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Dissertations / Theses on the topic 'PV-flow'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

López, Claudio David. "Shortening time-series power flow simulations for cost-benefit analysis of LV network operation with PV feed-in." Thesis, Uppsala universitet, Elektricitetslära, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-242099.

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Time-series power flow simulations are consecutive power flow calculations on each time step of a set of load and generation profiles that represent the time horizon under which a network needs to be analyzed. These simulations are one of the fundamental tools to carry out cost-benefit analyses of grid planing and operation strategies in the presence of distributed energy resources, unfortunately, their execution time is quite substantial. In the specific case of cost-benefit analyses the execution time of time-series power flow simulations can easily become excessive, as typical time horizons

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2

Ainah, Priye. "Coordinated active power reduction strategy for voltage rise mitigation in LV distribution network." Thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/28351.

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Integration of renewable energy systems by the utility, customers, and the third party into the electric power system, most especially in the MV and LV distribution networks grew over the last decade due to the liberalization of the electricity market, rising energy demand, and increasing environmental concern. The distributed rooftop PV system contributes to relieve the overall load, reduce losses, avoid conventional generation upgrade, and better matching of demand on the LV distribution network. Originally, the LV distribution network is designed for unidirectional current flow, that is fro

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3

Ghosh, Nilanshu. "Techno-economic analysis of retrofitting existing fuel stations with DC fast chargers along with solar PV and energy storage with load flow analysis." Thesis, KTH, Energiteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-284460.

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The increasing number of electric vehicles (EVs) in the transport sector has rendered the conventional fuel-based vehicles obsolete along with the fuel filling stations. With the growth in EVs, there has been an increase in the public charging infrastructure with fast charging equipment being used to charge the EVs in least possible time and also address the issue of ‘range anxiety’ among the EV owners. Many countries like South Korea and Germany has seen policies being implemented to install fast chargers for EVs in existing fuel filling stations. This study aims conduct a techno-economic fea

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4

Santos, Arthur Rocha Damaso dos. "Uma proposta de representação de barras PV para o fluxo de potência via equações de injeção de corrente expressas em coordenadas retangulares /." Ilha Solteira, 2019. http://hdl.handle.net/11449/181455.

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Orientador: Dilson Amancio Alves<br>Resumo: Neste trabalho, apresenta-se os resultados da análise comparativa da influência de formas alternativas de representação das barras PV nas características de convergência do método de Newton-Raphson considerando equações de injeção de corrente. O método proposto para a solução do problema de fluxo de potência é baseado em equações de injeção de corrente expressas em coordenadas retangulares. São apresentados também os resultados da comparação com outros métodos baseados em equações de injeção de potência expressas em coordenadas polares e retangulares

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5

Elrayyah, Ali Y. "Modeling and Control of Microgrid-Connected Photo-Voltaic Sources (MCPV)." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1384345552.

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6

Östlund, Jacob, and Kristian Kierkegaard. "Uranium Mining Industry : -A valuation of uranium mining companies." Thesis, Jönköping University, JIBS, Accounting and Finance, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-927.

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<p>Background:</p><p>Over the last three years uranium prices have soard from US $14 per pound (lb) to the current price of US $120/lb and this rapid incline of the commodity have created a boom within the uranium prospecting and min-ing industry. There are currently 435 nuclear reactors all over the world and these reactors demand 180 millions of pounds of uranium each year to run at full production. Currently the uranium mining industry only sup-plies 110 million pounds of the demanded quantity. The remaining 70 mil-lion pounds are coming from secondary sources such as decommissioned nuclear

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7

Gutierrez, Lagos Luis Daniel. "Advanced voltage control for energy conservation in distribution networks." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/advanced-voltage-control-for-energy-conservation-in-distribution-networks(2718dcf1-f5db-45df-84e2-4890956ba8b1).html.

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The increasing awareness on the effect of carbon emissions in our planet has led to several countries to adopt targets for their reduction. One way of contributing to this aim is to use and distribute electricity more efficiently. In this context, Conservation Voltage Reduction (CVR), a well-known technique that takes advantage of the positive correlation between voltage and demand to reduce energy consumption, is gaining renewed interest. This technique saves energy by only reducing customer voltages, without relying on customer actions and, therefore, can be controlled by the Distribution Ne

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8

Kokkalis, Efstratios. "Fluid dynamic assessments of spiral flow induced by vascular grafts." Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/5b96492f-983f-4baa-8e48-20da6939e65c.

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Peripheral vascular grafts are used for the treatment of peripheral arterial disease and arteriovenous grafts for vascular access in end stage renal disease. The development of neo-intimal hyperplasia and thrombosis in the distal anastomosis remains the main reason for occlusion in that region. The local haemodynamics produced by a graft in the host vessel is believed to significantly affect endothelial function. Single spiral flow is a normal feature in medium and large sized vessels and it is induced by the anatomical structure and physiological function of the cardiovascular system. Grafts

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9

Walla, Tobias. "Hosting capacity for photovoltaics in Swedish distribution grids." Thesis, Uppsala universitet, Fasta tillståndets fysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-207871.

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For planning issues, it is useful to know the upper limit for photovoltaics (PV) in the electrical grid with current design and operation (defined as hosting capacity) and how this limit can be increased. Future costs for grid reinforcement can be avoided if measures are taken to implement smart grid technology in the distribution grid. The aim of this project is to identify challenges in Swedish electricity distribution grids with a high penetration of local generation of electricity from PV. The aim is also to help Swedish Distribution System Operators (DSOs) to better understand hosting cap

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10

Garbelini, Enio [UNESP]. "Proposição de uma técnica de parametrização geométrica para o fluxo de carga continuado." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/100326.

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Made available in DSpace on 2014-06-11T19:30:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-11-06Bitstream added on 2014-06-13T19:00:48Z : No. of bitstreams: 1 garbelini_e_dr_ilha.pdf: 758680 bytes, checksum: 9f08146d542679d2c1da479912ffd576 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O fluxo de carga convencional é considerado inadequado para a obtenção do ponto de máximo carregamento devido a singularidade da matriz Jacobiana. Os métodos da continuação são ferramentas eficientes para a solução deste tipo de problema, e diferentes parametrizaçõ

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11

Morais, Pedro Felizardo. "Equity research - EDP Renováveis, S.A." Master's thesis, Instituto Superior de Economia e Gestão, 2018. http://hdl.handle.net/10400.5/16363.

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Mestrado em Finanças<br>Desenvolvemos uma análise detalhada à informação histórica da empresa, tendências da indústria, fatores macroeconómicos, bem como à gestão da empresa para determinar os pressupostos considerados no modelo financeiro. Para obter o preço alvo, usámos o método dos Fluxos de Caixa Descontados (CFD), sendo o método que consideramos como sendo o mais adequado para a avaliação da EDP Renováveis. Adicionalmente, usámos métodos complementares para suportar a nossa recomendação e variáveis com os maiores níveis de incerteza foram testadas para analisar o seu impacto no preço alvo

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12

Brito, Cláudio Alves. "Otimização do Fluxo de Potência em Redes de BT com Sistemas PV e Armazenamento." Master's thesis, Instituto Politécnico de Setúbal.Escola Superior de Tecnologia de Setúbal, 2016. http://hdl.handle.net/10400.26/17978.

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Dissertação submetida como requisito parcial para obtenção do grau de Mestre em Engenharia Eletrotécnica e de Computadores – perfil de Energias Renováveis e Sistemas de Potência<br>O número de sistemas fotovoltaicos nas redes de baixa tensão tem vindo a aumentar nos últimos anos. Para além de produzir energia de uma forma limpa, é uma tecnologia que requer pouca manutenção e que é muito útil nos locais mais remotos e de difícil acesso. No entanto, o crescimento do número destes sistemas traz problemas ao nível da rede nomeadamente aumentos de tensão acima do limite definido e trânsito de potên

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13

Badawy, Mohamed O. "Grid Tied PV/Battery System Architecture and Power Management for Fast Electric Vehicles Charging." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1468858915.

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14

Huang, Yen-Po, and 黃彥博. "THE STUDY OF THE PV PRODUCT DESIGN FLOW BASED ON THE GREEN ENVIRONMENTAL PROTECTION NORM." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/80158057065920139889.

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碩士<br>大同大學<br>機械工程學系(所)<br>96<br>In recent years, since the environment and climate change dramatically, different countries gradually pay attention to the environmental issues. Two Environmental Directives announced by the European Union (EU) in 2003 were the most well-known and they significantly influenced the industries of electronics and electric engineering. They were “RoHS” and “WEEE”. RoHS, established by EU, sets the standard for 6 hazardous substances (lead, cadmium, mercury, Cr6+, PBB and PBDE) in products. WEEE provides guidelines on increasing the recycling ratio from the wastes.

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15

Yeh, Chia-fang, and 葉佳芳. "A Study of the Free Cash Flow Structure of IC, LCD, LED and PV Industries." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/61658520742647774330.

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碩士<br>國立中山大學<br>財務管理學系研究所<br>102<br>Most Taiwanese high-tech industries have characteristics of high capital expenditure. While technology advances further and the process gradually updates, the life-cycles of production lines are getting shorter so companies spent a lot of money on rebuilding and expanding but they haven’t raised profits. Therefore, this study has involved tracking the industries of high capital expenditure and watched to see what business efficiencies and performance could be improved by expanding the product lines. The purpose of this study is based on Free Cash Flow (FCF)

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16

Su, Chun-Ta, and 蘇俊達. "Using R&D Portfolio and Knowledge Flow to Explore the Investment Mode: Evidence from Emerging PV and Concentrator Photovoltaic." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/78bsv9.

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碩士<br>國立雲林科技大學<br>企業管理系<br>104<br>Nowadays, there is energy depletion on earth; solar cell is an important alternative energy. Emerging PV and Concentrator PV growth rapidly, the prospects of these two technologies are great, and the potential of market demand attract a lot of capital investing. Solar industry is a technology-intensive industry, so how to evaluate the technology will affect manufacturers or investors to make decision for investing or R&D in solar industry. In this study, we use Patentmeatrics to measure the R&D Portfolio and social network analysis exploring the knowledge flow

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17

Wei, wen-zhe, and 魏穩哲. "The phosgene heat-flow field analysis of a office room in combination with two novel green technologies: Light-duct (LIDC) and photovoltaic (PV) ventilated glazing." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/224333.

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碩士<br>中華大學<br>機械工程學系碩士班<br>101<br>Now applying the thin film photovoltaic technology for office room integration, and a two stage parabolic trough concentrating photovoltaic/thermal (TTCSPV/T) system using spectral beam splitting system, collect hot air driving air flow, mixing the air flow of the PV ventilated glazing to the room. To provide heating air increasing room temperature during the winter season. On the contrary, in the summer season TTCSPV/T integrates thermo-electric cooling (TEC) to collect cold air driving air flow, mixing the air flow of the PV ventilated glazing to the room. T

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18

Ratnam, Elizabeth L. "Balancing distributor and customer benefits of battery storage co-located with solar PV." Thesis, 2016. http://hdl.handle.net/1959.13/1312195.

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Research Doctorate - Doctor of Philosophy (PhD)<br>In recent years, a rapid and dramatic increase in electrical power generation from renewable energy sources has been observed in many countries. Rapid increases in grid-connected small-scale solar photovoltaics (PV) have been driven by government incentives and renewable energy rebates, including residential feed-in tariffs and the financial policy of net metering. However, new challenges arise in balancing the generation of electricity with variable demand at all times as traditional fossil fuel-fired generators are retired and replaced with

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