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Thematische Bibliographien / Analysis of medium voltage distribution grid / Dissertationen

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Dissertationen zum Thema „Analysis of medium voltage distribution grid“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

Tendolkar, Chaitanya. "An Analysis of Geospatial Factors in Medium Voltage Grid Distribution Network Routing." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264248.

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To provide electricity access to the population currently deprived of it, is one of the sustainable development goals. Although the number is decreasing and is below 1 billion people without access to electricity for the first time in the year 2017, there is still much to be done. At the current rate of electrification an additional approximately 550 million people of those deprived now would have access to electricity by the year 2030, but 650million would still be without electricity access. This report studies the spatial factors that affect how MV network expansion occurs. The motivation f

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2

Navrátil, Stanislav. "Předpokládaná opatření v sítí VN pro naplnění závěrů NAP SG v oblasti OZE a elektromobility." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442471.

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This thesis is focused on demonstrating the impact of the implementation of decentralized distributed energy sources (mainly RES) and electromobility technologies to electrical parameters in Czech medium voltage distribution network. Thesis is divided into two main chapters. First one is a brief theoretical summary of this problematic and the second one is a practical software simulation on a real medium voltage network. Proposed implementation scenarios are based on EU and national strategic plans for time period from 2020 to 2040.

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3

Qi, Qi. "Benefit analysis of using soft DC links in medium voltage distribution networks." Thesis, Cardiff University, 2018. http://orca.cf.ac.uk/114978/.

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Soft DC Links are power electronic converters enabling the control of power flow between distribution feeders or networks. This thesis considers the use of Soft DC Links in Medium Voltage (MV) distribution networks to improve network operation while facilitating the integration of distributed generators (DGs). Soft DC Links include Soft Open Points (SOPs) and Medium Voltage Direct Current (MVDC) links. An SOP can be installed to replace mechanical switchgear in a network, providing controllable active power exchange between connected feeders, as well as reactive power compensation at each inte

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4

Tomaszewski, Michal. "Reactive power management capabilities of Swedish sub-transmission and medium voltage level grid." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-240411.

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Rising penetration of renewable energy sources in electric power grids isboth a challenge and an opportunity to optimally utilize the potential of eitherwind or PV energy sources, to stabilize operation of future power systems.Bi-directional ows between distribution and transmission system operatorscause signicant problems with keeping the voltages in the grid within admissiblelimits. This paper contains description of Oland's island mediumandlow-voltage electric power grid, ranging from 0.4 kV to 130 kV in thepurpose of quasi-static analysis of active and reactive power ows in the system.Goal

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Shahnia, Farhad. "Analysis and correction of voltage profile in low voltage distribution networks containing photovoltaic cells and electric vehicles." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/50834/1/Farhad_Shahnia_Thesis.pdf.

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Voltage drop and rise at network peak and off–peak periods along with voltage unbalance are the major power quality problems in low voltage distribution networks. Usually, the utilities try to use adjusting the transformer tap changers as a solution for the voltage drop. They also try to distribute the loads equally as a solution for network voltage unbalance problem. On the other hand, the ever increasing energy demand, along with the necessity of cost reduction and higher reliability requirements, are driving the modern power systems towards Distributed Generation (DG) units. This can be in

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Karnama, Ahmad. "Analysis of Integration of Plug-in Hybrid Electric Vehicles in the Distribution Grid." Thesis, KTH, Elektriska energisystem, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119243.

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The new generation of cars are so-called Plug-in Hybrid Electric Vehicles (PHEVs) which has the grid connection capability. By the introduction of these vehicles, the grid issues will be connected to the private car transportation sector for the first time. The cars from the gird perspective can be considered as a regular load with certain power factor. The effects of this type of new load in distribution grid are studied in this thesis. By modelling the cars as regular load, the effects of the cars in three distinct areas in Stockholm are investigated. The car number in each area is estimated

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7

Mehryoon, Shah M. "Analysis and Comparison of Power Loss and Voltage Drop of 15 kV and 20 kV Medium Voltage Levels in the North Substation of the Kabul Power Distribution System by CYMDIST." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1258137124.

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8

Mehryoon, Shah M. "Analysis and comparison of power loss and voltage drop of 15 kV and 20 kV medium voltage levels in the north substation of the Kabul power distrubution system by CYMDIST." Ohio : Ohio University, 2009. http://www.ohiolink.edu/etd/view.cgi?ohiou1258137124.

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9

Gamal, Abdel-Latif Hemdan Nasser [Verfasser], and Michael [Akademischer Betreuer] Kurrat. "Analysis and Optimization of medium Voltage Distribution Networks with Integration of Decentralized Generation / Nasser Gamal Abdel-Latif Hemdan ; Betreuer: Michael Kurrat." Braunschweig : Technische Universität Braunschweig, 2011. http://d-nb.info/1175825816/34.

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10

Yu, Jianghui. "DC Fault Current Analysis and Control for Modular Multilevel Converters." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/78054.

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Recent research into industrial applications of electric power conversion shows an increase in the use of renewable energy sources and an increase in the need for electric power by the loads. The Medium-Voltage DC (MVDC) concept can be an optimal solution. On the other hand, the Modular Multilevel Converter (MMC) is an attractive converter topology choice, as it has advantages such as excellent harmonic performance, distributed energy storage, and near ideal current and voltage scalability. The fault response, on the other hand, is a big challenge for the MVDC distribution systems and the t

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11

Hajek, Martin. "Analysis of potential applications and business models for battery energy storage systems on a low and medium voltage distribution systems in Brazil." reponame:Repositório Institucional da UFPR, 2017. http://hdl.handle.net/1884/53408.

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Orientador : Prof. Dr. Alexandre Rasi Aoki<br>Coorientadores : Prof. Dr. Patricio Rodolfo Impinnisi ; Prof. Dr. Hans-Georg Schweiger<br>Dissertação (mestrado) - Universidade Federal do Paraná, Setor de Tecnologia, Programa de Pós-Graduação em Engenharia Elétrica. Defesa: Curitiba, 22/05/2017<br>Inclui referências : p. 221-227<br>Resumo: A escassez de recursos, o aquecimento global e os desastres naturais aumentaram a conscientização ambiental e desencadearam notáveis esforços de transformação em todo o mundo, afastando da geração baseada em fontes fósseis para a geração de recursos energéticos

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12

Samadi, Afshin. "Large Scale Solar Power Integration in Distribution Grids : PV Modelling, Voltage Support and Aggregation Studies." Doctoral thesis, KTH, Elektriska energisystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-154602.

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Long term supporting schemes for photovoltaic (PV) system installation have led to accommodating large numbers of PV systems within load pockets in distribution grids. High penetrations of PV systems can cause new technical challenges, such as voltage rise due to reverse power flow during light load and high PV generation conditions. Therefore, new strategies are required to address the associated challenges. Moreover, due to these changes in distribution grids, a different response behavior of the distribution grid on the transmission side can be expected. Hence, a new equivalent model of dis

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Hinz, Fabian. "Voltage Stability and Reactive Power Provision in a Decentralizing Energy System." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-229585.

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Electricity grids require the ancillary services frequency control, grid operation, re-establishment of supply and voltage stability for a proper operation. Historically, conventional power plants in the transmission grid were the main source providing these services. An increasing share of decentralized renewable energy in the electricity mix causes decreasing dispatch times for conventional power plants and may consequently lead to a partial replacement of these technologies. Decentralized energy sources are technically capable of providing ancillary services. This work focuses on the provis

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14

Farias, de Barros Heitor. "Planification de réseaux de distribution mixtes AC/DC." Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALT050.

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L'intégration croissante des ressources énergétiques natives en courant continu à l'échelle de réseaux électriques, telles que les systèmes photovoltaïques, les véhicules électriques, les systèmes de stockage et les centres de données, remet en question le choix conventionnel des systèmes de distribution en courant alternatif (AC) au niveau de la moyenne tension (MV). Cette recherche vise à évaluer la viabilité technique et économique des réseaux de distribution MV AC/DC en développant des outils de planification pour les réseaux hybrides.L'étude propose des modèles de planification optimale d

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15

Häggblom, Johan, and Jonathan Jerner. "Photovoltaic Power Production and Energy Storage Systems in Low-Voltage Power Grids." Thesis, Linköpings universitet, Fordonssystem, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-156875.

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In recent years, photovoltaic (PV) power production have seen an increase and the PV power systems are often located in the distribution grids close to the consumers. Since the distributions grids rarely are designed for power production, investigation of its effects is needed. It is seen in this thesis that PV power production will cause voltages to rise, potentially to levels exceeding the limits that grid owners have to abide by. A model of a distribution grid is developed in MathWorks MATLAB. The model contains a transformer, cables, households, energy storage systems (ESS:s) and photovolt

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Bastos, Camila Bianka Silva. "Estudo dos impactos de um sistema fotovoltaico conectado à rede elétrica utilizando análises QSTS." Universidade do Estado de Santa Catarina, 2015. http://tede.udesc.br/handle/handle/2081.

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Made available in DSpace on 2016-12-12T20:27:38Z (GMT). No. of bitstreams: 1 Camila Bianka Silva Bastos.pdf: 1963598 bytes, checksum: bee88eacc3f6e3c327425297316a691d (MD5) Previous issue date: 2015-02-27<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This dissertation presents a study of the operation of two different three-phase grid-connected test-grids with the connection of a 1MWp photovoltaic system. Two analysis methods are used to evaluate the impacts of this photovoltaic systeM, these methods being conventional static analysis and the analysis known as Quasi-Stati

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CHAUDHARY, PRIYANKA. "INTEGRATION OF SPV BASED SYSTEMS INTO DISTRIBUTION GRID WITH POWER QUALITY ANALYSIS." Thesis, 2018. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16493.

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The integration of solar photovoltaic (SPV) with grid as distributed generation (DG) are able to solve the demand and generation mismatch issues especially in developing countries. Integration of SPV systems at medium voltage (MV)/ low voltage (LV) grid level poses some negative impacts such as voltage limit violation at the point of common coupling (PCC), frequency variations, grid stability issues, etc. The large scale penetration of PV power into electric distribution system possesses a great threat to grid stability and reliability. Therefore, the utilities are developing the

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18

Lang, Lin Kun, and 林坤良. "A Rigid Power Flow Model and Steady-State Characteristic Analysis of Medium Voltage DC Distribution Systems for Marine Vessels." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/54859299248172257709.

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碩士<br>國立高雄海洋科技大學<br>輪機工程研究所<br>99<br>Medium voltage DC (MVDC) electrical distribution system that is a novel technique for sea and undersea vehicles has been extensively studied by ship building corporations and end-users in recent years. In this type of distribution systems, the steady-state stability issue is important because of the presence of different types of power converters and both of AC and DC power supply in the system. Power flow analyses can be carried to address this issue. This thesis aims to build a set of power flow analysis model for ship MVDC distribution systems with diffe

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19

Salve, Rima. "PV Based Converter with Integrated Battery Charger for DC Micro-Grid Applications." Thesis, 2014. http://hdl.handle.net/1805/6108.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>This thesis presents a converter topology for photovoltaic panels. This topology minimizes the number of switching devices used, thereby reducing power losses that arise from high frequency switching operations. The control strategy is implemented using a simple micro-controller that implements the proportional plus integral control. All the control loops are closed feedback loops hence minimizing error instantaneously and adjusting efficiently to system variations. The energy management between three components, namely, the photovol

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20

Agrawal, Rimjhim. "Intelligent Techniques for Monitoring of Integrated Power Systems." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3085.

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Continued increase in system load leading to a reduction in operating margins, as well as the tendency to move towards a deregulated grid with renewable energy sources has increased the vulnerability of the grid to blackouts. Advanced intelligent techniques are therefore required to design new monitoring schemes that enable smart grid operation in a secure and robust manner. As the grid is highly interconnected, monitoring of transmission and distribution systems is increasingly relying on digital communication. Conventional security assessment techniques are slow, hampering real-time decisio

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21

Agrawal, Rimjhim. "Intelligent Techniques for Monitoring of Integrated Power Systems." Thesis, 2013. http://hdl.handle.net/2005/3085.

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Continued increase in system load leading to a reduction in operating margins, as well as the tendency to move towards a deregulated grid with renewable energy sources has increased the vulnerability of the grid to blackouts. Advanced intelligent techniques are therefore required to design new monitoring schemes that enable smart grid operation in a secure and robust manner. As the grid is highly interconnected, monitoring of transmission and distribution systems is increasingly relying on digital communication. Conventional security assessment techniques are slow, hampering real-time decisio

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