EQUIVALENT MODEL RESEARCH OF PHOTOVOLTAIC POWER STATION BASED ON AP CLUSTERING ALGORITHM

Jin Beiyu; Xing Jie; Shan Yinghao; Hou Meiqian; Wan Jinwei

doi:10.19912/j.0254-0096.tynxb.2024-1431

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (12) : 186-194. DOI: 10.19912/j.0254-0096.tynxb.2024-1431

EQUIVALENT MODEL RESEARCH OF PHOTOVOLTAIC POWER STATION BASED ON AP CLUSTERING ALGORITHM

Jin Beiyu¹, Xing Jie¹, Shan Yinghao¹, Hou Meiqian², Wan Jinwei¹

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Abstract

Aiming at the equivalent modeling of concentrated PV power station and the traditional clustering algorithm's over-reliance on the initial clustering centers and the number of clusters, this paper proposes a clustering method for PV power station based on the affinity propagation （AP） algorithm, taking PV arrays with different solar irradiance as the object of study. The AP algorithm adopts the existing data points as the final clustering center, without specifying the initial clustering center and the number of clusters. Considering that the clustering index of PV power units needs to reflect the power output characteristics of PV power units, for this reason, the solar irradiance and the equivalent line impedance are taken as clustering indexes, and then the clustering algorithm is used to cluster the PV power units with different the solar irradiance and the equivalent line impedance into different categories, and the PV power units with similar categories are aggregated. At the same time, equate the parameters of the line impedance and inverters of the PV power station to establish a multi-machine equivalent model. Based on the PSCAD simulation platform, the clustering model of a typical 10 kV centralized PV power station is constructed by using the method of this paper, and the simulation results of the detail model, the AP clustering model, the C-FCM clustering model and the single-machine equivalent model are compared, which verifies the effectiveness of the clustering method of this paper under different solar irradiance of PV arrays.

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solar energy / photoelectric devices / fuzzy clustering / equivalent modeling / PV power station / model validation / dynamic response

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Jin Beiyu, Xing Jie, Shan Yinghao, Hou Meiqian, Wan Jinwei. EQUIVALENT MODEL RESEARCH OF PHOTOVOLTAIC POWER STATION BASED ON AP CLUSTERING ALGORITHM[J]. Acta Energiae Solaris Sinica. 2025, 46(12): 186-194 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1431

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