Results 11 to 20 of about 3,256 (205)

Voltage Source Converter–Based Voltage Stiffness Compensator to Improve Grid Voltage Dynamics

open access: yesFrontiers in Energy Research, 2022
This study proposes a novel voltage source converter (VSC)-based voltage dynamic regulatory device based on energy storage and virtual synchronous control, called as a rotating inertia and voltage stiffness compensator (RIVSC), to enhance grid voltage ...
Lei Shang   +4 more
doaj   +1 more source

Experimental Study on the Catalyst-Coated Membrane of a Proton Exchange Membrane Electrolyzer

open access: yesEnergies, 2022
Proton exchange membrane (PEM) technology may regulate the electrical grid connected to intermittent power sources. The growing pace of R&D in alternative components is widening manufacturing methods and testing procedures across the literature.
Amadeu Gomes Rocha   +3 more
doaj   +1 more source

Open‐phase temporary overvoltage before and after an intermediate subsation accessing a long distance transmission line

open access: yesIET Generation, Transmission & Distribution, 2021
In transmission lines, shunt‐reactors are commonly applied to counteract the “Ferranti effect.” However, in highly compensated lines, hazardous overvoltage may occur during unbalanced open‐phase conditions.
Chen Xiaoyue   +6 more
doaj   +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

Comprehensive Analysis of Transient Overvoltage Phenomena for Metal-Oxide Varistor Surge Arrester in LCC-HVDC Transmission System with Special Protection Scheme

open access: yesEnergies, 2022
This paper proposes a systematic and deterministic method for metal-oxide varistor (MOV) surge arrester selection based on the comprehensive analysis in line-commutated converter (LCC)-based high-voltage direct current (HVDC) transmission systems.
Jaesik Kang
doaj   +1 more source

VICARED: A Neural Network Based System for the Detection of Electrical Disturbances in Real Time [PDF]

open access: yes, 2005
The study of the quality of electric power lines is usually known as Power Quality. Power quality problems are increasingly due to a proliferation of equipment that is sensitive and polluting at the same time.
Elena Ortega, José Manuel   +4 more
core   +1 more source

Adaptive sequential reclosing strategy for hybrid HVDC circuit breakers in MMC‐based DC grids

open access: yesHigh Voltage, 2022
DC circuit breaker (DCCB) is one of the most promising solutions for handling DC fault in half‐bridge modular multilevel converter (MMC)‐based DC grid.
Jingqiu Yu, Zheren Zhang, Zheng Xu
doaj   +1 more source

The Effects of Transient Overvoltages on the Reliability of HVDC Extruded Cables. Part 1: Long Temporary Overvoltages

open access: yesIEEE Transactions on Power Delivery, 2021
Extensive simulations have been carried out of transient voltages superimposed onto the DC voltage of HVDC cable transmission systems. With the advent of VSC HVDC cable systems, attention has turned to long Temporary Overvoltages in such systems. Preliminary experiments on the possible adverse effects of these long TOVs on the insulation of VSC HVDC ...
Mazzanti G., Diban B.
openaire   +2 more sources

Temporary overvoltage duty of surge arresters in noneffectively grounded systems

open access: yesElectrical Engineering in Japan, 1997
Important characteristics of metal oxide surge arresters depend on the specified temporary overvoltage duty requirement due to the volt–ampere characteristics. However, there are few reports on the duty of surge arresters in noneffectively grounded systems.
Kouiti Nakahito   +7 more
openaire   +2 more sources

Modular multilevel converter with modified half-bridge submodule and arm filter for dc transmission systems with DC fault blocking capability [PDF]

open access: yes, 2018
Although a modular multilevel converter (MMC) is universally accepted as a suitable converter topology for the high voltage dc transmission systems, its dc fault ride performance requires substantial improvement in order to be used in critical ...
Abdelsalam, Ibrahim A.   +3 more
core   +2 more sources

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