提高海上风电场主动频率支撑能力的控制策略

doi:10.16183/j.cnki.jsjtu.2023.581

上海交通大学学报 ›› 2025, Vol. 59 ›› Issue (10): 1442-1450.doi: 10.16183/j.cnki.jsjtu.2023.581

• 新型电力系统与综合能源 • 上一篇下一篇

提高海上风电场主动频率支撑能力的控制策略

李仪博¹, 周前², 朱丹丹²(), 姜亚峰¹, 吴秋伟³, 陈健¹

¹ 山东大学电气工程学院, 济南 250061
² 国网江苏省电力有限公司电力科学研究院, 南京 211100
³ 清华大学清华深圳国际研究生院, 广东深圳 518055

收稿日期:2023-11-17 修回日期:2024-02-03 接受日期:2024-02-19 出版日期:2025-10-28 发布日期:2025-10-24
通讯作者: 朱丹丹,高级工程师,电话(Tel.):025-68686694;E-mail:zdd_life@126.com.
作者简介:李仪博(2000—),硕士生,从事海上低频风电研究.
基金资助:
国家电网公司总部科技项(4000-202218073A-1-1-ZN)

Control Strategy for Improving Active Frequency Support Capability of Offshore Wind Farm

LI Yibo¹, ZHOU Qian², ZHU Dandan²(), JIANG Yafeng¹, WU Qiuwei³, CHEN Jian¹

¹ School of Electrical Engineering, Shandong University, Jinan 250061, China
² Electric Power Research Institute, State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211100, China
³ Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, Guangdong, China

Received:2023-11-17 Revised:2024-02-03 Accepted:2024-02-19 Online:2025-10-28 Published:2025-10-24

摘要/Abstract

摘要：

在低频交流输电系统中,海上风电场和陆上交流系统之间因频率解耦和信号传输延迟,导致海上风电场无法及时响应陆上电网频率变化.为此,结合系统惯量分析,提出一种提升海上风电场主动频率支撑能力的控制策略.在频率信号传递方面,基于模块化多电平矩阵变换器(M³C)低频侧构网V/f控制策略,结合系统惯量设计附加频率下垂控制器,建立M³C网侧与低频侧的频率耦合关系,从而实现两侧频率信息的实时传递.在频率支撑方面,当系统发生扰动产生频率偏差时,海上风电机组通过附加下垂控制可调整功率指令值,进而为系统提供频率支撑.最后,在MATLAB/Simulink平台中,通过负荷变化和三相交流短路故障的仿真,验证了所提协同控制策略的有效性.

关键词: 低频交流输电系统, 频率耦合, 协同控制策略, 频率支撑

Abstract:

In low frequency alternating current (AC) transmission systems, offshore wind farm is unable to respond to changes in onshore grid frequency in a timely manner due to frequency decoupling and signal transmission delays between the offshore wind power system and the onshore AC system. To address this issue, a control strategy is proposed to improve the active frequency support capability of offshore wind farms by combining the system inertia. In terms of frequency signaling, an additional frequency sag controller is designed based on the V/f control strategy of the low-frequency-side structure network of modular multilevel matrix converter (M³C), combining with the system inertia. The frequency coupling link between the M³C net side and the low-frequency side is established to realize the real-time transmission of frequency information between the two sides. In terms of frequency support, when the system is disturbed to generate frequency deviation, the offshore wind turbine can adjust the power command value through additional droop control, thereby providing frequency support for the system. Finally, the effectiveness of the proposed coordinated control strategy is verified in MATLAB/Simulink by the simulation of load change and three-phase AC short circuit fault.

Key words: low frequency alternating current (LFAC) transmission system, frequency coupling, collaborative control strategy, frequency support

中图分类号:

TM732

李仪博, 周前, 朱丹丹, 姜亚峰, 吴秋伟, 陈健. 提高海上风电场主动频率支撑能力的控制策略[J]. 上海交通大学学报, 2025, 59(10): 1442-1450.

LI Yibo, ZHOU Qian, ZHU Dandan, JIANG Yafeng, WU Qiuwei, CHEN Jian. Control Strategy for Improving Active Frequency Support Capability of Offshore Wind Farm[J]. Journal of Shanghai Jiao Tong University, 2025, 59(10): 1442-1450.

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装置	参数	数值
风电场	额定容量/MW	300
低频系统	额定线电压/kV	35
	额定频率/HZ	20
海缆	长度/km	28
M³C换流站	额定容量/MW	400
	子模块电容/mF	4
	额定电容电压/kV	3
	桥臂模块数/个	100
	桥臂电感/mH	40
	阀额定电压/kV	12
工频系统	额定线电压/kV	35
	额定频率/HZ	50

参数	数值
额定容量/MW	300
机端电压/kV	13.8
惯性时间常数/s	3.2
交轴电抗x_d,x'_d,x″_d	1.305, 0.296, 0.252
直轴电抗x_q,x'_q,x″_q	0.474, 0.243, 0.18
时间常数$\tau {\text{'}}_{d},\tau {″}_{d},\tau {\text{'}}_{q}$	1.01, 0.053, 0.1
励磁调节器增益	300
励磁时间常数/ms	1
原动机调差参数	0.35
伺服时间常数/s	0.5

提高海上风电场主动频率支撑能力的控制策略

Control Strategy for Improving Active Frequency Support Capability of Offshore Wind Farm

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