Results 11 to 20 of about 188 (115)
High VoltageThe submodule in multilevel modular converters experiences a very fast transient overvoltage (VFTO) during switch operation of gas‐insulated switchgear, which also results in overvoltage on power devices, such as thyristors and insulated gate bipolar ...
Hong Shen +7 more
doaj +3 more sources
High Voltage, 2023 The switching operation of gas insulated switchgear (GIS) disconnector will produce multiple random spark discharges between the gas gaps of the disconnector.
Zihan Teng +7 more
doaj +2 more sources
Investigating the Effect of Several Model Configurations on the Transient Response of Gas-Insulated Substation during Fault Events Using an Electromagnetic Field Theory Approach [PDF]
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
doaj +3 more sources
The Journal of Engineering, 2019 This study analyses a gas insulated switchgear explosion accident caused by a failure of the circuit breaker (CB) in a thermal power plant, which resulted in the explosion of the CB and the burning of the potential transformer (PT).
Xun Zhang +6 more
doaj +2 more sources
Modelling and validation of metal oxide surge arrester for very fast transients
High Voltage, 2018 Metal oxide surge arrester models that are currently on rounds suffer from certain deficiencies and as a consequence, they are not in position to portray accurately the arrester residual voltages.
Kannadasan Raju, Valsalal Prasad
doaj +2 more sources
Outdoor Insulation and Gas Insulated Switchgears [PDF]
, 2023 This book focuses on theoretical and practical developments in the performance of high-voltage transmission line against atmospheric pollution and icing.
core +1 more source
Restrike characteristics of vacuum circuit breaker in its opening process under DC voltage
IET Science, Measurement &Technology, Volume 17, Issue 8, Page 297-307, October 2023., 2023 In this paper, a withstand voltage test platform of 40.5‐kV vacuum circuit breaker was established to obtain the effects of the contact spacing and loop and inrush currents of vacuum circuit breaker on the number of restrike, the wavefront steepness of the breakdown voltage, and the breakdown duration.
Jixing Sun +8 more
wiley +1 more source
Upper bound of overvoltage peak induced in power line network above lossless ground due to radiated electromagnetic disturbances [PDF]
, 2023 This paper deals with the assessment of the maximal peak of the overvoltage induced in a power-line network due to the field-to-wire coupling from an external electromagnetic disturbance.
Liang, Tao +3 more
core +1 more source
A low‐cost and high‐performance self‐trigger method for high‐voltage transient measurement
High Voltage, Volume 8, Issue 2, Page 412-420, April 2023., 2023 Abstract Stable triggering of acquisition devices is critical to accurately measure electromagnetic transients, especially for very fast transient overvoltages (VFTOs). A highly stable and low‐cos t self‐trigger method for transient measurement is proposed.
Hao Liu +8 more
wiley +1 more source
High Voltage, Volume 7, Issue 1, Page 165-175, February 2022., 2022 Abstract The collectors of electronic transformers has the problem of electromagnetic incompatibility under the operation of disconnecting switches, which limits their wide application in smart grids. To evaluate the maximum level of disturbance that collectors are able to withstand in the stochastic process of switching operation, this work introduces
Qi Wang +6 more
wiley +1 more source