Results 31 to 40 of about 11,006 (219)

Proposing a Rule for VSC-HVDC Optimal Placement to Improve Transient Stability of Power System [PDF]

open access: yesInternational Journal of Research and Technology in Electrical Industry
Transient stability indicates the system's ability to dampen the rotor oscillations of synchronous generators after severe faults. The transient instability causes considerable damage to the generator and reduces the production capacity in the network ...
Ali Abrishami Moghaddam   +2 more
doaj   +1 more source

Characteristics of electrostatic discharges between metallic objects in the ion-flow field under HVDC lines

open access: yesThe Journal of Engineering, 2019
Metallic objects under high-voltage direct current (HVDC) transmission lines will produce certain induced voltages due to the charging of ion flow. Electrostatic discharge (ESD) may occur between two objects at different potentials when they are close ...
Xueshan Li, Donglai Wang, Tiebing Lu
doaj   +1 more source

Peak Shaving Model for Coordinated Hydro-Wind-Solar System Serving Local and Multiple Receiving Power Grids via HVDC Transmission Lines

open access: yesIEEE Access, 2020
To meet the rapid growth of electricity demand and reduce carbon intensity, China is developing renewable energies rapidly including hydropower, wind and solar power.
Benxi Liu   +5 more
doaj   +1 more source

Dynamic analysis of voltage angle droop controlled HVDC systems in curative congestion management scenarios [PDF]

open access: yesEPJ Web of Conferences, 2019
The integration of the voltage-source converter based high voltage direct current (VSC-HVDC) system makes the set-point of its active power adaptive to the changes in the power flow, and contributes to the curative congestion management.
Zhou Yang, Dalhues Stefan, Häger Ulf
doaj   +1 more source

Transient overvoltage on overhead metal return lines of ±500 kV MMC-HVDC grid

open access: yesThe Journal of Engineering, 2018
The ±500 kV half-bridge modular multilevel converter-high-voltage DC (MMC-HVDC) grid project with overhead transmission line is under construction in China at present.
Huiwen He   +4 more
doaj   +1 more source

WSN-Based Space Charge Density Measurement System. [PDF]

open access: yesPLoS ONE, 2017
It is generally acknowledged that high voltage direct current (HVDC) transmission line endures the drawback of large area, because of which the utilization of cable for space charge density monitoring system is of inconvenience.
Dawei Deng   +3 more
doaj   +1 more source

Application of Grey Wolf Optimizer Algorithm for Optimal Power Flow of Two-Terminal HVDC Transmission System [PDF]

open access: yes, 2017
This paper applies a relatively new optimization method, the Grey Wolf Optimizer (GWO) algorithm for Optimal Power Flow (OPF) of twoterminal High Voltage Direct Current (HVDC) electrical power system.
Hassan, Heba Ahmed
core   +1 more source

Unified reference controller for flexible primary control and inertia sharing in multi-terminal voltage source converter-HVDC grids [PDF]

open access: yes, 2016
Multi-terminal dc (MTDC) grids are expected to be built and experience rapid expansion in the near future as they have emerged as a competitive solution for transmitting offshore wind generation and overlaying their ac counterpart. The concept of inertia
Candela García, José Ignacio   +4 more
core   +2 more sources

Novel protection method for VSC‐HVDC transmission lines

open access: yesThe Journal of Engineering, 2018
The large shunt capacitances on both sides of VSC‐HVDC transmission line will block and reflect the travelling waves when a fault occurs on DC cable lines. When a forward fault occurs, the protection will detect the arrival of forward and backward travelling wave simultaneously. While for a backward fault, the arrival time difference of the forward and
Lingtong Jiang   +5 more
openaire   +2 more sources

Time-Frequency Transformation Technique with Various Mother Wavelets for DC Fault Analysis in HVDC Transmission Systems

open access: yesSir Syed University Research Journal of Engineering and Technology, 2023
HVDC transmission has become a cost-effective option for transferring high voltage over greater distances. Protecting an HVDC transmission line is more challenging than protecting an AC transmission line due to its low impedance and absence of zero ...
Hasnain Raza chandio, Aslam Pervez Memon
doaj  

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