Due to increasing loads, electrification, and growing integration of distributed energy resources, inadequate voltage conditions are becoming increasingly common in low voltage distribution networks. Addressing these issues typically requires reinforcement of the existing network or construction of new low and medium voltage infrastructure, which is associated with high investment costs, extensive interventions in the environment, and lengthy planning and implementation procedures. This master’s thesis investigates the use of alternative technologies for improving voltage conditions without the immediate need for conventional network reinforcement. The operating principles, characteristics, and potential applications of a magnetic voltage stabilizer, a line voltage stabilizer with thyristor assisted on load tap changing, and a battery energy storage system are presented. The applicability of these technologies is analysed in three existing low-voltage networks operated by Elektro Gorenjska. Based on network topology, simulation calculations, and available measurement data, the existing voltage conditions are evaluated and different improvement options are considered. For each network, conventional reinforcement measures and the integration of the selected alternative technology are analysed, with emphasis on comparing the technical, implementation and investment aspects of the individual solutions.
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