Results 21 to 30 of about 249,891 (224)

Voltage Correlation Based Single Pole-to-Ground Fault Detection of MMC-HVDC Transmission Line

open access: yesIEEE Access, 2021
Through analysis of various fault voltage characteristics of modular multilevel converter high voltage direct current (MMC-HVDC) transmission system, it shows that the positive and negative voltage relationships of direct current transmission lines with ...
Na An   +5 more
doaj   +1 more source

Single-end Protection Scheme Based on Transient Power Waveshape for Hybrid HVDC Transmission Lines

open access: yesJournal of Modern Power Systems and Clean Energy, 2023
The recent in-depth development of hybrid high-voltage direct current (HVDC) transmission systems poses looming adaptability challenges to protection.
Feiyang Dai, Zexin Zhou, Xingguo Wang
doaj   +1 more source

Shot noise of inelastic tunneling through quantum dot systems [PDF]

open access: yes, 2004
We present a theoretical analysis of the effect of inelastic electron scattering on current and its fluctuations in a mesoscopic quantum dot (QD) connected to two leads, based on a recently developed nonperturbative technique involving the approximate ...
Bing Dong   +5 more
core   +1 more source

Finite bias visibility of the electronic Mach-Zehnder interferometer [PDF]

open access: yes, 2007
We present an original statistical method to measure the visibility of interferences in an electronic Mach-Zehnder interferometer in the presence of low frequency fluctuations.
Cavanna, A.   +7 more
core   +1 more source

Model parameter identification for scaled-down analogous HVDC transmission lines using broad spectral response analysis

open access: yesEnergy Reports, 2022
Traditional analogous π-shape transmission line models are mainly designed based on the amplitude and phase response characteristics of the distributed-parameter transmission lines at the power frequency.
Jinrui Tang   +4 more
doaj   +1 more source

Protection scheme for high‐voltage direct‐current transmission lines based on transient AC current

open access: yesIET Generation, Transmission & Distribution, 2015
This study presents a new protection scheme for high‐voltage direct‐current (HVDC) transmission lines which only uses a specific frequency AC current (SFAC) at one of the line terminals during fault transients. The fluctuation characteristic of the root mean square (RMS) of SFAC is analysed under different fault conditions.
Jian Liu   +3 more
openaire   +1 more source

Method for calculating corona inception voltage of ultra‐high‐voltage direct current transmission lines with frequency‐domain characteristics of corona current

open access: yesIET Generation, Transmission & Distribution, 2017
Corona inception voltage is of great significance for the design of ultra‐high‐voltage direct current transmission lines. In this study, based on the change rule of frequency‐domain characteristics of corona current, a new method for calculating corona ...
Yingyi Liu   +4 more
doaj   +1 more source

Network Coordination between High-Voltage DC and High-Voltage AC Transmission Systems Using Flexible AC Transmission System Controllers

open access: yesEnergies, 2022
The strategic intent of the African Union is to develop a “Smart Integrated African Electric Power Super Grid” driven by modern tools and advances in high-voltage direct current (HVDC) engineering and flexible alternating current technology systems ...
Nomihla Wandile Ndlela   +1 more
doaj   +1 more source

Topology assessment for 3 + 3 terminal offshore DC grid considering DC fault management [PDF]

open access: yes, 2014
Peer ...
Jovcic, Dragan   +3 more
core   +1 more source

HVDC Transmission Line Fault Identification: A Learning Based UAV Control Strategy

open access: yesIEEE Access, 2022
Electricity Transmission plays an imperative role in smooth provision of power to the consumers. High voltage direct current (HVDC) system has a lead over high voltage alternate current (HVAC) system in various aspects. As DC transmissions lines transmit
Waheed A. Khan   +6 more
doaj   +1 more source

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