Izvorni znanstveni članak

Lightning Performance Improvement Of 123 kV Line Ston – Komolac By Use Of Line Surge Arresters

M. Puharić ; Croatian Energy Regulatory Agency, CROATIA
M. Mesić ; HEP - Transmission System Operator Ltd., CROATIA
M. Lovrić ; HEP - Transmission System Operator Ltd., CROATIA
J. Radovanović ; HEP - Transmission System Operator Ltd., CROATIA
S. Sadović ; Sadovic Consultant, FRANCE

Sažetak

This paper presents HEP - Transmission System Operator Ltd. Line surge arrester (LSA)
application pilot project on the Ston – Komolac 123 kV line.
This 44 km long single circuit shielded transmission line operates in the region with a high
lightning activity (keraunic level about 70 thunder days). In addition, it was very difficult to obtain
good footing resistance. For these reasons, considered line used to have very bad lightning
performance.
It was decided to install Line surge arresters for line lightning performance improvement. In
order to optimize arrester installation configuration sigma slp software simulations were performed.
LSA are installed according to the results of the software simulations.
LSA are installed in summer 2007 (110 gapless, IEC-class II Line arresters). Sixty one LSA
are equipped with Excount - II monitoring sensors (monitoring arrester leakage current and peak of the
impulse current).
Based on the 8-month experience, LSA installation has improved line lightning performance.
New line performance is close to the targeted once (improvement by 50 to 60 %). Surge arrester
monitors collect very interesting information. Collected info will be compared with the software
simulations.

Ključne riječi

Line surge arrester. Lightning performance improvement. Tower footing resistance

Hrčak ID:

198501

URI

https://hrcak.srce.hr/198501

Datum izdavanja:

20.6.2017.

Posjeta: 546 *