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首页> 《中国测试》期刊 >本期导读>考虑风切变的风电场尾流模型实验研究

考虑风切变的风电场尾流模型实验研究

274    2020-01-19

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作者:赵飞1, 李兵兵2, 蔚步超3, 高晓霞2, 苑津莎1

作者单位:1. 华北电力大学电气与电子工程学院, 河北 保定 071003;
2. 华北电力大学能源动力与机械工程学院, 河北 保定 071003;
3. 河北龙源风力发电有限公司, 河北 张家口 075000


关键词:尾流模型;垂直高度平面;风切变效应;激光雷达


摘要:

针对当前一维和二维尾流模型只能预测平坦地形风电场内风力机轮毂中心高度平面内的风速分布问题,该文基于Jensen模型,考虑风切变效应和高斯分布特点,提出一种预测复杂风电场内垂直高度平面风速分布的尾流模型。为分析垂直高度平面内尾流分布特点和验证所提出模型的准确性,采用两台不同类型的地基式多普勒激光雷达在河北某风电场进行测风实验。实验数据表明由于风切变效应的影响,垂直高度平面内尾流风速分布呈现非对称分布特点。与此同时,通过对比两个不同下风向位置处实测数据和尾流模型预测风速,结果表明新提出的尾流模型可以很好地预测垂直高度平面风速分布特点,与实测数据吻合度高,符合真实的尾流流场分布。


Experimental study on wake model of wind farm considering wind shear
ZHAO Fei1, LI Bingbing2, YU Buchao3, GAO Xiaoxia2, YUAN Jinsha1
1. School of Electrical & Electronic Engineering, North China Electric Power University, Baoding 071003, China;
2. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China;
3. Hebei Longyuan Wind Power Limited Company, Zhangjiakou 075000, China
Abstract: Current one-dimensional and two-dimensional wake models can only predict the wind speed distribution in the plane of the wind turbines’ hub height in wind farms with flat terrain. Based on Jensen model, a wake model predicting wind speed distribution at vertical height direction in complex terrain wind farm is proposed in this paper, which considers the wind shear effect and the Gauss distribution characteristics. In order to analyze the characteristics of the wake distribution in the vertical height plane and verify the accuracy of the proposed model, a field measurement using two different types of ground-based Doppler LiDARs was conducted in a wind farm located in northern Hebei province. The measured wind data show that the wake velocity distribution in the vertical height plane exhibits an asymmetric distribution, which is caused by the wind shear effect. Meanwhile, the wake velocity predicted by the wake model at two different downwind positions was compared with the measured data, and results show that the newly proposed wake model can accurately predict the wind speed distribution in vertical height plane, which is in good agreement with the measured data, and is consistent with real distribution of the wake flow field.
Keywords: wake model;vertical height plane;wind shear effect;LiDAR
2020, 46(1):154-159  收稿日期: 2019-07-06;收到修改稿日期: 2019-09-05
基金项目: 国家自然科学基金项目(51606068)
作者简介: 赵飞(1982-),男,河北保定市人,讲师,博士,主要从事风电机组建模与风电功率预测、新能源与智能配电网方面的工作
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