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http://dx.doi.org/10.5762/KAIS.2020.21.7.20

Evaluation algorithm for Hosting Capacity of PV System using LDC Method of Step Voltage Regulator in Distribution Systems  

Lee, Se-Yeon (Department of Electrical Engineering, Korea University of Technology and Education)
Lee, Hu-Dong (Department of Electrical Engineering, Korea University of Technology and Education)
Tae, Dong-Hyun (Department of Electrical Engineering, Korea University of Technology and Education)
Rho, Dae-Seok (Department of Electrical Engineering, Korea University of Technology and Education)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.7, 2020 , pp. 20-28 More about this Journal
Abstract
According to the 3020 RE (renewable energy) policy of the Korean Government, distributed generators, including PV (photovoltaic) and WP (wind power) systems, have been installed and operated in distribution systems. On the other hand, if large-scale PV systems are interconnected in a distribution system, the spread of PV systems may be postponed due to a reduction of the hosting capacity in PV systems because of the over-voltage phenomena at the customer end by violating the allowable voltage limits. Under these circumstances, this paper proposes an evaluation algorithm of the hosting capacity of a PV system based on the LDC (line drop compensation) method of SVR (step voltage regulator) to improve the hosting capacity when large-scale PV systems are installed in a distribution system. Moreover, this paper presents a modeling of a complex distribution system, which is composed of a large-scale PV system and SVR with the LDC method using PSCAD/EMTDC. The simulation results confirmed that the proposed algorithm and modeling are useful and practical tools for improving the hosting capacity of a PV system because the customer voltages are maintained within the allowable voltage limits even if 6.5[MW] of the PV system is installed in a distribution system with the LDC method of SVR.
Keywords
Hosting Capacity; PV System; SVR; LDC Method; Distribution System; Evaluation Algorithm;
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Times Cited By KSCI : 2  (Citation Analysis)
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