基于实际运行数据的风电场功率曲线优化方法  

Wind Farm Power Curve Optimization Based on Actual Operating Data

作　　者：饶日晟 叶林[1] 任成[1] 宋旭日[2] 郎燕生[2] 靳晶新 

机构地区：[1]中国农业大学信息与电气工程学院,北京100083 [2]中国电力科学研究院电力自动化所,北京100192 [3]内蒙古自治区水利水电勘测设计院,内蒙古呼和浩特010021

出　　处：《中国电力》2016年第3期148-153,共6页Electric Power

基　　金：国家自然科学基金资助项目(51477174;51174290;51077126);教育部高等学校博士学科点专项科研资助基金(20110008110042);国家电网公司科技项目(DZB51201503568)~~

摘　　要：根据风电场的实际运行数据分析风电场风速与风电场输出功率的统计规律,在传统风速区间划分的基础上提出一种风电场功率曲线的优化方法,通过对每个风速区间分配等量的历史观测数据,采用分段最小二乘线性回归方法对风速与输出有功功率之间的关系进行拟合,建立了风电场基于实际运行数据的优化功率曲线,并利用风电场实测数据对优化功率曲线进行验证分析。算例结果表明,风电场功率曲线优化方法精度较高,能够更准确反映风电场实际运行特性,可为风电场运行特性分析及并网研究提供参考。This paper analyzes the statistical relationship between wind farm’s wind speed and power output using actual operating data. It proposes a methodology to optimize the power output curve for a wind farm based on the traditional wind speed partitioning approach. Historical observation data is equally distributed into each wind speed interval. A piecewise least squares linear regression approach is used to determine the best fir between the wind speed and the power output, and to establish the optimal power output curve using actual operating data. The power output curve is further tested with observed data in real time. Case studies indicate that the power output curve optimization method has high accuracy and can better reflect the actual operating characteristic of a wind farm. The methodology contributes to the study of wind farm operational characteristics and wind power integration research.

关 键 词：电力系统 运行数据 观测数据 风电场 风速-功率特性 分段拟合 最小二乘法 线性回归 优化功率曲线 

分 类 号：TM614[电气工程—电力系统及自动化]