Results 21 to 30 of about 512 (127)
A Systematic Review of Key Challenges in Hybrid HVAC–HVDC Grids
Energies, 2021 The concept of hybrid high-voltage alternating current (HVAC) and high-voltage direct current (HVDC) grid systems brings a massive advantage to reduce AC line loading, increased utilization of network infrastructure, and lower operational costs. However,
Umar Javed +9 more
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Applicability analysis of travelling wave protection for the hybrid HVDC system
The Journal of Engineering, 2019 The hybrid high-voltage direct current (HVDC) system, in which the rectifier is made up of the line commutated converter (LCC) and the inverter is composed of the modular multilevel converter (MMC), has quite different fault characteristics from the ...
Shaojie Cheng +3 more
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CES 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
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Practical calculation of SCR of LCC-HVDC considering the role of VSC-HVDC
Zhejiang 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
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Fast Harmonic compensation in hybrid HVDC offshore system
Journal of Physics: Conference Series, 2022 Hybrid HVDC systems have been proposed as an alternative for nominal VSC-Based HVDC for offshore applications. Hybrid HVDC systems consist of an offshore power station composed of the connection of high-power diode rectifiers in series with a fractional power VSC-HVDC.
Tian, Shangen +3 more
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Hybrid ultra‐HVDC system with LCC and cascaded hybrid MMC
The Journal of Engineering, 2018 Nowadays, the hybrid high‐voltage direct current (HVDC) system consisting of line commutated converter (LCC) and modular multilevel converter (MMC) has become the most competitive candidate in multi‐infeed power systems. Owing to the limitation of insulated‐gate bipolar transistor's withstand voltage, the DC voltage rating of MMC is not compatible with
Ruizhang Yang +3 more
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The hybrid simulation system of hydropower generation units in islanding AC grid and its applications [PDF]
ITM Web of Conferences, 2022 It is a trend for the large hydropower bases to transport the electricity to consuming center with High Voltage Direct Current (HVDC) transmission lines. The fault of HVDC has great significance impact on hydropower units in islanding sending AC grid. In
Zhang Shuang +3 more
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IET 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
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Lifetime estimation for hybrid HVDC breakers
International Journal of Electrical Power & Energy Systems, 2020 Abstract As an important aspect of breaker reliability analysis, the lifetime of a hybrid high-voltage direct current (HVDC) breaker is estimated in this paper. Based on the equivalent thermal network, the static temperature profiles of the breaker components during normal operation are solved for using an iterative method, and the components ...
A. Pengfei Yu +5 more
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Communication Requirements for a Hybrid VSC Based HVDC/AC Transmission Networks State Estimation
Energies, 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
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