Results 31 to 40 of about 508 (157)

Research on Serial VSC-LCC Hybrid HVdc Control Strategy and Filter Design Scheme

open access: yesEnergies, 2020
This paper investigated the characteristics of a novel type of hybrid high voltage direct current (HVdc) converter, which is composed by line commutated converter series with voltage source converter.
Fan Cheng, Lijun Xie, Zhibing Wang
doaj   +1 more source

A decision-making method for the operation flexibility enhancement of hybrid cascaded MTDC

open access: yesFrontiers in Energy Research, 2023
To enable the integration of large-scale renewable energy, hybrid HVDC technology, which combines the technical advantages of LCC-HVDC and VSC-HVDC, is being gradually deployed in the power grid nowadays. The operation of the Wu-dong-de Hybrid DC Project
Yuhan Wang, Zhou Li, Yuanshi Zhang
doaj   +1 more source

System security of hybrid AC-HVDC-systems challenges and new approaches for combined security assessment, preventive optimization and curative actions

open access: yesGlobal Energy Interconnection, 2018
The intense application of Voltage Source Converter based HVDC interconnections and grids will result in a hybrid AC-HVDC-system. The operation of such a system becomes complex regarding system security and system operation.
Florian Sass   +3 more
doaj   +1 more source

Communication Requirements for a Hybrid VSC Based HVDC/AC Transmission Networks State Estimation

open access: yesEnergies, 2021
The communication infrastructure of the modern Supervisory, Control and Data Acquisition (SCADA) system continues to enlarge, as hybrid High Voltage Direct Current (HVDC)/Alternating Current (AC) networks emerge.
Motaz Ayiad   +3 more
doaj   +1 more source

Analysis of Hybrid LCC-VSC HVDC Transmission Systems

open access: yesInternational Journal of Electrical Power & Energy Systems, 2018
High Voltage Direct Current(HVDC) is widely considered as an efficient and economical option for long distances transmission of electric power compared to ac transmission. Conventional HVDC transmission is based on line commutated converter(LCC). Although this mature technology has large transmission capacity, it still has some disadvantages such as ...
Chunyi Guo   +3 more
openaire   +3 more sources

A Commutation Failure Suppression Control Method Based on the Controllable Operation Region of Hybrid Dual-Infeed HVDC System

open access: yesEnergies, 2018
With the increased use of high voltage direct current (HVDC) systems, line commutated converters (LCC-HVDC) and voltage source converters (VSC-HVDC) tend to feed into AC systems over short electrical distances.
Chao Xiao   +5 more
doaj   +1 more source

Electromechanical Transient Modeling and Control Strategy of Decentralized Hybrid HVDC Systems

open access: yesEnergies, 2019
This paper studies the electromechanical transient model and the control strategy of line commutated converter (LCC) and modular multilevel converter (MMC) based decentralized hybrid High Voltage Direct Current (HVDC) Transmission systems.
Guoteng Wang   +4 more
doaj   +1 more source

Electromechanical Transient Modeling of Line Commutated Converter-Modular Multilevel Converter-Based Hybrid Multi-Terminal High Voltage Direct Current Transmission Systems

open access: yesEnergies, 2018
A method for electromechanical modeling of line commutated converter (LCC)-modular multilevel converter (MMC)-based hybrid multi-terminal High Voltage Direct Current Transmission (HVDC) systems for large-scale power system transient stability study is ...
Liang Xiao   +4 more
doaj   +1 more source

Overview of Research on Stability and Control of VSC-HVDC

open access: yes发电技术, 2019
Voltage source converter based high voltage direct current (VSC-HVDC) transmission systems has the advantages of good active and reactive power control capability and more suitable for multi-terminal transmission system.
Mingzhe WU, Wuhui CHEN
doaj   +1 more source

Mesh‐Based Charge Simulation Method and Its Applications to Electrostatic Electric Field Computation

open access: yesHigh Voltage, EarlyView.
ABSTRACT The charge simulation method (CSM) is a well‐established numerical technique employed in electrostatic field calculations, primarily due to its simplicity and computational efficiency. However, conventional CSM face challenges when applied to complex geometries, as they necessitate meticulous manual placement of simulation charges and matching
Tahan Wang   +5 more
wiley   +1 more source

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