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Investigation on the fault monitoring of high-voltage circuit breaker using improved deep learning. [PDF]
PLoS ONE, 2023 Mechanical faults are the main causes of abnormal opening, refusal operation, or malfunction of high-voltage circuit breakers. Accurately assessing the operational condition of high-voltage circuit breakers and delivering fault evaluations is essential ...
Hao Chen +5 more
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A current‐limiting DC circuit breaker with power flow control capability
IET Generation, Transmission & Distribution, 2022 Power flow controller (PFC), fault current limiter (FCL) and DC circuit breaker (DCCB) are important equipment in the DC grid. There are a large number of power electronic components in these equipment, resulting in high cost.
Shimin Xue +5 more
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Optimal circuit breaker allocation strategy in DC transmission-connected systems [PDF]
Scientific ReportsThe purpose of this study is to provide data for the best possible circuit breaker allocation in power grids with HVDC transmission while taking circuit breaker failure into account. The lack of a suitable selection of HVDC circuit breakers is one of the
Beopsoo Kim, Insu Kim
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Topology and control of a novel hybrid HVDC circuit breaker with self-powered capability
Energy Reports, 2022 Power supply for IGBT drive circuit of HVDC circuit breaker is a great challenge in practical engineering. At present, most of the HVDC circuit breakers rely on external power sources. This paper proposes a self-powered hybrid HVDC circuit breaker.
Huangqing Xiao +4 more
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A Self-commutated HVDC Circuit Breaker Based on Forced Zero Crossing Technology
Zhongguo dianli, 2021 In order to improve the breaking capacity of Hybrid DC circuit breaker and reduce the harm of DC short circuit fault to the system, we proposed a self-commutated HVDC circuit breaker based on forced zero crossing technology.
Guoqing LI +3 more
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Restrike characteristics of vacuum circuit breaker in its opening process under DC voltage
IET Science, Measurement & Technology, 2023 The restrike of vacuum circuit breaker during the breaking process causes overvoltage and intensifies the insulation deterioration of high‐voltage equipment. To solve this problem, the vacuum breaker aging test method and the restrike characteristics are
Jixing Sun +8 more
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Development of four‐terminal DC circuit breaker based on commutating path multiplexing
IET Generation, Transmission & Distribution, 2023 Multi‐terminal flexible DC power grid plays an important role in large‐scale new energy integration, which usually requires the installation of multi‐terminal DC circuit breaker (MTCB) at the intersection of multiple DC lines. At present, the research on
Zhizheng Gan +9 more
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Energy Reports, 2020 The flexible DC transmission system needs a DC circuit breaker to remove and isolate the bipolar short-circuit fault to prevent the excessive short-circuit current from damaging the DC transmission system.
Can Ding +3 more
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Insulation Resistance and Tracking Index of Circuit Breaker According to the Accelerated Aging Test
IEEE Access, 2023 This study examined insulation resistance and tracking index characteristics through the accelerated aging test of low-voltage circuit breakers. The leakage current was found to be influenced by external factors rather than the internal structure ...
Sin-Dong Kang, Jae-Ho Kim
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Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2023 A need in finding of new ways of energy saving at open switchgears of power plants is substantiated. In order to increase energy saving efficiency, an auxiliary breaker is suggested to be inserted between a transformer of a block and its two high-voltage
A. S. Barukin +3 more
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