电力自动化系统UPS供电方案可靠性  

Reliability Analysis of UPS for Power System

作　　者：王钢[1] 丁茂生[1] 李晓华[1] 廖志伟[1] 

机构地区：[1]华南理工大学电力学院,广东省广州市510640

出　　处：《电力系统自动化》2005年第3期40-44,共5页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(50107004;50337010)霍英东青年教师基金资助项目(81048)。

摘　　要：不间断电源(UPS)紧急供电系统是电力自动化系统安全可靠运行的根本保证,因此有必要对其可靠性进行定量评估分析。文中将UPS系统分为13个功能模块,并根据各模块特点,建立了相应的精确多状态Monte-Carlo可靠性数学模型,创建了基于模块的UPS系统故障树。在此基础上提出了基于时序Monte-Carlo仿真的UPS系统可靠性指标求解及灵敏度分析方法。以一实际UPS系统为例,应用所提出的方法对其可靠性进行评估,获得了最优的可靠性增强措施。该方法不仅适用于电力自动化系统UPS供电方案,也适用于其他各种紧急供电系统的可靠性定量分析。As the UPS system is of vital importance to ensuring the reliability of the automatic system in an electric power system, it is necessary to evaluate its reliability quantitatively. By dividing the UPS system into 13 modules, the accurate multi-states Monte-carlo reliability model of each module and the UPS system's fault tree are set up. The time sequence Monte-carlo method is proposed to calculate the reliability indices and reliability sensitivity. The proposed approach has been used to calculate the reliability index of a typical UPS system and the optimum method is found to increase its reliability. The techniques can contribute to the reliability evaluation of different UPS schemes.

关 键 词：UPS紧急供电方案 可靠性评估 敏感性分析 电力系统 

分 类 号：TM76[电气工程—电力系统及自动化]