Operation over complex terrains & atmospheric icing events: wind energy critical issues related to security of supply & wind-project evaluation

复杂地形操作

• 批准号: 364706-2007
• 负责人: Masson, Christian
• 金额: $ 5.49万
• 依托单位: École de technologie supérieure
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=406302
• 关键词: Operation; over; complex; terrains; atmospheric

Wind Energy has gained significant interest in the past years among electricity producers and wind turbines are expected to be installed at a high pace for years to come. However, fewer ideal sites are available for these new installations. With construction of wind projects in sites with complex topographies, the risks associated with the success of a wind park have significantly raised. In addition to regular analyses performed during evaluation of a wind park project, the Canadian environment poses two challenges important for security of supply: (i) operation over complex terrains and (ii) atmospheric icing events. With the objective of improving the security of supply related to wind energy production in Canadian settings, the proposed research program is composed of two themes. The first theme is related to the numerical modeling of the atmospheric boundary layer at micro-scales levels over complex terrains. The second one is dedicated to the atmospheric icing climatology of Canada. The first theme main objective is an improvement of the knowledge on the art of numerical modeling of the atmospheric boundary layer over complex terrains at micro-scale levels through fundamental studies of turbulence modeling and terrain representation (resolution, ground cover representation). The simulation code, adapted from the Models for Analysis of Turbine Hydraulics (MATH) platform of Hydro-Quebec (HQ) to atmospheric flows, will be the core of a tool to evaluate the risk and uncertainties associated with a wind park project by drawing exclusion regions where wind turbines should not be installed because local flow bears undesired characteristics such as (i) presence of flow separation, (ii) high levels of turbulence and (iii) strong shear levels. The main objective of the second theme is to provide the wind energy industry with a Canadian atlas of atmospheric icing events that occurred historically, displaying averages and extreme values of parameters that describe atmospheric icing events like frequency, duration, intensity, and wind properties. This detailed information could be used to estimate the energy loss due to such events, as well as the uncertainties on the projected energy yield of a wind project.

在过去的几年里，风能在电力生产商中引起了极大的兴趣，预计风力涡轮机将在未来几年内以高速度安装。然而，可用于这些新安装的理想场所较少。随着风电项目在复杂地形中的建设，与风电场成功相关的风险显著增加。除了在风电场项目评估期间进行的定期分析外，加拿大环境对供应安全提出了两个重要挑战：（i）复杂地形上的操作和（ii）大气结冰事件。为了提高与加拿大风能生产相关的供应安全性，拟议的研究计划由两个主题组成。第一个主题涉及复杂地形上微尺度大气边界层的数值模拟。第二个是致力于加拿大的大气结冰气候学。第一个主题的主要目标是通过湍流建模和地形表示（分辨率，地面覆盖表示）的基础研究，提高对复杂地形大气边界层微观层次的数值建模艺术的知识。模拟代码改编自魁北克水电公司（HQ）的涡轮机水力学分析模型（MATH）平台，适用于大气流，将成为评估与风电场项目相关的风险和不确定性的工具的核心，方法是绘制不应安装风力涡轮机的排除区域，因为局部气流具有不期望的特性，例如（i）存在气流分离，（ii）高湍流水平和（iii）强切变水平。第二个主题的主要目标是为风能行业提供历史上发生的大气结冰事件的加拿大地图集，显示描述大气结冰事件的参数的平均值和极值，如频率，持续时间，强度和风特性。这些详细信息可用于估计此类事件造成的能源损失，以及风电项目预计发电量的不确定性。