Results 71 to 80 of about 6,768 (226)

DESIGN AN SFCL FOR HVDC GRID

open access: yes, 2023
The increasing use of HVDC systems for transmitting power over long distances and incorporating renewable energy sources has made dealing with fault currents a key concern to maintain grid stability and equipment safety. This thesis offers an overview of
Duntow, Khadhar Abdi
core  

DC Side Impedance Modelling of an Actual Line Commutated Converter High Voltage Direct Current System and DC Resonance Characteristics

open access: yesHigh Voltage, EarlyView.
ABSTRACT The stability analysis of Line Commutated Converter High Voltage Direct Current (LCC‐HVDC) is of considerable engineering importance. Establishing its analytical mathematical model helps to analyse stability and the factors that affect stability of the system.
Juanjuan Wang   +6 more
wiley   +1 more source

Enhancing Hydrophobic Stability of Silicone Rubber Insulators Under High‐Voltage Direct Current Stress Through Optimised Nano‐Fumed Silica Surface Area: A Dynamic Drop Test Study

open access: yesHigh Voltage, EarlyView.
ABSTRACT The long‐term hydrophobic stability of silicone rubber (SiR) insulators is essential for their reliability in high‐voltage direct current (HVDC) applications. This study investigates the effect of nano‐silica fillers with varying specific surface areas (SSA = 120, 200 and 300 m2/g) and different concentrations of alumina trihydrate (ATH ...
Mahmoud A. Ali   +3 more
wiley   +1 more source

Vulnerability assessment of high-voltage direct current transmission systems to cyberattacks

open access: yesSecurity and Safety
High-voltage direct current (HVDC) transmission systems demonstrate significant advantages in long-distance and high-capacity power transmission. Voltage-source converter-based HVDC (VSC-HVDC), with its flexible power flow control and independent active ...
Guo Rong, Liu Mengxiang, Deng Ruilong
doaj   +1 more source

Comprehensive Design and Experimental Validation of 30 kV Ultra‐Fast Flexible Controllable Arresters for HVDC Systems

open access: yesHigh Voltage, EarlyView.
ABSTRACT To effectively suppress transient overvoltages in HVDC systems, the design and experimental validation of a multi‐module series controllable arrester are presented. The voltage‐limiting performance, series voltage equalisation capability, and robustness under fault conditions in high‐voltage scenarios require further research.
Tai Yang   +4 more
wiley   +1 more source

Protection Systems for Multi-Terminal HVDC Grids

open access: yes, 2018
Publisher Copyright: © 2018, European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ). All rights reserved.Nowadays the protection of Voltage Sourced Converters (VSC-HVDC) is still a challenge as the high fault
D.M. Larruskain   +10 more
core   +1 more source

Dynamic Current Routing in Conductive Liquid Crystal Elastomers for Complex Deformation Actuators

open access: yesAdvanced Materials Technologies, Volume 11, Issue 12, 18 June 2026.
This work introduces a novel actuation control strategy in which electrical stimulation generates localized Joule heating in conductive liquid crystal elastomer (LCE) surfaces, enabling complex 3D deformations from a single homogeneous surface without preprogramming.
Gloria PouWai Lei   +2 more
wiley   +1 more source

Analysis of harmonics in subsea power transmission cables used in VSC-HVDC transmission systems operating under steady-state conditions

open access: yes, 2007
Subsea power cables are a critical component of a voltage-source converter-high-voltage direct current (VSC-HVDC) transmission system in any offshore electrical power scheme.
Bucknall, R.W.G., Chien, C.H.
core  

Steady-state Voltage Security-constrained Optimal Frequency Control for Weak HVDC Sending-end AC Power Systems

open access: yesJournal of Modern Power Systems and Clean Energy
Due to the fact that a high share of renewable energy sources (RESs) are connected to high-voltage direct current (HVDC) sending-end AC power systems, the voltage and frequency regulation capabilities of HVDC sending-end AC power systems have diminished.
Qiangqiang Wang   +5 more
doaj   +1 more source

OPF-Based Optimal Location of Two Systems Two Terminal HVDC to Power System Optimal Operation [PDF]

open access: yesJournal of Intelligent Procedures in Electrical Technology, 2013
In this paper a suitable mathematical model of the two terminal HVDC system is provided for optimal power flow (OPF) and optimal location based on OPF such power injection model.
Mehdi Abolfazli   +3 more
doaj  

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