Abstract

Induced capacitive voltage and current in high voltage GIS substation is one of the most significant phenomena that may have made some problems in this substation operation. At this study the various equipment of 420 KV Karoon4 substations such as powerhouses, input and output lines, bus-bar and bus-duct have simulated by applying EMTP-RV software. Then with the different condition of single-phase and three-phase faults on the lines in critical conditions, capacitive induction voltage and current by parallel capacitor with circuit breaker is surveyed. The results show the value of this induced current and voltage and that this critical conditions the breakers and dis-connector switches must be able to interrupt this value of current.

Keywords:

Gas Insulated Substation (GIS), induced current, induced voltage,

References

1. Hyundai Heavy Industrial, 2011. Switching Capability of 420kV Disconnecting Switch, Hyundai Heavy Industrial Co. Ltd., Electro Electri System Div./Electro-Mechanical Research Institute.
   
2. Kondalu, M., S.R. Gillella and P.S. Subramanyam, 2001. Estimation of transient over voltages in gas insulated busduct from 220kv gas insulated substation. Int. J. Comput. Appl., 8(1): 0975-8887.
   
3. Kumar, V.V., J.M. Thomas and M.S. Naidu, 2001. Influence of switching conditions on the VFTO magnitudes in a GIS. IEEE T. Power Deliver., 16: 539-544.
   CrossRef    
4. Liu, Q. and Z. Yufeng, 2008. Influence of switching conditions on very fast transient over-voltage in500kv gas insulated substation. Proceeding of the ICEMS International Conference on Electrical Machines and Systems, pp: 4451-4454.
   
5. Tavakoli, A., A. Gholami, A. Parizad, H.M. Soheilipour and H. Nouri, 2009. Effective factors on the very fast transient currents and voltage in the GIS. Proceeding of the Asia and Pacific.
   CrossRef    
6. Thompson, M.T., 1999. Inductance calculation teqnique-approximations and handbook methods. Power Control Intell. Motion, 25: 40-45.
   

Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.