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Disturbance Voltage Induced on the Intelligent Electronic Device Ports due to Switching Operations in Gas Insulated Substation

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Abstract:

There is great concern on the electromagnetic compatibility problem of electronic equipments in an intelligent substation, due to the compact structure resulted from high degree of integration between the primary electrical equipments and secondary electronic equipments. The very fast transient electromagnetic disturbance (VFTED) resulted from the gas insulated substation (GIS) switching operation has potential impact on the electronic equipments by the electromagnetic coupling between the VFTED and the circuit of “sensor-cable-intelligent electronic device (IED)”. This paper presents both experimental and theoretical results of the disturbance voltage induced on the ports in control cabinets during the disconnectors operating in a 500kV GIS substation. The considered ports are connected to a current transformer (CT) equipped nearby GIS switcher via a KVVP cable. The results show that the peak value, the duration time and the frequency range of the transient waveform are about 400V, 2 μs, and below 40 MHz.

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Periodical:

Applied Mechanics and Materials (Volume 734)

Pages:

653-658

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.734.653

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Online since:

February 2015

Authors:

Jian Fei Ji*, Xiao Fan Liu, Yu Bo Yuan, Yi Fei Yang, Chong Qing Jiao

Keywords:

Electromagnetic Disturbance, GIS Equipment, Intelligent Electronic Device, Switching Operation

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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