Research on Wind Farm Wake Optimization Strategy Considering Floating Foundation Displacement

doi:10.16628/j.cnki.2095-8188.2023.07.001

Abstract

Abstract:

The wake effect between wind turbines has a direct impact on the power generation,and the modeling and optimization of the wake of floating units are more complex due to their attitude.A wind farm wake optimization strategy based on yaw control is proposed considering the floating foundation displacement.Firstly,considering the influence of floating platform displacement on yaw angle,the Curl wake model is improved.Secondly, the objective function of the relationship between wind farm power generation and wake wind speed and yaw angle is established.Finally,taking the yaw angle as the optimization parameter,optimization is carried out with the Nelder-Mead by the simplex algorithm method to improve the power generation of the wind farm as a whole.Based on NREL 5 MW TLP floating unit, the control strategy is simulated and verified under different working conditions.The results show that the proposed optimization strategy has a more obvious effect on improving the power generation of the floating wind farm than the traditional wake optimization method.

Key words: floating wind turbine, yaw control, wake optimization, power generation improvement

CLC Number:

TM315

ZHU Ruonan, WANG Xiaodong, LIU Yingming, ZHANG Yinghao. Research on Wind Farm Wake Optimization Strategy Considering Floating Foundation Displacement[J]. LOW VOLTAGE APPARATUS, 2023, 0(7): 1-9.

Figures/Tables 12

References 20

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参数	数值
额定功率/MW	5
叶片数量/个	3
传动链	高速、多级变速箱
风轮直径/m	126
轮毂直径/m	3
轮毂高度/m	90
切入风速、额定风速、切出风速/(m·s^-1)	3.0、11.4、25.0
切入叶轮转速、额定叶轮转速/(r·min^-1)	6.9、12.1

工况	湍流强度/%	风向角/(°)	SLSQP算法偏航角/(°)			Nelder-Mead算法偏航角/(°)
工况	湍流强度/%	风向角/(°)	T1机组	T2机组	T3机组	T1机组	T2机组	T3机组
1	10.23	0	9.45	9.46	-3.48	14.98	13.94	0
2	10.23	3	-16.54	-8.21	-2.43	-15.63	-11.38	0.05
3	10.23	6	-12.50	-8.38	-2.05	-10.30	-8.20	0

风向角/(°)	无尾流控制策略风电机组的发电量/MW			SLSQP算法控制策略各个机组发电量/MW			总发电量提高百分比/%	Nelder-Mead算法控制策略各个机组发电量/MW			总发电量提高百分比/%
	T1机组	T2机组	T3机组	T1机组	T2机组	T3机组		T1机组	T2机组	T3机组
	0	2.014	1.366	1.344	1.81	1.394		1.57	1.06	1.861		1.39	1.61	2.92
	3	1.388	1.002	1.044	1.215	1.115		1.182	2.29	1.233		1.09	1.201	2.63
6	1.389	1.243	1.347	1.308	1.301	1.416	1.16	1.315	1.288	1.426	1.28