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TOPOLÁNEK, D. TOMAN, P. ORSÁGOVÁ, J. KOPIČKA, M.
Original Title
The Evaluation of Overvoltage During Short-Time Additional Earthing of Healthy Phase for Fault Location in MV Networks
Type
conference paper
Language
English
Original Abstract
The paper is focused on the operational experience with an automatic system for additional earthing of the faulty or healthy phase during an earth fault. The system is primarily used for limiting of a fault current in the point of the fault by earthing of the faulty phase during an earth fault. The equipment for additional earthing of faulty phase can also be used for short-time connection of healthy phase to earth fault location. There are fast circuit breakers for additional earthing in the substation and the cycle close-open is shorter then time for tripping of overcurrent protection in the outgoing feeder-bay (100 ms). This method of fault location in MV network could bring additional overvoltage which stresses the insulation of MV networks elements. This paper presents the simulation and experimental verification of this phenomenon and gives the recommendation for choosing the healthy phase for minimizing the negative influence of this location technique.
Keywords
earth fault; fault location; overvoltage; earthing; healthy phase
Authors
TOPOLÁNEK, D.; TOMAN, P.; ORSÁGOVÁ, J.; KOPIČKA, M.
RIV year
2014
Released
31. 3. 2014
Publisher
The Institution of Engineering and Technology IET
Location
Six Hills Way Stevenage Hertfordshire SG1 2AY UK
ISBN
978-1-84919-834-9
Book
The 12th International Conference on Developments in Power System Protection DPSP2014
Pages from
1
Pages to
6
Pages count
BibTex
@inproceedings{BUT107279, author="David {Topolánek} and Petr {Toman} and Jaroslava {Orságová} and Marek {Kopička}", title="The Evaluation of Overvoltage During Short-Time Additional Earthing of Healthy Phase for Fault Location in MV Networks", booktitle="The 12th International Conference on Developments in Power System Protection DPSP2014", year="2014", pages="1--6", publisher="The Institution of Engineering and Technology IET", address="Six Hills Way Stevenage Hertfordshire SG1 2AY UK", doi="10.1049/cp.2014.0160", isbn="978-1-84919-834-9" }