STABILITY ANALYSIS OF GRID-CONNECTED PV POWER GENERATION SYSTEM MODEL CONSIDERING PV PENETRATION

Shen Fu, Li Shiwei, Shan Jieshan, Han Jinmiao, Fu Yu, Zhai Suwei

Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (9) : 571-583.

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (9) : 571-583. DOI: 10.19912/j.0254-0096.tynxb.2024-0875

STABILITY ANALYSIS OF GRID-CONNECTED PV POWER GENERATION SYSTEM MODEL CONSIDERING PV PENETRATION

  • Shen Fu1, Li Shiwei2, Shan Jieshan1, Han Jinmiao2, Fu Yu1, Zhai Suwei3
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Abstract

In light of the influence of photovoltaic penetration on the grid-integrated stability of PV systems, and bearing in mind the fluctuating characteristics of solar power generation as well as the grid's requirements for regulation, this paper proposes a stability analysis approach for a grid - connected model of PV systems that takes photovoltaic penetration into consideration. Firstly, considering the impact of photovoltaic penetration on grid-connected PV systems, a state-space mathematical model of PV systems is established based on the dynamic model of grid-connected PV systems. Then, the state-space mathematical model of PV systems is optimized using fractional-order differential equations, and the validity of the state-space model is verified by means of step response. Finally, PV grid connection models are constructed based on the IEEE 14-bus and IEEE 33-bus systems, and the PV penetration threshold is determined using the Lyapunov stability criterion and state-space model analysis.

Key words

photovoltaic power generation / state space model / Lyapunov functions / different PV penetration levels / PV penetration threshold / fractional differential equations

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Shen Fu, Li Shiwei, Shan Jieshan, Han Jinmiao, Fu Yu, Zhai Suwei. STABILITY ANALYSIS OF GRID-CONNECTED PV POWER GENERATION SYSTEM MODEL CONSIDERING PV PENETRATION[J]. Acta Energiae Solaris Sinica. 2025, 46(9): 571-583 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0875

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