Research on Acceleration Methods for Electromagnetic Transient Simulation of Large-scale Photovoltaic Power Plants

Le résumé fourni par la source

Large-scale photovoltaic power plants are currently the mainstream trend in photovoltaic development, supporting the realization of China’s “dual carbon” goals. However, the large number of power generation units has highlighted the contradiction between “complex model calculations” and “limited simulation resources,” making it extremely difficult to perform detailed real-time simulations. This paper proposes a unit-level detailed modeling method for real-time simulation of large-scale photovoltaic power plants. First, the working principle of photovoltaic arrays is analyzed. The original “voltage-to-current” circuit calculation form is rewritten as an iterative update form of “historical current source and change quantity.” Combined with electrical parameter and historical source slow-change correction, this achieves low computational complexity modeling. Second, a converter switch function model is used to divide the matrix calculation, with the DC circuit calculated independently and the AC circuit nodes eliminated to obtain the overall admittance equivalent circuit model of the power generation unit. Finally, the accuracy of the proposed model is verified on the RTDS platform, enabling real-time simulation of a photovoltaic power plant with hundreds of power generation units.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.