VIRTUAL INERTIA OPTIMAL CONFIGURATION FOR NEW ENERGY POWER SYSTEMS CONSIDERING NODE FREQUENCY SECURITY CONSTRAINTS

Zhang Bo; Wu Xuan; Zhang Chengjian; Wang Lei

doi:10.19912/j.0254-0096.tynxb.2024-2334

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (5) : 48-57. DOI: 10.19912/j.0254-0096.tynxb.2024-2334

VIRTUAL INERTIA OPTIMAL CONFIGURATION FOR NEW ENERGY POWER SYSTEMS CONSIDERING NODE FREQUENCY SECURITY CONSTRAINTS

Zhang Bo¹, Wu Xuan¹, Zhang Chengjian¹, Wang Lei²

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Abstract

Aiming at the problem of significant spatial differences in the frequency response process of each node in the new energy power system, in order to improve the frequency stability of the system, a virtual inertia optimal configuration method considering node frequency security constraints is proposed. Firstly, the frequency disturbance rejection capability of each node is analyzed by using the node equivalent inertia index, and the spatial distribution characteristics of the system inertia are quantitatively characterized. Furthermore, the system frequency response model with synchronous generators and renewable power resources is established, and the system COI frequency index and node frequency index are calculated. Then, the equivalent inertia of the node is introduced into the objective function, and the virtual inertia optimal configuration model considering the COI frequency security constraint and the node frequency security constraint is established respectively, and the evaluation standard of the equivalent inertia adequacy of the node is proposed. Finally, the improved IEEE 39-bus system simulation example analysis shows that the virtual inertia optimal configuration considering the node frequency security constraint can improve the system frequency response performance and realize the system inertia level evaluation at the node level.

Key words

virtual inertia / frequency stability / frequency spatial characteristics / optimal configuration / equivalent inertia of nodes / node inertia evaluation

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Zhang Bo, Wu Xuan, Zhang Chengjian, Wang Lei. VIRTUAL INERTIA OPTIMAL CONFIGURATION FOR NEW ENERGY POWER SYSTEMS CONSIDERING NODE FREQUENCY SECURITY CONSTRAINTS[J]. Acta Energiae Solaris Sinica. 2026, 47(5): 48-57 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2334

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