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Line Surge Arresters Applications On The Multi Circuit Overhead Lines

S. Sadović ; Sadovic Consultant FRANCE
T. Sadović ; Sadovic Consultant FRANCE

Sažetak

This paper presents application of line surge arresters (LSA) on the different voltage level
multi circuit overhead lines. Double circuit shielded compact line with and without distribution circuit
on the same tower is analyzed.
Distribution circuit has lower insulation level, meaning that almost all flashovers will happen
on that circuit. Flashovers on the distribution circuit help to improve lightning performance of the
transmission circuits. Flashovers on the distribution circuit diverts fraction of the lightning current
along its phase conductors, improving at the same time coupling between distribution and transmission
circuits.
All software simulations are performed using sigma slp software package. A short description
of the modeling for multi circuit flashover rate determination is given.
In order to prevent flashovers on the distribution circuit LSA are installed on this circuit only.
The improvement in the transmission circuit lightning performance is similar to that obtained without
LSA. LSA installed on the distribution circuit are much cheaper than transmission LSA.
KEYWORDS

Ključne riječi

Multi circuit line; line lightning performance; line surge arrester; multi circuit outage rate

Hrčak ID:

198502

URI

https://hrcak.srce.hr/198502

Datum izdavanja:

20.6.2017.

Posjeta: 626 *