Results 1 to 10 of about 17,685 (234)

Calculation Method of Allowable Continuous Current for Direct Burial Laying HVDC Underground Cable

open access: yesEnergies, 2021
The calculation of the continuous allowable current of an underground cable is determined by various characteristics. To calculate the allowable current in cables with alternating magnetic fields such as AC, special phenomena such as the proximity effect
Kyu-hoon Park, Il Kwon, Bang-wook Lee
doaj   +1 more source

Vegetable oil based liquid nanocomposite dielectric

open access: yesSouth African Journal of Science, 2013
Physically smaller dielectric materials would improve the optimisation of space for power systems. Development of nanotechnology provides an effective way to improve the performances of insulating oils used in power system applications.
Leon Chetty   +2 more
doaj   +1 more source

A Novel Approach to Control Multi Terminal Direct Current Grids under Different Operation Conditions [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2023
Frequency control plays a crucial role in maintaining stability and power equilibrium in Alternative Current (AC) systems, ensuring a balanced distribution between generation and demand.
SEDAGHATI Reza
doaj  

A Multi-infeed HVDC System: Assessment of Transient Overvoltages

open access: yes, 2021
The paper presents an electromagnetic-transient (EMT) analysis of a multi-infeed HVDC cable system in order to assess the transient overvoltages on the cables due to different fault conditions. It is well known that the HVDC-MMC configuration needs surge
S. DAMBONE SESSA   +5 more
core   +1 more source

Study on Burnout Mechanism of TE Board for HVDC Transmission Project Electric Triggered Converter Valve

open access: yesZhongguo dianli, 2020
Thyristor electronic board (TE board) of HVDC converter valve is an important equipment of HVDC converter valve. In the process of operation and maintenance, TE board burned out many times, resulting in the shutdown of the converter valve pole, which ...
Zhen WANG, Kun LIU, Wei JU
doaj   +1 more source

Optimization of the Black-Box Arc Models for DC Current Limiting Circuit Breakers Using Levenberg-Marquardt Algorithm

open access: yesIEEE Access, 2023
The black-box arc model is a tool that facilitates efficient research based on empirical studies in breaker design and analysis. However, its application has primarily focused on the design of ACCBs, with only a few instances of its implementation in the
Kyu-Hoon Park   +2 more
doaj   +1 more source

Capacitor Energy Variations in MMC Using Harmonics Injection

open access: yesPower Electronics and Drives, 2020
Modular multilevel converter (MMC) is considered as a good technology for high-voltage direct current (HVDC) transmission systems. It can generate a good quality staircase output voltage waveform due to the cascaded connection of large number of ...
Hafeez Kamran   +3 more
doaj   +1 more source

Power electronics options for large wind farm integration : VSC-based HVDC transmission [PDF]

open access: yes, 2006
This paper describes the use of voltage source converter based HVDC transmission (VSC transmission) system for grid integration of large wind farms over long distance.
Xu, Lie   +8 more
core   +1 more source

Transient Stability Constrained Optimal Power Flow with FACTS and HVDC [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2021
In power system, the study of optimal power flow (OPF) with transient stability constrained (TSC) of the mixed AC/DC networks is a big and celebrated challenging optimization problem. Because, of its effort and high complexity in its solution, this paper
AYACHI Bilel, BOUKADOUM Ahcene
doaj  

Reducing Operational Costs of Offshore HVDC Energy Export Systems Through Optimized Maintenance

open access: yesEnergies, 2020
For the grid connection of offshore wind farms today, in many cases a high-voltage direct current (HVDC) connection to the shore is implemented. The scheduled maintenance of the offshore and onshore HVDC stations makes up a significant part of the ...
Jan Frederick Unnewehr   +4 more
doaj   +1 more source

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