Title: Analysis of impact of atmospheric overvoltages in Kosovo power system

Authors: Bahri Prebreza; Isuf Krasniqi; Bujar Krasniqi

Addresses: Faculty of Electrical and Computer Engineering, University of Prishtina, Bregu i Diellit, p.n. 10000 Prishtina, Kosovo ' Faculty of Electrical and Computer Engineering, University of Prishtina, Bregu i Diellit, p.n. 10000 Prishtina, Kosovo ' Faculty of Electrical and Computer Engineering, University of Prishtina, Bregu i Diellit, p.n. 10000 Prishtina, Kosovo

Abstract: In this paper are given aspects of modelling and analysis of atmospheric overvoltages for Kosovo power system. Atmospheric overvoltages are one of the leading causes of outages in Kosovo power system. Analysis of the impact of these overvoltages increases the effectiveness of the functioning process of transmission of electric energy in general and also involves the use of effective protective equipment in power systems like surge arresters, mainly for improving the performance of high-voltage transmission lines. Different location models for the establishment for surge arresters are also discussed. Transmission lines with poorest performance are discussed, regarding the atmospheric overvoltages. For the analysis of these overvoltages is used ATP/EMTP software, to solve efficiently and economically reasonable protection. In the simulation is used the metal-oxide surge arrester nonlinear model, dependent on the frequency. This model is proposed by the IEEE 3.4.11 working group and it has nonlinear V-I characteristic.

Keywords: alternative transient program/electromagnetic transient program; ATP/EMTP; lightning; overvoltages; surge arresters; transmission lines; Kosovo.

DOI: 10.1504/IJPEC.2019.102990

International Journal of Power and Energy Conversion, 2019 Vol.10 No.4, pp.512 - 525

Received: 01 Mar 2018
Accepted: 17 May 2018
Published online: 14 Oct 2019 *

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