PRE-SYNCHRONIZATION CONTROL PI PARAMETER TUNING AND APPLICATION SCHEME ORIENTED TOWARD POWER-FREQUENCY FLUCTUATION SUPPRESSION

Ma Jiajun; Yao Ruizhe; Li Yongkang; Wang Ning; Zhao Zhixuan; Wang Xiaoyi

doi:10.19912/j.0254-0096.tynxb.2025-1085

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (12) : 253-263. DOI: 10.19912/j.0254-0096.tynxb.2025-1085

PRE-SYNCHRONIZATION CONTROL PI PARAMETER TUNING AND APPLICATION SCHEME ORIENTED TOWARD POWER-FREQUENCY FLUCTUATION SUPPRESSION

Ma Jiajun¹, Yao Ruizhe², Li Yongkang², Wang Ning¹, Zhao Zhixuan¹, Wang Xiaoyi¹

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Abstract

To address the challenges associated with PI parameter tuning and the complexity of engineering implementation in pre-synchronization control of virtual synchronous generators （VSG） with virtual power integration, this paper proposes a PI parameter tuning and application scheme based on a bi-level optimization model, with a focus on suppressing coupled power-frequency fluctuations. To achieve a balance between power-frequency stability and synchronization speed, a simulation-algorithm bi-level optimization framework is established, where an improved particle swarm optimization algorithm is utilized to optimize the PI parameters of the pre-synchronization controller. Furthermore, to enhance the practical applicability of the control strategy, an ‘offline optimization-online lookup’ approach is designed for PI parameter deployment. Simulation results show that the proposed scheme reduces the maximum frequency fluctuation of the inverter output during pre-synchronization by 26.5% and the maximum power fluctuation by 52.1%, thereby verifying the effectiveness of the proposed method.

Key words

microgrid / virtual synchronous generator / pre-synchronization / bi-level optimization / parameter tuning and application

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Ma Jiajun, Yao Ruizhe, Li Yongkang, Wang Ning, Zhao Zhixuan, Wang Xiaoyi. PRE-SYNCHRONIZATION CONTROL PI PARAMETER TUNING AND APPLICATION SCHEME ORIENTED TOWARD POWER-FREQUENCY FLUCTUATION SUPPRESSION[J]. Acta Energiae Solaris Sinica. 2026, 47(12): 253-263 https://doi.org/10.19912/j.0254-0096.tynxb.2025-1085

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