考虑分散式暂态阻尼的构网型变流器多机并联系统振荡抑制策略

毛睿; 苏小玲; 赵正奎; 陈来军; 裴玮

doi:10.19912/j.0254-0096.tynxb.2025-0562

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (8) : 456-466. DOI: 10.19912/j.0254-0096.tynxb.2025-0562

考虑分散式暂态阻尼的构网型变流器多机并联系统振荡抑制策略

毛睿¹, 苏小玲¹, 赵正奎¹, 陈来军^1,2, 裴玮^1,3

作者信息 +

OSCILLATION SUPPRESSION STRATEGY FOR GRID-FORMING CONVERTERS WITH MULTI-MACHINE PARALLEL CONSIDERING DECENTRALIZED TRANSIENT DAMPING

Mao Rui¹, Su Xiaoling¹, Zhao Zhengkui¹, Chen Laijun^1,2, Pei Wei^1,3

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文章历史 +

摘要

受惯量、阻尼等参数差异的影响,在运行环境变化情况下构网型变流器（GFM-VSC）多机并联系统极易出现功率频率振荡问题。首先基于小信号模型,通过根轨迹和伯德图分析引发构网型变流器多机并联系统功率频率振荡的主要诱因及机理;其次,根据状态反馈理论,提出分散式暂态阻尼控制策略,通过角频率补偿和电磁功率补偿提升单台构网型变流器阻尼并引入附加互阻尼转矩,缩小多机并联系统的角频率差,提升多机并联系统的协同性;最后,采用李雅普诺夫函数证明了控制策略的正确性,并通过仿真和实验验证了所提控制的可行性和有效性。

Abstract

Influenced by the difference of inertia, damping and other parameters, the grid-forming voltage-source converters （GFM-VSC） operating in parallel with multiple machines is very susceptible to power-frequency oscillations under the change of operating environment. In this paper, firstly, based on the small-signal model, the root trajectory and Bode diagram are used to determine the main causative factors and mechanisms triggering the power-frequency oscillations of the grid-type converter multi-machine paralleling system. Secondly, according to the state feedback theory, a decentralized transient damping lifting control strategy is proposed to improve the damping of a single GFM-VSC by angular frequency compensation and electromagnetic power compensation. On this basis, the additional mutual damping torque is introduced to reduce the angular frequency difference of the multi-GFMVSC and improve the system coordination. Finally, the correctness of the control strategy is proved by using the Lyapunov functions, and the feasibility and effectiveness of the proposed control is verified by simulation and experimental results.

导出引用

毛睿, 苏小玲, 赵正奎, 陈来军, 裴玮. 考虑分散式暂态阻尼的构网型变流器多机并联系统振荡抑制策略[J]. 太阳能学报. 2026, 47(8): 456-466 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0562

Mao Rui, Su Xiaoling, Zhao Zhengkui, Chen Laijun, Pei Wei. OSCILLATION SUPPRESSION STRATEGY FOR GRID-FORMING CONVERTERS WITH MULTI-MACHINE PARALLEL CONSIDERING DECENTRALIZED TRANSIENT DAMPING[J]. Acta Energiae Solaris Sinica. 2026, 47(8): 456-466 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0562

中图分类号： TM761

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