Evaluation Method for Hosting Capacity of Rooftop Photovoltaic Considering Photovoltaic Potential in Distribution System

Yilin Xu, Jie He, Yang Liu, Zilu Li, Weicong Cai and Xiangang Peng ()
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Yilin Xu: Department of Electrical Engineering, School of Automation, Guangdong University of Technology, Guangzhou 510006, China
Jie He: Shantou Power Supply Bureau of Guangdong Power Grid Corporation, Shantou 515041, China
Yang Liu: Shantou Power Supply Bureau of Guangdong Power Grid Corporation, Shantou 515041, China
Zilu Li: Department of Electrical Engineering, School of Automation, Guangdong University of Technology, Guangzhou 510006, China
Weicong Cai: Department of Electrical Engineering, School of Automation, Guangdong University of Technology, Guangzhou 510006, China
Xiangang Peng: Department of Electrical Engineering, School of Automation, Guangdong University of Technology, Guangzhou 510006, China

Energies, 2023, vol. 16, issue 22, 1-23

Abstract: Regarding the existing evaluation methods for photovoltaic (PV) hosting capacity in the distribution system that do not consider the spatial distribution of rooftop photovoltaic potential and are difficult to apply on the actual large-scale distribution systems, this paper proposes a PV hosting capacity evaluation method based on the improved PSPNet, grid multi-source data, and the CRITIC method. Firstly, an improved PSPNet is used to efficiently abstract the rooftop in satellite map images and then estimate the rooftop PV potential of each distribution substation supply area. Considering the safety, economy, and flexibility of distribution system operation, we establish a multi-level PV hosting capacity evaluation system. Finally, based on the rooftop PV potential estimation of each distribution substation supply area, we combine the multi-source data of the grid digitalization system to carry out security verification and indicator calculation and convert the indicator calculation results of each scenario into a comprehensive score through the CRITIC method. We estimate the rooftop photovoltaic potential and evaluate the PV hosting capacity of an actual 10 kV distribution system in Shantou, China. The results show that the improved PSPNet solves the hole problem of the original model and obtains a close-to-realistic rooftop photovoltaic potential estimation value. In addition, the proposed method considering the photovoltaic potential in this paper can more accurately evaluate the rooftop PV hosting capacity of the distribution system compared with the traditional method, which provides data support for the power grid corporation to formulate a reasonable PV development and hosting capacity enhancement program.

Keywords: PV hosting capacity; satellite map image; rooftop photovoltaic potential; Pyramid Scene Parsing Network; CRITIC method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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