Results 41 to 50 of about 122,975 (192)
High Voltage, 2021 The ongoing large‐scale construction of ultra high voltage direct current projects in China makes the crossing of two high voltage direct current (HVDC) lines inevitable.
Xiaoqian Ma, Li Xie, Kun He, Jiayu Lu
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High Voltage, 2021 A bipolar short‐circuit transient fault identification method for overhead transmission lines in modular multi‐level converter‐based high voltage direct current (MMC‐HVDC) grid based on the hybrid HVDC breaker is proposed.
Botong Li +5 more
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Engineering Proceedings, 2023 This research paper addresses the issue of enhancing the operational availability of NPC three-level converter-based high-voltage direct current (HVDC) transport systems during alternating current (AC) grid fault conditions.
Ilyass El Myasse +3 more
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The Journal of Engineering, 2019 This paper considers the distributed capacitance of transmission lines to research the protection of high-voltage direct-current (HVDC) transmission line.
Yunke Zhang +5 more
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New two chamber transfer switch for 6500 A commutation current
Global Energy Interconnection, 2018 HVDC transfer switches are used in different locations in electrode lines of HVDC transmission systems for their reconfigurations. They have to carry and commutate currents to the overload currents of HVDC transmission systems, which increased to 6,400A ...
Lutz-Rüdiger Jänicke +4 more
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A Novel Protection Scheme for MMC-HVdc Transmission Lines Based on Cross-Entropy of Charge
IEEE Access, 2020 MMC-HVdc transmission system has become the mainstream of power construction and plays an increasingly important role in the power system. However, the dc line fault results in shutting down of the converters, which can greatly endanger the security of ...
Chuanjian Wu, Dahai Zhang, Jinghan He
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Comparative Analysis and Optimization of HVAC and Multi-Terminal HVDC Integration 400kV Super Grid (Case Study of Iraq) [PDF]
Problems of the Regional EnergeticsThe Iraqi 400-kV super grid faces significant operational challenges, including high transmission losses, overloaded transmission lines, voltage instability, and limited long-distance power transfer capability.
Sana Khalid Abdulhassan +2 more
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Long‐term statistics of corona loss of HVDC transmission line
The Journal of Engineering, 2019 Corona loss is one of the electromagnetic environment parameters of high‐voltage direct current (HVDC) transmission lines. So far many countries have carried out researches and measurements on it. In 2008, UHVDC test lines were established in the National Engineering Laboratory for UHV Technology (Kunming) at the altitude about 2100 m.
Zhanqing Yu +4 more
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Fault Identification of DC Transmission Lines Based on Energy Ratio Analysis
Zhongguo dianli, 2020 HVDC transmission lines, being long in distance and crossing complex natural environments, are prone to lightning and short to ground faults. Aiming at this problem, a novel fault identification method is proposed based on energy ratio.
Peng ZHU +9 more
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Aswan HighDam/Cairo proposed HVDC transmission system
Beni-Suef University Journal of Basic and Applied Sciences, 2014 High-voltage direct current (HVDC) transmission is an efficient technology designed to deliver large amounts of power over long distances. The technology is a key component in the future energy transmission system based on renewable energy sources.
Ahmed Y.M.R. Salama +3 more
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