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The use of light filters in the photovoltaic solar power station to improve economic efficiency
摘要： The agriculture and forestry sector require a solution to the problem of energy supply to autonomous consumers. The use of renewable energy sources is relevant worldwide in accordance with environmental requirements. The paper considers the project of a photovoltaic solar power station using light filters to reduce the number of solar panels to provide the required power. The Krasnoyarsk State Agrarian University has developed an experimental setup for studying the characteristics of solar panels using light filters. The aim of the study is to develop a technology for the use of light filters in photovoltaic solar power station and to optimize their operation modes in order to increase the economic efficiency of using autonomous sources for power supply to agricultural consumers. The objectives of the study are the selection and analysis of light filter materials to increase the generated power, substantiate the application of the photovoltaic solar power station for autonomous objects of agriculture and forestry and prove the economic efficiency of the proposed installation. The paper presents the results of a study of the characteristics of solar modules using filters, the main economic indicators are calculated, the economic efficiency of the use of filters is proved. The use of photovoltaic solar power station will ensure a reduction in the cost of electricity generation by 7% compared to existing plants.
关键词： economic efficiency,renewable energy sources,photovoltaic solar power station,solar panels,light filters
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE 1st International Conference on Energy, Systems and Information Processing (ICESIP) - Chennai, India (2019.7.4-2019.7.6)] 2019 IEEE 1st International Conference on Energy, Systems and Information Processing (ICESIP) - Multifunctional VSC Controlled Solar Photovoltaic System with Active Power Sharing and Power Quality (PQ) Improvement Features
摘要： This paper presents a multifunctional voltage sourced-converter (VSC) controlled solar photovoltaic (SPV) system with a generalized ‘dq’ and adaptive PLL-based include approach to extract the dual features. These enhanced active power sharing feature based on the availability of active power at DC-side collector bus while also serving as an active harmonic filter (AHF). The presented control is computationally less intensive and easy to formulate compared to its conventional counterpart like synchronous reference frame theory (SRFT). The objective of this work is to effectively extract the various ancillary services offered by multifunctional VSC in the power distribution system. The primary function of any grid- connected inverter (GCI) is to serve the active power demand of the load connected at the point of interconnection (PoI) in the power distribution network. However, the multifunctional VSC with presented control approach can also be utilized as AHF to attenuate the rich harmonic content present in source current, to mitigate the load reactive current demand, and to adequately supply the zero sequences harmonic component requirement of the unbalanced and nonlinear load by the fourth leg of the multifunctional VSC. Additionally, the proposed system typically ensures the unity power factor (UPF) operation. An incremental conductance (IC) based control technique is employed to optimize and continuously track the maximum intermittency. The power point usefulness of is demonstrated through transient test cases, conducted in the MATLAB/Simulink software environment. Additionally, its practicality is validated through a comprehensive set of experimental studies investigated on a laboratory developed prototype.
关键词： active harmonic filter,Multifunctional VSC,unity power factor operation,power quality improvement,grid-connected SPV system,renewable energy sources
更新于2025-09-16 10:30:52
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Testing guidelines for connection of solar photovoltaic farm to distribution grid: The Malaysian experience
摘要： Solar photovoltaic technology is intermittent in nature and employs power converters for grid-interconnection, which can bring stability and power quality (PQ) issues to the power grid. Therefore, a set of testing guidelines is required to assure that solar plants comply with the grid and inverter requirements. As such, this article presents comprehensive testing guidelines for the interconnection of solar systems into Malaysian power grid, including inverter and PQ tests. The test points, conditions, parameters and acceptable limits for both tests are discussed in detail. This article also presents the results of a case study in which the testing guidelines were applied to examine the PQ of an actual grid-connected solar photovoltaic plant in Malaysia and to assess the performance of the smart inverter used in the tested solar system. The testing outcomes, which were recorded by a PQ analyser, showed that the tested solar system was in compliance with all the requirements stipulated in the testing guidelines. The findings presented in this article will help relevant parties to understand these solar testing guidelines and serve to promote the wide deployment of solar technology towards a clean and sustainable future.
关键词： testing guidelines,photovoltaic systems,power quality,renewable energy sources,inverters
更新于2025-09-16 10:30:52
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[IEEE 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fukuoka, Japan (2019.7.7-2019.7.11)] 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Silicon waveguide polarization beam splitter using reversed ???2 coupler structure
摘要： Balancing electricity supply and demand is a complex task. Renewable energy sources are often intermittent, while electrical loads vary throughout the day. This can result in an abundant supply that suppresses spot prices in one region, while another region simultaneously experiences tight supply margins and price spikes. Connecting these two regions through electrical interconnectors would enable greater utilization of renewable energy, but this can be expensive and is unfeasible for distant regions, such as between continents. However, datacenters are becoming ubiquitous around the world and are linked through fiber connections. This paper proposes a virtual interconnector (VIC) scheme using fiber to dynamically move energy demand, in the form of computation, to datacenters in other market regions with surplus low cost and renewable energy. This increases the global renewable penetration without requiring expensive grid interconnections. The associated benefits for the datacenter operator, the electricity grid controller, consumers, and the environment are discussed.
关键词： power system economics,load management,optical interconnections,power system control,Data warehouses,renewable energy sources,green computing,power system interconnection
更新于2025-09-16 10:30:52
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Power architectures for the integration of photovoltaic generation systems in DC-microgrids
摘要： This paper describes a preliminary analysis on the integration of renewable energy systems in smart microgrids. The initial theoretical evaluations are referred to the case study of a laboratory DC microgrid interconnecting: electric mobility, stationary storage systems and renewable energy sources in a smart grid scenario. Specific power architectures for the integration of a 7kWp solar generation system with the considered microgrid are analysed and compared, in terms of efficiency and costs, in order to support the choice and the design of optimal solutions. Modeling and simulations of the related components are carried out in Matlab-Simulink environment in order to evaluate the performance of different embedded maximum power point tracking techniques, working in balanced and unbalanced irradiance conditions for the considered PV generation system. The promising results and the considerations reported in this paper highlight the importance of using the proposed smart power architectures and the related control techniques to support the optimal use of sustainable energy generation systems.
关键词： renewable energy sources,smart grids,energy storage systems,electric vehicles
更新于2025-09-12 10:27:22
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Maximum Power Photovoltaic Units Penetration under Voltage Constraints Criteria in Distribution Network Using Probabilistic Load Flow
摘要： Nowadays, the connections of Renewable Energy Sources to Distribution Networks are increasing in large number. In order to assess the performance of Distribution Network under normal operating conditions Probabilistic Load Flow analysis is necessary in order to take into consideration the stochastic behavior of Load Demands and Renewable Energy Sources (for example the Photovoltaics Generation Units). Generally, Deterministic Load Flow calculations are typically needed to assess the allowed Distributed Generation penetration level for a given network in order to ensure, for example, that Voltage limits are not exceeded. The present paper deals with the Probabilistic Load Flow using Monte Carlo techniques. The developed program allows probabilistic predictions of Voltages profiles at all buses or nodes of a Distribution Networks. A practical case is also discussed to show the application of the study in order to assess the maximum Photovoltaic power penetration that can be installed into a Distribution Network without violating Voltage Constraints.
关键词： Distribution Network,Distributed Generation,Probabilistic Load Flow,Photovoltaic Units,Renewable Energy Sources
更新于2025-09-12 10:27:22
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Power control of hybrid energy systems with renewable sources (wind-photovoltaic) using switched systems strategy
摘要： This paper presents a novel strategy for output power control of a hybrid energy system, composed of renewable energy sources (wind and photovoltaic), a battery bank and a variable load. Developing an energy management strategy, the hybrid energy system is described here as a switched nonlinear system with unknown parameters. Then, an adaptive control strategy is proposed to satisfy the total power demand in different conditions, under arbitrary switching. The proposed control law only depends on angular speed and current, without requiring the wind measurements. The analytical stability proof is given, based on the common Lyapunov function method. The simulation results are also presented and discussed to demonstrate the performance of the proposed method, for a typical hybrid energy system.
关键词： Energy management strategy,Renewable energy sources,Switched nonlinear system,Lyapunov function method
更新于2025-09-11 14:15:04
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[IEEE 2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America) - Gramado, Brazil (2019.9.15-2019.9.18)] 2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America) - Generation Planning Model Including Frequency Stability Constrains to Mitigate Large-Scale Integration of Photovoltaic Plants
摘要： In the last two decades, electricity systems have undergone structural changes due to the incorporation of large- scale variable generation technologies (VGTs). Some of the VGT such as photovoltaics (PV) and wind power produces undesirable effects in the system. In power systems, synchronous generators are the primary sources of inertia. During power imbalance, the inertia of the generators prevents frequency stability issues. The VGTs do not naturally provide inertia, so when their participation in the production matrix is high; the system loses robustness since the inertia is decreased. This paper proposes a generator-planning model that includes the effects of lower inertia due to the increase of VGTs. The objective is to obtain a limited frequency deviation during contingencies. The proposed model adds restrictions related to the frequency variation to the capacity of the units that are in fault. The simulations show that to comply with the specified frequency deviations, the model must oversize the park in the order of 13 % in small meshed systems, while in real size systems the oversize is in the order of 1 %.
关键词： Frequency regulation,inertial response,renewable energy sources,power generation planning
更新于2025-09-11 14:15:04
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Grid Connected-Photovoltaic System (GC-PVS): Issues and Challenges
摘要： Smart grid is the key technology for an effective utilization of the Renewable Energy Sources (RES). The utilization of RES for the generation of electricity is increasingly gaining interest of researchers during the last decades. The main reason behind this is global incentivization, the increasing price of petroleum products, climate issues and deregulations in the energy market. As the Government of India, (MNRE i.e. Ministry of New & Renewable Energy) is targeting to generate 20000 MW power through grid-connected solar PVS by the year 2022 therefore, the main focus in this paper has been presented on power generation through grid-connected PVS. The emerging smart grid technology has enabled the grid-connected PVS as an evolving process in today’s world for electrical power generation. However, apart from so many advantages, there are several issues and challenges associated with the integration of PVS to the electric utility grid hence, the investigation to find out available possible solutions to overcome these issues becomes essential in order to enhance the performance of grid-connected PVS. The most severe constraint associated with this emerging technology is it high penetration level. If during low load conditions there is some mismatch found between the real power output and the load profile characteristics of PVS then it may result into large reverse power flow, high power losses or severe voltage violation. In this paper, several issues and challenges associated with the integration of solar PVS with the electric utility grid are presented.
关键词： Renewable Energy Sources,Grid Connected-Photovoltaic System,harmonics,voltage stability,RES,frequency stability,smart grid,GC-PVS
更新于2025-09-11 14:15:04
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Co-Design of the PV Array and DC/AC Inverter for Maximizing the Energy Production in Grid-Connected Applications
摘要： Grid-connected Photovoltaic (PV) systems are currently developed by merging a PV array and a DC/AC inverter which are designed separately, without considering the impact of the PV array operational characteristics on the power losses of the DC/AC inverter. In this paper, a co-design technique is presented, where the optimal design parameters of the PV array and DC/AC inverter in a grid-connected PV system are calculated concurrently through a unified design process. The proposed technique enables to optimally match the PV array configuration and the DC/AC inverter structure. A study has been performed, where the PV systems synthesized by applying the proposed co-design technique are compared with PV system configurations comprising PV arrays and DC/AC inverters that have been designed separately, through distinct optimization processes based on various alternative optimization objectives. The design results for two installation sites, with different meteorological conditions during a year, demonstrated that only the proposed co-design optimization technique is capable to ensure the maximization of the annual energy production of the overall grid-connected PV system.
关键词： DC-AC power conversion,Optimization methods,Particle Swarm Optimization (PSO),Renewable Energy Sources (RES),Photovoltaic (PV) power systems
更新于2025-09-11 14:15:04