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Availability Calculation and Simulation of Optical Network Systems

机译:光网络系统的可用性计算和仿真

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摘要

Highly reliable and available systems in all-optical networks require the implementation of various types of redundancy. For reliability and availability analysis systems can be described by reliability block diagrams or diagrams describing system state transitions. Analytical calculations for characteristic reliability and availability parameters such as mean time to failure or average availability for complex, repairable systems containing redundancies rapidly become costly and intractable. Monte Carlo simulation and Markov process calculations are therefore deployed. Results of simulations and calculations show sufficient accuracy and high flexibility for sensitivity analysis. Sensitivity analysis is the quantitative identification of system parts dominating the overall system availability by systematical variation of calculation input data, i.e. failure and repair rates. This gives valuable input for possible system optimization comprising technical and economical aspects. This contribution investigates mean time to failure, mean unavailability and mean down time of an optical cross connect described by a complex reliability block diagram. In addition a sensitivity analysis is performed. All Monte Carlo simulations and Markov calculations are done by using a commercial software tool.
机译:全光网络中高度可靠且可用的系统需要实施各种类型的冗余。对于可靠性和可用性分析,可以通过可靠性框图或描述系统状态转换的图来描述系统。特征可靠性和可用性参数(例如平均故障时间或包含冗余的可修复系统的平均可用性)的分析计算迅速变得昂贵且棘手。因此部署了蒙特卡洛模拟和马尔可夫过程计算。仿真和计算结果表明,灵敏度分析具有足够的准确性和高度灵活性。灵敏度分析是通过系统性地改变计算输入数据(即故障率和维修率)来确定主导整个系统可用性的系统零件的数量。这为包括技术和经济方面的可能的系统优化提供了有价值的输入。该贡献调查了复杂的可靠性框图所描述的光交叉连接的平均故障时间,平均不可用性和平均停机时间。另外,进行敏感性分析。所有的蒙特卡洛模拟和马尔可夫计算都是使用商业软件工具完成的。

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