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18 July 2023 Low-frequency oscillation suppression method of low inertia power system based on auxiliary inertia
Yuanqing Liang, Shanshan Cheng, Linglin Meng, Shengyang Lu, Bing Feng, Haixin Wang, Junyou Yang
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Proceedings Volume 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023); 127222O (2023) https://doi.org/10.1117/12.2679584
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 2023, Hangzhou, China
Abstract
The low inertia power systems with high proportional power electronic inverters cannot provide sufficient inertia to maintain system balance. The inverters based on virtual synchronous generators (VSG) can provide virtual inertia to the grid. However, when the damping effect is not significant, the rotor motion characteristics brought about by the VSG may cause low frequency power oscillations. To solve this problem, a low-frequency oscillation suppression method (AI-VSG) for low-inertia power systems based on auxiliary inertia is proposed in this paper. Firstly, a power frequency control model of the grid-connected inverter system is developed. Next, the response performance of VSG and AI-VSG is compared and theoretically verified. Finally, as shown in the Bode diagram, the proposed method significantly attenuates power oscillations and improves the inertial response, even in the presence of poor system damping. The simulation results validate the effectiveness of the proposed oscillation suppression method.
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Yuanqing Liang, Shanshan Cheng, Linglin Meng, Shengyang Lu, Bing Feng, Haixin Wang, and Junyou Yang "Low-frequency oscillation suppression method of low inertia power system based on auxiliary inertia", Proc. SPIE 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 127222O (18 July 2023); https://doi.org/10.1117/12.2679584
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KEYWORDS
Control systems
Power grids
Signal attenuation
Mathematical modeling
Device simulation
Design and modelling
Systems modeling
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