Results 1 to 10 of about 322 (124)

Review of HVDC systems for enhancing resilience after extreme natural events

open access: yesThe Journal of Engineering, 2021
Compared with AC systems, HVDC systems are more flexible and potentially contribute to enhancing system resilience. Currently, three types of HVDC technologies, LCC‐HVDC (Line‐commutated Current‐sourced Converters, LCC), VSC‐HVDC (Voltage Sourced ...
Chuhang Luo, Liang Liang, Xiaoyang Bai
doaj   +3 more sources

Interconnection of VSC-HVDC and LCC-HVDC using DC–DC autotransformer

open access: yesThe Journal of Engineering, 2019
This article investigates the feasibility of interconnecting LCC-HVDC and VSC-HVDC through an un-interrupted DC autotransformer (DC AUTO). The interconnected system aims at taking advantage of two HVDC technologies.
Zhihan Yang   +7 more
doaj   +2 more sources

A New DC-DC Converter Linking LCC-HVDC Transmission Networks [PDF]

open access: yes2021 23rd European Conference on Power Electronics and Applications (EPE'21 ECCE Europe), 2021
Transferring bulk power via high voltage direct current (HVDC) transmission is dominated by line commutated converters (LCC). This is due to the robustness and higher ratings of the thyristors as well as the higher converter efficiency. Nevertheless, most of these transmission networks are point to point. This is due to the challenges of allowing multi-
Elgenedy, Mohamed   +4 more
openaire   +4 more sources

A Fuzzy Controlled LCC HVDC System with AC Voltage and Reactive Power Control [PDF]

open access: yesE3S Web of Conferences, 2021
The main work focus is on the LCC HVDC reactive power control system with fluid regulated AC voltage. The reactive power and the voltage control capacity of LCC HVDC were examined and demonstrated with controlled condensers.
Anusha More   +2 more
doaj   +1 more source

Research on the Voltage Supporting Capability of Multi-VSC-HVDC Subsystems Operation Strategy to Receiving-end LCC-HVDC Network in Weak AC Grid

open access: yesCES Transactions on Electrical Machines and Systems, 2023
For the hybrid multi-infeed HVDC system in which the receiving-end grid is a strong AC grid including LCC-HVDC subsystems and multiple VSC-HVDC subsystems, it has higher voltage support capability.
Tao Li, Yongli Li, Yuchen Zhu
doaj   +1 more source

Continuous commutation failure suppression strategy in hybrid multi-infeed HVDC transmission system

open access: yes电力工程技术, 2022
For the wide application of high voltage direct current (HVDC) transmission engineering,the continuous commutation failure of line commutated converter HVDC (LCC-HVDC) has a seriously negative impact on the stable operation of the power system. Therefore,
ZHONG Mingming   +4 more
doaj   +1 more source

Influence of Inverter Controller Parameters on the Small-signal Stability of LCC-HVDC System Based on a Practical Project [PDF]

open access: yesE3S Web of Conferences, 2021
Unreasonable control parameters of the Line Commutated Converter based High Voltage Direct Current (LCC-HVDC) system may induce small-signal instability.
Li Huan, Qin Kang
doaj   +1 more source

Dynamic Phasor Modelling of LCC-HVDC System Based on a Practical Project [PDF]

open access: yesE3S Web of Conferences, 2021
This paper presents a detailed dynamic phasor modeling process of a line-commutated converter-based HVDC (LCC-HVDC) system. Firstly, the dynamic phasor models of the single-ended LCC rectifier station, inverter station and the DC line are established ...
Li Huan, Qin Kang
doaj   +1 more source

Research on emergency DC power support coordinated control for hybrid multi-infeed HVDC system

open access: yesArchives of Electrical Engineering, 2020
Based on the respective characteristics of line-commutated converter high-voltage direct current (LCC-HVDC) and voltage-source converter high voltage direct cur- rent (VSC-HVDC), two additional emergency DC power support (EDCPS) controllers are designed,
Congshan Li   +3 more
doaj   +1 more source

Application research on pilot protection method for multi‐terminal hybrid line‐commutated converter/modular multilever converter‐based high voltage DC system

open access: yesIET Generation, Transmission & Distribution, 2021
The multi‐terminal hybrid line commutated converter (LCC)/modular multilevel converter (MMC)‐based high voltage dc (HVDC) has been applied to solve the simultaneous commutation failure problem in East China.
Chenhao Zhang   +6 more
doaj   +1 more source

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