Reliability Assesment of Data Centers Power System

Consumers of information infrastructure have strong requirements for reliability of power supply. Downtime of services provided by Data Centers leads to irreversible data loss, disruption of financial and industrial enterprises and property loss. At the design stage of power systems, during feasibility study provided by comparing the alternative variants, reliability assessment is performed to estimate the possible property loss caused by failures of power equipment. For electrical installations fed by several power sources of different types and a branched distribution network, calculation of reliability parameters could be a very laborious task. Modern software make it possible to automate such calculations, considering single equipment failures and failures during the commissioning of other equipment, dependent failures of several elements, overhead lines, cables and transformers capacity, duration of manual and automatic backup switching. NEPLAN is the software that performs the tasks listed above. In education, when performing term papers and graduation theses related to design of power supply systems, using modern software improves the quality of design solutions. In this paper, NEPLAN application for reliability assessment of power supply systems is presented. It provides the alternative variants comparing. Calculations were made for Data Centers power system. The assessment presented, with minor changes, could be used for performing feasibility study of main and auxiliary power systems single line diagrams that are required for educational and professional purposes.