Journal articles: 'Photovoltaic grid'

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Hu, Boxun, Yanan Chen, Desheng Kong, and Yiming Yao. "Large, grid-connected solar photovoltaic power plants renewable energy." Applied and Computational Engineering 7, no. 1 (July 21, 2023): 375–89. http://dx.doi.org/10.54254/2755-2721/7/20230328.

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As an essential part of renewable energy, the solar photovoltaic technic grows rapidly with two main types: off-grid and grid-connected systems. This paper focuses on grid-connected solar photovoltaic power plants and introduces the main physical principles of solar photovoltaics. Typical components of solar photovoltaic power plants are also presented, along with their functions. The extraordinary environmental impact and the relatively low and decreasing cost of grid-connected solar photovoltaics reflect its excellent development potential. Compared with other energy, grid-connected solar photovoltaics provides an alternative to conventional fossil fuel generation. With the improvement of silicon purification technology and the working efficiency of solar batteries, the scale of grid-connected solar photovoltaics power plants will be further expanded.

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Wang, Ding, Ming Xu, Wei Cao, Luxi Hao, Lingyi Chen, and Zhihao Ning. "Analysis and Evaluation of Bearing Capacity of Distributed Photovoltaic Connected to Hunan Power Grid." Journal of Physics: Conference Series 2564, no. 1 (August 1, 2023): 012036. http://dx.doi.org/10.1088/1742-6596/2564/1/012036.

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Abstract The development of distributed power in Hunan Province is mainly photovoltaic, with an average annual growth rate of 16.4% in the past five years. By the end of October 2022, Hunan’s distributed photovoltaic installed capacity is 3.06 million kilowatts, accounting for 54.6% of the total photovoltaic installed capacity, which exceeds the centralized photovoltaic installed capacity. Due to the rapid large-scale development of distributed photovoltaics, it is common that the actual operation scale exceeds the contemporaneous planning. In addition, Hunan distributed photovoltaic access is concentrated in northern and southern Hunan, while in southern Hunan, due to a large number of local clean energy, a large number of distributed photovoltaic access will increase the output of terminal power supply, which can seriously cause the grid power flow to reverse. This paper takes the power grid topology in southern Hunan as an example of carrying out the bearing capacity assessment of regional distributed photovoltaic access to the power grid. This method guides the rational layout of distributed photovoltaics and stably ensures the operation of the Hunan power grid.

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Fyali, Jibji-Bukar, and Anaya-Lara Olimpo. "Offline Photovoltaic Maximum Power Point Tracking." E3S Web of Conferences 64 (2018): 06007. http://dx.doi.org/10.1051/e3sconf/20186406007.

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As more renewable energy sources are connected to the electrical grid, it has become important that these sources participate in providing system support. It has become needful for grid-connected solar photovoltaics to participate in support functions like frequency support. However, photovoltaic systems need to implement a maximum power tracking algorithm to operate at maximum power and a method for de-loading photovoltaic systems is necessary for participation in frequency support. Some conventional maximum power tracking techniques are implemented in real time and will not adjust their output fast enough to provide system support while other may respond fast but are not very efficient in tracking the maximum power point of a photovoltaic system. This paper presents an offline method to estimate the maximum power voltage and current based on the characteristics of the photovoltaics module available in the datasheet and using the estimated values to operate the photovoltaics at maximum power. The performance of this technique is compared to the conventional technique. This paper also describes how the photovoltaic system can be de-loaded.

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Wang, Zheng, Yanli Xiao, Ye Wan, Ke Liu, and Xiyuan Wang. "Research on energy management strategy of photovoltaic–battery energy storage system." International Journal of Low-Carbon Technologies 17 (2022): 488–93. http://dx.doi.org/10.1093/ijlct/ctac024.

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Abstract Photovoltaics have the advantages of being clean and renewable and have gained a wide range of applications. It is promising to use photovoltaic energy for the power supply of buildings, as the building sector accounts for a large portion of global energy consumption with a constantly increasing trend. However, photovoltaics are greatly affected by time and environment, and it is usually combined with batteries to form a photovoltaic–battery energy storage system to meet the load demand. This paper aims to analyze and compare energy management strategies of an on-grid solar photovoltaic–battery system for a real building project in a typical May and October region, but unlike other studies, the strategies used in this paper are very simple and easy to implement. It can also realize photovoltaic, battery and grid to meet the load power demand. Two strategies are used in this paper. Strategy 1 is to maximize the utilization of the energy generated by photovoltaics: while the energy generated by photovoltaics cannot meet the load demand, the battery will provide energy, and while the battery cannot meet the load demand, the grid will provide energy. The photovoltaic energy is given priority to the battery under the premise of meeting the load demand. Strategy 2 is to use the time-of-use electricity price, and the battery obtains cheap electricity at night to meet the load of the high electricity price the next day. The feasibility of the strategy used is demonstrated by actual data of buildings and photovoltaic–battery energy storage systems. This study can provide theoretical references for the energy management and system operation to facility managers and building occupants.

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Farghally, Hanaa M., Emad A. Sweelem, Mohamed I. Abu El-Sebah, and Fathy A. Syam. "Agricultural Grid Connected Photovoltaic System Design and Simulation in Egypt by using PVSYST Software." WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS 21 (December 31, 2022): 306–15. http://dx.doi.org/10.37394/23201.2022.21.33.

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Agricultural Photovoltaic Systems are a key technology to achieve sustainable development goals by reducing competition between land for food and electricity. In addition, Agricultural Photovoltaic Systems are at the heart of the link between power generation, crop production and irrigation water conservation. The main ecophysiological constraint on crop production under photovoltaics is the reduction of light. It is difficult to recommend shade tolerance for some plant varieties due to insufficient information on shading conditions for most plants. The use of shading panels (photovoltaic panels) requires more crop-specific research to determine the optimal percentage of panels and their placement that will not reduce agricultural yields. Crop yield variation versus field shading and availability to maximize the system require extensive research. This study aims to develop a standard procedure for designing an agricultural grid-connected photovoltaic power generation system for solar power generation in an agricultural area in Bahteem, Egypt. The technical and annual performance of the grid-connected PV system was simulated using PV Syst software. The paper started with a pre-feasibility study of a grid-connected photovoltaic system using PV Syst. Software with an extensive database of meteorological data, including global daily horizontal solar irradiance, and a database of various renewable energy system components from different manufacturers. In this work, a comprehensive literature review of agricultural solar photovoltaic systems is conducted, with a particular focus on grid-connected systems, followed by a design procedure for grid-connected solar photovoltaic systems. The planned photovoltaic system will generate a total of 400 KWp of electricity. This generated electricity can drive down electricity prices by exporting excess electricity to the national grid. In addition, solar power systems are fuel-efficient and have a low environmental impact.

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Farghally, Hanaa M., Emad A. Sweelem, Mohamed I. Abu El-sebah, and Fathy A. Syam. "Agricultural Grid Connected Photovoltaic System Design and Simulation in Egypt by using PVSYST Software." International Journal of Applied Sciences & Development 2 (April 10, 2023): 12–20. http://dx.doi.org/10.37394/232029.2023.2.2.

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Agricultural Photovoltaic Systems are a key technology to achieve sustainable development goals by reducing competition between land for food and electricity. In addition, Agricultural Photovoltaic Systems are at the heart of the link between power generation, crop production and irrigation water conservation. The main ecophysiological constraint on crop production under photovoltaics is the reduction of light. It is difficult to recommend shade tolerance for some plant varieties due to insufficient information on shading conditions for most plants. The use of shading panels (photovoltaic panels) requires more crop-specific research to determine the optimal percentage of panels and their placement that will not reduce agricultural yields. Crop yield variation versus field shading and availability to maximize the system require extensive research. This study aims to develop a standard procedure for designing an agricultural grid-connected photovoltaic power generation system for solar power generation in an agricultural area in Bahteem, Egypt. The technical and annual performance of the grid-connected PV system was simulated using PV Syst software. The paper started with a pre-feasibility study of a grid-connected photovoltaic system using PV Syst. Software with an extensive database of meteorological data, including global daily horizontal solar irradiance, and a database of various renewable energy system components from different manufacturers. In this work, a comprehensive literature review of agricultural solar photovoltaic systems is conducted, with a particular focus on grid-connected systems, followed by a design procedure for grid-connected solar photovoltaic systems. The planned photovoltaic system will generate a total of 400 KWp of electricity. This generated electricity can drive down electricity prices by exporting excess electricity to the national grid. In addition, solar power systems are fuel-efficient and have a low environmental impact.

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Wang, Shihao, Xujing Tang, Xionghang Liu, and Chen Xu. "Research on Low Voltage Ride through Control of a Marine Photovoltaic Grid-Connected System Based on a Super Capacitor." Energies 15, no. 3 (January 29, 2022): 1020. http://dx.doi.org/10.3390/en15031020.

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With the increase of photovoltaic penetration rate, the fluctuation of photovoltaic power generation affects the reliability of ship power grids. Marine PV grid-connected systems with high penetration rates should generally have a low voltage ride-through capability. In the present paper, a strategy in which super capacitors are applied for energy storage in a marine photovoltaic grid-connected system is proposed, and an inverter adopts independent decoupling control of active and reactive currents to improve the LVRT capability of photovoltaic grid-connected systems. In addition, a comprehensive control strategy is also designed to control the supercapacitor, to regulate the active power through the control method of the voltage outer loop and the current inner loop, in order to maintain the DC bus voltage stability. At the same time, the inverter can increase the reactive power output to support the grid voltage. The advantage of this system is in smoothing the power imbalance in a short time, enhancing the low voltage ride-through capability of the photovoltaic grid-connected system, improving the power quality, and ensuring the safety and stability of the ship’s power grid. MATLAB/Simulink were employed to establish a ro-ro ship super capacitor–marine photovoltaic grid-connected power system model and to carry out simulation experiments by setting the grid voltage drop. The results show that when the grid voltage drops, the inverter adjusts the distribution of active and reactive power. The power factor drops from 1 to 0.77, and the effective value of the voltage drop increases from 150 V to 156 V, which proves that this strategy effectively reduces the depth of the grid voltage drop and improves the low voltage ride-through capability of the photovoltaic grid-connected system.

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Yang, Shu-Xia, Yang Zhang, and Xiao-Yu Cheng. "Economic modeling of distributed photovoltaic penetration considering subsidies and countywide promotion policy: An empirical study in Beijing." Journal of Renewable and Sustainable Energy 14, no. 5 (September 2022): 055301. http://dx.doi.org/10.1063/5.0102574.

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Distributed photovoltaic power generation will not only help to achieve the strategic targets of peaking carbon emissions and carbon neutrality but also cause a series of impacts on the power grid at the same time. Forecasting the long-term development of regionally distributed photovoltaics can provide a reference for power grid planning and stable operation. In this paper, considering the effect of factors such as subsidies and countywide promotion policy of photovoltaics, a forecasting model for the development tendency of regionally distributed photovoltaics based on system dynamics is established. Then, taking Beijing as an example, an empirical analysis is carried out, and the effect of the proportion of self-consumption and the time when the subsidy is adjusted on distributed photovoltaic penetration is explored through sensitivity analysis. The simulation results show that the installed capacity achieved by the countywide promotion policy will become the main source of the installed capacity growth of distributed photovoltaics in Beijing after 2024. To continuously boost distributed photovoltaic penetration, relevant policymakers should consider the appropriate time when the subsidy is adjusted according to the installation cost of photovoltaic systems.

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Kouřím, P., M. Libra, and V. Poulek. "Off-grid photovoltaic system for illumination ." Research in Agricultural Engineering 61, No. 3 (June 2, 2016): 106–10. http://dx.doi.org/10.17221/25/2014-rae.

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The off-grid photovoltaic (PV) system with batteries and with the LED light source was constructed and tested in in laboratory conditions. The PV system is used for emergency illumination and it is independent of the electric grid. The PV system is suitable for example in agriculture in store, in horse barn or in outdoors place. Description of the construction and testing is presented in this paper as well as results of the tests. The PV system was self-sufficient during the summer and autumn period till the November 3, 2011. Since November the illumination mode was modified. The illumination intensity was lowered, the discharging speed was decreased.

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Cararo, José A. G., João Caetano Neto, Wagner A. Vilela Júnior, Márcio R. C. Reis, Gabriel A. Wainer, Paulo V. dos Santos, and Wesley P. Calixto. "Spatial Model of Optimization Applied in the Distributed Generation Photovoltaic to Adjust Voltage Levels." Energies 14, no. 22 (November 10, 2021): 7506. http://dx.doi.org/10.3390/en14227506.

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The main objective of this work is to develop a methodology for analyzing the quality of the voltage level in the distribution power grid to identify and reduce the violations of voltage limits through the proposition of optimal points for the allocation of photovoltaic distributed generation. The methodology uses the geographic location of the power grid and its consumers to perform the grouping and classification in spatial grids of 100 × 100 m using the average annual consumption profile. The generated profiles, including the grid information, are sent to the photovoltaic distributed generation allocation algorithm, which, using an optimization process, identifies the geographic location, the required installed capacity, and the minimum number of photovoltaic generation units that must be inserted to minimize the violations of voltage limits, respecting the necessary restrictions. The entire proposal is applied in a real feeder with thousands of bars, whose model is validated with measurements carried out in the field. Different violations of voltage limits scenarios are used to validate the methodology, obtaining grids with better voltage quality after the optimized allocation of photovoltaic distributed generation. The proposal presents itself as a new tool in the work of adapting the voltage of the distribution power grid using photovoltaic distributed generation.

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Kedar, Sourabh, and Mr Santosh Singh Negi. "Challenges in Grid Integration of Renewable Energy Systems via Inverter: A Survey." SMART MOVES JOURNAL IJOSCIENCE 7, no. 3 (March 27, 2021): 30–33. http://dx.doi.org/10.24113/ijoscience.v7i3.369.

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Solar photovoltaic (PV) systems have mainly been used in the past decade. Inverter-powered photovoltaic grid topologies are widely used to meet electricity demand and to integrate forms of renewable energy into power grids. Meeting the growing demand for electricity is a major challenge today. This paper provides a detailed overview of the topological trend of inverters with connection to the photovoltaic grid, as well as the advantages, disadvantages and main characteristics of the individual inverters. For proper integration into a network, coordination between the supporting devices used for reactive power compensation and their optimal reactive power capacity for grid current stability is important.

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Li, Yan Qing, Fu Ju Wang, and Man Man Yang. "A Simple Analysis of the Influence on Power Quality from Grid Photovoltaic Power Generation System." Advanced Materials Research 347-353 (October 2011): 70–74. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.70.

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As the increasing proportion of photovoltaic power generation in power grid, the influence from grid photovoltaic power generation to power quality is more and more significant. This paper analyzes the reasons of voltage fluctuation, voltage flicker and harmonics aroused by the photovoltaic energy grid, and summarizes the effects to other power quality index from photovoltaic energy grid. Then it puts forward the improvement actions, which has certain directive significance to the grid planning on photovoltaic power generation.

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Yu, Guanyi, Weidong Chen, Junnan Wang, and Yumeng Hu. "Research on Decision-Making for a Photovoltaic Power Generation Business Model under Integrated Energy Services." Energies 15, no. 15 (August 4, 2022): 5665. http://dx.doi.org/10.3390/en15155665.

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The 14th Five-Year Plan for renewable energy development proposes that renewable energy should achieve high-quality leapfrog development during the 14th Five-Year Plan period. The rapid development of integrated energy services has created more market opportunities for photovoltaics, and the photovoltaic (PV) industry has entered a new stage. In this study, from the perspective of stakeholders of a PV micro-grid under integrated energy services, a decision model for a PV micro-grid business model was established with the help of fuzzy mathematical theory. The MATLAB platform was used to carry out the decision analysis and simulation of the PV micro-grid business model. The simulation results showed that the self-consumption business model had the best overall performance among the current three different business models. It was also the business model with the highest comprehensive correlation with the government, power grids, investors, and users. Studying the best business model for PV micro-grids under integrated energy services has practical significance as it provides guidance and promotes faster and better development of PV micro-grids under integrated energy services.

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Ma, You Jie, Cheng Liao, and Xue Song Zhou. "Research of Photovoltaic Grid System Voltage Stability Based on the Bifurcation Theory." Advanced Materials Research 413 (December 2011): 79–83. http://dx.doi.org/10.4028/www.scientific.net/amr.413.79.

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In grid-connected photovoltaic system, the inverter, grid device, power electronic devices etc. They consume a large quantity of reactive power; mostly in distribution system, a perceptual load must also consume reactive power, these makes big interference interconnection of photovoltaic system after serious test the voltage stability. Therefore, carry on research of voltage stability in grid-connected photovoltaic system has important significance. With the voltage stability, voltage quality, analysis the possible influence of photovoltaic grid power system on power grid in safe and stable operation. Discuss probable bifurcation behavior in photovoltaic grid system. Introduce the basic concept of bifurcation, and then review the application of bifurcation theory in research of voltage stability from two aspects: static bifurcation and dynamic bifurcation. Finally take a look at bifurcation theory research of photovoltaic grid system voltage stability.

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Baena, Francisco, Francisco José Muñoz-Rodriguez, Pedro Gómez Vidal, and Gabino Almonacid. "A New Approach to Estimate from Monitored Demand Data the Limit of the Coverage of Electricity Demand through Photovoltaics in Large Electricity Grids." Sensors 20, no. 16 (August 6, 2020): 4390. http://dx.doi.org/10.3390/s20164390.

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In a traditional large electricity grid without storage, there is a limit to the maximum photovoltaic energy that can be consumed as the demand and generation may not match, either in magnitude or in time. This paper aims to provide a new method to estimate the limit of the coverage of electricity demand by photovoltaics in large electricity grids. This new method eliminates the random and the periodic variability over time as it is based either on the load duration curve for demand and the output duration curve for PV generation. We will assume there is no energy storage or inter-network exchanges. Moreover, conditions for the best scenario for photovoltaics are provided in order to estimate the upper limit: photovoltaic overgeneration is not considered and a complete system flexibility is assumed. The knowledge of this limit will manage to provide not only a reference for the planning of the energy sector but also to analyze the viability of the integration of future photovoltaic projects in the electrical system. In order to illustrate the method, several large electricity grids have been analysed in order to determine the aforementioned limit. Values between 19.3% and 29.9% have been obtained.

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Wu, Xing Quan, Qiu Peng Li, and Yan Li. "Optimization of Photovoltaic Grid-Connected Inverter System." Advanced Materials Research 722 (July 2013): 161–65. http://dx.doi.org/10.4028/www.scientific.net/amr.722.161.

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In order to increase the stability of grid connection of photovoltaic plant, effort has been made to study the grid connection principle of photovoltaic plant, mathematical model of grid-connected photovoltaic inverter and power grid distributed parameters, and improve traditional space vector control theory to keep d axis of d-q rotating coordinates consistent with the rotating space vector of network voltage and realize decoupling control over active power and reactive power of grid-connected photovoltaic system, through real-time detection of fluctuations in grid-connected current and network voltage, get voltage current dual-loop to place feedback control, which effectively compensates the modulating signal of inverter, reduces photovoltaic grid-connected output voltage and current harmonics so that the system has better robustness, and improves the reliability of grid connection.

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He, Qingsu, Muqing Wu, Pei Sun, Jinglin Guo, Lina Chen, Lihua Jiang, and Zhiwei Zhang. "Research on Charging Mechanism of Electric Vehicle Biased to Photovoltaic Nearby Absorption Strategy." Electronics 11, no. 20 (October 20, 2022): 3407. http://dx.doi.org/10.3390/electronics11203407.

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With the promotion of the pilot development of distributed whole county roof photovoltaics in China, problems such as power consumption, energy regional balance, and grid stability have become prominent. In this paper, an application mode of electric vehicle (EV) charging network and distributed photovoltaic power generation local consumption is studied. The management idea of two-layer and four model has been established, including the regional distributed photovoltaic output model, electricity consumption model, EV consumption model, and regional grid load dispatching model, which can realize the scheduling of the energy flow formed by photovoltaic, induce the charging of EVs, and make the photovoltaic consumption in office building areas and residential building areas complementary. Firstly, according to the randomness of photovoltaic power generation and EV charging, the dynamic response capability, power support capability, effective convergence time, system stability, system failure rate, and other characteristics of regional loads are comprehensively analyzed, and the grid energy management model of EV charging network and distributed photovoltaic is proposed. Secondly, according to certain statistical characteristics, the distributed photovoltaic will be concentrated, and EV charging will be prioritized to achieve nearby consumption. Finally, different scenarios are described, and the scenarios of charging in the park, community life, and power supply service are selected for analysis. This mode is intended to guide the consumption of new energy through economic leverage, which can realize the unified regulation of distributed energy convergence, consumption and storage.

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JI, Cui, Siming HUA, Bingbing ZOU, Hua ZHANG, Chang DIAO, Guofa ZHOU, and Bo MIN. "Monitoring and Analysis of Power Quality in Photovoltaic Power Generation System." E3S Web of Conferences 64 (2018): 06008. http://dx.doi.org/10.1051/e3sconf/20186406008.

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Solar photovoltaic (PV) has been developed rapidly due to its clean and green renewable characteristics. The connection of photovoltaic power generation to the traditional grid system is bound to bring power quality problems. Based on above, this paper introduces the power quality testing method of photovoltaic grid-connected power grid in detail. And then takes the Shanghai Qingpu Nanrong distributed photovoltaic power generation for example, which is the largest single roof photovoltaic power station in Shanghai by far, to use the method to test its power quality. The power quality index include harmonic, voltage imbalance, and frequency deviation. The test and analysis provide a reference for the monitoring and analysis of power quality of photovoltaic grid-connected power grid.

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Azzahra, Septianissa, Agus Yogianto, and Ibnu Hajar. "Studi Dampak Level Penetrasi Pembangkit Listrik Fotovoltaik pada Jaringan Distribusi." Energi & Kelistrikan 11, no. 1 (July 4, 2019): 1–8. http://dx.doi.org/10.33322/energi.v11i1.388.

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Recently distribution network have connected with power plant unit also with photovoltaic power plant. Therefore voltage profile of distribution grid not any more distance from source there is voltage drop but connected with photovoltaic power plant would be increase grid voltage in this connected point also in the grid line. In this study, the distribution grid with connected with photovoltaic power plant is modelled. By using through MATHLAB / SIMULINK, modeling and simulation can be done ondistribution grid with two point connected to the photovoltaic power plant. From the simulation and analysis obtained, that power injection to grid by photovoltaic power plant can affect voltage grid condition, but not affect grid frequency relatively. The grid voltage will increase if there is power injection to the connected point in grid. Increase the power penetration to the grid would be increase the rise voltage in the grid. The constraint in this case, that power penetration must be considered the condition of quality voltage because any trend for voltage wave become distorted.

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Tan, Zhiguang, Ning Wu, Yi Zheng, and Weidong Chen. "Study on the influence of grid connected capacity difference of photovoltaic power generation on power grid performance." Journal of Physics: Conference Series 2310, no. 1 (October 1, 2022): 012003. http://dx.doi.org/10.1088/1742-6596/2310/1/012003.

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Abstract Due to the integration of photovoltaic power generation system, the structure of traditional distribution network will change, and then the grid system after grid connection is in an abnormal working state. If relevant measures are not taken, the operation quality of grid cannot be guaranteed. Therefore, based on the working principle of photovoltaic cells, this paper studies its equivalent model and output characteristics, builds a single-stage three-phase photovoltaic grid connected system on PSCAD platform, verifies the correctness of power control strategy, analyses the impact of photovoltaic grid connection on distribution network loss and voltage, establishes a 33 node model for example analysis, and simulates the grid connection of photovoltaic power generation system under different capacities and locations for many times, the calculation example of determining the location and capacity of photovoltaic grid connected power generation system is analysed, and a multi-objective mathematical model is proposed based on DG cost and active power loss. The installation quantity, capacity and location of DG are deeply studied, and the optimization function is carried out based on genetic algorithm, so as to realize the minimum impact condition of photovoltaic grid connected power generation on power quality of distribution network, and then realize the optimal configuration of photovoltaic power generation system.

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Zhu, Shaofei, and Chao Hu. "Design of A Grid-connected Control System for Distributed Photovoltaic Power Generation Based on PLC." Journal of Physics: Conference Series 2399, no. 1 (December 1, 2022): 012024. http://dx.doi.org/10.1088/1742-6596/2399/1/012024.

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Abstract Distributed photovoltaics interfere with continuous power generation after grid connection. In the face of the failure of a single module, the current grid-connected control system needs to readjust system parameters to flexibly adapt to equipment operating conditions. Therefore, this paper is researching a photovoltaic power generation grid-connected control system based on PLC. In the hardware part, PLC is used to complete power generation control, monitoring MCU, data acquisition, control, and other modules. In the software part, the grid-connected state is optimized and controlled according to the distributed photovoltaic output power and the remaining energy storage capacity. The PLC is the execution center, which will control the on-off state of the equipment switch after the data operation. The experimental results show that the designed system can optimally control the power generation and energy storage units according to the power change, reduce the cost of electricity consumption through the adjustment of charge and discharge, reduce the IO usage rate, and improve the concurrent response ability of users. The design system not only guarantees the quality and efficiency of photovoltaic grid connection but also realizes rapid networking and independent tracking of power points to meet the requirements of flexible communication.

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Ngo, Tuan, and Surya Santoso. "Grid-connected photovoltaic converters: Topology and grid interconnection." Journal of Renewable and Sustainable Energy 6, no. 3 (May 2014): 032901. http://dx.doi.org/10.1063/1.4876415.

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Maurer, Florian, Christian Rieke, Ralf Schemm, and Dominik Stollenwerk. "Analysis of an Urban Grid with High Photovoltaic and e-Mobility Penetration." Energies 16, no. 8 (April 12, 2023): 3380. http://dx.doi.org/10.3390/en16083380.

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This study analyses the expected utilization of an urban distribution grid under high penetration of photovoltaic and e-mobility with charging infrastructure on a residential level. The grid utilization and the corresponding power flow are evaluated, while varying the control strategies and photovoltaic installed capacity in different scenarios. Four scenarios are used to analyze the impact of e-mobility. The individual mobility demand is modelled based on the largest German studies on mobility “Mobilität in Deutschland”, which is carried out every 5 years. To estimate the ramp-up of photovoltaic generation, a potential analysis of the roof surfaces in the supply area is carried out via an evaluation of an open solar potential study. The photovoltaic feed-in time series is derived individually for each installed system in a resolution of 15 min. The residential consumption is estimated using historical smart meter data, which are collected in London between 2012 and 2014. For a realistic charging demand, each residential household decides daily on the state of charge if their vehicle requires to be charged. The resulting charging time series depends on the underlying behavior scenario. Market prices and mobility demand are therefore used as scenario input parameters for a utility function based on the current state of charge to model individual behavior. The aggregated electricity demand is the starting point of the power flow calculation. The evaluation is carried out for an urban region with approximately 3100 residents. The analysis shows that increased penetration of photovoltaics combined with a flexible and adaptive charging strategy can maximize PV usage and reduce the need for congestion-related intervention by the grid operator by reducing the amount of kWh charged from the grid by 30% which reduces the average price of a charged kWh by 35% to 14 ct/kWh from 21.8 ct/kWh without PV optimization. The resulting grid congestions are managed by implementing an intelligent price or control signal. The analysis took place using data from a real German grid with 10 subgrids. The entire software can be adapted for the analysis of different distribution grids and is publicly available as an open-source software library on GitHub.

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Sharma, Shivam, and Durgesh Kumar. "Modeling of Photovoltaic Based Grid-Tied System." International Journal of Advance Research and Innovation 2, no. 2 (2014): 103–11. http://dx.doi.org/10.51976/ijari.221415.

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Energy consumption in world is now increasing substantially. Increasing scarcity and rising prices of fossil fuels may lead to economic instability. Continuously increasing in energy consumption will overloads the distribution grids as well as the power stations, therefore imposing a negative impact on power availability, security and quality. One of the solutions for overcoming this is use of renewable energy resources. The energy generation from PV based Grid-Tied System is highly intermittent in nature and shows wide variation because of continuous fluctuations in solar radiation intensity, temperature and unpredictable weather conditions (e.g. clouds, snow, wind, etc.). This poses a major challenge for the designers of grid connected PV systems for its applications. One of the major problems is the increase in the Total Harmonic Distortion (THD) of current injected into the grid. In this paper basic theory of grid connected photovoltaic system and proposes a new scheme for Total Harmonic Distortion (THD) improvement in grid connected Photovoltaic (PV) systems. A hysteresis current control method is introduced in this paper which is providing a PV system with reduced harmonics at the output. This Logic control can be used to improve the THD in grid connected PV systems. The whole system is modeled on MATLAB/SIMULINK. The Simulation results are given to show the overall system performance.

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Yang, Shu Ying, Li Hong Wu, and Zhao Xia Liu. "Research on Photovoltaic Grid-Connected Generation System." Advanced Materials Research 383-390 (November 2011): 4084–89. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.4084.

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This dissertation researches on photovoltaic grid-connected generation system. Photovoltaic grid-connected generation system has two core parts which are maximum power tracking control(MPPT) of photovoltaic cells and the control of the grid-connected inverter. Firstly,this paper introduces the operational principle and performance characteristic of photovoltaic cells,and describes the equivalent circuit and mathematical model. Secondly,this paper introduces several traditional MPPT control algorithms. Based on the maximum power of the fast track process and stability, an improved intermittent scan method is designed to implement the maximum power output in the photovoltaic grid-connection generation system and improve system performance and maximum power point tracking speed. Finally, this dissertation analyses the targets of grid-connected inverter control and studies the control strategies, and then designs mathematical model of control system in photovoltaic grid-connected voltage/current inverter based on Sinusoidal Pulse Width Modulation (SPWM).

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Chitkusheva-Dimitrovska, Biljana, Marko Cepin, Roman Golubovski, and Hristina Spasevska. "Modeling photovoltaic grid inter-shading." Thermal Science 24, no. 6 Part B (2020): 4183–95. http://dx.doi.org/10.2298/tsci200116169c.

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Photovoltaic energy conversion is an efficient renewable source affordable as a technology even on the household level. Several technological aspects are subject to continuous improvement. This paper tackles the possibilities for denser panel population of a photovoltaic plant thus more efficient space utilization. The objective is to develop a mathematical model of inter-shading among the photovoltaic panels. The model calculates the electrical energy obtained from panels and considers the shading among the panels. The geographical location of the plant location, the distances between the solar panels and their angle of inclination, the dimensions of the panels and the time interval under evaluation are the parameters which are important for placing the power plant. The results show how much electric energy can be obtained from a certain set of photovoltaic panels. The results indicate, what are the distances between the panels for better allocation of resources when deciding on the number of solar panels and their arrangement.

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Szpulak, Piotr, Szczepan Paszkiel, Stanisław Wawrzyniak, and Mirosław Gryszpiński. "INVESTMENT PROFITABILITY ANALYSIS OF AN ON-GRID PHOTOVOLTAIC SYSTEM." Informatics Control Measurement in Economy and Environment Protection 7, no. 2 (June 30, 2017): 36–39. http://dx.doi.org/10.5604/01.3001.0010.4835.

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The potential of the solar energy sector is starting to become increasingly important. The possibility to produce electrical power for household needs, as a result of an investment in photovoltaics is gaining popularity, and storing its surplus in a power grid and settlement of its consumption on the basis of an annual balance, allows to limit electricity bills to the minimum. The implementation stage, which promotes investing in solar renewable energy for own household needs was introduced by the new Act on RES, promoting the prosumer On-Grid system. The paper focuses on presenting the analysis of profitability of installing photovoltaic On-grid systems.

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Zhou, Xue Song, Jin Li, and You Jie Ma. "The Review of Photovoltaic Power System and Chaos Phenomenon." Advanced Materials Research 308-310 (August 2011): 193–96. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.193.

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This article introduces the composition and classification of Photovoltaic power system, makes Photovoltaic Grid Power System as an example, and Research the problem that is met in the grid operation process—Chaos Oscillation. For Chaos Oscillation problem in the Photovoltaic Grid Power System, paper elaborates conventional control method on Chaos, comes up with the theory that is applied to control method in Chaos Oscillation using Feedback Linearization to design a tracking controller to make Chaos Oscillation disappear in Photovoltaic Grid Power System.

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Li, Hongxia, Jianlin Li, and Yang Mi. "Research on Photovoltaic power prediction technology Based on Machine Learning." Journal of Physics: Conference Series 2087, no. 1 (November 1, 2021): 012004. http://dx.doi.org/10.1088/1742-6596/2087/1/012004.

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Abstract In recent years, the photovoltaic power generation has obvious intermittent, randomness and volatility, and high permeability photovoltaic will have a huge impact on the safety and stability of the grid. The prediction of photovoltaic power generation is to improve the quality of photovoltaic grid, optimize grid scheduling, and ensure the basic technology of power grid safety and stability. In order to improve the prediction accuracy of photovoltaic power generation, this article will comprehensively carding and compare from 3 dimensions: photovoltaic power generation and meteorological factor correlation analysis, similar day selection, prediction method based on machine learning, and summarize the advantages and disadvantages of various methods. Further research has been put forward accordingly.

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Rong-Jong Wai and Wen-Hung Wang. "Grid-Connected Photovoltaic Generation System." IEEE Transactions on Circuits and Systems I: Regular Papers 55, no. 3 (April 2008): 953–64. http://dx.doi.org/10.1109/tcsi.2008.919744.

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Saha, S., and V. P. Sundarsingh. "Novel grid-connected photovoltaic inverter." IEE Proceedings - Generation, Transmission and Distribution 143, no. 2 (1996): 219. http://dx.doi.org/10.1049/ip-gtd:19960054.

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Wang, Yi Wang, Bo Zhang, Cao Kai, and Zhang Shuai. "Design and Application of a Medium/Low-Power Stand-Alone/Grid-Connected Dual-Mode Inverter for Solar Photovoltaic System." Applied Mechanics and Materials 672-674 (October 2014): 131–34. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.131.

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The application of solar photovoltaic poer genernation usually has stand-alone and grid-connected modes,but most of the existing solar photovoltaic inverter has only a single function of off-grid or grid-connected,the suitability of system is relatively poor, difficult to meet the needs of the particular application. A medium and low-power stand-alone/grid-connected dual-mode inverter for solar photovoltaic system was designed,the composition, working principle and implementation of the inverter were introduced and developed.The designed inverter with a variety of functions,which can meet stand-alone or grid-connected and other solar photovoltaic applications, and can be used in different solar occasions.

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Loschi, H. J., L. A. S. Ferreira, D. A. Nascimento, P. E. R. Cardoso, S. R. M. Carvalho, and F. D. Conte. "EMC Evaluation of Off-Grid and Grid-Tied Photovoltaic Systems for the Brazilian Scenario." Journal of Clean Energy Technologies 6, no. 2 (March 2018): 125–33. http://dx.doi.org/10.18178/jocet.2018.6.2.447.

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Mr. Amol Barve, Mrs Ruchi Singh Chauhan. "MPSO-MPPT based Single Phase Grid PV System for Power Enhancement." SMART MOVES JOURNAL IJOSCIENCE 4, no. 4 (April 20, 2018): 12. http://dx.doi.org/10.24113/ijoscience.v4i4.129.

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The solar power became a challenging area among other renewable energy sources (RESs) since the photovoltaic (PV) systems have the benefits of not inflicting pollution, having low maintenance, and durable operation life. Besides these benefits, a PV system has many drawbacks like significantly higher installation cost comparing some other RESs, and limited potency ranges between 9–18%. The feasibility analyses have a good role so as to work out the foremost appropriate plant site before installation. On the other hand, the operating analyses and enhancements supported maximum power point tracking (MPPT) are quite necessary to extend the harvested total energy. To maximize the performance of solar photovoltaics (PV) under dynamic climatic conditions, MPPT (Maximum Power Point Tracking) controllers are integrated into photovoltaic systems. This research presents a modified PSO algorithm based on the method of tracking the maximum global power point used for photovoltaic systems with variable co-efficient. The modified PSO (MPSO) algorithm is able to trace the maximum global power point faster. This improves the effectiveness of follow-up. Simulation results show that MPSO coordination control methods have better tracking accuracy as compared to P&O as well as PSO MPPT Technique. This also improves the energy efficiency of the photovoltaic system.

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Luo, Yun, and WenLing Lu. "Power output control method of small power photovoltaic grid connected power generation under complex illumination." Journal of Physics: Conference Series 2195, no. 1 (February 1, 2022): 012052. http://dx.doi.org/10.1088/1742-6596/2195/1/012052.

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Abstract Due to the irregular change of lighting conditions, there is a large error in the control of photovoltaic grid connected power output. Therefore, this paper proposes proposes a power output control method for low-power photovoltaic grid-connected power generation considering complex illumination. Based on the analysis of the basic characteristics of photovoltaic grid connected power generation, the output characteristics of photovoltaic array under complex lighting conditions are studied. Combined with its variation characteristics, based on fuzzy control strategy, the output of photovoltaic grid connected energy storage system is adjusted by filter control with variable time constant, and economic operation and stable operation are taken as constraints. The test results show that the design method has a high degree of fit between the control of photovoltaic grid connected power output and the actual results, and the error is within a reasonable range, which is obviously due to the two groups of comparison methods.

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Gómez-Uceda, F. J., M. Varo-Martínez, J. C. Ramírez-Faz, R. López-Luque, and L. M. Fernández-Ahumada. "Benchmarking Analysis of the Panorama of Grid-Connected PV Installations in Spain." Technologies 10, no. 6 (December 13, 2022): 131. http://dx.doi.org/10.3390/technologies10060131.

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Renewable energies play an important role as a solution to the challenge of satisfying the growing global energy demand without jeopardizing the achievements in the fight against climate change. Given this panorama, different countries, including Spain, have developed policies to promote renewable energies. One of the technologies that benefit from these policies is photovoltaics. In Spain, the number of grid-connected photovoltaic installations has increased significantly in recent years. It is interesting to analyze the panorama of these facilities and identify the trends in their design criteria. In this line, in this work, the projects of 70 grid-connected photovoltaic installations distributed across Spain were analyzed. For that purpose, benchmarking techniques were applied, facilitating the systematization of information, the intercomparison of plants and the identification of trends and efficient solutions. A set of characteristic indicators of each installation was defined, and a statistical analysis of them was developed. Likewise, a tool was developed that allows the designers of this type of photovoltaic plant to compare the design parameters chosen for their installations with those of the surrounding area. Therefore, this work provides knowledge about the current panorama of photovoltaic implementation applicable to its future advance.

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Xu, Yi, ErYong Zou, and FengPing Tang. "Intelligent Control Method for Loss Distribution Balance of High-Power Photovoltaic Grid-Connected Inverters." Computational Intelligence and Neuroscience 2022 (May 31, 2022): 1–10. http://dx.doi.org/10.1155/2022/7240834.

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Aiming at the problem that the loss distribution balance control effect of high-power photovoltaic grid-connected inverter is poor due to the complex loss factors, this paper proposes a loss distribution analysis and balance intelligent control method for high-power photovoltaic grid-connected inverter. The topology structure of high-power photovoltaic grid-connected inverter is constructed and the overall control scheme is designed. The loss of inductance, resonant frequency, harmonic attenuation, and damping resistance in the circuit of PV grid-connected inverter is analyzed, respectively. On this basis, a two-stage loss control model of high-power PV grid-connected inverter is constructed, and the generalized linear decision rule is adopted to schedule PV power supply and fluctuating load. A two-stage loss control model for high-power photovoltaic grid-connected inverter was established and the optimal loss control value was obtained. Experimental results show that the proposed method can accurately suppress voltage and current losses of grid-connected photovoltaic inverters and has strong resonance resistance and robustness.

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Hu, Bo, Zai Lin Piao, and Dong Sheng Zhou. "The Research on the Main Control Strategy in the Grid-Connected PV Systems." Applied Mechanics and Materials 448-453 (October 2013): 1465–69. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.1465.

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The maximum power tracking and Grid-connected is the urgent need to solve the problem which exists in the grid-connected PV system. This article expounds on the maximum power point tracking and grid inverter control strategy. It puts forward the control strategy of researching maximum power point tracking, which is effective in improving solar panels convert solar energy into energy. With the development of photovoltaic technology, requirements of photovoltaic grid control strategy are getting higher and higher. This article examines adaptive disturbance observed method integrated control combined BOOST boosted circuit, in order to achieve the maximum power point tracking for photovoltaic panels .The photovoltaic inverter control structure is to meet the photovoltaic conversion efficiency and power quality of the main technical indicators. It put to use double topology and feed forward decoupling control strategy, which provides protection for the flexible grid.

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Ganvir, Payal, and Radharaman Shaha. "Grid Connected Solar Photovoltaic Array with MPPT Matlab Simulation." International Journal of Trend in Scientific Research and Development Volume-3, Issue-4 (June 30, 2019): 484–87. http://dx.doi.org/10.31142/ijtsrd23832.

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Zhang, Zhihan, Qiaoyu Wang, Demou Cao, and Kai Kang. "Impact of Photovoltaics." Modern Electronic Technology 5, no. 1 (May 6, 2021): 5. http://dx.doi.org/10.26549/met.v5i1.6315.

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Photovoltaics (PV) can convert sunlight into electricity by making use of the photovoltaic effect. Solar panels consist of photovoltaic cells made of semiconductor materials (such as silicon) to utilise the photovoltaic effect and convert sunlight into direct current (DC) electricity. Nowadays, PV has become the cheapest electrical power source with low price bids and low panel prices. The competitiveness makes it a potential path to mitigate the global warming. In this paper, we investigate the relationship of PC array output with irradiance and temperature, the performance of PV array over 24 hours period, and the simulation of PV micro grid by MATLAB simulation.

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Wang, Ju Bo, Xiu Yang, Wei Bao, and Wen Li Xu. "Strategy for Grid-Connection Control of Photovoltaic System." Advanced Materials Research 1070-1072 (December 2014): 35–38. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.35.

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With more and more photovoltaic systems connected to the grid, a strategy for grid-connection control is proposed. The topology of PV inverter and photovoltaic inverter and the active and reactive power decoupling control of photovoltaic system are analyzed. The feasibility and effectiveness of the strategy for grid-connection control is verified by simulation and experiment by the case on the RTDS.

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Zhou, Xue Song, Mo Chen, and You Jie Ma. "Control Strategy of Photovoltaic Grid-Connected Inverter." Applied Mechanics and Materials 339 (July 2013): 554–57. http://dx.doi.org/10.4028/www.scientific.net/amm.339.554.

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As a key component of photovoltaic grid generation system, grid-connected inverter plays an important role, and its control is paid more attention to by people. After the introduction of principle and structure of grid-connected photovoltaic inverter, the paper describes the control objectives of grid-connected, represents several current control strategies of grid-connected inverter in detail, and indicates its future development trend finally.

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Xu, Min, Yan Cui, Tao Wang, Yaozhong Zhang, Yan Guo, and Xiaoying Zhang. "Optimal Dispatch of Wind Power, Photovoltaic Power, Concentrating Solar Power, and Thermal Power in Case of Uncertain Output." Energies 15, no. 21 (November 3, 2022): 8215. http://dx.doi.org/10.3390/en15218215.

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The integration of large-scale wind and photovoltaic power into modern power grids leads to an imbalance between the supply and demand for resources of the system, where this threatens the safety and stable operation of the grid. The traditional mode of grid dispatch and the capability of regulation of conventional thermal power units cannot satisfy the demands of grid connection for large-scale renewable energy, where the system requires the compensation and coordinated dispatch of flexible power sources. In light of this problem, this paper establishes a model to quantify the uncertainty in the forecasted outputs of wind and photovoltaic power. This is used to develop forecasts of the output of wind and photovoltaic power for several groups of scenarios, and predictions with the best complementarity are selected as a typical set of scenarios by means of their generation, reduction, and combination. By taking full advantage of the complementarity in the rates of regulation of conventional thermal power and concentrating solar power (CSP), a coordinated model of dispatch for wind power, photovoltaic power, CSP, and thermal power is established for a number of typical combinations of scenarios. The influence of uncertainty in the outputs of wind and photovoltaic power on the dispatch of the power grid is examined, and different modes of dispatch are formulated through simulations to analyze the superiority of the dispatch strategy proposed in this paper in terms of abandoned wind quantity, abandoned solar quantity, and the cost of dispatch.

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Zhenjie, Li, Hou Guangsong, Cheng Zhaolong, Niu Wenhui, and Hu Guohua. "Frequency regulation strategy of photovoltaic system based on system identification." E3S Web of Conferences 252 (2021): 02082. http://dx.doi.org/10.1051/e3sconf/202125202082.

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The large-scale grid connection of photovoltaic power generation results in the power system frequency fluctuation and frequency regulation capacity decline, which endangers the dynamic security of power grid frequency. In order to reduce the frequency deviation of power grid and tap the potential of photovoltaic power generation participating in frequency regulation, a control method of photovoltaic power participating in frequency regulation of power grid is proposed in this paper. The maximum allowable power of photovoltaic power is predicted through system identification, and the load shedding rate is determined based on this, and the output power is corrected according to the system frequency deviation to participate in frequency regulation of power grid. The model based on MATLAB Simulation results shows the effectiveness of the proposed method.

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Wu, Kui Hua, Wei Sun, Jian Wang, Shen Quan Yang, Yi Qun Wang, and Bo Li. "Design of the Three-Phase Photovoltaic Grid-Connected Inverter." Advanced Materials Research 986-987 (July 2014): 1938–41. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1938.

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Photovoltaic grid-connected power generation is the inevitable development trend of solar photovoltaic systems,grid inverter is an essential part of photovoltaic grid-connected power generation. With the developed three phase current type PWM inverter device as the research object, and symmetry rules sampling method is applied to the inverter, through the method combined by the computer simulation and experiment research, the device was verified by simulation and experimental .The results show that: This method could not only effectively reduce the DC side inductance volume of the current-mode PWM inverter , and it could make output AC currents sinusoidal and in phase with grid voltages, but also improve the efficiency of the system, it will be more suitable for photovoltaic grid-connected.

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ILIE, MIHĂIȚĂ-ALEXANDRU, and DAN FLORICĂU. "GRID-CONNECTED PHOTOVOLTAIC SYSTEMS WITH MULTILEVEL CONVERTERS – MODELING AND ANALYSIS." REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE 68, no. 1 (April 1, 2023): 77–83. http://dx.doi.org/10.59277/rrst-ee.2023.68.1.13.

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In this paper, a comparison between three double-stage grid-connection systems in central inverter configuration is presented. This configuration can be used to obtain a wide power range and is suitable for the connection to three-phase grids. In this case, the photovoltaic (PV) panels are connected to the inverter via a dc-dc converter to ensure an optimal dc voltage level. The focus is on the characteristics and properties of the used converter’s structures. All the design steps of a grid connection system are also presented. Both two-level (2L) and three-level (3L) voltage structures are implemented. At the end of the paper, a detailed analysis highlights the advantages and disadvantages of the three photovoltaic systems connected to the grid.

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Tunlasakun, Khanchai. "DSP - Based Islanding Protection for Photovoltaic Grid Connected Inverter." Applied Mechanics and Materials 291-294 (February 2013): 2007–10. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.2007.

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This research presents the DSP - based islanding protection for photovoltaic grid connected inverter with under / over frequency and under / over voltage islanding protection methods. The design is based on the TMS320VC33PGE digital signal processor on the NI SPEEDY 33 board from National Instrument Inc. The prototype is monitor the grid frequency and grid voltage at the point of common coupling (PCC) between the photovoltaic grid connected inverter, the local load and the distribution. The results of study, the prototype can turn off relay between photovoltaic grid connected inverter and utility grid when the frequency is change under 48Hz or over 52Hz and the voltage is change under 200V or over 240V.

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Du, Yang, Wei Cao, and Wan Xin Li. "Review of Economic Operation Optimization Strategy of Photovoltaic Grid-Connected System." Advanced Materials Research 860-863 (December 2013): 75–80. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.75.

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Economy is one of the main factors for the development of photovoltaic grid-connected system. From the view of economic operation in this article, four aspects of photovoltaic grid-connected system are reviewed, including the component modeling, the objective function, constraints and optimization strategies. Typical research methods used in economic operation are analyzed, and the key issues about photovoltaic grid-connected system operation are pointed out.

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Liu, Shaojie, Yingying Zhao, Wenhe Li, and Yuanchu Cheng. "Design and Implementation of Hardware in the Loop Simulation Test Platform for Photovoltaic Inverter." Journal of Physics: Conference Series 2532, no. 1 (June 1, 2023): 012018. http://dx.doi.org/10.1088/1742-6596/2532/1/012018.

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Abstract In order to ensure the performance and safety of photovoltaic grid connected inverter, based on hardware in the loop simulation technology, the design and implementation of photovoltaic grid connected inverter simulation and test platform are discussed. The system structure, principle and main functions of the platform are introduced. The simulation and test platform is composed of simulation and monitoring computer, simulation and measurement interface device, programmable power supply and test instruments. In the platform, the programmable DC power supply, the programmable AC power supply and RLC load is used to simulate the characteristics of solar panels, power grid and load respectively. The test process is controlled by LabWindows/CVI software interface, and the test data collection is completed through power quality analyser, power analyser, oscilloscope and simulation and measurement interface device. The simulation test software completes the data analysis and realizes the full-automatic detection of the grid connected inverter. The established hardware in the loop simulation test platform of photovoltaic grid connected inverter has the ability to conduct comprehensive test and detection of photovoltaic grid connected system, which can be used to verify and evaluate the photovoltaic inverter before it is connected to the power grid.

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Zhang, Xue Li, Qi Hui Liu, Bei Li, and Hui Meng Ma. "Analysis of Output Characteristics of Photovoltaic System." Advanced Materials Research 512-515 (May 2012): 17–22. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.17.

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The output of photovoltaic generation system is influenced by the factors such as solar radiation, temperature and so on. So the change of photovoltaic generation power is a non-stationary random process that will impact on the grid. In order to promote large-scale photovoltaic generation connected to the grid, we need to configure energy storage devices for photovoltaic power station and in order to coordinate the allocation of photovoltaic system with energy storage system, we requires a thorough understanding of output characteristics of the photovoltaic system. This paper firstly analyzes the influence brought by the large-scale photovoltaic generation system connected to the grid and then introduces the effect factors of photovoltaic output. Based on the history data of the 100 kWp photovoltaic power station and the statistical method, the paper qualitatively and quantitatively analyzes the photovoltaic output performance; finally puts forward the PV output power evaluation index. The conclusions of this study will provide powerful data references for follow-up studies and have practical value.

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Journal articles on the topic 'Photovoltaic grid'

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