Relevant bibliographies by topics / Wind and solar generations

Academic literature on the topic 'Wind and solar generations'

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Published: 4 July 2023

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Journal articles on the topic "Wind and solar generations"

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Prajapati, Urvashi, Deepika Chauhan, and Md Asif Iqbal. "Hybrid Solar Wind Power Generation." International Journal of Trend in Scientific Research and Development Volume-2, Issue-3 (April 30, 2018): 1533–37. http://dx.doi.org/10.31142/ijtsrd11359.

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Xu, Nan, Shan Shan Li, and Hao Ming Liu. "Distribution System Fault Recovery with Undispatchable Distributed Generations." Applied Mechanics and Materials 529 (June 2014): 455–59. http://dx.doi.org/10.4028/www.scientific.net/amm.529.455.

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Considering the probabilistic of the wind power and the solar power, a fault recovery method for distribution systems with the wind power and the solar power is presented in this paper. For the wind power, a simplified steady-state equivalent model of an asynchronous wind generator is added into the Jacobian matrix to consider the impact of the wind power on systems. For the solar power, its output is considered as an injected power which is related with solar irradiance. Three-point estimate is employed to solve the probabilistic power flow of distribution systems with the wind power and the solar power. The restoration is described as a multi-objective problem with the mean of the system loss and the number of switch operations. Fast elitist non-dominated sorting partheno-genetic algorithm is used to solve this multi-objective problem. IEEE 33-bus system is used as an example and the results show that the models and algorithms in this paper are efficient.
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Reddy, D. C. K., S. S. Narayana, and V. Ganesh. "Performance of DQ Based Controller for Solar Wind Hybrid Power System." Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 12, no. 2 (February 28, 2019): 96–104. http://dx.doi.org/10.2174/2352096511666180514111606.

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Background: This paper presents a compensation technique to improve the efficiency of a microgrid (MG) in the distribution system. Methods: A Direct-Quadrature (D-Q) based compensation technique is proposed to mitigate the power quality issues in Microgrid on the load side. The proposed model is used to control and balance the power generation to load demand in MG under different loading conditions. Renewable Energy Source (RES) Photovoltaic (PV) and Wind based generations are considered as two micro generations and are integrated with the conventional power system. Result: The proposed model can be used as plug and play mode operation of MG. Conclusion: The performance of proposed compensation techniques is analyzed in the MATLAB / Simulink environment and the simulation results exhibit satisfactory controller action.
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Abedi, Sajjad, Gholam Hossein Riahy, Seyed Hossein Hosseinian, and Arash Alimardani. "Risk-Constrained Unit Commitment of Power System Incorporating PV and Wind Farms." ISRN Renewable Energy 2011 (December 19, 2011): 1–8. http://dx.doi.org/10.5402/2011/309496.

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Wind and solar (photovoltaic) power generations have rapidly evolved over the recent decades. Efficient and reliable planning of power system with significant penetration of these resources brings challenges due to their fluctuating and uncertain characteristics. In this paper, incorporation of both PV and wind units in the unit commitment of power system is investigated and a risk-constrained solution to this problem is presented. Considering the contribution of PV and wind units, the aim is to determine the start-up/shut-down status as well as the amount of generating power for all thermal units at minimum operating cost during the scheduling horizon, subject to the system and unit operational constraints. Using the probabilistic method of confidence interval, the uncertainties associated with wind and PV generation are modeled by analyzing the error in the forecasted wind speed and solar irradiation data. Differential evolution algorithm is proposed to solve the two-stage mixed-integer nonlinear optimization problem. Numerical results indicate that with indeterminate information about the wind and PV generation, a reliable day-ahead scheduling of other units is achieved by considering the estimated dependable generation of PV and wind units.
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Zhao, Yao, Ru Qi Cheng, Geng Shen Zhao, and Zhi Hua Zha. "Power Optimal Utilization of DС Bus Micro-Grid System." Advanced Materials Research 430-432 (January 2012): 820–23. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.820.

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Multiple distributed generations construct the micro-grid system through the DC bus, each distributed generation has its own maximum power point, research on the method to improve the overall utilization of the DC bus. Discussed the micro-grid including solar photovoltaic and wind power generations, built the mathematical model of the two generations, used simulation methods to get the power output curve, proposed the improved MPPT method for the DC bus to obtain maximum power. Through micro-grid experimental platform, verify the method is effective to improve the energy utilization efficiency of the DC bus.
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Yadev, Rajkumar, and Mr Mayank Sharma. "Hybrid Power Generation System Using Solar -Wind Energy: A Review." International Journal of Trend in Scientific Research and Development Volume-2, Issue-3 (April 30, 2018): 941–46. http://dx.doi.org/10.31142/ijtsrd11115.

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Izadbakhsh, Maziar, Alireza Rezvani, and Majid Gandomkar. "Improvement of Microgrid Dynamic Performance under Fault Circumstances using ANFIS for Fast Varying Solar Radiation and Fuzzy Logic Controller for Wind System." Archives of Electrical Engineering 63, no. 4 (December 11, 2014): 551–78. http://dx.doi.org/10.2478/aee-2014-0038.

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Abstract The microgrid (MG) technology integrates distributed generations, energy storage elements and loads. In this paper, dynamic performance enhancement of an MG consisting of wind turbine was investigated using permanent magnet synchronous generation (PMSG), photovoltaic (PV), microturbine generation (MTG) systems and flywheel under different circumstances. In order to maximize the output of solar arrays, maximum power point tracking (MPPT) technique was used by an adaptive neuro-fuzzy inference system (ANFIS); also, control of turbine output power in high speed winds was achieved using pitch angle control technic by fuzzy logic. For tracking the maximum point, the proposed ANFIS was trained by the optimum values. The simulation results showed that the ANFIS controller of grid-connected mode could easily meet the load demand with less fluctuation around the maximum power point. Moreover, pitch angle controller, which was based on fuzzy logic with wind speed and active power as the inputs, could have faster responses, thereby leading to flatter power curves, enhancement of the dynamic performance of wind turbine and prevention of both frazzle and mechanical damages to PMSG. The thorough wind power generation system, PV system, MTG, flywheel and power electronic converter interface were proposed by using Mat-lab/Simulink.
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Ajeigbe, Olusayo A., Josiah L. Munda, and Yskandar Hamam. "Optimal Allocation of Renewable Energy Hybrid Distributed Generations for Small-Signal Stability Enhancement." Energies 12, no. 24 (December 14, 2019): 4777. http://dx.doi.org/10.3390/en12244777.

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This paper solves the allocation planning problem of integrating large scale renewable energy hybrid distributed generations and capacitor banks into the distribution systems. Extraordinarily, the integration of renewable energy hybrid distributed generations such as solar photovoltaic, wind, and biomass takes into consideration the impact assessment of variable generations from PV and wind on the distribution networks’ long term dynamic voltage and small-signal stabilities. Unlike other renewable distributed generations, the variability of power from solar PV and wind generations causes small-signal instabilities if they are sub-optimally allocated in the distribution network. Hence, the variables related to small-signal stability are included and constrained in the model, unlike what is obtainable in the current works on the planning of optimal allocation of renewable distributed generations. Thus, the model is motivated to maximize the penetration of renewable powers by minimizing the net present value of total cost, which includes investment, maintenance, energy, and emission costs. Consequently, the optimization problem is formulated as a stochastic mixed integer linear program, which ensures limited convergence to optimality. Numerical results of the proposed model demonstrate a significant reduction in electricity and emission costs, enhancement of system dynamic voltage and small-signal stabilities, as well as improvement in welfare costs and environmental goodness.
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Quoc Dung, Phan, Phan Thi Thanh Binh, Pham Dinh Minh, Tran Minh Hung, and Nguyen Duc Hung. "The optimal generator dispatching with uncertain conditions for grid-connected microgrid." Science & Technology Development Journal - Engineering and Technology 3, no. 1 (April 9, 2020): First. http://dx.doi.org/10.32508/stdjet.v3i1.631.

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Nowadays, the penetration of wind and solar sources is relatively high in Micro Grid. Wind speed and solar radiation forecasting hardly gives an exact value and leads to the values in intervals. Therefore forecasted output powers of these sources are also in the intervals. The constraint on power balance in Micro Grid has the right-hand-side uncertainty, in the interval. So for Micro-Grid in grid connection mode, the presence of the distributed generations based on wind and solar energy sources makes optimal dispatching problems of distributed generations become an uncertainty problem. The optimal solutions for the lower and upper ends of this interval are the best and the worst optimal solution. This paper proposes to treat the above problem as the optimal problem with two objectives: reach the best and the worst solution. The principle of fuzzy set and the Particle Swarm Optimization algorithm will be applied for solving the multi-objective problem. The final optimal value will belong to an interval. Meanwhile, the output power of the swing generator varies to respond to the uncertainty of wind and solar source power. An example of a low-voltage MG with three distributed generators is considered with two cases: connecting to the utility grid via the circuit breaker and via power controller.
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Ghaedi, Amir, and Hamed Gorginpour. "Spinning reserve scheduling in power systems containing wind and solar generations." Electrical Engineering 103, no. 5 (March 5, 2021): 2507–26. http://dx.doi.org/10.1007/s00202-021-01239-z.

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Dissertations / Theses on the topic "Wind and solar generations"

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Watson, Eileen B. "Modeling Electrical Grid Resilience under Hurricane Wind Conditions with Increased Solar Photovoltaic and Wind Turbine Power Generation." Thesis, The George Washington University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10844532.

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The resource mix for the U.S. electrical power grid is undergoing rapid change with increased levels of solar photovoltaic (PV) and wind turbine electricity generating capacity. There are potential negative impacts to grid resilience resulting from hurricane damage to wind and solar power stations connected to the power transmission grid. Renewable power sources are exposed to the environment more so than traditional thermal power sources. To our knowledge, damage to power generating stations is not included in studies on hurricane damage to the electrical power grid in the literature. The lack of a hurricane wind damage prediction model for power stations will cause underestimation of predicted hurricane wind damage to the electrical grid with high percentages of total power generation capacity provided by solar photovoltaic and wind turbine power stations.

Modeling hurricane wind damage to the transmission grid and power stations can predict damage to electrical grid components including power stations, the resultant loss in power generation capacity, and restoration costs for the grid. This Praxis developed models for hurricane exposure, fragility curve-based damage to electrical transmission grid components and power generating stations, and restoration cost to predict resiliency factors including power generation capacity lost and the restoration cost for electrical transmission grid and power generation system damages. Synthetic grid data were used to model the Energy Reliability Council of Texas (ERCOT) electrical grid. A case study was developed based on Hurricane Harvey. This work is extended to evaluate the changes to resiliency as the percentage of renewable sources is increased from 2017 levels to levels corresponding to the National Renewable Energy Lab (NREL) Futures Study 2050 Texas scenarios for 50% and 80% renewable energy.

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Udayakanthi, Geetha. "Design of a Wind-Solar Hybrid Power Generation System in Sri Lanka." Thesis, KTH, Kraft- och värmeteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-179398.

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Energy is critical to the economic growth and social development of any country. Indigenous energy resources need to be developed to the optimum level to minimize dependence on imported fuels, subject to resolving economic, environmental and social constraints. This led to a boost in research and development as well as investment in renewable energy industry in search of ways to meet energy demand and to reduce dependency on fossil fuels. Wind and solar energy are becoming popular owing to abundance, availability and ease of harnessing for electrical power generation. This thesis focuses on an integrated hybrid renewable energy system consisting of wind and solar energy. Sri Lanka, a small island located south of the Indian subcontinent, has been blessed with renewable energy sources. According to the national energy policy a 10% share is targeted from NCRE (Non-Conventional Renewable Energy) sources by 2015 and 20% by 2020 out of total electricity generation in Sri Lanka. This thesis provides an insight into the energy scenario and present situation of renewable energy development in Sri Lanka. According to wind and solar potential maps of Sri Lanka which were developed by NREL in 2003, many parts of the country have potential to developed economic power generation. Through these maps locations were identified where both wind and solar potential is high. A detailed study was carried out in these locations with real time field data. The focal point of this thesis is to propose and evaluate a wind-solar hybrid power generation system for a selected location. Grid tied power generation systems make use of solar PV or wind turbines to produce electricity and supply the load by connecting to grid. In this study, HOMER (Hybrid Optimization Model for Electric Renewables) computer modeling software was used to model the power system, its physical behavior and its life cycle cost. The hybrid power system was designed for Hambantota District in Southern Sri Lanka. Through the simulation process, installation of 8 numbers of 850kW wind turbines and 1MW solar PV modules were identified as most economical to supply average of 3MW load connected to grid where the simple payback period of the system was 3.4 years.
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Luta, Doudou Nanitamo. "Modelling of hybrid solar wind integrated generation systems in an electrical distribution network." Thesis, Cape Peninsula University of Technology, 2014. http://hdl.handle.net/20.500.11838/1177.

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Thesis submitted in fulfilment of the requirements for the degree Master of Technology: Electrical Engineering in the Faculty of Engineering at the Cape Peninsula University of Technology 2014
The research in this thesis deals with the application of Model Based Systems Engineering (MBSE) practices in the modelling of power systems. More particularly, we have presented the modelling hybrid photovoltaic wind integrated in an electrical distribution network using SysML (System Modelling Language) which is a modelling language in support of MBSE. MBSE refers to a formalised practice of systems development through the application of modelling principles, methods, languages and tools to the entire lifecycle of a system. Generally speaking, the modelling of power systems is performed using software such as Matlab Simulink, DigSilent, PowerWorld etc. These software programs allow modelling of a system considering only a specific viewpoint, depending on the objective that is to be assessed. The advantage of the SysML over the above mentioned modelling languages lies from the fact that SysML includes different viewpoints of a system. These views are known as the Four Pillars of SysML. Pillar One refers to the requirements of a system and includes all the functional and non-functional requirements. Pillar Two deals with the structure representation of a system by considering all its subsystems and their different connections. Pillar Three considers the behaviour of a system and includes its activities, sequences and different states. The last Pillar includes the detailed characteristics, physical laws and constraints on the system. The main objectives of this research are the development of models which will include: the system’s requirements; the system’s structure representation in term of different entities involved and the relationship between them; the system’s behaviours in terms of activities in different cases considered and transitions from one state to another as well as the interaction between the system and all the stakeholders. Keywords: Model Based Systems Engineering (MBSE), System Modelling Language (SysML), Renewable Energy systems, Hybrid power systems, photovoltaic systems, wind power systems.
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Mauger, Léo. "Generation of wind speed and solar irradiance time series for power plants with storage." Thesis, KTH, Energiteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-181923.

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Sizing renewable energy power plants with storage devices needs new resource assessment. Global amount of energy available has to be replaced by time series to depict the resource as a function of time. This paper introduces methodology to generate time series for wind speed and solar irradiance with a granularity between 10minutes and 1seconde. Ground measurements and macro-date from satellite imagery are analyzed and processed to obtain long-term site-specific time series. Because renewable energy forecasting is a growing concern, a second part of the work presents how to modify previously generated profiles in order to obtain forecasts with an expected error.
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Schooley, David C. "Unit commitment and system reliability in electric utility systems with independent wind and solar generation." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/12917.

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Cohen, Matthew. "Avoided Water Cost of Electricity Generation for Solar PV and Wind Technologies in Southern California." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1301.

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The objective of this thesis is to provide a foundation for evaluating the water costs associated with electricity production to calculate the avoided water cost of energy for solar PV and wind technologies relative to coal, natural gas, nuclear, geothermal, concentrated solar thermal, and biomass. Water consumption is estimated for energy production (fuel extraction and preparation) and electricity generation (power plant operation) using the best available information from published articles. The quantity of water consumed for electricity production is monetized for a Southern California case study based on the water rates of Metropolitan Water District of Southern California (MET), which is the largest wholesale supplier of surface water in the United States. Water withdrawals are addressed but not included in the monetization of water consumption. Case studies of specific power plant’s water costs are used for comparison and demonstrate variation in water costs due to variations in water consumption. Water costs are estimated in terms of water cost ($) per unit energy generated (MWh). Since solar PV and wind energy are shown to have negligible water consumption relative to the other technologies, the water costs for each of the other electrical generation methods are equivalent to the water savings potential of solar PV and wind generated electricity. Compared to other evaluated electricity sources that could provide electricity to Southern California, solar PV and wind energy can save water worth $0.76/MWh for natural gas combined-cycle plants, $0.94/MWh for geothermal power plants, $1.01/MWh for biomass power plants, between $1.14 and $1.82 per MWh for concentrated solar thermal plants, $1.43/MWh for nuclear power plants, and $1.49/MWh for coal power plants. Results indicate that there are three processes that use substantial amounts of water: fuel extraction (for coal, natural gas, and nuclear), thermoelectric cooling of power plants and emissions controls such as carbon capture and sequestration. Carbon capture and sequestration are estimated to almost double the water consumption costs of coal and natural gas power plants. Of the evaluated technologies, only solar PV and wind do not require any of those three steps. Solar PV and wind energy can thus save the greatest value of water when displacing power plants that utilize (or may someday be required to utilize) all three of the major culprits of water consumption. Even the use of one of these processes (particularly thermoelectric cooling) results in substantial water consumption. Total water costs for each technology were normalized to the total expected electrical output of a typical capacity natural gas combined-cycle power plant to demonstrate the economies of scale of power production. Over a forty year lifespan of a typical natural gas power plant, total water consumption would result in $67 million worth of water (southern CA wholesale prices). To generate the same amount of electricity the total value of water consumption is estimated to be $83 million for geothermal plants, $89 million for biomass plants, $100 million to $160 million for concentrated solar thermal plants, $126 million for nuclear plants, and $131 million for coal power plants. The use of carbon capture and sequestration is expected to nearly double these total water costs. Compliance with environmental regulations can cause expenses much greater than water consumption. For example, mitigation costs for impingement and entrainment (a consequence of cooling water withdrawals) as well as the cost to convert to closed-loop cooling for environmental compliance can be considered costs associated with water usage. This is demonstrated by a case study about the Los Angeles Department of Water and Power regarding the elimination of once through cooling. The conversion to closed-loop cooling for the Haynes natural gas power plant is expected to cost $782 million, resulting in an estimated unit cost of $10.66/MWh. Finally, the economic benefits of the California Renewables Portfolio Standard are calculated with respect to water consumption. By holding hydroelectricity, geothermal, biomass and CST production constant and utilizing solar PV and wind to meet the 33% renewables target by 2020, a water value of $28.5 million/year can be conserved relative to meeting rising electricity demand with only natural gas combined-cycle generation. MET water rates increased 70% from 2008 to 2014. If water rates increase at the same rate over the next six years, the water savings of the Renewable Portfolio Standard would be 70% higher in 2020 dollars, equating to water savings of $48.4 million per year.
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Verma, Suruchi. "Comparative Analysis of Wind, Solar and Landfill Gases as Alternative Sources of Energy for Electricity Generation." ScholarWorks@UNO, 2010. http://scholarworks.uno.edu/td/1262.

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The document reviews the current and projected electricity demand until the year 2030 along with the fuel mix. Several projections based on different agencies were studied in order to understand the trend of fuel mix projected to be used. Clearly, the fuel mix being used or projected is unsustainable. Depletion of fossil fuels, increasing demand and environmental impacts are some of the factors that emphasize the use of Alternative Sources of Electricity. Three of the upcoming Alternative Sources - Solar, Wind and Landfill Gases - are discussed and compared in the document. Based on the comparison, Landfill Gas projects seem to be very favorable, despite the higher costs related with such projects, several advantages over the other two Alternative Sources are discussed in the document. The several advantages of Landfill Gas projects, such as emissions reduction, better power quality, reduction in transmission losses, and several others are discussed in the document
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Ershad, Ahmad Murtaza. "Potential of Solar Photovoltaic and Wind Power Plants in Meeting Electricity Demand in Afghanistan." University of Dayton / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1398944251.

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Pina, Aline Petean [UNESP]. "Singular value analyses of voltage stability on power system considering wind generation variability." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/123670.

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Made available in DSpace on 2015-06-17T19:33:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-12-05. Added 1 bitstream(s) on 2015-06-18T12:48:21Z : No. of bitstreams: 1 000829840.pdf: 752028 bytes, checksum: 705e35361954fbc4b3820623ecfcc0a8 (MD5)
Os sistemas de transmissão em todo o mundo, que foram projetados e construídos para operar, predominantemente, com geração síncrona convencional, como a geração hídrica. Entretanto, agora se faz necessária a integração de energia renovável, tais como a energia eólica e energia solar. Estes geradores de energias renováveis estão localizados em locais ricos em recursos, causando uma injeções de potência em sistemas de transmissão, submetendo-os a indevidos esforços e obrigando-os a operar em novos pontos de operação. Em muitos sistemas de transmissão, a capacidade de integração se aproximou do limite, sendo necessárias atualizações para acomodar uma maior penetração de geração eólica. Os exemplos podem ser vistas na Alemanha, Ontario (Canadá) e Texas. Nestas situações, onde as capacidades do sistema de transmissão estão próximas do limite de operação, é importante para avaliar a estabilidade de tensão, considerando (a) a geração eólica e (b) possível efeito da incerteza na previsão. Neste trabalho, é proposta uma abordagem sistemática para estabilidade de tensão. Com a utilização de um algoritmo de fluxo de potência ótimo e da construção da matriz hessiana, será determinada a relação entre as mudanças nos valores mínimos singulares do sistema Jacobiano e as mudanças na injeção de potência no barramento em tempo real. Esta relação é usada para examinar o efeito da incerteza da previsão de energia eólica na estabilidade de tensão. O método proposto é usado para estudar os efeitos da incerteza sobre a estabilidade de tensão dos sistemas 6-barras, 57-barras e 118-barras do IEEE; do Sistema Sul Brasileiro reduzido e também foi usado um sistema real 600 barras. Os resultados são detalhados nesta tese
Transmission Systems worldwide, that were designed and built to operate with predominantly conventional synchronous generation, are advancing to integrate large amounts of renewable energy generators. These renewable generators are sited at resource-rich locations, causing a geographical shift in power injections into transmission systems, subjecting them to undue stress and making them operate in new states. In many transmission systems, capacities to integrate wind resource are exhausted or are being upgraded to accommodate higher wind generation penetration. Examples may be seen in Germany, Ontario (Canada) and Texas. In these situations, where transmission system capacities have been reached, it is important to assess voltage stability by considering (a) wind generation and (b) possible effect of uncertainty in forecast. In this work, a systematic approach of studying voltage stability is proposed. Using an optimal power flow algorithm, the Hessianmatrix of power balance equations is determined that relates changes in minimum singular values of system Jacobian to changes in bus-wise real power injections. This relationship is used to examine effect of uncertainty of wind power forecast on voltage stability. The proposed method is used to study the effects of uncertainty on system voltage stability of 6-bus, 57-bus and 118-bus IEEE and 45-bus South Brazilian test systems, for the real analyses is used 600-bus and results are reported. Considering the simplification of computation, the proposed method has a clear advantage compared to the conventional Jacobian technique using repeated OPF solutions
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Pina, Aline Petean. "Singular value analyses of voltage stability on power system considering wind generation variability /." Ilha Solteira, 2015. http://hdl.handle.net/11449/123670.

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Orientador: Percival Bueno de Araujo
Co-orientador: Bala Venkatesh
Banca: Dilson Amancio Alves
Banca: Fábio Bertequini Leão
Banca: Gideon Villar Leandro
Banca: Marcos Amorielle Furini
Resumo: Os sistemas de transmissão em todo o mundo, que foram projetados e construídos para operar, predominantemente, com geração síncrona convencional, como a geração hídrica. Entretanto, agora se faz necessária a integração de energia renovável, tais como a energia eólica e energia solar. Estes geradores de energias renováveis estão localizados em locais ricos em recursos, causando uma injeções de potência em sistemas de transmissão, submetendo-os a indevidos esforços e obrigando-os a operar em novos pontos de operação. Em muitos sistemas de transmissão, a capacidade de integração se aproximou do limite, sendo necessárias atualizações para acomodar uma maior penetração de geração eólica. Os exemplos podem ser vistas na Alemanha, Ontario (Canadá) e Texas. Nestas situações, onde as capacidades do sistema de transmissão estão próximas do limite de operação, é importante para avaliar a estabilidade de tensão, considerando (a) a geração eólica e (b) possível efeito da incerteza na previsão. Neste trabalho, é proposta uma abordagem sistemática para estabilidade de tensão. Com a utilização de um algoritmo de fluxo de potência ótimo e da construção da matriz hessiana, será determinada a relação entre as mudanças nos valores mínimos singulares do sistema Jacobiano e as mudanças na injeção de potência no barramento em tempo real. Esta relação é usada para examinar o efeito da incerteza da previsão de energia eólica na estabilidade de tensão. O método proposto é usado para estudar os efeitos da incerteza sobre a estabilidade de tensão dos sistemas 6-barras, 57-barras e 118-barras do IEEE; do Sistema Sul Brasileiro reduzido e também foi usado um sistema real 600 barras. Os resultados são detalhados nesta tese
Abstract: Transmission Systems worldwide, that were designed and built to operate with predominantly conventional synchronous generation, are advancing to integrate large amounts of renewable energy generators. These renewable generators are sited at resource-rich locations, causing a geographical shift in power injections into transmission systems, subjecting them to undue stress and making them operate in new states. In many transmission systems, capacities to integrate wind resource are exhausted or are being upgraded to accommodate higher wind generation penetration. Examples may be seen in Germany, Ontario (Canada) and Texas. In these situations, where transmission system capacities have been reached, it is important to assess voltage stability by considering (a) wind generation and (b) possible effect of uncertainty in forecast. In this work, a systematic approach of studying voltage stability is proposed. Using an optimal power flow algorithm, the Hessianmatrix of power balance equations is determined that relates changes in minimum singular values of system Jacobian to changes in bus-wise real power injections. This relationship is used to examine effect of uncertainty of wind power forecast on voltage stability. The proposed method is used to study the effects of uncertainty on system voltage stability of 6-bus, 57-bus and 118-bus IEEE and 45-bus South Brazilian test systems, for the real analyses is used 600-bus and results are reported. Considering the simplification of computation, the proposed method has a clear advantage compared to the conventional Jacobian technique using repeated OPF solutions
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Books on the topic "Wind and solar generations"

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(Firm), GE Energy. Western Wind and Solar Integration Study. Golden, Colo: National Renewable Energy Laboratory, 2010.

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National Renewable Energy Laboratory (U.S.), ed. The Western Wind and Solar Integration Study Phase 2. [Golden, Colo.]: National Renewable Energy Laboratory, 2013.

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National Renewable Energy Laboratory (U.S.), ed. The Western Wind and Solar Integration Study Phase 2. [Golden, Colo.]: National Renewable Energy Laboratory, 2013.

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author, Brinkman Greg, and National Renewable Energy Laboratory (U.S.), eds. The Western Wind and Solar Integration Study Phase 2: Executive summary. [Golden, Colo.]: National Renewable Energy Laboratory, 2013.

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Gevorgian, V. Review of PREPA technical requirements for interconnecting wind and solar generation. Golden, CO: National Renewable Energy Laboratory, 2013.

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Masiello, Ralph. Research evaluation of wind generation, solar generation, and storage impact on the California grid: PIER final project report. Sacramento, Calif.]: California Energy Commission, 2010.

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United States. National Aeronautics and Space Administration., ed. On the physics of waves in the solar atmosphere: Wave heating and wind acceleration. [Washington, DC: National Aeronautics and Space Administration, 1994.

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Musielak, Z. E. On the physics of waves in the solar atmosphere: Wave heating and wind acceleration. [Washington, DC: National Aeronautics and Space Administration, 1994.

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Musielak, Z. E. On the physics of waves in the solar atmosphere: Wave heating and wind acceleration : final report. [Huntsville, Ala.]: Dept. of Mechanical and Aerospace Engineering and Center for Space Plasma and Aeronomic Research, University of Alabama in Hunstville [sic], 1994.

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United States. National Aeronautics and Space Administration., ed. On the physics of waves in the solar atmosphere: Wave heating and wind acceleration : final report. [Huntsville, Ala.]: Dept. of Mechanical and Aerospace Engineering and Center for Space Plasma and Aeronomic Research, University of Alabama in Hunstville [sic], 1994.

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Book chapters on the topic "Wind and solar generations"

1

Noci, Giancarlo, John L. Kohl, and George L. Withbroe. "OVI Diagnostics of Solar Wind Generation." In Astrophysics and Space Science Library, 53–58. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4612-5_6.

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Surati, Hinal. "Modeling of Power Management Strategy Using Hybrid Energy Generating Sources." In Wind and Solar Energy Applications, 137–50. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003321897-11.

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Velli, Marco, and Paulett Liewer. "Alfvén Wave Generation in Photospheric Vortex Filaments, Macrospicules, and “Solar Tornadoes”." In Coronal Holes and Solar Wind Acceleration, 339–43. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-015-9167-6_59.

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Tanasescu, F. T., C. I. Popescu, G. Galatchi, and L. Olar. "Hydrogen Generation with Hybrid Solar-Wind Electric Power Supply." In Seventh E.C. Photovoltaic Solar Energy Conference, 1232–36. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3817-5_225.

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Gao, Xin. "Control Strategy for Wind and Solar Hybrid Generation System." In Communications in Computer and Information Science, 391–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23998-4_54.

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Mondal, Sujoy, Ashoke Mondal, and Shilpi Bhattacharya. "Smart Data Logger for Solar and Wind Power Generation." In Lecture Notes in Electrical Engineering, 577–85. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5546-6_49.

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Krishna, K. R. "Wind and Solar Power Generation in the Agrarian Sky." In The Agricultural Sky, 361–89. New York: Apple Academic Press, 2023. http://dx.doi.org/10.1201/9781003328247-5.

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Rodrigues, Neshwin, Raghav Pachouri, Shubham Thakare, G. Renjith, and Thomas Spencer. "Integrating Wind and Solar in the Indian Power System." In Energiepolitik und Klimaschutz. Energy Policy and Climate Protection, 139–62. Wiesbaden: Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-38215-5_7.

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AbstractIndia’s coal contribution to the total electricity generation mix stood at 73% in 2018. To meet India’s NDC ambitions, the federal government announced determined targets to integrate 450 GW Renewable Energy in the grid by 2030. This paper explores the pathways to integrate high RE generation by 2030 with effective balancing of supply and demand and associated challenges of flexibility requirements. A Unit commitment and economic dispatch model, which simulates the power system operation was used. The overall share of variable renewables reaches 26% and 32% in the Baseline Capacity Scenario (BCS) and High Renewable Energy Scenario (HRES) respectively. Improved ramp rates and a minimum thermal loading limit induce flexibility in the thermal fleet. In the HRES, more than 16 GW of coal plants are required for two-shift operations in April and more than 50% of days see an aggregate all-India ramp from the coal fleet in excess of 500 MW per minute. Battery Storage provides daily balancing while reducing VRE curtailment to less than 0.2% in the HRES. Nationally Coordinated dispatch shows increased power transfer from high VRE regions to export power during high VRE generation periods. It is thus found that high RE penetration is possible by 2030 at no extra system costs.
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Alves, L. R., V. M. Souza, P. R. Jauer, L. A. da Silva, C. Medeiros, C. R. Braga, M. V. Alves, et al. "The Role of Solar Wind Structures in the Generation of ULF Waves in the Inner Magnetosphere." In Earth-affecting Solar Transients, 653–67. Dordrecht: Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-1570-4_31.

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Lysak, Robert L., Yan Song, and Dong-Hun Lee. "Generation of ULF Waves by Fluctuations in the Magnetopause Position." In Solar Wind Sources of Magnetospheric Ultra-Low-Frequency Waves, 273–81. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm081p0273.

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Conference papers on the topic "Wind and solar generations"

1

Isenberg, Philip A. "Ion-Cyclotron Generation of the Fast Solar Wind: The Kinetic Shell Model." In SOLAR WIND TEN: Proceedings of the Tenth International Solar Wind Conference. AIP, 2003. http://dx.doi.org/10.1063/1.1618592.

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Macek, Wieslaw M. "Mechanism for generation of 2–3 kHz radiation beyond the termination shock." In Proceedings of the eigth international solar wind conference: Solar wind eight. AIP, 1996. http://dx.doi.org/10.1063/1.51446.

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de la Torre, Alejandro, and Pedro Alexander. "The energy associated with MHD wave generation in the solar wind plasma." In Proceedings of the eigth international solar wind conference: Solar wind eight. AIP, 1996. http://dx.doi.org/10.1063/1.51487.

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Bastian, T. S. "A view from the ground: Next generation instrumentation for solar and heliospheric physics." In SOLAR WIND 13: Proceedings of the Thirteenth International Solar Wind Conference. AIP, 2013. http://dx.doi.org/10.1063/1.4811080.

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Isenberg, Philip A. "Effects of spatial transport and ambient wave intensity on the generation of MHD waves by interstellar pickup protons." In Proceedings of the eigth international solar wind conference: Solar wind eight. AIP, 1996. http://dx.doi.org/10.1063/1.51448.

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Ruzmaikin, Alexander, and Mitchell A. Berger. "On generation of high-frequency Alfvén waves in the solar corona." In The solar wind nine conference. AIP, 1999. http://dx.doi.org/10.1063/1.58766.

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Parhi, S., S. T. Suess, and M. Sulkanen. "The generation of smooth high speed solar wind from plume-interplume mixing." In The solar wind nine conference. AIP, 1999. http://dx.doi.org/10.1063/1.58670.

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Zaslavsky, A., A. S. Volokitin, V. V. Krasnoselskikh, M. Maksimovic, S. D. Bale, M. Maksimovic, K. Issautier, N. Meyer-Vernet, M. Moncuquet, and F. Pantellini. "Langmuir wave-packet generation from an electron beam propagating in the inhomogeneous solar wind." In TWELFTH INTERNATIONAL SOLAR WIND CONFERENCE. AIP, 2010. http://dx.doi.org/10.1063/1.3395860.

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Bienvenu, F., and J. Callec. "High temporal resolution load and renewables time series generation for prospective frequency studies." In 21st Wind & Solar Integration Workshop (WIW 2022). Institution of Engineering and Technology, 2022. http://dx.doi.org/10.1049/icp.2022.2773.

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Fujimoto, Y., T. Kato, D. Nohara, Y. Kanno, M. Ohba, and Y. Hayashi. "Density integration approach for probabilistic prediction of wind power generation based on ensemble weather forecast." In 21st Wind & Solar Integration Workshop (WIW 2022). Institution of Engineering and Technology, 2022. http://dx.doi.org/10.1049/icp.2022.2839.

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Reports on the topic "Wind and solar generations"

1

Wiese, Steven M. Assessment of Wind/Solar Co-located Generation in Texas. Office of Scientific and Technical Information (OSTI), July 2009. http://dx.doi.org/10.2172/1048116.

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Schmalensee, Richard. The Performance of U.S. Wind and Solar Generating Units. Cambridge, MA: National Bureau of Economic Research, October 2013. http://dx.doi.org/10.3386/w19509.

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Linker, Jon A. A Next-Generation Model of the Corona and Solar Wind. Fort Belvoir, VA: Defense Technical Information Center, March 2011. http://dx.doi.org/10.21236/ada563658.

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Gevorgian, Vahan, and Sarah Booth. Review of PREPA Technical Requirements for Interconnecting Wind and Solar Generation. Office of Scientific and Technical Information (OSTI), November 2013. http://dx.doi.org/10.2172/1260328.

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Marcos Morezuelas, Paloma. Gender and Renewable Energy: Wind, Solar, Geothermal and Hydroelectric Energy. Inter-American Development Bank, November 2014. http://dx.doi.org/10.18235/0003068.

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This document focuses on how to incorporate a gender perspective in operations that support the construction, operation and maintenance of medium- and large-scale renewable wind, solar, geothermal and hydroelectric energy installations connected to the grid for purposes of power generation. Additionally, there is also a section on rural energy that is applicable to small installations and mini-grids, or to exceptional cases where medium- and large-scale facilities provide electricity to a community. The document (i) identifies the possible gender equality challenges and opportunities as part of the project assessment, (ii) highlights the risks and potentially negative impacts of the project on gender equality, (iii) offers recommendations for addressing, preventing and mitigating challenges and for maximizing opportunities; and (iv) presents examples of programs that have taken into account gender differences or risks. In addition, the document includes (v) key questions for analyzing gender issues in renewable energy projects, and (vi) examples of indicators for the monitoring and evaluation of operations in the renewable energy sector.
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Miller, Nicholas W., Bruno Leonardi, Robert D'Aquila, and Kara Clark. Western Wind and Solar Integration Study Phase 3A: Low Levels of Synchronous Generation. Office of Scientific and Technical Information (OSTI), November 2015. http://dx.doi.org/10.2172/1227265.

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Chernyakhovskiy, Ilya, Samuel Koebrich, Vahan Gevorgian, and Jaquelin M. Cochran. Grid-Friendly Renewable Energy: Solar and Wind Participation in Automatic Generation Control Systems. Office of Scientific and Technical Information (OSTI), July 2019. http://dx.doi.org/10.2172/1543130.

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Wolak, Frank. Level versus Variability Trade-offs in Wind and Solar Generation Investments: The Case of California. Cambridge, MA: National Bureau of Economic Research, August 2016. http://dx.doi.org/10.3386/w22494.

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Jenkin, T., V. Diakov, E. Drury, B. Bush, P. Denholm, J. Milford, D. Arent, R. Margolis, and R. Byrne. Use of Solar and Wind as a Physical Hedge against Price Variability within a Generation Portfolio. Office of Scientific and Technical Information (OSTI), August 2013. http://dx.doi.org/10.2172/1090959.

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Ayele, Seife, and Vianney Mutyaba. Chinese-Funded Electricity Generation in Sub-Saharan Africa and Implications for Public Debt and Transition to Renewable Energy. Institute of Development Studies (IDS), November 2021. http://dx.doi.org/10.19088/ids.2021.063.

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While China has been increasingly contributing to the recent growth in electricity generation in sub-Saharan Africa (SSA), the effects of China-funded investment on host countries’ debt burden and transition to renewable energy sources have not been sufficiently explored. Drawing on secondary data, combined with deep dive studies of Ethiopia and Uganda, this paper shows that despite significant liberalisation of the power sector in SSA, Chinese investments in the electricity industry continue to follow state-led project contract-based models. We show that this approach has failed to encourage Chinese firms to build compelling investment portfolios for competitive procurements within the region and, instead and inadvertently, it has exacerbated the debt burden of host country governments. Second, in spite of the global drive towards climate resilient energy generation, Chinese funding of electricity generation in SSA is not sufficiently channelled towards modern renewable energy sources such as wind and solar power that could reduce vulnerability to climate change. While recognising that the private sector-led competitive model of power generation is not without limitations, we argue that SSA’s electricity generation strategy that leads to less public debt and more climate resilience involves increased involvement of Chinese investment in the competitive model, with more diversification of such investment portfolios towards modern renewables such as wind and solar energy resources.
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