japan through High Voltage Direct Current (HVDC) submarine power cables by literature studies.
Cai Leiqiong   +3 more
doaj   +1 more source

A Novel Relaying Scheme Using Long Short Term Memory for Bipolar High Voltage Direct Current Transmission Lines

open access: yesIEEE Access, 2021
In this paper, a novel relaying scheme is proposed for bipolar line commutated converter (LCC) high voltage direct current (HVDC) transmission lines that detects the fault, identifies the pole of fault and estimates the location of the fault.
A. Swetapadma   +3 more
semanticscholar   +1 more source

Electric Field and Temperature Simulations of High-Voltage Direct Current Cables Considering the Soil Environment

open access: yesEnergies, 2021
For long distance electric power transport, high-voltage direct current (HVDC) cable systems are a commonly used solution. Space charges accumulate in the HVDC cable insulations due to the applied voltage and the nonlinear electric conductivity of the ...
C. Jörgens, M. Clemens
semanticscholar   +1 more source

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