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Simulation Analysis of Harmonic Characteristics of Photovoltaic Power Generation System Based on MATLAB
摘要： Photovoltaic (PV) power generation system, as a kind of clean energy power, is increasingly applied in the power grid. However, due to the uncertainty and fluctuation of PV system, it has negative influence on the power quality, such as power factor deterioration, voltage waveform distortion and electromagnetic interference. In this paper, by doing the equivalent impedance transformation of the high voltage transmission and distribution system with photovoltaic power supply, the influence of photovoltaic power generation on amplification of harmonic voltage and harmonic current of high voltage transmission side is analyzed. The capacity of PV system varies with the range of harmonics. Finally, the optimal operation mode of photovoltaic power generation is put forward innovatively based on harmonic characteristics under different operating conditions and capacity. It aims to guide the harmonic suppression of photovoltaic power generation system.
关键词： transmission and distribution,harmonic suppression,photovoltaic power generation system,harmonics
更新于2025-09-12 10:27:22
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Experimental study of a micro-refrigeration system driven by photovoltaic power generation
摘要： A micro-refrigeration experimental system driven by photovoltaic power generation was established, and a study of the cooling capacity, load power, and system efficiency changes over time under sunny and cloudy weather conditions was carried out. The results show that the appendant battery makes the system run more stably, and the weather has no obvious effect on the operation of the indoor refrigeration system. The system exergy analysis indicates that the exergy loss of the compression process is the largest, accounting for more than 80% of the total in the refrigeration system; The exergy efficiency of the refrigeration system can reach about 28% under both weather conditions.
关键词： exergy analysis,Photovoltaic power generation,micro refrigeration system
更新于2025-09-12 10:27:22
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Numerical Study on Windbreaks with Different Porosity in Photovoltaic Power Plants
摘要： In recent years, more and more attention has been paid to clean energy. Large-scale photovoltaic power plants are increasing. Photovoltaic power generation will be destroyed at a high wind speed, affecting the efficiency of power generation. Based on the computational fluid dynamics technology and the use of porous media model, this paper uses Fluent to numerically analyze the windbreaks of photovoltaic power generation. The influence of the inlet wind speed and the porosity of the windbreaks on the differential pressure across the photovoltaic panels was studied. The results show that with the increase of wind speed, the differential pressure of the photovoltaic panel is also increasing; installing the windbreaks with a porosity of 0, the differential pressure of the PV panel decreases. In addition, the pressure drop of the photovoltaic panel can be reduced by 50%-68% due to the effect of the windbreaks at different wind speeds; the porosity of the windbreaks panel is the better at 0.25-0.5, compared with the windbreaks without installation, the differential pressure of the photovoltaic support bracket decreased by 18.75%-35.84%.
关键词： Porosity,Photovoltaic power plants,Windbreaks,Numerical analysis
更新于2025-09-12 10:27:22
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Optimal Load Scheduling of a Smart Home Supplied by a Photovoltaic Grid-Connected Plant
摘要： Energy management of a household connected to the grid, but with a local PV installation is studied here. For this a new formulation is proposed, that takes into account the PV generation, the grid energy cost, the priority of extensions and the requested level of user comfort. A multi-start random constructive heuristic algorithm is proposed to optimize the scheduling of a smart home supplied by a Photovoltaic- grid connected plant. The proposed approach is tested on a specific case study, in two different scenarios depending on the comfort value of the user. The obtained results show the efficiency of the proposed approach.
关键词： Micro-grids,comfort index,load scheduling,Smart home,Photovoltaic power
更新于2025-09-12 10:27:22
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An Experimental Study on Dual P-f Droop Control of Photovoltaic Power Generation for Supporting Grid Frequency Regulation
摘要： The objective of this study is to develop an active power control of photovoltaic power generation (PV) system for supporting grid frequency regulation in two different forms, i.e. slow frequency control contributing to load – frequency control (LFC) and fast frequency control contributing to inertial response of synchronous generators. Two different active power – frequency droop characteristics are implemented simultaneously by using different frequency measurement methods. The performance test result of proposed control using an experimental setup shows that PV system equipped with proposed control can supply appropriate active power according to two different droop characteristics for slow frequency control and fast frequency control.
关键词： inverter,inertial response,Droop control,photovoltaic power generation,frequency control
更新于2025-09-12 10:27:22
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[IEEE 2019 IEEE Russian Workshop on Power Engineering and Automation of Metallurgy Industry: Research & Practice (PEAMI) - Magnitogorsk, Russia (2019.10.4-2019.10.5)] 2019 IEEE Russian Workshop on Power Engineering and Automation of Metallurgy Industry: Research & Practice (PEAMI) - Selecting Components for Bidirectional DC-DC Converter of Photovoltaic Power Supply System
摘要： The article presents a selection procedure for the components selection of a bidirectional DC-DC. The converter is used to implement energy storage system as part of a photovoltaic power supply system. The storage system provides energy balance and smooth voltage oscillations in the power supply system’s DC link via controlling energy flows. The considered approach can be used in photovoltaic and electric vehicles and electric drives applications. The paper includes a description of power components selection based on physical properties and power supply system requirements. Besides, an economic analysis of components as a part of power supply system is considered.
关键词： Bidirectional DC-DC converter,Photovoltaic power supply system,Energy storage system
更新于2025-09-12 10:27:22
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Establishment and analysis of micro-net model considering the enhancement of photovoltaic power utilization for air-source heat pump
摘要： Since the stability of the power grid and the quality of electricity supply can be affected, the intermittent and unpredictable features make the renewable energy generation cannot be absorbed by the power grid easily and completely. “Abandoning the wind and solar power” phenomenon also becomes more serious in recent years. As an efficient thermoelectric conversion device, the heat pump system can couple thermal energy and electricity to eliminate excess electricity of the system theoretically. However, the influence of the heat pump technology on the microgrid system which needs to be analysed case by case lacks a unified evaluation method. Therefore, based on the Energy PLAN, an energy microgrid model of an ecological region in Qingdao is established to study the impact on the renewable energy integration and the enhancement of renewable energy utilization through applying the air-source heat pump system. The simulation results showed that the maximum photovoltaic penetration rate in the region is 19.23% initially. After applying the air-source heat pump, the photovoltaic capacity corresponding to the critical point of 100% renewable energy utilization is in direct proportion to the heat pump capacity. Additionally, the maximum photovoltaic penetrations can reach 25%. In this paper, we also propose relevant suggestions for the designing and building of the micro-net energy system.
关键词： photovoltaic power,air-source heat pump,Energy PLAN,microgrid,renewable energy
更新于2025-09-12 10:27:22
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Investigation of Operating Parameters and Degradation of Photovoltaic Panels in a Photovoltaic Power Plant
摘要： Recently, the use of photovoltaic (PV) cells and the increase in the number of photovoltaic power plants has led to a detailed examination of their operating parameters. In this article, we discuss material and operating parameter influences on the performance and efficiency of photovoltaic panels in a photovoltaic power plant. The plant consisted of 3600 pieces of polycrystalline PV panels from Renewable Energy Corporation (REC) Solar (type REC 230AE) with a maximum power of 230 Wp. Parameter measurements were made three years after the power plant was started. The measured and computed data were statistically processed using multidimensional statistical methods where the relationships between input and output variables were examined, which was subsequently quantified by regression analysis. Using the ANOVA, the variability of the measured efficiency of the panels and the performance for individual years was examined. Efficiency has been found to increase significantly over the years. The reason for this is the statistically proven prevailing operating time of the PV power plant in conditions with lower temperature than standard operating conditions (25 °C). Ageing was not confirmed in optimal conditions and calculated efficiency was constant.
关键词： photovoltaics panel,photovoltaic power plant,efficiency,operational parameters,degradation rate
更新于2025-09-12 10:27:22
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[IEEE 2018 IEEE International Conference on Information and Automation (ICIA) - Wuyishan, China (2018.8.11-2018.8.13)] 2018 IEEE International Conference on Information and Automation (ICIA) - Research on Photovoltaic Power Generation Power Prediction Algorithm Based on Component Aging
摘要： The timely safety improvement of power system scheduling and the reasonable arrangement of various forms of power supply work are realized by the accurate photovoltaic power forecasting.Therefore, in order to achieve a more accurate forecast of photovoltaic power, In this paper, the photovoltaic power generation system based on the theory of the similar day output power of the defects in the prediction algorithm was improved, in the new algorithm consider the aging of components, so it is concluded that the power prediction more accurate.
关键词： Photovoltaic power generation,Prediction algorithm,Photovoltaic panel life cycle,Power prediction
更新于2025-09-11 14:15:04
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[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) - Research & Prospect of Cascade Hydro-photovoltaic-pumped Storage Hybrid Power Generation Technology
摘要： Development of renewable energy has become a key strategic measure for energy development in countries around the world. The technology of cascade hydro-photovoltaic- pumped storage hybrid power generation closely combines small cascade hydropower, photovoltaic(PV) power and pumped storage power generation, and realizes complementary optimization of these renewable resources. Taking the cascade hydro-photovoltaic-pumped storage combines power generation technology as the research object, this paper summarizes its research status in recent years, and discusses the prospects of three key technologies of multi-time-scale planning of hydro- photovoltaic-pumped storage power generation which adapts to complex dynamic and static operating conditions, dynamic safe operation interval analysis and cluster control of cascade hydro- photovoltaic hybrid system and intelligent dispatching and optimal control of cascade hydro-photovoltaic-pumped storage hybrid power station with consideration taken on stochastic behaviors. This paper aims to, suggesting research approaches for the research and relevant works on the technology development of cascade hydro-photovoltaic-pumped storage hybrid power generation.
关键词： photovoltaic power,Cascade hydropower,multi-energy hybrid power,pumped storage,renewable energy
更新于2025-09-11 14:15:04