scholarly journals Modeling of 420 kV GIS Substation and Research on Very Fast Transient Overvoltage (VFTO)

2013 ◽  
Vol 5 (8) ◽  
pp. 2656-2660 ◽  
Author(s):  
Seyed Mohammad Hassan Hosseini ◽  
Zahra Bagheri ◽  
Sajede Darvishi-Niafenderi
Keyword(s):  
Fast Transient ◽  
Transient Overvoltage

Characteristic Analysis on Suppressing VFTO in GIS by Ferrite

2013 ◽  
Vol 834-836 ◽  
pp. 385-389
Author(s):  
Xiang Gen Gan ◽  
Shui Ping Zhong ◽  
Sheng Wei ◽  
Dong Bao Yang
Keyword(s):  
Wave Propagation ◽  
Power Systems ◽  
Traveling Wave ◽  
Low Voltage ◽  
Characteristic Analysis ◽  
Fast Transient ◽  
Transient Overvoltage ◽  
Great Harm

When disconnecting switches were operated,Very Fast Transient Overvoltage (VFTO) did great harm to power systems and their equipments in Gas Insulated Substations (GIS). Although VFTO can be suppressed by a few of known methods, there were some problems. Low voltage simulation tests show that putting ferrite rings around a disconnecting generatrix can damp traveling wave propagation and suppress VFTO in GIS. This method is economic and practical. We had analyzed ferrite characteristics of suppressing VFTO and got hold of ways of calculating ferrite size in GIS. Investigation shows that ferrite characteristics and sizes have a great effect on suppressing VFTO.

Influence of the Switching Speed of the Disconnector on Very Fast Transient Overvoltage

2013 ◽  
Vol 28 (4) ◽  
pp. 2080-2084 ◽  
Author(s):  
Shu Yinbiao ◽  
Han Bin ◽  
Lin Ji-ming ◽  
Chen Weijiang ◽  
Ban Liangeng ◽  
...  
Keyword(s):  
Switching Speed ◽  
Fast Transient ◽  
Transient Overvoltage

Aging characteristics of epoxy resin discharged by very fast transient overvoltage in SF6

2017 ◽  
Vol 24 (2) ◽  
pp. 1178-1188 ◽  
Author(s):  
Qing Xie ◽  
Jie Ren ◽  
He Huang ◽  
Kexin Fu ◽  
Cheng Zhang ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Fast Transient ◽  
Transient Overvoltage

Time and frequency characteristics of very fast transient overvoltage in ultra high voltage substation

2017 ◽  
Vol 24 (4) ◽  
pp. 2459-2468 ◽  
Author(s):  
Guo-Ming Ma ◽  
Cheng-Rong Li ◽  
Xiong Li ◽  
Hong-Yang Zhou ◽  
Wei-Jiang Chen ◽  
...  
Keyword(s):  
High Voltage ◽  
Frequency Characteristics ◽  
Fast Transient ◽  
Transient Overvoltage ◽  
Ultra High Voltage
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