基于数值模拟的南四湖风能资源初步评估

基于气象站与测风塔的区域风能资源评估具有较大局限性, 前者无法获得风机轮毂高度处的风速资料, 评估精度较低, 后者难以获得较长时间观测资料, 对平均风速的年际变化反映不足, 且评估成本较高。选取南四湖周边地区为研究对象, 基于 WRF 构建该地区数值天气预报模式, 在 NCEPFNL 资料的驱动下实现南四湖地区 2000-2016 年的小时风场模拟。提取 80 m 高度处风场模拟信息, 通过年平均风速、年平均风功率密度、年可利用小时数、 年内风速分布、主风向等指标, 对该地区风能资源进行了初步评估, 认为该地区风能资源具备一定开发利用价值, 且靠近南水北调东线泵站群等能源消耗中心, 有利于风电的就地消纳, 为该地区风能资源详查和开发利用提供了一定的参考。 The assessment methods of regional wind resources based on meteorological stations and anemometer towers have some limitations. The former does not have access to the wind speed data of the fan wheel, and has low evaluation precision. The latter has difficulty in getting long-time observation data, cannot provide sufficient description of the interannual variability of the average wind speed, and has high evaluation cost. In this article, we selected the surrounding area of Nansi Lake as the object of study , constructed the numerical weather forecast mode of this region based on WRF, and realized the simulation of hourly wind field around Nansi Lake from 2000 to 2016. Extracting the simulation information of wind field at 80m height, we conducted preliminary evaluation of the wind energy resources in this region by studying the annual average wind speed, annual average wind power density, annual available hours, annual wind speed distribution, and prevailing wind direction. We held that the wind energy resources in this region have certain develo pment and utilization value. As it is close to the energy consumption centers such as the pumping stations group of the East Route of the South-to-North Water Transfer Project , the wind electricity can be used locally . This paper provides certain reference for checking and utilizing wind energy resources in this region. “十三五”国家重点研发计划项目( 2016YFC 0402201) ; 中国水利水电科学研究院基本科研业务费专项项目( ZJBKYKY1753) ; 国家自然科学基金青年基金( 51709271)