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- 摘要
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- 实验方案
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Series DC Arc Simulation of Photovoltaic System Based on Habedank Model
摘要： Despite the rapid development of photovoltaic (PV) industry, direct current (DC) fault arc remains a major threat to the safety of PV system and personnel. While extensive research on DC fault arc has been conducted, little attention has been paid to the long-time interactions between the PV system and DC arc. In this paper, a simulation system with an arc model and PV system model is built to overcome the inconvenience of the fault-arc experiments and understand the mechanism of these interactions. For this purpose, the characteristics of the series DC arc in a small grid-connected PV system are ?rst investigated under uniform irradiance. Then, by comparing with di?erent arc models, the Habedank model is selected to simulate the fault arc and a method to determine its parameters under DC arc condition is proposed. The trends of simulated arc waveforms are consistent with the measured data, whose ?tting degree in adjusted R-squared is between 0.946 and 0.956. Finally, a phenomenon observed during the experiment, that the negative perturbation of the maximum power point tracking (MPPT) algorithm can reduce the arc current, is explained by the proposed model.
关键词： PV arc fault,fault arc simulation,renewable energy,DC arc model,arc characteristics
更新于2025-09-19 17:13:59
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Thinned Germanium Substrates for III-V Multijunction Solar Cells
摘要： Due to the large-scale and distributed characteristics of increasing renewable energy resources, dynamic economic emission dispatch (DEED) of hybrid energy resource system becomes more and more important in the power system operation. This paper proposes a distributed model predictive control (DMPC) method for hybrid energy resources system of dynamic economic optimal dispatch with large-scale decomposition coordination approach. First, the DEED model of hybrid energy resources is converted into predictive control model, which can provide rolling optimization mechanism for dealing with intermittent energy resources optimization. Second, predictive control model is decomposed into several subsystems with Lagrangian multipliers for coordinating those subsystems, which can greatly decrease the computational complexity. Third, due to the randomness or uncertainty of intermittent power generation, model predictive control can dynamically optimize random or uncertainty problem with rolling optimization mechanism. Furthermore, adaptive dynamic programming is utilized to solve those subsystem optimization problems, which can optimize the random or uncertain problem in real-time condition. In the optimization process, probability constraint is converted into deterministic constraint with its probability density function, and system load balance can be properly handled with coupled coarse-fine constraint-handling technique. According to the obtained results in the case studies, the proposed DMPC can optimize the DEED of hybrid energy resources well combining with the large-scale decomposition-coordination approach, while greatly decreasing the optimization complexity and computation time, which reveals that the proposed method can provide an alternative way for solving the DEED problem of hybrid energy resources.
关键词： model predictive control,Renewable energy resources,large-scale decomposition-coordination,dynamic economic emission dispatch
更新于2025-09-19 17:13:59
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[IEEE 2019 IEEE Global Humanitarian Technology Conference (GHTC) - Seattle, WA, USA (2019.10.17-2019.10.20)] 2019 IEEE Global Humanitarian Technology Conference (GHTC) - Analysis of Field Collected Data for a Prototype Photovoltaic System in Nauta, Peru
摘要： This paper describes the field collected data from a prototype photovoltaic power system at the home of the director of JungleMaster Ministries in Nauta, Peru. The system was designed and installed by a team from George Fox University in the summer of 2017. After almost two years of daily usage, the data was used to analyze the current health and functionality of the installation. Additionally, an unexpected issue with the loads and batteries is discussed, with possible causes and potential solutions.
关键词： photovoltaic,data analysis,charge controller,renewable energy,inverter,data acquisition,humanitarian
更新于2025-09-19 17:13:59
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[IEEE 2019 IEEE International Conference on Architecture, Construction, Environment and Hydraulics (ICACEH) - Xiamen, China (2019.12.20-2019.12.22)] 2019 IEEE International Conference on Architecture, Construction, Environment and Hydraulics (ICACEH) - Optimal Decision of Photovoltaic Generation Injection Point in Unbalanced Distribution System
摘要： In this paper, the photovoltaic generation was considered as the only one renewable power source to supply system load of a chemical factory directly. An improved genetic algorithm was applied to determine the optimal location and capacity of newly constructed PV generation systems by considering system loss minimization and improving voltage unbalance through simulation with solar power injected.
关键词： Optimal Feed-in Location,Renewable Energy,Photovoltaic Generation,Genetic Algorithm
更新于2025-09-19 17:13:59
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Performance enhancement of a photovoltaic thermal (PVT) and ground-source heat pump system
摘要： A new system consisting of photovoltaic thermal-ground source heat pump (PV/T-GSHP) was proposed as a solution for electricity shortage and high electricity consumption in heating buildings in Jordan. The performances of the photovoltaic system and the ground source heat pump system were studied without coupling as in real life and with coupling in a hybrid system using TRNSYS software. The results show that this PV/T-GSHP hybrid system can reduce the photovoltaic panels' temperature by more than 20 °C, and improve the e?ciency of electricity production by 9.5 %, simultaneously. And in heating season the average coe?cient of performance of the heat pumps increased from 4.6 to 6.2 with a decreament in electricity consumption by 25.7 %. The life cycle cost of the hybrid system decreased by 3.9 % and the net present value inceased by 13.2 % compared to the two systems separated. The model of the PV/T-GSHP system was established using TRNSYS software, an optimmi-zation was made to select the photovoltaic modules' temperature at which cooling starts, followed by technical and economical studies on both systems separated and coupled in a hybrid system. This hybrid system can provide guidance for future related project.
关键词： Hybrid system,Ground-source heat pump,TRNSYS,Renewable energy,Solar photovoltaic/thermal
更新于2025-09-19 17:13:59
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[IEEE 2019 3rd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - Ankara, Turkey (2019.10.11-2019.10.13)] 2019 3rd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - Use of Hybrid Photovoltaic-Thermal (PV/T) Solar Modules for Enhancing Overall System Efficiency
摘要： Hybrid Photovoltaic/Thermal systems, also called as PV/T systems or solar cogeneration systems, are innovative power generation technologies that convert solar radiation into usable thermal and electrical energy. Such systems combine a solar cell, which convert sunlight into electricity, with a solar thermal collector, which captures the remaining energy and removes waste heat from PV module. PV/T systems have a greater overall performance than the PV systems and solar thermal systems separately. In order to improve the performance of PV/T systems a lot of the studies have been done and researchers still keep on investigating these systems. A comprehensive review on these previous research studies are presented here. Many methods and approaches to enhance the performance of the PV/T systems are discussed along with the mathematical models used. The gaps in existing literature are identified and recommendations for future research are precisely outlined. It is emphasized here that only few experimental studies on PV/T systems based nanofluid materials are exist. Therefore, comprehensive experimental studies under real atmospheric conditions should be done with these systems, without neglecting effects of variations in mass flow rate of nanofluids,
关键词： PV hybrid,PVT,Solar energy,PVT-PCM,renewable energy
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE Milan PowerTech - Milan, Italy (2019.6.23-2019.6.27)] 2019 IEEE Milan PowerTech - Mitigation Analysis of MV Distribution Network Constraints Thanks to a Self-Consumption Policy For Photovoltaic Distributed Units
摘要： Self-consumption of homemade electricity from renewable energy in encouraged by the European commission to enforce their penetration in state energy portfolios. By using electrical energy storage systems and demand response, this technique can lower the overall cost of the renewable energy transfer in the electrical system and so increase it. To develop self- consumption efficiently, various energy policies can be imagined to create economic support schemes for motivating consumers to make active decisions in this way and mobilizing financial resources for an energy transition toward more RES in the future. Germany has experimented earlier this policy orientation while France is only beginning to consider self-consumption. The goal of this paper is to compare German and French policies in order to evaluate the benefits of PV production self-consumption. So economic national frameworks are recalled and then a 100kW PV producer is considered. With one-year time data series and an energy model, different operation conditions are simulated and times of return on investment are compared. Then, benefits for the electrical network operation are studied. The benchmark distribution network model from CIGRé is used to quantify and compare technical constraint occurrences.
关键词： energy management system.,self-consumption,electrical constraints,renewable energy integration,electrical storage
更新于2025-09-16 10:30:52
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[IEEE 2019 3rd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - Ankara, Turkey (2019.10.11-2019.10.13)] 2019 3rd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - Virtual Power Plant Application for Rooftop Photovoltaic Systems
摘要： Virtual Power Plant (VPP) systems are highly advanced and innovative systems that take complex infrastructure to work in synergy, compared to the traditional transmission energy system. The ICT component of a VPP is highly developed with vigorous algorithms that help to achieve specific functions. Identification and control either by reception of status and signaling the Distributed Energy Resource (DER) is what makes VPP a more advanced energy sharing platform. Above all, it has a business model and this makes it exceptional over traditional transmission system. VPPs with different scales and different energy system coverages have recently been applied in countries such as USA, Belgium, Germany and Sweden. Many companies are nowadays venturing into these systems as they proof to be the future of distributed energy systems that aim to integrate renewable energy with traditional energy resources, with the objective of generating energy at low cost and ensuring consumers participate in its production as proconsumers. In this paper, recent VPP applications along with renewable energy resources used have been discussed and the main components that make up a VPP system efficient have been clearly outlined. As a result of this preliminary research, potential road map of local/regional utility companies in Turkey for applicable VPP management structure and software architecture is suggested.
关键词： Virtual Power Plant,Rooftop photovoltaic,Renewable Energy Sources,Distributed Energy Sources
更新于2025-09-16 10:30:52
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Photovoltaic Expansion-Limit through a Net Energy Metering Scheme for Selected Malaysian Public Hospitals
摘要： This paper presents an optimization approach in determining the expansion-limit of Renewable Distributed Generation (DG) capacity through a Net Energy Metering (NEM) scheme specifically for selected Malaysian public hospitals. In this study, the total line loss reduction was analyzed and set as the main objective function in the optimization process where an acceptance region for DG extensiveness was proposed via the lower total line loss outcome value. Solar photovoltaic (PV)-type DG unit (PV-DG) was identified as the type of DG used in this paper. Artificial Bee Colony (ABC) algorithm was chosen to alleviate such PV-DG optimization. The distribution network uses a bus and line data setup from the three selected Malaysian public hospitals prior to three different levels, i.e., National, State, and District level hospitals. MATLAB simulation result showed the PV-DG expansion capacity towards bigger scale and location bounded by the U-trajectory shape theory which resulted in a contradiction between NEM current maximum capacity requirement and actual PV-DG expansion-limit. These limitations were also found to be different among three different level hospitals, and the expansion-limit was tailored by their own distribution network parameters. Thus, this paper provides technical justification and gives the best option to the renewable energy (RE) developer for more effective PV-DG integration through the utilization of a NEM scheme. The importance of the study is portrayed in-depth towards achieving a more sensible and accurate way of estimating the outcome. This will encourage developers, building owners, and users in participating towards achieving potential benefits both in monetary and power system reliability improvement, specifically for Malaysian public hospital applications.
关键词： photovoltaic-type DG (PV-DG),maximum demand (MD),renewable energy (RE),artificial bee colony (ABC),distributed generation (DG),net energy metering (NEM)
更新于2025-09-16 10:30:52
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Evaluation and Design Criteria of Photovoltaic Thermal (PV/T)
摘要： More interesting research in the field of photovoltaic thermal is being conducted widely due to shifting interest in supplying both electrical and thermal needs especially in areas that suffer from small installation space. Photovoltaic thermal (PV/T) offers to produce both electricity and thermal power from solar irradiance within the same area; therefore, saving up space & other costs directed to installation. Moreover, various techniques & types have been studied and implemented to improve PV/T’s performance and combined efficiency. The aim of this paper is to review the fundamentals of this technology, current works in the field and show innovative designs of PV/T to illuminate the way forward for the technology for globe-wide recognition. Nanofluid and nano-PCM based PV/T collector was found to produce the highest efficiency among other types in tropical climate conditions. The performance evaluation criteria for this system was presented and explained. It is recommended to amend the current design by simplifying it for better use in building integrated applications and for residential consumers.
关键词： Photovoltaic thermal,Combined efficiency,PV/T,Nanofluid,Nano-PCM,Renewable energy,Solar energy
更新于2025-09-16 10:30:52