1. Analysis of the Operational Reliability of Different Types of Switching Substations Using the Monte Carlo MethodFranjo Pranjić, Peter Virtič, 2024, original scientific article Abstract: This study investigates the operational reliability of different types of switching substations within the context of power systems, employing the Monte Carlo method for analysis. The research focuses on evaluating the reliability of high-voltage substations, including single-busbar systems, double-busbar systems, and switchgears with a ring-type power supply. By conducting simulations and analyzing statistical data on device reliability, the study aims to identify the most reliable implementation of switching substations. The results are presented through graphical representations and comparative tables, highlighting the impact of factors such as the number of switching elements and their connection on operational reliability. The findings indicate that configurations with a greater number of busbars and a parallel connection of switching elements exhibit higher operational reliability. The study provides insights to inform decision-making in the construction of new switching substations, emphasizing the importance of stable operation within power systems.
Keywords: switchgear, switching devices, high voltage, operating reliability, unavailability, failure interval
Published in DKUM: 06.11.2025; Views: 0; Downloads: 1
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3. Validation test plan for relays in avtomotive industryUrban Cotič, 2017, master's thesis Abstract: The master’s thesis discusses different approaches how to assure the quality and reliability of high voltage contactors in automotive industry. In the beginning, the history of the development is described, followed by basic knowledge about materials and magnetic theory used in relays. The main part of the thesis is tests defying to qualify the relays for usage in automotive industry. There are different tests, divided in different groups. Second important part is reliability prediction according to standards used in this area of business. Reliability prediction and calculation of failure rate on different contactors are described in last chapters. Calculation also included influence of different factors on life span of the parts. In conclusion, the results are commented and proposal for development is given based on results of the research.
Keywords: Automotive industry, high voltage contactors, testing, reliability, failure rate
Published in DKUM: 07.02.2018; Views: 1592; Downloads: 144
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4. Operation impact of the ICEM power testing laboratory on the Slovenian power networkMarjan Stegne, Jože Pihler, Jože Voršič, 2007, original scientific article Keywords: močnostni laboratoriji, močnostna preskušanja, preskusni tokovi, padci napetosti, simulacije, elektroenergetsko omrežje, high-power laboratory, power testing, test current, voltage drop, simulation, power system
Published in DKUM: 10.07.2015; Views: 1912; Downloads: 41
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