Results 1 to 10 of about 266,617 (137)
A DC/DC autotransformer with integrated fault blocking capability
Zhejiang dianli, 2023 As crucial equipment for multi-voltage DC interconnection， high-capacity high-voltage DC/DC converters can be used for voltage conversion and DC fault isolation.
LU Yi +5 more
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Energies, 2022 Modular multilevel converters (MMCs) based on half-bridge submodules (HBSMs) are unable to prevent the AC side contribution to DC side fault currents, thus necessitating circuit breakers (CBs) for protection.
Munif Nazmus Sakib +2 more
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电力工程技术, 2023 Aiming at the transient overvoltage problem of high proportion new energy multi direct current (DC) transmission system caused by DC blocking fault, the interaction mechanism between multiple DC lines is analyzed firstly and the multi-outfeed voltage ...
ZHANG Qirui +5 more
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IEEE Access, 2021 Conventional dc bias suppression strategies mainly rely on a single type of device, such as blocking capacitor or blocking resistance. However, these methods are passive palliatives and cannot restrain dc bias currents from the sources.
Shumin Ma +6 more
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Zhongguo dianli, 2021 DC blocking can cause transient overvoltage in the wind-thermal-storage system with multi-channel delivery. Firstly, the paper analyzes the impact of the surplus reactive power and the strength of the sending-end system on the transient overvoltage of ...
Jixian ZHAO, Fengting LI, Chunya YIN
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Zhongguo dianli, 2020 Based on the operating characteristics of the DC blocking devices, this paper analyzes the influence of the DC blocking devices on the DC current near the neutral point of the transformers, and proposes a multi-objective optimization configuration method
Hongwei LIU
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DC blocking criterion and measure calculation method for VSC-HVDC grid of ring structure
电力工程技术, 2022 In the past, the structures of conventional direct current (DC) and flexible DC transmission projects were end-to-end or multi-terminal radiation. The corresponding stability control system uses the converter electric quantity and pole emergency switch ...
XU Ke +5 more
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Research on Multi-port DC circuit breaker with power flow regulation function and its control
Zhejiang dianli, 2022 In view of insufficient degrees of freedom， large number of DC circuit breakers and high cost in multi-branch DC power grid， this paper presents an economic multi-port DC circuit breaker with power flow regulation and fault blocking functions.
DING Chao +4 more
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A high-reliability PV system by replacing electrolytic capacitors with film capacitors
Energy Reports, 2023 Electrolytic capacitors are considered a vulnerable link in PV systems. In order to enhance the system reliability and lifespan, this paper investigates a PV system without electrolytic capacitors. First, the system structure is introduced.
Wenping Zhang +4 more
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Kongzhi Yu Xinxi Jishu, 2023 Solid-state circuit breakers (SSCBs) are characterized by their capacity to rapidly cut off faulty currents. In the context of deep-sea medium voltage DC/DC converter applications—an environment that necessitates the black start of DC/DC and the ...
CHEN Xiulin, LIU Kean, TANG Zhifeng
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