Results 21 to 30 of about 6,910 (228)

Reliability evaluation of high voltage direct current transmission protection system based on interval analytic hierarchy process and interval entropy method mixed weighting

open access: yesEnergy Reports, 2021
As the core of the secondary part of the high voltage direct current transmission (hereinafter referred to as HVDC) transmission system, HVDC protection is the first line of defense for the safe and reliable operation of the HVDC transmission system. Its
Ting Wang   +5 more
doaj   +1 more source

Research on calculated method for space electric field around HVDC transmission lines with buildings nearby

open access: yesIET Generation, Transmission & Distribution, 2022
High voltage direct current (HVDC) transmission technology has incomparable advantages in long‐distance and large‐capacity transmission. With the development of HVDC transmission technology, transmission lines inevitably pass through some densely ...
Yingyi Liu   +5 more
doaj   +1 more source

Harmonic loss analysis of converter transformer in LCL-HVDC system

open access: yesEnergy Reports, 2020
At present, China’s energy distribution and economic development are extremely unbalanced. In order to make rational use of resources, China has promoted the “west to East power transmission” and “north to South Power Transmission” pattern.
Qing Ni   +3 more
doaj   +1 more source

Estimation Method for Metal Damage Struck by Lightning Considering Probability Distribution of Lightning Current Parameters

open access: yesShanghai Jiaotong Daxue xuebao, 2020
Taking the commonly used metal material aluminum 3003 as an example, and based on the simulated lightning current metal damage test results in the four typical compositions of actual lightning current, the damage characterization parameters such as ...
LI Tianwei, LIU Lei, CHEN Jian
doaj   +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

Single-end Protection Scheme Based on Transient Power Waveshape for Hybrid HVDC Transmission Lines

open access: yesJournal of Modern Power Systems and Clean Energy, 2023
The recent in-depth development of hybrid high-voltage direct current (HVDC) transmission systems poses looming adaptability challenges to protection.
Feiyang Dai, Zexin Zhou, Xingguo Wang
doaj   +1 more source

Model parameter identification for scaled-down analogous HVDC transmission lines using broad spectral response analysis

open access: yesEnergy Reports, 2022
Traditional analogous π-shape transmission line models are mainly designed based on the amplitude and phase response characteristics of the distributed-parameter transmission lines at the power frequency.
Jinrui Tang   +4 more
doaj   +1 more source

Experimental study on fault ride-through capability of VSC-based HVDC transmission system [PDF]

open access: yesArchives of Electrical Engineering, 2021
For voltage-source-converter based high-voltage-direct-current (VSC-HVDC) transmission systems, fault ride-through (FRT) capability is a very important grid requirement in order to enhance its operational availability under an alternating current (AC ...
Ngo Minh Khoa   +2 more
doaj   +1 more source

Practical calculation of SCR of LCC-HVDC considering the role of VSC-HVDC

open access: yesZhejiang dianli, 2023
The accurate quantification of transmission limit and grid strength of the multi-infeed LCC-HVDC (line-commutated converter technology-based high-voltage DC) and VSC-HVDC (voltage source converter technology-based high-voltage DC) systems has become one ...
YANG Xiaolei   +5 more
doaj   +1 more source

Causes of high amplitude of pipe-to-soil potential under HVDC interference and influencing factors

open access: yes工程科学学报, 2021
Since the 1950s, international studies have confirmed the technical advantages of high-voltage direct current (HVDC) transmission projects, such as large capacity, low loss, and high stability.
Xun YUAN   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy