Original scientific paper

Modelling of power system reliability assessment

Zoran Kovač ; HEP – OPS, Croatian Power Company - Transmission System Operator, Transmission area Osijek, Šetalište k. F. Šepera 1a, 31000 Osijek, Croatia
Goran Knežević ; Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Kneza Trpimira 2b, 31000 Osijek, Croatia
Danijel Topić orcid.org/0000-0003-2100-242X ; Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Kneza Trpimira 2b, 31000 Osijek, Croatia

Abstract

The paper presents the way of modelling a subsystem of the power system from the power supply interruption consumer’s point. Results of reliability assessment indicate significant differences of results depending on the modelling and understanding of the input data. Valid reliability assessment can be performed only with excellent knowledge of the observed system, organization and rules. As an example of calculation, a simple transformer station 110/x kV analysis is performed, considering the standard and improved model. The paper gives an overview of the different Markov models for simple transformer station and comparison of the results of reliability and availability. The improved model presented should contribute to better reliability and availability assessment results of observed subsystems.

Keywords

interface; Markov model; power supply interruption; power system; reliability

Hrčak ID:

97484

URI

https://hrcak.srce.hr/97484

Publication date:

22.2.2013.

Article data in other languages: croatian

Visits: 2.694 *