Přístupnostní navigace
E-application
Search Search Close
Publication detail
TOMAN, P. TOPOLÁNEK, D. ORSÁGOVÁ, J. DVOŘÁK, J.
Original Title
The Influence of Additional Earthing of Healthy Phase for Earth Fault Location on Safety of Compensated Networks
Type
conference paper
Language
English
Original Abstract
A connection between a phase conductor and the ground in a compensated MV networks is called an earth fault. Since the fault current in this case does not depend on the point of the fault, but only on the total capacity (size) of a network, earth fault location remains a problem for MV network operators. The MV compensated Networks in Czech Republic are operated as nonsymmetrical, that means as networks with non-transposed lines. Some of them are operated with additional earthing of faulted phase for increasing the safety in the point of the fault. The equipment of additional earthing of faulted phase is also able to connect healthy phase for short time. There are fast circuit breakers for additional earthing in the substation and the cycle close-open is shorter than time for tripping of an overcurrent protection in the outgoing feeder-bay (100ms). The paper deals with analysis of the touch voltages in the point of the fault during fault location and describes the experiment in real distribution network.
Keywords
earth fault, safety, compensated network, earthing, location
Authors
TOMAN, P.; TOPOLÁNEK, D.; ORSÁGOVÁ, J.; DVOŘÁK, J.
RIV year
2013
Released
10. 6. 2013
Publisher
CIRED
Location
Stockholm (Sweden)
ISBN
978-1-84919-732-8
Book
CIRED 2013 22nd International Conference on Electricity Distribution
Pages from
1
Pages to
4
Pages count
BibTex
@inproceedings{BUT102760, author="Petr {Toman} and David {Topolánek} and Jaroslava {Orságová} and Jaromír {Dvořák}", title="The Influence of Additional Earthing of Healthy Phase for Earth Fault Location on Safety of Compensated Networks", booktitle="CIRED 2013 22nd International Conference on Electricity Distribution", year="2013", pages="1--4", publisher="CIRED", address="Stockholm (Sweden)", doi="10.1049/cp.2013.1173", isbn="978-1-84919-732-8" }