Research on VFTO Simulation Analysis of 1000 kV GIS Test Circuit Considering Dynamic Arcing Model

Zhang, Yanze; Chen, Xiaoyue; Cui, Han; Si, Junjie; He, Zhong; Wan, Baoquan; Dai, Min; Wang, Lei; Liu, Jianben

doi:10.1109/tia.2022.3193908

Cited by 9 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…VFTO is generated during the operation of circuit breakers and disconnectors within GIS. It has a very short rise time in the range of 4 to 100 ns, and high-frequency oscillations in the range of a few hundred kilohertz to about a few tens of megahertz [10][11] . VFTO not only causes stress on the internal insulation of the GIS and the primary pieces of equipment but also causes stress on the secondary pieces of equipment and overvoltage across adjacent pieces of equipment.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Very Fast Transient Overvoltage in a Nuclear Plant 500kV GIL-GIS System

Yin¹,

Li²,

Zhang³

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The simulation models of the 500kV gas-insulated transmission lines (GIL) and gas-insulated substation (GIS) systems in a realistic nuclear plant are presented in the paper. The Very Fast Transient Overvoltage (VFTO) which is generated during switching operations, is analyzed. Some affecting factors on the level of the VFTO are investigated. These factors are the location of the power source, the entrance capacitance of the potential transformer (PT), and the capacitive voltage transformer (CVT). At last, some suggestions on overvoltage calculations or calculations of electromagnetic interference sources are proposed. The conclusions can be used in insulation designing and analyzing the electromagnetic interference on the secondary system in nuclear plants and substations.

show abstract

Section: Introductionmentioning

confidence: 99%