Failure Bunching Phenomena in Electric Power Transmission Systems
Failure Bunching Phenomena in Electric Power Transmission Systems
复制标题
电力传输系统中的故障聚集现象
DOI：
--
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
J. Acharya
中科院分区：
文献类型：
--
作者：
R. Billinton;G. Singh;J. Acharya
组件所在的物理环境会对系统的可靠性产生重大影响。这在包含架空输电线路的电力系统中尤其如此。极端天气条件会导致传输元件应力水平显着增加，从而导致组件故障率急剧增加。恶劣天气期间输电线路故障增加的现象通常被称为“故障群”。这种情况不应被误解为共模故障。这是一种完全不同的现象，对于单塔结构上的多电路传输线来说非常重要。本文阐述了将天气条件纳入并行冗余系统的可靠性分析中。提出了一系列应用于输电线路的天气模型。说明和检查了在多电路塔结构中合并共模故障以及在分离的并行线路配置中合并正常、不利和主要不利天气因素的独立事件的可靠性影响。本文描述的应用是电力传输线。然而，与应力相关的失效聚集和共模失效的概念适用于广泛的工程系统。
The physical environment in which a component resides can have a significant effect on the resulting reliability of the system. This is particularly true in electric power systems containing overhead transmission lines. Extreme weather conditions can create significant increases in transmission element stress levels leading to sharp increases in the component failure rates. The phenomenon of increased transmission line failures during bad weather is generally referred to as ‘failure bunching’. This condition should not be misconstrued as a common mode failure. This is an entirely different phenomenon and one that is important for multi-circuit transmission lines on single tower structures. This paper illustrates the inclusion of weather conditions in the reliability analysis of parallel redundant systems. A series of weather models are presented with application to electric transmission lines. The reliability effects of incorporating common mode failures in multi-circuit tower structures and independent events incorporating normal, adverse, and major adverse weather considerations in separated parallel line configurations are illustrated and examined. The applications described in this paper are to electric power transmission lines. The concepts of stress related failure bunching and common mode failures are, however, applicable to a wide range of engineering systems.