Strategy for Enhancing Hosting Capacity of Distribution Lines Using a Vertical Photovoltaic System

Seungmin Lee, Euichan Lee, Junghun Lee, Seongjun Park and Wonsik Moon ()
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Seungmin Lee: KEPCO Research Institute, 11 Hyeoksinsandan 1-gil, Naju 58277, Republic of Korea
Euichan Lee: KEPCO Research Institute, 11 Hyeoksinsandan 1-gil, Naju 58277, Republic of Korea
Junghun Lee: KEPCO Research Institute, 11 Hyeoksinsandan 1-gil, Naju 58277, Republic of Korea
Seongjun Park: Department of Electrical Engineering, Soongsil University, 369 Sangdoro, Seoul 06978, Republic of Korea
Wonsik Moon: Department of Electrical Engineering, Soongsil University, 369 Sangdoro, Seoul 06978, Republic of Korea

Energies, 2024, vol. 17, issue 6, 1-16

Abstract: Renewable energy sources are being increasingly deployed to achieve carbon neutrality, thereby boosting photovoltaic (PV) system adoptions. Accordingly, vertical PV systems designed for specific installations have been developed. We propose a strategy to enhance the PV hosting capacity of a connected distribution line (DL) by combining vertical installations with modules facing east-west and conventional PV systems with modules facing south at an installation angle of approximately 30°. The data were obtained from a real testbed located in South Korea, which is situated in a mid-latitude region. We analyzed the generation patterns of vertical and combined PV systems (vertical and conventional) to enhance the hosting capacity. The results showed that vertical PV combination ratios of 40–60% effectively flattened the peak generation curve. Additionally, the DL hosting capacity improved by 40% under real-world conditions. In an actual industrial scenario, the system feasibility was validated to be within the voltage maintenance range and thermal capacity of lines in South Korea, indicating that this approach can mitigate the need for additional line installations and renewable energy curtailments. Furthermore, the issue of Duck Curves in the power grid can be addressed by smoothing the power production of the PV systems, particularly during low-demand periods.

Keywords: photovoltaic (PV); vertical photovoltaics; distribution line; hosting capacity; operational data (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: 2024
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