Results 21 to 30 of about 377 (128)

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

AC fault ride through control strategy on inverter side of hybrid HVDC transmission systems

open access: yesJournal of Modern Power Systems and Clean Energy, 2019
Hybrid high-voltage direct current (HVDC) transmission systems employ a new type of HVDC transmission topology that combines the advantages of the line-commutated converter system and the voltage-source converter system.
Zexin Zhou   +6 more
doaj   +1 more source

A review of system topologies, key operation and control technologies for offshore wind power transmission based on HVDC

open access: yesIET Generation, Transmission & Distribution, 2023
Offshore wind farm (OWF) is considered as a perfect zero‐carbon energy source for the future power system. However, the growing offshore distance and water depth of OWF make the OWF HVDC transmission technique a more promising solution than HVAC due to ...
Junpeng Deng   +6 more
doaj   +1 more source

Study on the characteristic of the grounding fault on the cascaded midpoint side of the hybrid cascaded HVDC system

open access: yesFrontiers in Energy Research, 2023
The hybrid cascaded high-voltage direct current (HVDC) system combines the system support capabilities of the modular multilevel converter (MMC) with the capacity of the line-mutated converter’s (LCC’s) advantage of high-power transmission.
Yonghao Ren   +6 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

Enhanced Independent Pole Control of Hybrid MMC-HVdc System [PDF]

open access: yesIEEE Transactions on Power Delivery, 2018
This paper presents an enhanced independent pole control scheme for hybrid modular multilevel converter (MMC) based on full bridge sub-module (FBSM) and half bridge sub-module (HBSM). A detailed analysis of power distribution between upper and lower arms under asymmetrical DC pole voltages is presented.
Wang Xiang   +3 more
openaire   +3 more sources

A Coordinating Control for Hybrid HVdc Systems in Weak Grid

open access: yesIEEE Transactions on Industrial Electronics, 2019
A coordinating control strategy is proposed for a hybrid high voltage dc (HVdc) system comprising a capacitor commutated converter connected in series with a two-stage voltage source converter called “Vernier.” This approach ensures that 1) the tap changers and switched capacitor banks are eliminated by Vernier controls that maintain constant firing ...
Jagdeep Kaur, Nilanjan Ray Chaudhuri
openaire   +1 more source

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

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