基于Wiener模型的风力发电系统变桨距控制

doi:10.16182/j.issn1004731x.joss.22-0284

系统仿真学报 ›› 2022, Vol. 34 ›› Issue (8): 1741-1749.doi: 10.16182/j.issn1004731x.joss.22-0284

基于Wiener模型的风力发电系统变桨距控制

徐樾¹(), 贾立¹(), 付轩熠²

^1.上海大学机电工程与自动化学院，上海 200072
^2.南瑞集团有限公司(国网电力科学研究院有限公司)，江苏南京 211106

收稿日期:2022-03-29 修回日期:2022-05-07 出版日期:2022-08-30 发布日期:2022-08-15
通讯作者: 贾立 E-mail:xu_yue0813@163.com;jiali@staff.shu.edu.cn
作者简介:徐樾(1994-)，女，博士生，研究方向为能源互联网系统的建模与控制。E-mail：xu_yue0813@163.com
基金资助:
国家自然科学基金(92067105)

Variable Pitch Control of Wind Power Generation System Based on Wiener Model

Yue Xu¹(), Li Jia¹(), Xuanyi Fu²

^1.College of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, China
^2.NARI Group Co. , Ltd. (State Grid Electric Power Research Institute Co. , Ltd. ), Nanjing 211106, China

Received:2022-03-29 Revised:2022-05-07 Online:2022-08-30 Published:2022-08-15
Contact: Li Jia E-mail:xu_yue0813@163.com;jiali@staff.shu.edu.cn

摘要/Abstract

摘要：

风力发电系统具有非线性强和波动性大的特点，如何在风速随机变化的工况下，快速地将风电机组输出功率控制在额定范围内是风电系统控制面临的重大难题。针对5 MW风电机组的变桨距控制问题，提出一种基于Wiener模型的风力发电系统变桨距控制方案。根据Wiener模型线性和非线性环节可分离的特殊结构，通过计算非线性环节的逆，构造具有线性性质的广义风电系统被控对象，将风电系统非线性变桨距控制问题简化为线性模型控制问题。采用独立可分离信号分步辨识风电机组Wiener模型，可以更加精准地预测风电机组输出功率。仿真实例表明：该控制方法有效地提高了变桨距系统的控制效果。

关键词: 风电机组, 变桨距控制系统, Wiener模型, 分步辨识

Abstract:

Strong nonlinearity and large fluctuation are the characteristics of wind power generation system. Quickly controlling the output power of wind turbines within the rated range under wind speed random changes is the major problem of wind power system control. Aiming at the pitch control of 5 MW wind turbines, a pitch control scheme for wind power generation systems based on the Wiener model is proposed. On the basis of the special structure in which the linear and nonlinear links of the Wiener model can be separated, the controlled object of a generalized wind power system with linear properties is constructed by calculating the inverse of the nonlinear part, which simplifies the nonlinear pitch control problem of the wind power system to a linear model control. The independent separable signal is used to identify the Wiener model of wind turbines by separate steps, which can accurately predict the output power of the wind turbines. The simulation examples show that the control method can effectively improve the control effect of the pitch system.

Key words: wind turbine, pitch control system, wiener model, separate step identification

中图分类号:

TP273

徐樾, 贾立, 付轩熠. 基于Wiener模型的风力发电系统变桨距控制[J]. 系统仿真学报, 2022, 34(8): 1741-1749.

Yue Xu, Li Jia, Xuanyi Fu. Variable Pitch Control of Wind Power Generation System Based on Wiener Model[J]. Journal of System Simulation, 2022, 34(8): 1741-1749.

图/表 10

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图2

图3

表1

NREL海上5MW基准风机模型参数

主要参数	量值
额定功率/MW	5
切入、额定、切出风速/(m/s)	3、 11.4、 25
切入、额定转子速度/(r/min)	6.9、 12.1
固有频率 $ω n$ /(rad/s)	0.88
桨距角机构阻尼系数 $ξ$	0.1
齿轮箱传动比 $N g$	97
风机转动惯量 $J r$ /(kg·m²)	38 768 000
发电机转动惯量 $J g$ /(kg·m²)	534.116
刚度系数 $K θ$ /(N·m/rad)	867 636 000
传动系统阻尼系数 $B θ$ /(N·m/(rad·s^-1))	6 215 000
发电机时间常数 $τ g$	0.1
空气密度 $ρ a$ /(kg·m³)	1.225
风轮半径 $R r$ /m	63
发电机效率 $η$ /%	94.4

表1

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图8

图9

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基于Wiener模型的风力发电系统变桨距控制

Variable Pitch Control of Wind Power Generation System Based on Wiener Model

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