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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability >Failure Bunching Phenomena in Electric Power Transmission Systems
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Failure Bunching Phenomena in Electric Power Transmission Systems

机译：电力传输系统中的故障捆绑现象

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摘要

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.
机译：组件所在的物理环境可能会对系统的可靠性产生重大影响。在包含架空传输线的电力系统中尤其如此。极端天气条件会导致传动元件应力水平显着增加，从而导致组件故障率急剧上升。天气恶劣时传输线故障增加的现象通常称为“故障聚集”。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回路传输线来说很重要。本文说明了并行冗余系统可靠性分析中包括的天气条件。介绍了一系列天气模型，并将其应用于输电线路。阐述并研究了在多回路塔架结构中合并共模故障以及在单独的平行线路配置中包含正常，不利和主要不利天气因素的独立事件的可靠性影响。本文介绍的应用在电力传输线中。但是，与应力相关的故障聚集和共模故障的概念适用于多种工程系统。

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