| Title |
Analysis of Electrical Charactersitics According to Installation Conditions of Grounding Electrode for Structure use of the Floating Photovoltaic System |
| DOI |
http://doi.org/10.5207/JIEIE.2020.34.8.026 |
| Keywords |
Floating Photovoltaic System; Grounding Resistance; Gound Potential Rise; CDEGS |
| Abstract |
Currently, the exact electrical regulations for the grounding system of floating photovoltaic power generation systems have not been established. Due to the peculiarity of being installed on the water surface, the installation conditions of the ground electrode are different from that of the general photovoltaic power generation facility. Three cases can be installed where the ground electrode of the structure of the floating photovoltaic system is installed in the water, on the waterside, and on nearby land. In consideration of this case, the ground resistance was measured using a fall of potential method for a grounding method that can be applied to a photovoltaic power generation facility. Also, in the typical case, the transient potential rise value by the standard lightning current waveform was analyzed by CDEGS simulation. As a result, the grounding electrode installed in the water became the lowest grounding resistance value and exhibited the lowest transient potential rise. Since it can be installed in parallel due to the characteristics of the floating photovoltaic power generation facility, it is desirable to determine the installation location of the ground electrode in consideration of the electrical characteristics in each case. |