Voltage Reduction in Medium Voltage Distribution Systems Using Constant Power Factor Control of PV PCS

Daisuke Iioka, Takahiro Fujii, Toshio Tanaka, Tsuyoshi Harimoto and Junpei Motoyama
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Daisuke Iioka: Department of Electrical Engineering, Graduate School of Engineering, Tohoku University, Miyagi 980-8579, Japan
Takahiro Fujii: Department of Electrical Engineering, Graduate School of Engineering, Tohoku University, Miyagi 980-8579, Japan
Toshio Tanaka: Kyushu Electric Power Co., Inc., Fukuoka 815-8720, Japan
Tsuyoshi Harimoto: Kyushu Electric Power Co., Inc., Fukuoka 815-8720, Japan
Junpei Motoyama: Kyushu Electric Power Co., Inc., Fukuoka 815-8720, Japan

Energies, 2020, vol. 13, issue 20, 1-17

Abstract: Reverse power flow from a photovoltaic (PV) system in a distribution system causes a voltage rise. A relative study regarding the reduction in the distribution feeder voltage depending on system conditions and the magnitude of reverse power flow has been conducted. Several methods for mitigating voltage rise have been proposed; however, the influence of these methods on the voltage in the distribution system, where the voltage is reduced due to reverse power flow, remains to be determined. In this study, the effect of constant power factor control in low-voltage PV systems, which are widely used as voltage rise countermeasures in distribution systems, was analyzed under the condition that the distribution line voltage decreases due to reverse power flow. Consequently, the constant power factor control of the low-voltage distribution system was found to adversely reduce voltage in the medium voltage distribution system due to the consumption of lagging reactive power by the PV systems.

Keywords: distributed power generation; photovoltaic systems; power quality; power distribution; power system analysis computing; power system measurements; reactive power; reverse power flow; voltage fluctuations; voltage regulation (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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