Results 11 to 20 of about 2,596,360 (213)

Nonlinear Observer-Based Controller Design for VSC-Based HVDC Transmission Systems Under Uncertainties

open access: yesIEEE Access, 2023
This paper addresses the problem of output feedback control for high voltage direct current (HVDC) systems based on voltage source converters (VSC). Specifically, the system under study consists of two power grids and two VSC stations connected via a ...
Ilyass El Maysse   +7 more
semanticscholar   +1 more source

Technical and Economic Analysis of an HVDC Transmission System for Renewable Energy Connection in Afghanistan

open access: yesSustainability, 2022
Aged and insufficient domestic power plants and insecure, unreliable and expensive power imports pose significant challenges for the power sector of Afghanistan.
Gul Ahmad Ludin   +6 more
semanticscholar   +1 more source

A comprehensive review of DC fault protection methods in HVDC transmission systems

open access: yes, 2021
High voltage direct current (HVDC) transmission is an economical option for transmitting a large amount of power over long distances. Initially, HVDC was developed using thyristor-based current source converters (CSC).
Mohan Muniappan
semanticscholar   +1 more source

Evaluation of the Transient Overvoltages of HVDC Transmission Lines Caused by Lightning Strikes

open access: yesEnergies, 2022
High-voltage direct-current (HVDC) transmission systems are considered an outstanding solution due to high electrical losses emerging from long-distance transmission. However, HVDC transmission lines (TLs) are vulnerable to lightning strikes.
A. S. Zalhaf   +5 more
semanticscholar   +1 more source

Renewable energy transport via hydrogen pipelines and HVDC transmission lines

open access: yes, 2021
The majority penetration of Variable Renewable Energy (VRE) will challenge the stability of electrical transmission grids due to unpredictable peaks and troughs of VRE generation.
M. Semeraro
semanticscholar   +1 more source

Evaluation, Analysis and Diagnosis for HVDC Transmission System Faults via Knowledge Graph under New Energy Systems Construction: A Critical Review

open access: yesEnergies, 2022
High voltage direct current (HVDC) transmission systems play a critical role to optimize resource allocation and stabilize power grid operation in the current power grid thanks to their asynchronous networking and large transmission capacity.
Jiyang Wu   +6 more
semanticscholar   +1 more source

Solid-State DC Circuit Breakers and Their Comparison in Modular Multilevel Converter Based-HVDC Transmission System

open access: yes, 2021
This paper proposes a new and surge-less solid-state direct current (DC) circuit breaker in a high-voltage direct current (HVDC) transmission system to clear the short-circuit fault.
Gul Ahmad Ludin   +6 more
semanticscholar   +1 more source

Fault detection and classification of an HVDC transmission line using a heterogenous multi‐machine learning algorithm

open access: yesIET Generation, Transmission & Distribution, 2021
This paper presents a novel integrated multi-Machine Learning (ML) system architecture for the protection of bipolar HVDC transmission line in which different ML models of Support Vector Machine (SVM) and K-Nearest Neighbours (KNN) are used for fault ...
Saber Ghashghaei, M. Akhbari
semanticscholar   +1 more source

Analysis of the influence of long-distance DC cable on the fault of flexible HVDC system

open access: yes电力工程技术, 2023
In recent years, offshore wind power has developed rapidly. It is the most effective way to transmit the wind power far away from the coast through the voltage source converter based high voltage direct current (VSC-HVDC) transmission system.
JIANG Chongxue   +5 more
doaj   +1 more source

IoT Technology-Based Protection Scheme for MT-HVDC Transmission Grids With Restoration Algorithm Using Support Vector Machine

open access: yesIEEE Access, 2021
This paper proposes a protection scheme for multi-terminal high voltage direct current (MT-HVDC) transmission grids. The proposed scheme is based on three protection levels; di/dt overcurrent protection as the main protection, dv/dt undervoltage ...
A. Eladl   +3 more
semanticscholar   +1 more source

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