The Technique of Installing Floating Photovoltaic Systems

Abstract

In October 2011, a commercialized 100kW class floating photovoltaic system positive plant was installed at Hapcheon dam a multi-purpose reservoir the first time ever in the nation. Floating photovoltaic system differs in water float, mooring device and underwater cable process from land photovoltaic system. As for land and building photovoltaic power generation equipments, many installation cases and skilled experiences are available, and thus installation is not difficult. However, commercial power generation floating photovoltaic system, which is attempted for the first time in the nation, requires to be designed and installed through a series of processes like technical review and verification of data by process in comparison with similar cases. The structure of floating photovoltaic system, an equipment for float photovoltaic module and other electrical equipment, is required to withstand weather environments like wind or typhoon etc and yet not affect water quality negatively, and for implementation of this system, construction efficiency and economy etc should be considered comprehensively. In this paper, the techniques of installing floating photovoltaic structure, mooring device, underwater cable, electrical equipment and remote monitoring control system are explained. The 100kW floating PV system is operating with 15% average capacity factor

A Study on Development of Azimuth Angle Tracking Algorithm for Tracking-type Floating Photovoltaic System

“…On water surface, unlike on ground surface, the entire structure moves and rotates by wind or other environmental variables even if the mooring system is installed, so an error may occur to the azimuth angle [1][2][3][4][5][6][7][8][9][10].…”

“…In floating PV, the external forces including self-weight of the structure is transferred to the water through the buoyancy in the gravitational direction, so the length of the structure that can resist the gravitational direction can be designed with relatively more freedom. Also, as it floats on the water, it can rotate with a small amount of energy even if the unit rotation capacity is large (over 20kW), the structure can be made simpler than ground tracking-type if tracking-type is applied to floating PV system, thus reducing malfunction risk and increasing efficiency [1][2][3][4][5][6][7][8][9][10]. The aim of this paper is to examine types of tracking-type systems for development of a tracking algorithm for maximum power generation in floating condition and to test the developed algorithm through application in the model.…”

Structural Safety Assessment of Ocean‐Floating Photovoltaic Structure Model

“…K‐water additionally installed a 100 kW tracking type floating PV system in a nearby location in December 2013. Recently the corporation has been researching 20 kW ocean‐floating PV systems for the purpose of extending its research and business area from reservoir to sea 1–3…”

Study on Variations in Flooding Volume According to Ratio of Rainfall to Projected Cross-Sectional Area of Photovoltaic Facilities

“…태양광 발전시설은 화력과 원자력 등의 발전시설보다 시설면적이 넓고 기상조건의 영향이 많아 자연조건의 문제 에 따른 발전효율의 저감이나, 인근 주민들과의 갈등 그리고 환경적 및 사회적 문제의 발생 가능성을 제시하였다 (Ahn et al, 2011;Kim et al, 2011;Lee and Kim, 2017). 그리고, 내륙뿐만 아니라 해상에도 태양광 발전시설의 설치를 위한 설계, 시공, 기술, 기상, 입지 등을 고려한 수상 태양광 발전시 설의 연구도 수행되었다 (Choi and Yi, 2013;Choi, 2014;Jin, 2014;Won, 2015;Lee and Lee, 2016).…”