Results 21 to 30 of about 7,424,343 (94)
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
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 In recent years, gas‐insulated switchgear (GIS) substations have become widely used in power systems. Due to their compact structure, extremely high oscillation frequencies are prone to extremely high oscillation transient overvoltages or very fast transient overvoltages (VFTOs) when the isolating switch or circuit breaker is operated.
Caiquan Wen +8 more
wiley +1 more source
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 When a very fast transient overvoltage (VFTO) propagates in a high‐voltage bus, the capacitive voltage transformer (CVT) causes considerable interference on its secondary side, which will affect the normal operation of the secondary equipment. In this article, a CVT equivalent calculation circuit model was established, and the disturbance voltage of ...
Hanliang Lin +6 more
wiley +1 more source
Suppressing resonance in transformer winding under very fast transient overvoltage
, 2016 This paper presents a new method for suppressing internal resonance in power transformers connected to gas insulated substation (GIS) due to very fast transient overvoltage (VFTO) in the GIS.
Ahmed Abu-Siada (23287114) +1 more
core +2 more sources
Analysis of influential factors in determining very fast transient overvoltages of GIS substations [PDF]
, 2014 High voltage Gas Insulated Substation (GIS) is threatened by Very Fast Transient Overvoltage (VFTO) which is high amplitude and high frequency transient within the range from 100 kHz up to 50 MHz in power systems. Operation of Disconnecting Switch is the
Nourirad, Ghasem +5 more
core +1 more source
Study on transient voltage distribution characteristics of transformer windings [PDF]
, 2020 Very fast transient overvoltage (VFTO) with large waveform steepness and high amplitude can cause great harm to winding insulation of transformers and other equipment connected to it.
Ying,, Zang +3 more
core +1 more source
Research on Conducted Disturbance to Secondary Cable Caused by Disconnector Switching Operation
Frontiers in Energy Research, 2022 The disconnector switching operation in GIS not only generates very fast transient overvoltage (VFTO) in primary equipment, but also couples to the secondary system, which affects normal operation of the secondary equipment.
Xiaoyue Chen +6 more
doaj +1 more source
Very Fast Transient Overvoltage Analysis on 245 kV Gas Insulated Substation
, 2022 Gas-insulated Substations play an important role in power systems today but are adversely affected by the generation of Very Fast Transient Overvoltages (VFTO).
Anuj Paul +4 more
core +1 more source
, 2017 © 1994-2012 IEEE. This paper investigates the feasibility of a cost effective method to prevent internal resonance in power transformers connected to gas insulated substation (GIS) due to very fast transient overvoltage (VFTO) within the GIS.
Abu-Siada, Ahmed +3 more
core +2 more sources
The Journal of Engineering, Volume 2019, Issue 16, Page 2921-2925, March 2019., 2019 An accurate computational model of transformer winding for potential distribution analysis under impulse voltage is very important for the design of transformer inter‐turn insulation, especially for large capacity transformers such as ultrahigh‐voltage DC (UHVDC) converter transformer.
Shuang He +7 more
wiley +1 more source