Title :
Reliability of uninterruptible power supply systems
Author_Institution :
Fernmeldetechnisches Zentralamt der Deutschen Bundesposts, Darmstadt, West Germany
Abstract :
After discussing basic ideas concerning the reliability of UPS (uninterruptible power supply) systems, the authors present reliability parameters and formulae, reliability formulae for down-times of short mains, reliability formulae for down-times for long mains, and reliability formulae for the entire power supply system. To give an idea of the reliability values that can be reached in uninterruptible power supply systems and of the factors by which these values are affected, a number of examples are calculated by means of the derived formulae
Keywords :
reliability; uninterruptible power supplies; UPS; down-times; mains; reliability; uninterruptible power supply; Availability; Batteries; Control systems; Density estimation robust algorithm; Feeds; Power grids; Power supplies; Power system reliability; Switches; Uninterruptible power systems;
Conference_Titel :
Telecommunications Energy Conference, 1989. INTELEC '89. Conference Proceedings., Eleventh International
Conference_Location :
Florence
DOI :
10.1109/INTLEC.1989.88301
