- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
[IEEE 2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia) - Chengdu, China (2019.5.21-2019.5.24)] 2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia) - Development of Incentive Model for Photovoltaic Generators to Participate in a Day-ahead Electricity Market in South Korea
摘要： This paper presents the incentive model when Photovoltaic (PV) generator participates in a day-ahead market in South Korea. For this, the current supporting policy for PV generation and rules of a day-ahead market are analyzed. Because of the lack of the incentive model for PV supplier in a day-ahead market, Independent System Operation (ISO) can’t consider PV generation when they plan the short-term supply of the system. Therefore, the proposed incentive model is developed to provide the additional profit to encourage PV supplier to participate in the market based on the accuracy of PV generation bidding. To verify incentive model, the actual data including PV generation, System Marginal Price (SMP) and Renewable Energy Certificate (REC) price are used.
关键词： Day-ahead Electricity Market,Photovoltaic (PV),Energy Storage System (ESS),Incentive Model
更新于2025-09-11 14:15:04
-
Physics of Energy Conversion () || 10. Photovoltaic energy conversion
摘要： In a photovoltaic device, solar energy is converted into electricity along a path very different from the one taken in a solarthermal power plant. Here, in a first step the energy of the solar photons is converted into chemical energy in a solid state absorber. This means that the absorber is brought into an electronically excited state involving a reconfiguration of its charge carriers by the generation of electron/hole (e?/h+)-pairs, i.e. by the following reaction: Ground state + ?? → e? + h+. Here, ?? represents a photon with sufficient energy to bring an electron to the excited state. The chemical energy of the charge carrier ensembles in the conduction and valence bands is then converted into electrical energy by spatially separating the e?/h+-pairs via electrical contacts of the absorber which are electron or hole selective, respectively. In general such selective contacts can only be realized by a jump in the material properties between the two contacts, an example for this being a pn-junction. Since under illumination electrons and holes have different electrochemical potentials in the absorber material, this separation leads to a voltage drop between the contacts selective for the different charge carrier types. It is thus the selectivity of the contacts that introduces the built-in asymmetry into the solar cell, making it a usable voltage source (see Section 5.2). This basic working principle is true for all types of solar cells, ranging from conventional solar cells built from crystalline silicon (c-Si) over thin film solar cells fabricated from different materials such as, e.g. Cu(In,Ga)Se2 (CIGS) to organic or dye sensitized solar cells, and is schematically shown in Figure 10.1.
关键词： electricity,solid state absorber,solar energy,photovoltaic,pn-junction,dye sensitized solar cells,organic solar cells,CIGS,thin film solar cells,crystalline silicon,electron/hole pairs
更新于2025-09-11 14:15:04
-
Photovoltaic Roof Tiles: The Influence of Heat Recovery on Overall Performance
摘要： A photovoltaic (PV) roof tile serves both as a roofing material and as an electricity-producing surface. The main aim of the present study was to increase the overall system efficiency of PV tiles by using heat recovery. The chosen strategy was two-fold: determine the operational efficiency of PV tiles and optimize construction to increase the cooling effect when using air as the working medium. A detailed experimental study was undertaken to determine these effects. The results indicated that a combined electrical and thermal efficiency of 24% could be reached. This is promising and proves the potential for air to be the working medium in such systems. Moreover, this shows a direction for future system optimization.
关键词： experimental study,photovoltaic (PV) roof tiles,heat recovery,efficiency performance of electricity generation,solar light simulator
更新于2025-09-11 14:15:04
-
[IEEE 2019 International Conference on Electromechanical and Energy Systems (SIELMEN) - Craiova, Romania (2019.10.9-2019.10.11)] 2019 International Conference on Electromechanical and Energy Systems (SIELMEN) - Analysis of the Aspects of Increasing the Efficiency of Electricity Generation by Photovoltaic Power Plants
摘要： The increase in the share of energy produced from renewable sources in the energy balance presents itself as a strategic problem for world energy sector. The use of solar energy to produce electricity is possible everywhere. The purpose of this work is to analyze the factors that affect the efficiency of electricity production, as well as the development of theoretical aspects of increasing the efficiency of the operation of photovoltaic power plants. The research methodology is based on the complex analysis of the particularities of the conversion of solar radiation into electricity by photovoltaic cells, which are presented through ideal equivalent schemes and equivalent schemes that take into account the impact of temperature, the intensity of solar radiation and the partial shading factor of the photovoltaic cells. As a research tool it is proposed to perform the modeling of the characteristics of current- voltage and voltage - power of the solar panels and platforms with PV panels mounted. It presents the methodological aspects of the analysis of the energy production of the PV plants for different operating conditions, the results of the analysis of the electricity production of the PV plants in the world and the estimation of the influence of the main factors (temperature, the intensity of the solar radiation, the degree of shading) on the deviation of the characteristics of the photovoltaic cells. It has been proposed the concept and the general theoretical aspects regarding the elaboration of the mathematical model of the PV power station, which takes into account the influencing factors on the efficiency of electricity production. It has been shown that in the mathematical model the influence of the sun's motion on the celestial vault can be modeled by varying the intensity of the solar radiation depending on the positioning of the sun.
关键词： characteristics of temperature,share of production,power,influence factors,intensity of solar radiation,electricity,current and voltage
更新于2025-09-11 14:15:04
-
The Paris Agreement 2015 as a Primer for Developing Nigerian Off-grid Solar Electricity
摘要： The Paris Climate Change Agreement 2015 amassed diverse commentaries from renewable energy proponents and environmentalists. For environmentalists, it represents a vindication of environmental multilateralism given that for the first time in the history of international climate change law, over 196 sovereign states voluntarily subscribed to be bound by a treaty in furtherance of mitigation of climate change. In the same vein, renewable energy promoters applaud it for being the needed catalyst that will exfoliate greenhouse gases from the atmosphere by ushering in a new age dominated by renewable energy and other clean energy sources. The Nigerian government has joined the movement by signing the Agreement and undertaking to develop off-grid renewable solar electricity of 13,000 gigawatts by 2030 in their Intended Nationally Determined Contributions (INDCs). These targeted off-grid solar electricity would be functional in combating the electricity poverty in Nigeria. Some studies by renowned international bodies are pointers that only 45.6 per cent of the entire Nigerian population had access to electricity in 2016. Even the population that has access to electricity get an average of four hours of erratic supply daily. The electricity problem is largely due to the Nigerian electricity grid. The Nigerian electricity sector is centralised given that electricity is generated in large gas and hydro power stations. Consequently, it is distributed to consumers across Nigeria through a national grid. This grid is unsuitable for the electrification of 65 per cent of the Nigerian rural population because they are in remote rural areas. Secondly, the electricity infrastructures used in Nigeria are old and not adequately maintained. As a result, they frequently break down. Furthermore, these infrastructures are targets for vandals. Owing to the interconnectivity of the grid, regular breakdown or vandalism against a part of the infrastructure disrupts the quality of supply of power from the national grid. Hence, if a one hundred percent electrification rate were to be achieved, Nigeria would have to resort to decentralised electricity which dispenses with the need for the use of a national grid. Thus, the targeted off-grid solar electricity is a welcome development.
关键词： Nigerian Off-grid Solar Electricity,Renewable Energy,Climate Change,Electricity Poverty,Paris Agreement
更新于2025-09-10 09:29:36
-
[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Signal Modeling for Dynamic Testing of Smart Electricity Meter
摘要： By analyzing the typical large power dynamic loads characteristics, a general dynamic testing signal model and its three-phase m-sequence pseudorandom dynamic testing signal are established. Two kinds of smart electricity meters are measured, and the measurement uncertainty was evaluated. the results are given. Concurrently,
关键词： testing signal,dynamic load characteristics,measurement,m-sequence,smart electricity meter
更新于2025-09-10 09:29:36
-
Visible-light photocatalytic fuel cell with Z-scheme g-C3N4/Fe0/TiO2 anode and WO3 cathode efficiently degrades berberine chloride and stably generates electricity
摘要： A visible-light Z-scheme g-C3N4/Fe0/TiO2 anodic catalyst was tested with cathodic WO3 in photocatalytic Fuel Cell (PFC) that efficiently degrades berberine chloride and simultaneously generate electricity at pH 2,5,7 and 13. The Stainless-steel mesh electrodes loaded with prepared catalyst were irradiated by visible-light in single chamber PFC. The highest removal of berberine Chloride, cell voltage, and power density were 91%, 0.8 V, and 16.4 W/m2 at a current density of 2.02 mA/cm2, respectively after 90 min irradiation in 0.05 M Na2SO4 electrolyte, with 10 ? external resistance. The impacts of pH and initial concentration of BEC on photocatalytic degradation and cell voltage were evaluated. The cell current density is enhanced while the photocatalyst activity increased. The constructed PFC maintained high-performance after 5 uses. Its use in degrading wide spectrum refractory pollutants and generate electricity is expected for the proved catalyst design, paired electrodes and high PFC performance for practical wastewater treatment.
关键词： Electricity generation,WO3,Visible-light,g-C3N4/Fe0/TiO2,Photocatalytic Fuel Cell,Berberine Chloride,Z-scheme
更新于2025-09-10 09:29:36
-
Deploying solar energy with community choice aggregation: A carbon fee model
摘要： This article investigates solar photovoltaic deployment through community choice aggregation programs. A case study of a solar energy program facilitated through a public energy council in Southeastern Ohio is highlighted, which used a ‘carbon fee’ model to collect a 0.2 cents per kilowatt hour incremental fee above the standard aggregation rate. This premium funds the development of behind-the-meter solar installations, and may serve as an exemplary approach for other aggregation programs to deploy solar.
关键词： solar energy,electricity,local governance,Ohio,Community choice aggregation
更新于2025-09-10 09:29:36
-
AIP Conference Proceedings [Author(s) SolarPACES 2017: International Conference on Concentrating Solar Power and Chemical Energy Systems - Santiago, Chile (26–29 September 2017)] - Techno-economic analysis of a small scale solar power tower at varied locations
摘要： Location selection is an important factor for the effectiveness and cost of a solar electricity generation system. Latitude and weather impact efficiency and availability, and local labor rates have a further influence on cost. To explore the impact of these effects, we performed techno-economic analysis of a small-scale solar power tower concept in six different locations in the United States, Australia, and India. The specific configuration we considered has a nominal power rating of 100 kWe and 5 hours of thermal energy storage. Further, we considered two deployment strategies: a single stand-alone 100 kWe tower, and a 20 MWe cluster of many towers. For each scenario, we used a probabilistic analysis method to evaluate levelized cost of electricity. We found that this configuration has potential for cost-competitive electricity generation and the ability to improve grid flexibility for integration of intermittent renewables. In addition, solar resource, latitude, and local labor rates all have an impact on the levelized cost of electricity of the system.
关键词： levelized cost of electricity,solar power tower,thermal energy storage,techno-economic analysis,renewable energy
更新于2025-09-09 09:28:46
-
[IEEE 2018 2nd International Conference on Engineering Innovation (ICEI) - Bangkok, Thailand (2018.7.5-2018.7.6)] 2018 2nd International Conference on Engineering Innovation (ICEI) - Forecasting Self-Consumption Solar Power Capacity of Industry and Business Sector in Thailand: a System Dynamic Model
摘要： The future of solar Photovoltaic (PV) technology is bright. Not only solar PV is a clean energy but also has its price dropped and has its efficiency improved significantly since 1975. Thus, investing in solar PV is feasible and attractive nowadays. In Thailand, industrial and business sector are the largest power consumers which have an opportunity to reduce electricity cost and promote Corporate Social Responsibility (CSR) by using solar PV. So, installing solar PV as Isolated Power Supply system (IPS) of companies in the industrial sector reduces electricity consumption from the grid. This would cause a problem in demand forecasting for electricity in the grid. Through a questionnaire survey, this research aims to develop a system dynamic model to understand the dynamic behavior of factors that affect the solar PV capacity, and forecast the monthly solar PV capacity growth from 2018 to 2022 of the industry and business sector in Thailand.
关键词： Electricity generation capacity,System dynamics,Solar PV,Forecasting
更新于2025-09-09 09:28:46