| 引用本文: | 李东东,罗丁,孙梦显,赵耀,吴祥文,钟伟伦,刘一鸣.适用于VSC-HVDC和PMSG并网系统的宽频振荡稳定性判据及阻尼优化控制[J].电力自动化设备,2025,45(4):110-117 |
| LI Dongdong,LUO Ding,SUN Mengxian,ZHAO Yao,WU Xiangwen,ZHONG Weilun,LIU Yiming.Broadband oscillation stability criteria and damping optimization control for VSC-HVDC and PMSG grid-connected system[J].Electric Power Automation Equipment,2025,45(4):110-117 |
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| 摘要: |
| 为了快速分析和抑制电力电子装置并网系统的宽频振荡，考虑数字控制技术的影响，从离散域角度建立系统的阻抗模型，提出基于Gerschgorin定理的广义禁区判据和基于改进沙丘猫群算法的阻尼优化控制。分析锁相环参数和电流内环参数变化对系统稳定性的影响，并利用阻尼优化控制进行振荡抑制。研究表明锁相环参数和电流内环参数的变化会引起系统发生不同模式的振荡，利用广义禁区判据能够快速有效地分析出系统的稳定性，系统振荡能被阻尼优化控制有效抑制。仿真结果验证了所提判据和阻尼优化控制的准确性和有效性。 |
| 关键词: 宽频振荡 离散域阻抗建模 广义禁区判据 稳定性分析 阻尼控制 |
| DOI：10.16081/j.epae.202405030 |
| 分类号:TM721.1;TM712 |
| 基金项目:国家自然科学基金资助项目(52377111) |
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| Broadband oscillation stability criteria and damping optimization control for VSC-HVDC and PMSG grid-connected system |
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LI Dongdong, LUO Ding, SUN Mengxian, ZHAO Yao, WU Xiangwen, ZHONG Weilun, LIU Yiming
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College of Electrical Power Engineering, Shanghai University of Electric Power, Shanghai 200090, China
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| Abstract: |
| In order to quickly analyze and suppress the broadband oscillation for the grid-connected system of power electronic devices, considering the effects of digital control technology, the impedance model of the system is established from the perspective of the discrete domain, the generic forbidden region criterion based on Gerschgorin theorem and the damping optimization control based on the improved sand cat swarm optimization are proposed. Then, the effects of variation of phase-locked loop(PLL) parameter and current inner loop parameter on the system stability are analyzed, and the oscillations are suppressed by utilizing the damping optimization control. It is shown that the variation of PLL parameter and current inner loop parameter will cause different modes of system oscillation, the system stability can be analyzed quickly and effectively by using the generic forbidden region criterion, and the system oscillation can be suppressed effectively by the damping optimization control. Finally, the accuracy and effectiveness of the proposed criterion and damping optimization control are validated through simulative results. |
| Key words: broadband oscillation discrete-domain impedance modeling generic forbidden region criterion stability analysis damping control |
