STATIC CLUSTERING AND EQUIVALENT MODELING METHOD FOR LARGE-SCALE DISTRIBUTED PHOTOVOLTAIC SYSTEMS IN DISTRIBUTION NETWORKS FOR LOW-VOLTAGE RIDE-THROUGH SCENARIOS

Wang Baisheng; Miao Shihong; Tan Haoyu; Yao Fuxing; Zhang Di; Li Chenghao

doi:10.19912/j.0254-0096.tynxb.2024-2012

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (3) : 722-731. DOI: 10.19912/j.0254-0096.tynxb.2024-2012

STATIC CLUSTERING AND EQUIVALENT MODELING METHOD FOR LARGE-SCALE DISTRIBUTED PHOTOVOLTAIC SYSTEMS IN DISTRIBUTION NETWORKS FOR LOW-VOLTAGE RIDE-THROUGH SCENARIOS

Wang Baisheng^1,2, Miao Shihong^1,2, Tan Haoyu^1,2, Yao Fuxing^1,2, Zhang Di³, Li Chenghao³

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Abstract

Aiming at the increasing number of off-grid problems caused by low-voltage ride-through of distributed PV, this paper proposes a static clustering and equivalent modeling method of large-scale distributed PV in distribution networks for low-voltage ride-through scenarios. Firstly, we analyze the low-voltage ride-through switching characteristics of distributed PV, and put forward the low-penetration off-grid risk indices considering the electrical distance and installed capacity of each distributed PV; secondly, we take the low-penetration off-grid risk indices as the basis of clustering, and divide the distributed PV clusters based on the distance cost function and the K-means clustering algorithm; lastly, according to the principle of aggregation of the distributed PV parameters, we adopt the REI lossless network equivalence and the Ward network equivalence to lossless the distribution network. and conduct simulation in PSASP for case comparison, the results show that： large-scale distributed PV static clustering and equivalent modeling method for distribution network oriented to the low-voltage ride-through scenario can significantly improve the transient simulation accuracy.

Key words

distributed power generation / PV power / clustering / off-grid risk / parameter aggregation / equivalent modeling

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Wang Baisheng, Miao Shihong, Tan Haoyu, Yao Fuxing, Zhang Di, Li Chenghao. STATIC CLUSTERING AND EQUIVALENT MODELING METHOD FOR LARGE-SCALE DISTRIBUTED PHOTOVOLTAIC SYSTEMS IN DISTRIBUTION NETWORKS FOR LOW-VOLTAGE RIDE-THROUGH SCENARIOS[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 722-731 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2012

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