- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Benefit-based cost allocation for residentially distributed photovoltaic systems in China: A cooperative game theory approach
摘要： Distributed photovoltaic (PV) systems have constantly been the key to achieve a low-carbon economy in China. However, the development of Chinese distributed PV systems has failed to meet expectations because of their irrational profit and cost allocations. In this study, the methodology for calculating the levelized cost of energy (LCOE) for PV is thoroughly discussed to address this issue. A mixed-integer linear programming model is built to determine the optimal system operation strategy with a benefit analysis. An externality-corrected mathematical model based on Shapley value is established to allocate the cost of distributed PV systems in 15 Chinese cities between the government, utility grid and residents. Results show that (i) an inverse relationship exists between the LCOEs and solar radiation levels; (ii) the government and residents gain extra benefits from the utility grid through net metering policies, and the utility grid should be the highly subsidized participant; (iii) the percentage of cost assigned to the utility grid and government should increase with the expansion of battery bank to weaken the impact of demand response on increasing theoretical subsidies; and (iv) apart from the LCOE, the local residential electricity prices remarkably impact the subsidy calculation results.
关键词： Shapley value,cooperative game theory,mixed-integer linear programming,levelized cost of energy,cost allocation,solar photovoltaic
更新于2025-09-23 15:21:01
-
Optimal Operation Control of Microgrid Connected Photovoltaic-Diesel Generator Backup System Under Time of Use Tariff
摘要： With the exponentially increasing demand of electrical energy, many developing countries are struggling to provide electricity to the end-users. This challenge has mainly strained traditional power systems. To mitigate against this strain, governments are diversifying and liberalizing the energy market to meet future energy demand. In addition, end-users have several alternatives to reduce electricity cost at demand side. This can be realized either by using ef?cient devices or incorporating renewable energy sources while scheduling their powers economically. Within this framework, microgrids are considered as ef?cient power systems to exploit renewable energy sources with demand side management program. Nowadays, microgrids which can harness photovoltaic solar source at low cost are becoming an attractive option for reduction in electricity cost at demand side. To ensure uninterrupted power supply, diesel generators are often used as backup energy systems in most large-scale or industrial applications in Kenya. Therefore, this paper proposes a constrained optimal operation control strategy of microgrid connected photovoltaic with diesel generator backup system related to commercial and industrial (C&I) setups in Kenya. Particularly, the objective function simultaneously aims at reducing energy purchased from utility grid and the fuel consumption cost of the conventional diesel generator. The constraints related to control variables are taken in the context of C&I in Kenya. The optimal operation control is carried out using FMINCON interior-point algorithm, and two scenarios are analysed. The ?rst scenario is carried out by considering the intermittent mode from 7:00 hrs to 18:00 hrs, while the second scenario is considered in the intermittent connected mode. A case study is done based on the daily load pro?le of the Engineering workshops at Jomo Kenyatta University of Agriculture and Technology (JKUAT) located at ?1.099? latitude and 37.014? longitude. The optimal operation control has shown great bene?ts in terms of energy saving, cost saving as well as daily revenue. The daily energy saving is increased up to 52.1%, the daily cost saving is 20%, and daily energy sold is found to be 142.4 kWh which can generate daily income of $17.
关键词： Renewable energy,Levelized cost of energy,Optimization algorithm,Demand side management,Open-loop optimal control
更新于2025-09-23 15:21:01
-
Design, optimization and performance comparison of solar tower and photovoltaic power plants
摘要： This paper compares two main technologies of solar to electrical energy conversion, namely solar tower (ST) and photovoltaic (PV). For a fair comparison, a 100 MW same sized ST and PV plants are designed for a region with very good direct normal irradiance (DNI) and global horizontal irradiance (GHI). The initial design of the ST plant is optimized for solar multiple and thermal energy storage hours, and the PV plant is optimized for the optimal distance between parallel PV arrays. The ST plant has superior annual energy output of 513040.16 MWh compared to 270754.6 MWh from PV plant and capacity utilization factor of 58.6% in comparison to 30.9% from PV plant. On the contrary, the land use factor and solar to electric ef?ciency (SEE) of the PV plant is superior to ST plant while levelized cost of energy of ST plant is 2.83 times higher than the PV plant. Although ST plant has superior technical performance but way better economic performance of PV plant makes it the stand out solar to electrical energy technology for a location with promising GHI and DNI. This paper provides very useful guidelines for the policymakers to select a particular technology for the future solar-based power generation projects.
关键词： Levelized cost of energy,Photovoltaic,Solar energy,DNI,Solar tower,GHI
更新于2025-09-23 15:21:01
-
Optimal Design of Standalone Photovoltaic System Based on Multi-Objective Particle Swarm Optimization: A Case Study of Malaysia
摘要： This paper presents a multi-objective particle swarm optimization (MOPSO) method for optimal sizing of the standalone photovoltaic (SAPV) systems. Loss of load probability (LLP) analysis is considered to determine the technical evaluation of the system. Life cycle cost (LCC) and levelized cost of energy (LCE) are treated as the economic criteria. The two variants of the proposed PSO method, referred to as adaptive weights PSO (AWPSOc f ) and sigmoid function PSO (SFPSOc f ), are implemented using MATLAB software to the optimize the number of PV modules in (series and parallel) and number of the storage battery. The case study of the proposed SAPV system is executed using the hourly meteorological data and typical load demand for one year in a rural area in Malaysia. The performance outcomes of the proposed AW/SFPSOc f methods give various con?gurations at desired levels of LLP values and the corresponding minimum cost. The performance results showed the superiority of SFPSOc f in terms of accuracy is selecting an optimal con?guration at ?tness function value 0.031268, LLP value 0.002431, LCC 53167 USD, and LCE 1.6413 USD. The accuracy of AW/SFPSOc f methods is veri?ed by using the iterative method.
关键词： levelized cost of energy (LCE),multi-objective optimization,particle swarm optimization,standalone PV system,loss of load probability (LLP),life cycle cost (LCC)
更新于2025-09-19 17:13:59
-
Research on Grid Parity Predictions of Centralized Photovoltaic Electricity
摘要： Over the past decade, the photovoltaic (PV) industry in China has made great progress. However, this progress benefited from a series of subsidy policies, and with the continuous enlargement of the scale of centralized PV (CPV), the large subsidies have created great pressure on government finance, so achieving grid parity in CPV electricity is an urgent matter. This paper studies the grid parity of CPV electricity. First, this paper calculates the levelized cost of energy (LCOE) of CPV electricity. Second, using historical data and a dual learning curve, the paper predicts the LCOE of CPV electricity under scenarios with different resource zones and utilization times. Third, the paper predicts the LCOE of coal-fired electricity and draws conclusions based on changes in the price of coal and charcoal. Finally, the paper predicts when grid parity in CPV electricity in different resources areas will be achieved.
关键词： learning curve,centralized photovoltaic electricity (CPV),levelized cost of energy (LCOE),grid parity
更新于2025-09-19 17:13:59
-
An Overview of the Photovoltaic Industry Status and Perspective in China
摘要： Photovoltaic (PV) is developing rapidly in China, and the installed capacity and PV module shipping capacity are the first in the world. However, with the changes in the global economic environment and the uncertainty of China’s PV policy, especially after the 531 new policy, China PV has started a new cycle. To understand the laws of the development of photovoltaics in China better, the article first introduces the distribution of China’s solar resources, sorts out the development process of China’s PV, focuses on the development of China’s PV Top-runner project, and emphasizes the role of advanced technology in the application of the Top-runner project for grid parity and industrial development. Then it expounds the evolution of PV module technology, inverter technology and System design technology, and analyzes the development status of photovoltaic industry chain and production of Chinese PV enterprises. Finally, it summarizes and predicts the development trend of China’s PV industry and gives recommendations for China’s PV development.
关键词： high efficiency module,top runner Project,bifacial module,grid parity,Levelized cost of energy (LCOE),bright project,PV poverty alleviation program
更新于2025-09-16 10:30:52
-
Technical and Economic Optimal Solutions for Utility-Scale Solar Photovoltaic Parks
摘要： Solar energy has shown to be a successful renewable source, wherefore large investments are planned in the upcoming decades. This work aims at developing technical and economical solutions to optimize a utility‐scale grid connected solar photovoltaic park with an installed capacity of 24 MWp. Several successive simulations were automatically performed with the PVSyst software, so that each influencing parameter is individually analyzed. Moreover, a comprehensive study touching relevant aspects, such as central versus string inverters, landscape versus portrait dispositions, the optimal tilt angle (for fixed tilt systems), backtracking strategy (for single axis tracking systems), shading limit angle, and pitch is performed with the objective of finding the configuration leading to the higher grid injected energy output. The levelized cost of energy (LCOE) was obtained for 12 different cases in which, for both fixed tilt and single‐axis tracking (SAT), central and string inverters and portrait/landscape disposition were considered. The lowest LCOE achieved was 32.23 €/MWh, which is a clear indication of the competitiveness of the solar Photovoltaic (PV) technology. The most economic viable solution is characterized by the employment of an SAT system with the backtracking strategy, together with string inverters and module portrait disposition.
关键词： string inverters,levelized cost of energy (LCOE),optimization,design parameters,economic analysis,utility‐scale solar PV park
更新于2025-09-16 10:30:52
-
Techno-economic study of off-grid hybrid photovoltaic/battery and photovoltaic/battery/fuel cell power systems in Kunming, China
摘要： The objective of this study is to evaluate the technical and economic feasibility of stand-alone hybrid photovoltaic (PV)/battery and PV/battery/fuel cell (FC) power systems for a community center comprising 100 households in Kunming by using the Hybrid Optimization Model for Electric Renewable (HOMER) software. HOMER is used to define the optimum sizing and techno-economic feasibility of the system equipment based on the geographical and meteorological data of the study region. In this study, different hybrid power systems are analyzed to select the optimum energy system while considering total net present cost (NPC) and levelized cost of energy (COE). The results showed that the optimal hybrid PV/battery system comprised 500 kW PV modules, 1200 7.6-kWh battery units, and 500 kW power converters. The proposed system has an initial cost of $6,670,000, an annual operating cost of $82,763/yr, a total NPC of $7,727,992, and a levelized COE of $1.536/kWh. While the PV/battery/FC power system is possible, the cost increases were due to the investment cost of the FC system. The optimal PV/battery/FC system has an initial cost of $6,763,000, an annual operating cost of $82,312/yr, a total NPC of $7,815,223, and a levelized COE of $1.553/kWh.
关键词： electrolyzer,levelized cost of energy,hydrogen,Hybrid power system,total net present cost,fuel cell,solar energy
更新于2025-09-10 09:29:36
-
Technical and Economic Performance of 1MW Grid-connected PV system in Saudi Arabia
摘要： In this paper, a feasibility study has been done utilizing real time solar irradiance data for a 1MW grid-connected PV system in Qassim region in the middle of Saudi Arabia. The analysis has been done using both technical and economic indicators. Technical performance indicators are; Yield Factor, Capacity Factor and Performance Ratio. Economic indicators are; Levelized cost of energy and simple payback time. The simulation results show high energy productivity, and both technical and economic indicators are high compared with similar systems in different countries. Also, the greenhouse gas emission reduction has been estimated. The prices of PV modules and balance of system components are up to date. The analysis results proved the viability of the proposed system supposing there is no any governmental incentives or grants which could make big difference.
关键词： GHG,Solar Energy,PV grid-connected,PV,photovoltaic,Levelized cost of energy
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 central receiver power plant with different levels of storage capacity and hybridization
摘要： The energy storage and fossil-backup (fossil-hybridization) systems of a concentrating solar power plant (CSP) provide a continuous production of energy all over the year and satisfy the grid demand even when the sun is not shining. One could ask about the behavior of the energy production, or the levelized energy cost, as a function of the energy storage and of the fossil-hybridization in such plants. This paper tries to answer this question. For this task, there have been performed numerous simulations on a central receiver plant with a fixed nominal power, varying the storage capacity and the level of hybridization. The results showed that these variables impact differently. For the thermal storage, from capacities ranging from 0h to 24h, there is a specific intermediary capacity, 15h, in which the levelized energy cost is minimum. But for the fossil-hybridization, this energy cost always decreases with the increment of the hybrid level. The results also showed that, if a given energy production is supported by a certain level of hybridization, its energy cost would be less than that supported by a storage system. This is due to the relatively high investment costs related to the storage system, and the relatively low cost of fuel.
关键词： Concentrating Solar Power (CSP),Central Receiver (CR),Thermal Energy Storage (TES),Fossil-hybridization (HYB),Levelized Cost of Energy (LCOE)
更新于2025-09-04 15:30:14