Results 1 to 10 of about 75 (59)
A Review of Research Progress in Very Fast Transient Overvoltage (VFTO) Suppression Technology [PDF]
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
doaj +5 more sources
Modeling of 420 kV GIS Substation and Research on Very Fast Transient Overvoltage (VFTO) [PDF]
Research Journal of Applied Sciences, Engineering and Technology, 2013 Seyed Mohammad Hassan Hosseini +2 more
exaly +4 more sources
Development and Experimental Research of VFTO Measuring Sensor [PDF]
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
doaj +2 more sources
Research on On-Line Detection Method of Transformer Winding Deformation Based on VFTO [PDF]
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
doaj +2 more sources
Research and Experiments on an External Miniaturized VFTO Measurement System [PDF]
Sensors, 2019 Disconnect switch and circuit breakers operations in gas insulated switchgear (GIS) systems may produce very fast transient overvoltage (VFTO). Detecting VFTO is the first step for researchers to reduce the damage to other equipment of the substation ...
Lizhe Wang +5 more
doaj +2 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source