Results 1 to 10 of about 54 (53)
A Review of Research Progress in Very Fast Transient Overvoltage (VFTO) Suppression Technology
EnergiesThe very fast transient overvoltage (VFTO) is characterized by steep wavefronts, high amplitude, and wide spectrum. These characteristics can lead to partial discharges or insulation breakdowns in potted insulators, which can lead to localized ...
Huan Wang +3 more
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Research on VFTO Identification of GIS Based on Wavelet Transform and Singular Value Decomposition
Energies, 2022 The accurate identification of Very Fast Transient Overvoltage (VFTO) is the key of overvoltage control in modern smart grids. In order to accurately identify VFTO generated by the operation of a disconnector in Gas Insulated Substation (GIS), a VFTO ...
Gang Xiao +7 more
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Development and Experimental Research of VFTO Measuring Sensor
Sensors, 2022 Very fast transient overvoltage (VFTO) generated by an operating disconnector is one of the main reasons for electromagnetic disturbance in gas-insulated switchgear (GIS) substations.
Zihan Teng +4 more
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IET Generation, Transmission & Distribution, 2023 The operation of disconnectors in gas insulated substation (GIS) or power plant will produce very fast transient overvoltage (VFTO), which is considered to have serious harm to transformer longitudinal insulation and other high‐voltage equipment ...
Runyu Fu +6 more
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Energy Reports, 2023 The very fast transient overvoltage/overcurrent (VFTO/VFTC) signals generated during disconnectors switching operation may result in a significant threat to the reliability of power grids.
Zhenhua Li +5 more
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南方能源建设, 2022 [Introduction] Massive usage of gas-insulated metal-enclosed switchgear (GIS) has caused serious electromagnetic interference, especially when the isolating switch in GIS is operated with small capacitive current, it does not have arc extinguishing ...
LI Jiahui
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The Study of VFTO Distribution in the Insulation System of IOCT Used in Traction Network
Energies, 2022 The FDS (Frequency-domain Dielectric Spectroscopy) of oil-immersed insulation paper, and semi-conductive paper with different moisture content, has been measured.
Zhonghuan Su +5 more
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Energies, 2023 A High-Altitude Electromagnetic Pulse (HEMP) could induce very fast transient overvoltage (VFTO) with nanosecond level rise time and mega-volt amplitude, which severely threatens the electrical devices connected to the elevated transmission line.
Zheng Liu +6 more
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Energies, 2020 Assessment of very fast transient overvoltage (VFTO) requires good knowledge of the behavior of gas-insulated substation when subjected to very high frequencies.
Muresan Alexandru +4 more
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Research on On-Line Detection Method of Transformer Winding Deformation Based on VFTO
Sensors, 2021 At present, the detection of transformer winding deformation faults is carried out in an offline state, which requires the transformer to cooperate with the implementation of planned power outages, or it takes place after the sudden failure of the ...
Yanyun Wang +7 more
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