Reliability Modelling of Uninterruptible Power Supply Using Probability Tree Method

Proceedings of the 41st International Universities Power Engineering Conference Pub Date : 2006-09-01 DOI:10.1109/UPEC.2006.367549

Mohd. Khairil Rahmat, S. Jovanovic, K. L. Lo

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引用次数: 3

Abstract

The unreliability of public power lines have led to the need of uninterruptible power supply (UPS). Utility power failures will cause unacceptably high risk to the profitability, existence and growth of the vital aspect of business that depends heavily on uninterrupted power supply. For this reason it is important to develop a method to estimate the reliability of such system, to ensure that it will perform satisfactorily when needed. This paper describes and discusses an approach to predict the reliability parameters of the UPS system using the probability tree method. Important UPS reliability parameters such as failure rates (lambda), mean time between failures (MTBF), and reliability (R), can be obtained from this method. These quantitative reliability parameters can play an essential role in selection and application of the UPS. The method was applied to different topologies of UPS systems and comparisons were made between the results obtained form probability tree method and the reliability block diagram (RBD) method

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基于概率树方法的不间断电源可靠性建模

公共电力线路的不可靠性导致了对不间断电源(UPS)的需求。公用事业电力故障将对严重依赖不间断电力供应的重要业务的盈利能力、存在和增长造成不可接受的高风险。因此，开发一种方法来评估这种系统的可靠性是很重要的，以确保它在需要时能令人满意地运行。本文介绍并讨论了一种用概率树法预测UPS系统可靠性参数的方法。该方法可获得UPS重要的可靠性参数，如故障率(lambda)、平均无故障时间(MTBF)、可靠性(R)等。这些定量的可靠性参数对UPS的选型和应用具有重要作用。将该方法应用于UPS系统的不同拓扑，并将概率树方法与可靠性方框图(RBD)方法得到的结果进行了比较

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the 41st International Universities Power Engineering Conference

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