Photovoltaic Power Station Modeling and Its Impact on Distribution Networks

• Published in: 2020 Asia Energy and Electrical Engineering Symposium (AEEES) pp. 550 - 554
• Main Authors: Sun, Kongming, Li, Yudun, Wang, Xin, Li, Naiyong, Fan, Rongqi, Zhang, Guohui, Liu, Meng
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-05-2020
• Subjects: distribution network; distribution network protection; Distribution networks; Mathematical models; Photovoltaic cells; Photovoltaic systems; power flow; Power grids; PV station; short-circuit current; Short-circuit currents; Software
• DOI: 10.1109/AEEES48850.2020.9121502

The integration of Distributed Generation (DG) can affect the distribution network in many aspects, such as power flow, short-circuit current, distribution grid protection, etc. In this paper the influence of a MW photovoltaic (PV) station to a distribution network is mainly studied. The mathematical model and equivalent circuit of a photovoltaic cell are presented in the first part of this paper. Then a 1.6MW PV station model is established in the software of DIgSILENT PowerFactory. This model is not a precise one, but it is more convenient for the research of PV station's affection to a power grid. In the last part of this paper, various simulations are performed to investigate the influence of the PV station to a distribution network. The result shows that the model is capable for our investigation and the influence varies with different operating modes of the PV station.