Cascading failure of a simplified transmission tower-line system

有效和高效的能源分配对维持加拿大人的良好生活质量起着至关重要的作用。在马尼托巴省，能源的主要来源是水力发电厂，能源的分配在很大程度上是通过使用输电塔线系统。这些建筑必须经得起该省恶劣天气的考验。单个信号塔的故障会引起相邻多个信号塔的级联损坏，不仅会导致对用户的服务中断，还会造成经济损失。过去对输电塔结构的研究要么强调塔本身，要么强调电缆的性能。没有多少研究项目将输电塔线作为一个整体来考虑。这可能是由于输电塔的详细建模需要大量的计算工作。除了对导线断裂影响的研究外，输电塔线系统的级联故障在过去还没有得到足够的重视。本项目的目的是获得一个简化的输电塔-线系统，该系统可用于输电塔-线系统级联故障的研究。这项研究的结果将帮助设计者了解输电塔线系统的级联行为，以便他们能够更好地优化新输电线路的设计，并评估现有线路的故障风险。

Effective and efficient energy distribution plays a vital role in maintaining a good quality of life for Canadians. In Manitoba, the main source of energy is from hydro-electric plants and the distribution of energy is, for the most part, through the use of transmission tower-line systems. These structures must withstand exposure to the province's harsh weather. Failure of a single tower can cause cascading damage to several adjacent towers and result in not only the disruption of service to the users but also economic losses. Past studies on transmission tower structures have emphasised either the tower itself or the behaviour of the cables. Not many research projects have considered the transmission tower-line as a whole. This may be due to the fact that detailed modeling of a transmission tower requires a vast amount of computational effort. Apart from the studies of the effects of a broken conductor, cascading failure of a transmission tower-line system has not received sufficient attention in the past. The aim of the present project is to attain a simplified transmission tower-line system that can be used in the investigation of cascading failure of transmission tower-line systems. The results of the study will help designers to understand cascading behaviour of transmission tower-line systems so that they are better able to optimize the design of new transmission lines and assess the risk of failure on existing lines.