Results 31 to 40 of about 23,066,399 (295)

HVDC grids stability improvement by direct current power system stabilizer

open access: yesIET Generation, Transmission & Distribution, 2022
High‐voltage direct current breaker is among the essential components of high‐voltage direct current grids. Such a breaker generally needs a direct current reactor to reduce the fault currents rate.
Neda Azizi   +2 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

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

Optical fiber imaging for high speed plasma motion diagnostics: applied to low voltage circuit breakers [PDF]

open access: yes, 2010
An integrated portable measurement system is described for the study of high speed and high temperature unsteady plasma flows such as those found in the vicinity of high current switching arcs.
Tribulato, G.   +9 more
core   +1 more source

Review of high voltage direct current cables [PDF]

open access: yesCSEE Journal of Power and Energy Systems, 2015
Increased renewable energy integration and international power trades have led to the construction and development of new HVDC transmission systems. HVDC cables, in particular, play an important role in undersea power transmission and offshore renewable energy integration having lower losses and higher reliability. In this paper, the current commercial
Chen, George   +5 more
openaire   +2 more sources

Design of ± 535 kV hybrid high voltage direct current (HVDC) circuit breaker

open access: yesIET Generation, Transmission & Distribution, 2022
This paper proposes a ± 535 kV hybrid high voltage direct current (HVDC) circuit breaker. In this paper, the interruption processes of the main branch, transferring branch, and MOV (metal oxide varistors) branch are studied by PSCAD/EMTDC computer ...
Chenyang Liu   +4 more
doaj   +1 more source

Research on Thyristor Reverse Recovery Behavior in High-Voltage Direct Current Transmission Converter Valves and Its Application in Integrated Protection Systems

open access: yesEnergies
The performance of converter valves is essential for the reliability and efficiency of high-voltage direct current (HVDC) transmission systems. Converter valves consist of multiple thyristor levels, each requiring regular testing to ensure proper ...
Cao Wen   +7 more
doaj   +1 more source

Overview of Various Voltage Control Technologies for Wind Turbines and AC/DC Connection Systems

open access: yesEnergies, 2023
Wind power generation is one of the mainstream renewable energy resources. Voltage stability is as important as the frequency stability of a power system with a high penetration of wind power generation.
Yuan-Kang Wu   +2 more
doaj   +1 more source

QR-DESO-Based Active Disturbance Rejection Control for PMSGs Under Aperiodic and Periodic Disturbances

open access: yesMachines
Permanent magnet synchronous generators (PMSGs) are inevitably subject to aperiodic and periodic disturbances due to complex operating conditions and internal coupling effects.
Junpeng Cheng   +6 more
doaj   +1 more source

The Interest of the Wind Farm of Adrar to the Southwest Network of Algeria [PDF]

open access: yesIranica Journal of Energy and Environment, 2019
The interest in renewable energy has been increasing over the last few years, especially after global awareness regarding the hazardous effect of fossil fuel burning.
G. Hocine   +3 more
doaj   +1 more source

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