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Jae Woo Ko
Department of Electrical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea

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Journal article
Published: 01 September 2017 in Energies
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Underwater grounding methods could be applied in deep water for grounding a floating PV (photovoltaic) system. However, the depth at which the electrodes should be located is a controversial subject. In this study, grounding resistance was measured for the first time by analyzing the water temperature at different water depths in an area where a floating PV system is installed. The theoretical calculation of the grounding resistance has a maximum error range of 8% compared to the experimentally measured data. In order to meet the electrical safety standards of a floating PV system, a number of electrodes were connected in parallel. In addition, the distance between electrodes and number of electrodes were considered in the test to obtain a formula for the grounding resistance. In addition, the coefficient of corrosion was obtained from an electrode installed underwater a year ago, and it was added to the formula. Through this analysis, it is possible to predict the grounding resistance prior to installing the floating PV system. Furthermore, the electrical safety of the floating PV system could be achieved by considering the seasonal changes in water temperature.

ACS Style

Jae Woo Ko; Hae Lim Cha; David Kwang-Soon Kim; Jong Rok Lim; Gyu Gwang Kim; Byeong Gwan Bhang; Chang Sub Won; Han Sang Jung; Dong Hyung Kang; Hyung Keun Ahn. Safety Analysis of Grounding Resistance with Depth of Water for Floating PVs. Energies 2017, 10, 1304 .

AMA Style

Jae Woo Ko, Hae Lim Cha, David Kwang-Soon Kim, Jong Rok Lim, Gyu Gwang Kim, Byeong Gwan Bhang, Chang Sub Won, Han Sang Jung, Dong Hyung Kang, Hyung Keun Ahn. Safety Analysis of Grounding Resistance with Depth of Water for Floating PVs. Energies. 2017; 10 (9):1304.

Chicago/Turabian Style

Jae Woo Ko; Hae Lim Cha; David Kwang-Soon Kim; Jong Rok Lim; Gyu Gwang Kim; Byeong Gwan Bhang; Chang Sub Won; Han Sang Jung; Dong Hyung Kang; Hyung Keun Ahn. 2017. "Safety Analysis of Grounding Resistance with Depth of Water for Floating PVs." Energies 10, no. 9: 1304.