基于三端口NSC的构网型风储一体化系统

孟庆天; 任永峰; 杭雨祺; 刘会强; 贺彬; 刘小恺

doi:10.19912/j.0254-0096.tynxb.2024-1626

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (1) : 345-353. DOI: 10.19912/j.0254-0096.tynxb.2024-1626

基于三端口NSC的构网型风储一体化系统

孟庆天^1,2, 任永峰², 杭雨祺³, 刘会强^1,2, 贺彬², 刘小恺¹

作者信息 +

GRID-FORMING WIND-STORAGE INTEGRATED SYSTEM BASED ON THREE-PORT NINE SWITCH CONVERTER

Meng Qingtian^1,2, Ren Yongfeng², Hang Yuqi³, Liu Huiqiang^1,2, He Bin², Liu Xiaokai¹

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文章历史 +

摘要

针对传统虚拟同步机（VSG）控制下直驱风电机组主动支撑不足、故障穿越工况下易产生电流越限和功率振荡问题,提出基于三端口九开关变换器的构网型风储一体化系统,实现电力电子设备高度集成和有效功率支撑,通过风储协同功率优化分配避免风电机组转速大范围变动,始终保持在最大功率跟踪点运行。为提升风储一体化系统故障穿越能力,以变流器最大耐受电流为边界条件改进VSG控制策略,与储能装置配合提升无功支撑强度和直流侧电压稳定水平,消纳因电流约束而无法送出的不平衡功率,降低电流越限风险。于Simulink平台建立系统模型并设置风速波动、电网频率扰动和电压故障3种不同工况进行验证,仿真结果表明：所提拓扑结构及控制策略可实现风功率实时跟踪,具备良好的主动支撑和故障穿越能力。

Abstract

To address the issues of insufficient active power support, overcurrent, and power oscillations that easily occur in direct-drive wind turbine under traditional virtual synchronous generator （VSG） control during fault ride-through conditions, a grid-forming wind-storage integrated system based on a three-port nine-switch converter is proposed. This system achieves high integration of power electronic devices and effective power support, and optimizes power distribution between wind and storage to avoid large variations in wind turbine speed, maintaining operation at the maximum power point. To enhance the fault ride-through capability of the wind-storage integrated system, the VSG control strategy is improved with the maximum converter current as the boundary condition, enhancing reactive power support and DC-side voltage stability with the aid of the energy storage device. This approach also helps absorb the unbalanced power that cannot be delivered due to current constraints, reducing the risk of current limit violations. A system model is established in Simulink, and the proposed topology and control strategy are validated under three different scenarios： wind speed fluctuations, grid frequency disturbances, and voltage faults. Simulation results indicate that the proposed topology and control strategy enable real-time wind power tracking and provide strong active power support and fault ride-through capability.

导出引用

孟庆天, 任永峰, 杭雨祺, 刘会强, 贺彬, 刘小恺. 基于三端口NSC的构网型风储一体化系统[J]. 太阳能学报. 2026, 47(1): 345-353 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1626

Meng Qingtian, Ren Yongfeng, Hang Yuqi, Liu Huiqiang, He Bin, Liu Xiaokai. GRID-FORMING WIND-STORAGE INTEGRATED SYSTEM BASED ON THREE-PORT NINE SWITCH CONVERTER[J]. Acta Energiae Solaris Sinica. 2026, 47(1): 345-353 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1626

中图分类号： TM713

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