Development of Design Procedures for Transmission Line Structures under High Intensity Wind Events Using a Fluid-Structure Interaction Model

使用流固耦合模型开发高强度风事件下输电线路结构的设计程序

• 批准号: 405771-2011
• 负责人: Hamada, Ahmed
• 金额: $ 3.64万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Vanier Canada Graduate Scholarships - Doctoral
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=515608
• 关键词: Development; Design; Procedures; Transmission; Line

The Northeast Blackout of 2003 demonstrated how heavily our society relies on electricity. A transmission line, which consists of a number of towers supporting electrical conductors, is considered a major component of an electrical system. Failures of transmission lines can lead to power interruption resulting in devastating social and economical consequences. Such failures might cause the loss of lives, a fact proven by the death of 30 individuals during Montreal 1998 ice storm. Most of tower failures around the globe have been attributed to localized High Intensity Wind (HIW) storms in the form of tornadoes and downbursts. Despite this fact and the noticeable increase in these storms, the current codes of practice do not account for the loads resulting from HIW events in the design of transmission lines. As a result, a research project was initiated at the University of Western Ontario (UWO) and was funded by Manitoba Hydro and CEATI, which represents utility companies from 14 countries on 4 continents, to study the effect of HIW events on transmission lines. This research will be extended in the proposed study by developing a novel computer model that can describe the wind fields associated with HIW events, the interaction between the vibrations of the line components and the wind field, and the structural response of the towers and their failure modes. A methodology for designing reliable transmission line systems under HIW events will result from this study and will be proposed to utility companies for implementation in their design guidelines. The study will benefit from the WINDEEE dome facility for models' validation. This unique facility is currently under construction at UWO using a $23M CFI, representing the first in the world in which structures can be tested under downbursts and tornadoes. The study will assist in making Canada a safer place and better prepared for future natural disaster events.

2003年的东北大停电表明了我们的社会对电力的依赖程度。输电线路由许多支撑电导体的塔组成，被认为是电气系统的主要组成部分。输电线路的故障可能导致电力中断，从而造成毁灭性的社会和经济后果。这种故障可能导致生命损失，1998年蒙特利尔冰暴期间30人死亡证明了这一事实。地球仪周围的大多数塔故障都归因于以龙卷风和下击暴流形式出现的局部高强度风（HIW）风暴。尽管这一事实和这些风暴的显着增加，目前的实践守则没有考虑到负载所造成的HIW事件在输电线路的设计。因此，西安大略大学（UWO）发起了一个研究项目，由马尼托巴水电公司和CEATI（代表4大洲14个国家的公用事业公司）资助，研究HIW事件对输电线路的影响。这项研究将在拟议的研究中扩展，开发一种新的计算机模型，可以描述与HIW事件相关的风场，线路组件的振动和风场之间的相互作用，以及塔架的结构响应及其失效模式。根据HIW事件设计可靠的输电线路系统的方法将导致从这项研究，并将提出公用事业公司在其设计指南中实施。研究将受益于WINDEEE圆顶设施的模型验证。这个独特的设施目前正在UWO使用2300万美元的CFI进行建设，这是世界上第一个可以在下击暴流和龙卷风下测试结构的设施。 这项研究将有助于使加拿大成为一个更安全的地方，并为未来的自然灾害事件做好更好的准备。