摘要
为建立准确的风电场稳态模型,该文分区域分析了风电机组的稳态运行特性,提出一种基于实测数据的三机等效风电场稳态建模方法。首先,分析了风电机组在4个不同运行区域的稳态输出特性;然后,根据风电场内各风电机组的实测风速,采用改进型最大树法将其分类,并建立各类机群的实际风速-功率特性曲线;最后,由风电机组各区域稳态输出特性建立各类机群的风速-功率分段函数关系。在此基础上,计算各类机群的等值风速,从而建立三机等效风电场稳态模型。仿真结果表明三机等效模型可有效提高风电场稳态建模的精度。
To establish the steady-state model of a wind farm accurately, a three-machine equivalent steady model is proposed based on the measured data after analyzing the steady-state characteristics of wind turbines in different operation regions. First, this paper analyzes the steady active power characteristics of wind turbines in 4 operation regions. By means of improved maximum tree method, the wind turbines are divided into 3 groups according to the measured wind speed data. Then, the wind speed-active power curve and piecewise function are obtained for each group of turbines based on the 4 operation regions. Finally, a three-machine equivalent steady-state model of a wind farm is established by calculating the equivalent wind speed of the three groups. Simulation results show that the proposed method can effectively improve the accuracy of the steady-state model of a wind farm.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2016年第9期27-35,共9页
Proceedings of the CSU-EPSA
基金
国家自然科学基金资助项目(51277127)
山西省科技攻关项目(20130321027-1)
山西省高等学校中青年拔尖创新人才支持计划资助项目
关键词
实测数据
三机
稳态模型
改进型最大树法
风速-功率特性曲线
measured data
three-machine
steady-state model
improved maximum tree method
wind speed-active power curve
