NEW PROTECTION CONFIGURATION FOR HIGH QUALITY MV RING DISTRIBUTION SYSTEMS

This paper deals with the protection coordination in particular distribution system, such as hospitals, characterized by the need of high quality energy supply. In the paper, after a brief description of the network schemes and of the selectivity concept, the real case of a hospital whose system had big selectivity problems is discussed. Finally, the paper presents a possible solution to this problem, supported by a correct application of the Italian standard CEI 0-16 and a deeply selectivity study.

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