Reliability analysis of an industrial power system with on-site generation

The paper presents the reliability analysis for a combined power generation and distribution system of a petrochemical complex. The production facilities expansion required addition of generation units and extension of the network. The analysis has been performed for both situations - before and after addition of generation units and extension of the network. The results of the analysis have been compared with indicative figures from the international standards. The outcomes show that the availability of the industrial power system is high, both in the existing configuration and also after implementation of the expansion project. The analysis indicates that possible long-term failures of the distribution system may be caused only by transformer failures. Improvements to the supply concept have also been tested and their impact on the overall reliability indices evaluated.