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[IEEE 2018 26th International Conference on Geoinformatics - Kunming (2018.6.28-2018.6.30)] 2018 26th International Conference on Geoinformatics - Multilevel Solar Potential Analysis of Building Based on Ubiquitous Point Clouds
摘要： Solar potential analysis is essential for Building Information Modeling (BIM) applications, like photovoltaic installation. The estimation of solar potential on rooftops has been widely discussed, whereas the study on fa?ade is still limited. Benefit from the development of various sensors, ubiquitous point clouds are now widely and easily captured by photogrammetry, laser scanning or other technologies, to represent the building geometry. This paper proposes a method for solar potential analysis on both rooftops and fa?ades, using ubiquitous point cloud collected by Unmanned Aerial Vehicle (UAV) and Terrestrial Laser Scanning (TLS). One building with different orientations is selected for the case study. Results show that the proposed method is valid for multilevel solar potential analysis of buildings.
关键词： laser scanning,solar potential,ubiquitous point cloud,Building Information Modeling (BIM)
更新于2025-09-23 15:23:52
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Directional Statistics in Solar Potential of Rooftops at Three Different Neighborhoods of a Medium Size City
摘要： The utilization of solar energy is one of the best effective methods to combat the climate change. The estimation of solar potential in urban areas can vary depending on the urban morphology. This paper performs a directional statistical analysis of the distribution of the monthly solar potential of rooftops in Cáceres city, related to the orientation of the rooftops in different neighborhoods. The orientation values of the roofs will be treated as a directional data and the radiation values as a linear data. The circular graphics representing the orientation data is a suitable representation of the distribution of the buildings being related with the urban framework.
关键词： rooftop orientation,directional data,solar potential,solar radiation
更新于2025-09-23 15:21:21
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Optimizing the inclined field for solar photovoltaic arrays
摘要： Existing studies are focused on maximizing the solar energy collection by photovoltaic modules installed on a flat (horizontal) field. This paper presents an analytical model, which considers the tilt angle of the field along with the modules and evaluates the direct solar energy accumulation within a given time period. Validation of the model is performed by comparing the results with measurements obtained from a computer-aided 3D model. Then, various applications of the model are demonstrated for optimizing field and module tilt angles. The simulations were performed at a virtual site in Auckland (New Zealand; latitude: ~36.86?S). For the given dimensions of the field and the modules, the results showed that nearly horizontal modules collect 35% more energy than when they are at the latitude angle. If they are tilted at the latitude angle, increasing the inclination angle of the field above 16? increases energy collection by 48%. A contour plot of energy collection over the specified ranges of tilt angles was developed to help designers choose the best possible combinations. Finally, the monthly and seasonal energy collections are also presented for modules fixed on an inclined field, tilted at latitude angle.
关键词： constrained field,tilt angle,solar potential,solar irradiance,solar PV,inclined array
更新于2025-09-19 17:13:59
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Potential impact of climate change on solar resource in Africa for photovoltaic energy: analyses from CORDEX-AFRICA climate experiments
摘要： The development of renewable electricity in Africa could be massive in coming decades, as a response to the rapid rising electricity demand while complying with the Paris Agreements. This study shows that in the high-resolution climate experiments of CORDEX-AFRICA, the annual mean solar potential is expected to decrease on average by 4% over most of the continent by the end of the century, reaching up to 6% over the Horn of Africa, as a direct result of decrease in solar radiation and increase in air surface temperature. These projections are associated with large uncertainties, in particular over the Sahel and the elevated terrains of eastern Africa. While the expected decrease may affect the sizing of the numerous solar projects planned in Africa for the next decades, this study suggests that it does not endanger their viability. At last, this study indicates that the design of such projects also needs to account for the non-negligible uncertainties associated with the resource.
关键词： climate change,solar potential,solar radiation change,solar resource assessment,Bayesian ANOVA method,model projections
更新于2025-09-16 10:30:52
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Potential energy saving in urban and rural households of Mexico with solar photovoltaic systems using geographical information system
摘要： The worldwide development of photovoltaic technology has achieved economic maturity, which currently suggests that it can be implemented on a large scale in developing countries. Mexico is a privileged country in terms of its solar resource availability. However, it also has tremendous challenges, which it must encounter in the medium term to promote pollution emission reduction and support strategies contributing to sustainable development. Therefore, in this study, we verified the state-of-the-art implementation of an interconnected photovoltaic system network and reviewed the current legislation for photovoltaic energy in Mexico. Besides, we performed an energy savings analysis for solar photovoltaic technology implementation on a large scale in urban and rural homes in Mexico by using the Geographic Information System. The results showed potential for energy savings with the use of an interconnected photovoltaic system network at a large-scale. Based on the information processed through 187,719 urban and 4,525 rural locations, it could be inferred that in Mexico, each household needs four photovoltaic panels on average to satisfy its energy requirements. Thus, even with implementation in homes alone, the country could achieve energy savings of an estimated 39,750 GWh, equivalent to 20.27 Tg of CO2 avoided emissions, i.e., 3% of the annual national emissions.
关键词： Solar potential,Households,Photovoltaic systems,Geographic information system,Mexico
更新于2025-09-16 10:30:52
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Optimization of Solar Panel Orientation Considering Temporal Volatility and Scenario-Based Photovoltaic Potential: A Case Study in Seoul National University
摘要： University campuses accommodate large numbers of people and are suitable places to organize a microgrid. The solar potential in the university area is estimated and the optimal orientation of solar panels is presented in this study. The optimal orientation is analyzed considering temporal volatility to increase the stability of the grid. Several variables are selected and scenarios are designed to consider various investments and technologies. Scenario-speci?c photovoltaic potentials were estimated using Geographic Information Systems analysis technology. Analysis of temporal volatility was conducted based on the di?erence between demand and supply of electricity. Optimal panel orientations were presented according to project objectives, such as highest e?ciency or low volatility. As a result, the total potential of the study area was tens to hundreds of GWh/year depending on the scenario. The university has an advantage in hourly volatility, but has some problems in monthly volatility. The optimal orientation varies according to objectives and solar power supply ratio. The results of this study are expected to help researchers and technicians in the solar energy industry and assist in urban planning.
关键词： temporal volatility,GIS,scenario,university,optimal panel orientation,solar potential
更新于2025-09-12 10:27:22
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Kalman filter model, as a tool for short-term forecasting of solar potential: case of the Dakar site
摘要： The prediction of solar potential is an important step toward the evaluation of PV plant production for the best energy planning. In this study, the discrete Kalman filter model was implemented for short-term solar resource forecasting one the Dakar site in Senegal. The model input parameters are constituted at a time t of the air temperature, the relative humidity and the global solar radiation. The expected output at time t+T is the global solar radiation. The model performance is evaluated with the square root of the normalized mean squared error (NRMSE), the absolute mean of the normalized error (NMAE), the average bias error (NMBE). The model Validation is carried out by means of the data measured within the Polytechnic Higher School of Dakar for one year. The simulation results following the 20 minute horizon show a good correlation between the prediction and the measurement with an NRMSE of 4.8%, an NMAE of 0.27% and an NMBE of 0.04%. This model could contribute to help photovoltaic based energy providers to better plan the production of solar photovoltaic plants in Sahelian environments.
关键词： Prediction,short-term,solar potential,Dakar,Kalman filter
更新于2025-09-09 09:28:46