This thesis analyses the reliability of the electricity distribution system in Slovenia, which
represents a key element for ensuring economic stability and the functioning of critical
infrastructure. The aim of the work is to carry out a comprehensive assessment of technical
reliability indicators over the last ten years and to evaluate network performance.
The methodology is based on the interpretation of classical reliability indicators. The work also includes a comparative analysis between the distribution and transmission systems in Slovenia, as well as an international comparison within the European Union and with systems on other continents.
The results indicate a general improvement in system robustness under normal operating conditions over the observed period, although performance is highly dependent on extreme weather events — as confirmed by two extreme events: the ice storm of 2014 and the floods of 2023. A strong correlation was identified between system resilience and the degree of cable network penetration. The regional analysis of Slovenia revealed specific challenges faced by individual electricity distribution companies, where results are strongly influenced by geographical terrain and network type.
In conclusion, it is highlighted that the future development of distribution companies should be directed towards strategic resilience and digitalisation. The necessity of upgrading the low-voltage level with SCADA systems and increasing investments in rural areas is emphasised. A significant future challenge is also the green transition, where the mass electrification of heating and mobility presents both an opportunity and a strain on existing network infrastructure.
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