Results 91 to 100 of about 1,710 (215)

Traveling Wave Current Polarity Comparison Protection Using Wavelet Modulus Maxima for HVDC Transmission Lines

open access: yes, 2011
ABB and SIEMENS schemes based on the voltage change rate are the existing main protection for HVDC transmission lines. But the analysis and simulation tests show that these protection schemes may be unreliable as high impedance faults or as disturbances ...
Jian Dong Duan, Lin An, Wen Lu
core   +1 more source

Numerical Analysis of Ion Flow in One-Bipole HVDC Transmission Line Using Revised Charge Injection Methods

open access: yesIEEE Access
In the evolving field of electric power transmission networks, high-voltage direct current (HVDC) transmission has garnered attention for its efficacy in long-distance power delivery.
Minhee Kim, Se-Hee Lee
doaj   +1 more source

Development of a Wireless Sensor Network for Distributed Measurement of Total Electric Field under HVDC Transmission Lines

open access: yesInternational Journal of Distributed Sensor Networks, 2014
A wireless sensor network-based distributed measurement system is designed for collecting and monitoring the electric field under the high voltage direct current (HVDC) transmission lines.
Yong Cui   +5 more
doaj   +1 more source

Rating methodology of high voltage mass impregnated DC cable circuits

open access: yes, 2014
With the continuing growth in energy consumption worldwide, the move towards a European wide super grid will result in significant changes in how modern transmission and distribution networks are operated.
Huang, Ziyi
core  

Minimum Frequency and Voltage Stability Constrained Unit Commitment for AC/DC Transmission Systems

open access: yesApplied Sciences, 2019
An increased use of the high-voltage direct current (HVDC) technologies can have important effects on frequency performance and voltage stability of the receiving-end grid during normal operation as well as during blocking failure.
Ningyu Zhang, Qian Zhou, Haoming Hu
doaj   +1 more source

A Post-Contingency Power Flow Control Strategy for AC/DC Hybrid Power Grid Considering the Dynamic Electrothermal Effects of Transmission Lines

open access: yesIEEE Access, 2019
The blocking of large-capacity HVDC or the tripping of AC transmission lines by accident will cause power flow transfer sharply and increase the risk of cascading faults in AC/DC hybrid power grid.
Jian Hu   +3 more
doaj   +1 more source

Improvement of fault critical time by HVDC transmission

open access: yes, 2011
International audienceThis paper investigates the impact of High Voltage Direct Current (HVDC) transmission on the transient stability of a two-machine power system, considering three transmission line configurations: parallel HVAC-HVAC, parallel HVDC ...
Marinescu, Bogdan   +8 more
core   +1 more source

HVDC: New Opportunities to Expand Transmission Capacity

open access: yes, 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  

Cost-benefit analysis of HVDC transmission system [PDF]

open access: yes, 2017
U ovom diplomskom radu opisana je visokonaponska istosmjerna tehnologija prijenosa električne energije (HVDC). HVDC sustavi počeli su se instalirati zbog velikog napretka elektronike, pomoću koje se smanjila cijena pretvaračkih stanica, a time i samih ...
Marijanović, Domagoj
core  

Effects of VSC based HVDC system on distance protection of transmission lines

open access: yes, 2017
The priority to reactive power contribution from the Voltage Source Converter (VSC) based High Voltage Direct Current (HVDC) connection to support the grid during faults as suggested by the modern Network Code (NC) for HVDC affects the distance ...
Alam, Mohammad Meraj   +7 more
core   +1 more source

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