Analysis of the Potential for Use of Floating Photovoltaic Systems on Mine Pit Lakes: Case Study at the Ssangyong Open-Pit Limestone Mine in Korea
Analysis of the Potential for Use of Floating Photovoltaic Systems on Mine Pit Lakes: Case Study at the Ssangyong Open-Pit Limestone Mine in Korea
复制标题
矿坑湖浮动光伏系统的使用潜力分析：韩国双龙露天石灰石矿案例研究
DOI：
10.3390/en9020102
复制
发表时间：
2016
期刊：
影响因子：
3.2
通讯作者：
Yosoon Choi
中科院分区：
文献类型：
--
作者：
Jinyoung Song;Yosoon Choi
最近，采矿业引进了可再生能源技术，以解决在极地地区或其他偏远地区经营的矿山的电力供应问题，并培育能够从枯竭矿山的废弃地点获益的替代工业。然而，由于假定露天矿的地形特征不适合安装任何类型的光伏系统，因此很少关注在矿坑湖上运行的浮动光伏系统的潜在放置。本研究分析了韩国矿井湖上浮动光伏系统的潜力，以打破这种误解。使用鱼眼镜头相机和数字高程模型，进行遮阳分析，以确定适合安装浮动光伏系统的区域。考虑光伏板的最佳倾角和阵列间距，设计了浮动光伏系统的布局。采用美国国家可再生能源实验室的系统顾问模型（SAM），根据天气数据和系统设计进行能源模拟。结果表明，该光伏发电系统年发电能力为971.57 MWh/年。经济分析（考虑到贴现率和20年的使用寿命）表明，净现值为897,000美元，投资回收期约为12.3年。因此，我们可以知道，浮动光伏系统在矿坑湖上的经济效果相对高于韩国其他废弃矿山的光伏系统。经分析，其年温室气体减排量为471.21 tCO2/年，是废矿区森林恢复减排效果的2倍。因此，在废弃矿山的坑湖上建立浮动光伏系统的经济可行性，可以被认为是废弃矿山的有效再利用选择。
Recently, the mining industry has introduced renewable energy technologies to resolve power supply problems at mines operating in polar regions or other remote areas, and to foster substitute industries, able to benefit from abandoned sites of exhausted mines. However, little attention has been paid to the potential placement of floating photovoltaic (PV) systems operated on mine pit lakes because it was assumed that the topographic characteristics of open-pit mines are unsuitable for installing any type of PV systems. This study analyzed the potential of floating PV systems on a mine pit lake in Korea to break this misconception. Using a fish-eye lens camera and digital elevation models, a shading analysis was performed to identify the area suitable for installing a floating PV system. The layout of the floating PV system was designed in consideration of the optimal tilt angle and array spacing of the PV panels. The System Advisor Model (SAM) by National Renewable Energy Laboratory, USA, was used to conduct energy simulations based on weather data and the system design. The results indicated that the proposed PV system could generate 971.57 MWh/year. The economic analysis (accounting for discount rate and a 20-year operational lifetime) showed that the net present value would be $897,000 USD, and a payback period of about 12.3 years. Therefore, we could know that the economic effect of the floating PV system on the mine pit lake is relatively higher than that of PV systems in the other abandoned mines in Korea. The annual reduction of greenhouse gas emissions was analyzed and found to be 471.21 tCO2/year, which is twice the reduction effect achieved by forest restoration of an abandoned mine site. The economic feasibility of a floating PV system on a pit lake of an abandoned mine was thus established, and may be considered an efficient reuse option for abandoned mines.