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Dissertations / Theses on the topic 'High voltage direct current cables'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Diban, Bassel. "Life Estimation of HVDC Cables Subjected to Qualification Test Conditions." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18955/.

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The goal of the Master Thesis is estimating the life of HVDC XLPE-insulated cables subjected to the Qualification Tests conditions according to CIGRÉ Technical Brochure 496 and for different values of the coefficients (a) and (b). During the Electrical Type Test (TT), a series of load cycles (LC) with DC voltage UT=1.85 U0 (rated voltage) are applied in three stages, i.e.: • 12 cycles lasting 24 hours each with a negative polarity of the applied voltage (12 days). • 12 cycles lasting 24 hours each with a positive polarity of the applied voltage (12 days). • 3 cycles lasting 48 hours each w

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Pallon, Love. "Polyethylene/metal oxide nanocomposites for electrical insulation in future HVDC-cables : probing properties from nano to macro." Doctoral thesis, KTH, Polymera material, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-193591.

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Nanocomposites of polyethylene and metal oxide nanoparticles have shown to be a feasible approachto the next generation of insulation in high voltage direct current cables. In order to reach an operationvoltage of 1 MV new insulation materials with reduced conductivity and increased breakdown strengthas compared to modern low-density polyethylene (LDPE) is needed.In this work polyethylene MgO nanocomposites for electrical insulation has been produced andcharacterized both from an electrical and material perspective. The MgO nanoparticles weresynthesized into polycrystalline nanoparticles with

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3

Boudjelthia, H. "Corona suppression on high voltage direct current systems." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235291.

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Zhang, Yushu. "Multilevel voltage source converters in high voltage direct current transmission systems." Thesis, University of Strathclyde, 2012. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25814.

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This research focuses on voltage source multilevel converters in high voltage direct current (HVDC) transmission systems. The first Voltage Source Converter based HVDC (VSC-HVDC) systems with series connected IGBTs in a two-level converter represented a solution to meet industrial and economical requirements but is associated with significant drawbacks such as high dv/dt and di/dt, high switching loss, and poor output voltage and current quality. To overcome these issues, the multilevel converter was proposed for HVDC application. The Modular Multilevel Converter (M2C) was the first multilevel

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5

Balasubramaniam, Senthooran. "Series current flow controllers for high voltage direct current transmission grids." Thesis, Cardiff University, 2017. http://orca.cf.ac.uk/104744/.

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Large scale grid integration of renewables and cross country border energy exchange may be facilitated by multi-terminal high-voltage direct-current (MTdc) grids. However, as the number of terminals and dc lines increases, power flow management between dc nodes becomes amajor challenge. The current carrying capability of dc lines is limited by their thermal and electric stress limits. Thus, the line current must be maintained within the permissible operational region to protect the lines fromdamages. This thesis addresses this fundamental issue through the introduction of inter-line current fl

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6

Cwikowski, Oliver. "Synthetic testing of high voltage direct current circuit breakers." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/synthetic-testing-of-high-voltage-direct-current-circuit-breakers(2f15e62f-8b2c-4e29-884e-323b90af2d11).html.

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The UK is facing two major challenges in the development of its electricity network. First, two thirds of the existing power stations are expected to close by 2030. Second, is the requirement to reduce its CO2 emissions by 80% by 2050. Both of these challenges are significant in their own right. The fact that they are occurring at the same time, generates a significant amount of threats to the existing power system, but also provides many new opportunities. In order to meet both these challenges, significant amounts of offshore wind generation has been installed in the UK. For the wind generat

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7

Cheah, Marc. "Offshore wind integration through high voltage direct current systems." Thesis, Cardiff University, 2017. http://orca.cf.ac.uk/101463/.

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Offshore wind generation has an important role in the transition to renewable energy. In particular, HVDC-connected Offshore Wind Power Plants (OWPPs) are emerging as an economical solution for long distances from the shore. This thesis was focused on three key areas related to planning, operation and stability issues, which are present technical challenges in the integration of OWPPs through VSC-HVDC transmission systems. In relation to planning, the installation of interlink cables between OWPPs was analysed to increase the wind power transfer. Different interlink options were compared based

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8

Luth, Thomas. "DC/DC converters for high voltage direct current transmission." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/24466.

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High Voltage Direct Current (HVDC) transmission has to date mostly been used for point-to-point projects, with only a few select projects being designed from the outset to incorporate multiple terminals. Any future HVDC network is therefore likely to evolve out of this pool of HVDC connections. As technology improves, the voltage rating, at the point of commission, of the these connections increases. Interconnection therefore requires the DC equivalent of the transformer, to bridge the voltage levels and create a multi-terminal network. This thesis investigates new potential DC/DC converter to

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9

Freye, Claudius [Verfasser], Frank [Akademischer Betreuer] Jenau, and Thomas [Gutachter] Leibfried. "Methoden und Aspekte zur Leitfähigkeitsanalyse von Isolationsmaterialien der Kabeltechnologie und zur Isolationskoordination für Systeme der Hochspannungsgleichstromübertragung (HGÜ) : Methods and aspects for conductivity analysis of insulating materials in cable technology and for insulation coordination in high-voltage direct current transmission (HVDC) systems / Claudius Freye ; Gutachter: Thomas Leibfried ; Betreuer: Frank Jenau." Dortmund : Universitätsbibliothek Dortmund, 2020. http://d-nb.info/1214887627/34.

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10

Preuß, Alan [Verfasser], and Mathias [Akademischer Betreuer] Noe. "Development of high-temperature superconductor cables for high direct current applications / Alan Preuß ; Betreuer: Mathias Noe." Karlsruhe : KIT Scientific Publishing, 2020. http://d-nb.info/1224048105/34.

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11

Livermore, Luke. "Integration of offshore wind farms through High Voltage Direct Current networks." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/42892/.

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The integration of offshore wind farms through Multi Terminal DC (MTDC) networks into the GB network was investigated. The ability of Voltage Source Converter (VSC) High Voltage Direct Current (HVDC) to damp Subsynchronous Resonance (SSR) and ride through onshore AC faults was studied. Due to increased levels of wind generation in Scotland, substantial onshore and offshore reinforcements to the GB transmission network are proposed. Possible inland reinforcements include the use of series compensation through fixed capacitors. This potentially can lead to SSR. Offshore reinforcements are propos

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12

Ridenour, Daniel Keith. "Examination of Power Systems Solutions Considering High Voltage Direct Current Transmission." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/63927.

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Since the end of the Current Wars in the 19th Century, alternating current (AC) has dominated the production, transmission, and use of electrical energy. The chief reason for this dominance was (and continues to be) that AC offers a way minimize transmission losses yet transmit large power from generation to load. With the Digital Revolution and the entrance of most of the post-industrialized world into the Information Age, energy usage levels have increased due to the proliferation of electrical and electronic devices in nearly all sectors of life. A stable electrical grid has become synon

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13

Bhattacharya, Subroto. "Simulation of transient phenomena in high voltage direct-current converter systems." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26959.

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In this thesis models for the simulation of transient phenomena in high voltage direct-current systems are developed. The new converter model is versatile and the solution algorithm is free from numerical oscillations. A new generic inverter control described in this thesis is based on a predictive approach. Steady-state and transient simulations of two-terminal and multi-terminal (i.e., a parallel converter system) high voltage direct-current systems are carried out using the new converter system model. Comparison between the two-terminal transient simulation results and the high voltage dire

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Tiancheng, Zhang, and Zhang Yunlin. "High voltage Direct Current lines in the Chinese electric power system." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-12757.

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Jimenez, Carrizosa Miguel. "Hierarchical control scheme for multi-terminal high voltage direct current power networks." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112039/document.

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Cette thèse traite de la commande hiérarchique de réseaux à courant continu multi-terminaux à haute tension (MT-HVDC) intégrant des sources d'énergie renouvelables à grande échelle. Le schéma de contrôle proposé est composé de quatre ‘couches’ : le contrôle local où se trouvent les convertisseurs de puissance, avec une échelle de temps de l’ordre de la milliseconde ; le contrôle primaire qui est décentralisé et appliqué à plusieurs terminaux avec une échelle du temps de l’ordre de la seconde ; un niveau de commande où la communication est prise en compte et où l’approche de Modèle du Commande

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Gowaid, Islam Azmy. "DC-DC converter designs for medium and high voltage direct current systems." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27933.

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DC fault protection is one challenge impeding the development of multi-terminal dc grids. The absence of manufacturing and operational standards has led to many point-to-point HVDC links built at different voltage levels, which creates another challenge. Therefore, the issues of voltage matching and dc fault isolation in high voltage dc systems are undergoing extensive research and are the focus of this thesis. The modular multilevel design of dual active bridge (DAB) converters is analysed in light of state-of-the-art research in the field. The multilevel DAB structure is meant to serve mediu

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17

Myhre, Jørgen Chr. "Electrical Power Supply to Offshore Oil Installations by High Voltage Direct Current Transmission." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, 2001. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-383.

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<p>This study was initiated to investigate if it could be feasible to supply offshore oil installations in the North Sea with electrical power from land. A prestudy of alternative converter topologies indicated that the most promising solution would be to investigate a conventional system with reduced synchronous compensator rating.</p><p>The study starts with a summary of the state of power supply to offshore installations today, and a short review of classical HVDC transmission. It goes on to analyse how a passive network without sources influences the inverter. The transmission, with its cu

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18

湯世傑 and Sai-kit Tong. "A computer-aided measurement system for monopolar high-voltage direct-current coronating lines." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1986. http://hub.hku.hk/bib/B31207467.

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Tong, Sai-kit. "A computer-aided measurement system for monopolar high-voltage direct-current coronating lines /." [Hong Kong] : University of Hong Kong, 1986. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12321771.

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Chen, Yijing. "Nonlinear Control and Stability Analysis of Multi-Terminal High Voltage Direct Current Networks." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112041/document.

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Cette thèse a été consacrée à l'étude des réseaux multi-terminaux haute tension à courant continu (MTDC). Les principales contributions étaient dans le domaine du contrôle automatique non linéaire, appliquées aux systèmes électriques, électronique de puissance et les sources d'énergie renouvelables. Le travail de recherche a été lancé avec l'intention de combler certaines lacunes entre la théorie et la pratique, en particulier: 1) d'enquêter sur diverses approches de contrôle pour le but d'améliorer la performance des systèmes MTDC; 2) d'établir des connexions entre la conception du contrôle e

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PLAISANT, ANDRE LUIZ DA ROSA. "DYNAMIC SIMULATION OF HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEMS IN A PERSONAL COMPUTER." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1991. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8803@1.

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CENTRO DE PESQUISA DE ENERGIA ELÉTRICA<br>Este trabalho trata do desenvolvimento e implementação de software destinado à simulação dinâmica de sistemas de transmissão 3m corrente contínua em microcomputador digital. A formulação matemática para a solução das equações diferenciais baseia-se nas vaiáveis de estado do sistema, e o método de integração numérica utilizado é o de Eüler Modificado. O modelo dinâmico de máquina síncrona é representado em suas grandezas de fase a, b, c. O programa digital conta, ainda, com telas gráficas para a visualização de resultados.<br>This work is conce

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22

Giraneza, Martial. "High voltage direct current (HVDC) in applications for distributed independent power providers (IPP)." Thesis, Cape Peninsula University of Technology, 2013. http://hdl.handle.net/20.500.11838/1077.

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Thesis submitted in fulfillment of the requirements for the degree Master of Technology: Electrical Engineering in the Faculty of Engineering at the Cape Peninsula University of Technology 2013<br>The development of power electronics did remove most of technical limitations that high voltage direct current (HVDC) used to have. HVDC, now, is mostly used for the transmission of bulk power over long distances and for the interconnection of asynchronous grid. Along with the development of the HVDC, the growth of power demand also increased beyond the utilities capacities. Besides the on-going incr

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Adeuyi, Oluwole Daniel. "Grid connection of offshore wind farms through multi-terminal high voltage direct current networks." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/90288/.

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This thesis investigated the capability of multi-terminal high voltage direct current (HVDC) networks based on voltage source converter (VSC) technology to transfer power generated from offshore wind farms to onshore grids and interconnect the grids of different countries. Variable speed wind turbines and other low-carbon generators or loads that are connected through inverters do not inherently contribute to the inertia of AC grids. A coordinated control scheme for frequency support from multi-terminal VSC-HVDC (MTDC) scheme was designed to transfer additional power to AC grids from the kinet

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Tzelepis, Dimitrios. "Protection, fault location & control in high voltage multi terminal direct current (HV-MTDC) grids." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28877.

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With an increased penetration of renewable energy sources, balancing the supply and demand is likely to be one of the major challenges in future power systems. Consequently, there is a growing need for meshed interconnections between countries in order to effectively share the available power capacity and thereby increase operational exibility and security of supply. This has been raised as a major issue in Europe but also in Asia and United States of America. The concept of supergrid has been identifed as a possible solution towards a newback bone transmission system, permitting massive integ

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Smith, Johan. "High voltage direct current strategy solving power delivery shortages to localized area of national grid." Thesis, Cape Peninsula University of Technology, 2009. http://hdl.handle.net/20.500.11838/1102.

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Thesis (MTech (Electrical Engineering))--Cape Peninsula University of Technology, 2009<br>The industrial and population growth of a nation can cause power delivery problems to localized areas of a national grid through their increased demand for electrical energy. One reason for these power shortages is the insufficient current carrying capacity of existing high voltage alternating current, (HVAC), transmission lines supplying the area. High voltage direct current (HVDC) transmission lines are a possible solution as they provide better power delivery than HVAC lines. New or upgrade

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Jiang, Xu [Verfasser]. "Protection Schemes for Modular Multilevel Converter Based High Voltage Direct Current Transmission System Converters / Xu Jiang." Aachen : Shaker, 2019. http://d-nb.info/1188550845/34.

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Otto, Abraham Johannes. "Direct current conductor corona modelling and metrology." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1497.

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Thesis (PhD (Electrical and Electronic Engineering))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: Prospects of up-rating existing high voltage direct current (HVDC) transmission schemes, as well as the conversion of existing alternating current (AC) to direct current (DC) lines and the development of new HVDC schemes in sub-Saharan Africa, have led to renewed interest in DC research. The radio interference (RI), audible noise (AN) and corona loss (CL) performance of HVDC transmission lines are critical factors when assessing the reliability of the line design. The RI performanc

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Farr, Ewan Mark. "Modelling, control and implementation of the alternate arm converter (AAC) : a new topology for high voltage direct current (HVDC) applications." Thesis, University of Nottingham, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.718463.

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Conventional electricity generation, transmission and distribution infrastructures are AC systems, which combine to form an AC grid. Supply security can be increased by interconnecting AC grids. Additionally, there is an increasing reliance on remote asyn-chronous distributed generation from bulk renewable energy sources. High Voltage Direct Current (HVDC) systems allow asynchronous AC networks to be connected, and are able to transmit bulk power over longer distances with a lower total cost-than High Voltage Alternating Current (HVAC) transmission, or are perhaps the only option. At both ends

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SILVA, MÁRCIO THELIO FERNANDES DA. "DESIGN & DEVELOPMENT OF A STANDARD FOR HIGH VOLTAGE IN DIRECT CURRENT IN THE RANGE OF 1 KV TO 50 KV." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=17889@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>Metrologia e qualidade estão intimamente relacionadas e constituem-se em poderoso instrumento de transformação da infraestrutura tecnológica de países e organizações. O avanço do desenvolvimento científico e tecnológico está fortemente embasado no avanço da metrologia. O Instituto Nacional de Metrologia, Normalização e Qualidade industrial (INMETRO) é o órgão máximo responsável pela conservação e manutenção das unidades de base e derivadas do Sistema Internacional de Unidades (SI) no país. A grandeza tensão em corrente contínua, até 1 kV, e

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Nobeen, Nadeesh. "Design and reliability of polymeric packages for high voltage power semiconductors." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/8957.

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This thesis focuses on the development of a novel polymer based housing for power thyristor devices typically used in long distance high voltage direct current (HVDC) transmission. Power thyristor devices used in HVDC power conversion stations are typically packaged in a hermetically sealed ceramic housing and have demonstrated an excellent history of reliability and performance. However, to avoid increasing the number of thyristors in future higher powered HVDC schemes thyristors having higher power ratings at 8.5 kV and sizes at 125 mm and 150 mm diameters are sought for implementation to ac

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Bonkarev, Maxim [Verfasser], and Harald [Akademischer Betreuer] Schwarz. "Concept analysis for High-Voltage Direct-Current circuit breakers for application in a network of HVDC transmission / Maxim Bonkarev ; Betreuer: Harald Schwarz." Cottbus : BTU Cottbus - Senftenberg, 2015. http://d-nb.info/1114283959/34.

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Langwasser, Marius [Verfasser], Marco [Akademischer Betreuer] Liserre, and Antonello [Gutachter] Monti. "Management and Protection of High-Voltage Direct Current Systems Based on Modular Multilevel Converters / Marius Langwasser ; Gutachter: Antonello Monti ; Betreuer: Marco Liserre." Kiel : Universitätsbibliothek Kiel, 2021. http://d-nb.info/1241537763/34.

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Reynes, Hugo. "Conception d'un module électronique de puissance pour application haute tension." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI035.

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Satisfaire les besoins en énergie de manière responsable est possible grâce aux énergies renouvelables, notamment éoliennes et solaires. Cependant ces centres de captation d’énergie sont éloignés dans zones de consommation. Le transport de l’énergie via des réseaux HVDC (haute tension courant continu) permet un rendement et une flexibilité avantageuse face au transport HVAC (haute tension courant alternatif). Ceci est rendu possible grâce aux convertisseurs utilisant l’électronique de puissance. Les récents développements sur les semi-conducteurs à large bande interdite, plus particulièrement

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Samborsky, Michael [Verfasser], Harald [Gutachter] Schwarz, Harald [Gutachter] Fien, and Heinz-Helmut [Gutachter] Schramm. "Conceptual aspects of future High Voltage Direct Current (HVDC) electrical power transmission networks / Michael Samborsky ; Gutachter: Harald Schwarz, Harald Fien, Heinz-Helmut Schramm." Cottbus : BTU Cottbus - Senftenberg, 2017. http://d-nb.info/1149052465/34.

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Krige, Ernst. "Harmonic interaction between weak AC systems and VSC-based HVDC schemes." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71704.

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Thesis (MScEng)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: The implementation of the Caprivi Link Interconnector (CLI) High Voltage Direct Current (HVDC) scheme in 2010 connecting the weak Namibian and Zambian Alternating Current (AC) transmission networks via overhead line is based on Voltage Source Converter (VSC) technology. This world-first combination of attributes presents a unique opportunity to study harmonic interaction between weak AC systems and VSC-based HVDC schemes. Relatively few publications exist that focus on AC and DC harmonic interaction and very few refer to VSC

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OLIVEIRA, YURI DOS REIS. "DEVELOPMENT OF ALGORITHMS FOR ESTIMATING PARAMETERS OF HIGH VOLTAGE DIRECT AND ALTERNATING CURRENT TESTS IN ACCORDANCE WITH THE STANDARD ABNT NBR IEC 60060-1: 2013." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=30269@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO<br>Os ensaios dielétricos em equipamentos para alta tensão em corrente alternada (ATCA) e corrente contínua (ATCC) requerem medições de grandezas elétricas, e as análises de desempenho dos equipamentos ensaiados são diretamente dependentes dos resultados obtidos por tais medições. Atualmente, para garantir a confiabilidade dos resultados dos ensaios, é necessário que a forma de onda da tensão aplicada ao equipamento esteja

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Mouton, Gerton Nicolaas Jacobus. "An evaluation of different material line insulators under high voltage AC and bipolar DC excitation in a marine polluted environment." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71940.

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Thesis (MScEng)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: The worldwide increase in the popularity of high voltage direct current (HVDC) power transmission application has led to questions regarding the performance of high voltage alternating current (HVAC) insulators when energized under HVDC excitation. These questions have led researchers conduct numerous research projects worldwide. A particular question NamPower (the power utility in Namibia) has faced is: how do these insulators perform and age when energized under HVDC excitation in heavily polluted environments? This questio

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Yahyaoui, Hanen. "Matériaux isolants pour appareillages haute tension dans le domaine du courant continu : comportement et vieillissement." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS267.

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Les projets de mise en place dans les prochaines décennies de « super réseaux intelligents », qui prévoient la construction de centrales de production à des milliers de kms des centres de consommation, nécessite le développement à large échelle du transport de très fortes puissances par câbles à courant continu. Les principaux verrous à ce développement se situent au niveau du câble et des appareillages adéquats, qui doivent être conçus sur des critères spécifiques et comporter des matériaux isolants ayant des propriétés particulières. Outre la variation de la résistivité qui dépend fortement

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Yazdanpanah, Goharrizi Ali. "Parallel multi-modal optimal design and sensitivity assessment for electric power systems." IEEE Transaction on Power Delivery, 2016. http://hdl.handle.net/1993/31175.

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This thesis proposes a novel algorithm to optimize multi-modal, nonlinear, black-box objective functions for electric power system design using an electromagnetic transients (EMT) simulator. The algorithm discovers multiple local optimal solutions for a given complex power system, and then generates accurate surrogate models of an objective function around each discovered local optimal solution. These surrogate models represent the local behaviour of the objective function that can be used in the subsequent stages of sensitivity analyses. Using surrogate models instead of intensive transient s

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Marten, Anne-Katrin [Verfasser], Dirk [Akademischer Betreuer] Westermann, Dirk Van [Akademischer Betreuer] Hertem, and Jutta [Akademischer Betreuer] Hanson. "Operation of meshed high voltage direct current (HVDC) overlay grids : from operational planning to real time operation / Anne-Katrin Marten. Betreuer: Dirk Westermann. Gutachter: Dirk Van Hertem ; Jutta Hanson." Ilmenau : Universitätsbibliothek Ilmenau, 2015. http://d-nb.info/1082134775/34.

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Marten, Anne-Katrin Verfasser], Dirk [Akademischer Betreuer] Westermann, Hertem Dirk [Akademischer Betreuer] [Van, and Jutta [Akademischer Betreuer] Hanson. "Operation of meshed high voltage direct current (HVDC) overlay grids : from operational planning to real time operation / Anne-Katrin Marten. Betreuer: Dirk Westermann. Gutachter: Dirk Van Hertem ; Jutta Hanson." Ilmenau : Universitätsbibliothek Ilmenau, 2015. http://d-nb.info/1082134775/34.

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Marten, Anne-Katrin Verfasser], Dirk [Akademischer Betreuer] [Westermann, Hertem Dirk [Akademischer Betreuer] Van, and Jutta [Akademischer Betreuer] Hanson. "Operation of meshed high voltage direct current (HVDC) overlay grids : from operational planning to real time operation / Anne-Katrin Marten. Betreuer: Dirk Westermann. Gutachter: Dirk Van Hertem ; Jutta Hanson." Ilmenau : Universitätsbibliothek Ilmenau, 2015. http://nbn-resolving.de/urn:nbn:de:gbv:ilm1-2015000216.

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Bracek, David. "Návrh provedení plošné kabelizace venkovních vedení 22 kV určené uzlové oblasti." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413123.

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This diploma thesis deals with the technical design of extensive replacement of overhead lines by high voltage cables in the given distribution area. In its first part the thesis is focused on the survey of the concerning legislation and technical standards, which must be followed during making technical design documentation. It also mentions the processes which precede the replacement itself. There are also the operational differences between the overhead lines and the high voltage cables in the first part, too. The second part is focused on the technical description of the given area, the te

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Serbia, Nicola. "Convertisseurs modulaires multiniveaux pour le transport d'énergie électrique en courant continu haute tension." Thesis, Toulouse, INPT, 2014. http://www.theses.fr/2014INPT0007/document.

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Les travaux présentés dans ce mémoire ont été réalisés dans le cadre d’une collaboration entre le LAboratoire PLAsma et Conversion d’Énergie (LAPLACE), Université de Toulouse, et la Seconde Université de Naples (SUN). Ce travail a reçu le soutien de la société Rongxin Power Electronics (Chine) et traite de l’utilisation des convertisseurs multi-niveaux pour le transport d’énergie électrique en courant continu Haute Tension (HVDC). Depuis plus d’un siècle, la génération, la transmission, la distribution et l’utilisation de l’énergie électrique sont principalement basées sur des systèmes alterna

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Akkari, Samy. "Contrôle d'un système multi-terminal HVDC (MTDC) et étude des interactions entre les réseaux AC et le réseau MTDC." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLC069/document.

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La multiplication des projets HVDC de par le monde démontre l'engouement toujours croissant pour cette technologie de transport de l'électricité. La grande majorité de ces transmissions HVDC correspondent à des liaisons point-à-point et se basent sur des convertisseurs AC/DC de type LCC ou VSC à 2 ou 3 niveaux. Les travaux de cette thèse se focalisent sur l'étude, le contrôle et la commande de systèmes HVDC de type multi-terminal (MTDC), avec des convertisseurs de type VSC classique ou modulaire multi-niveaux. La première étape consiste à obtenir les modèles moyens du VSC classique et du MMC.

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Zavattoni, Laëtitia. "Conduction phenomena through gas and insulating solids in HVDC gas insulated substations, and consequences on electric field distribution." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT063/document.

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L'émergence des énergies renouvelables a entraîné le développement de nouvelles technologies pour la distribution de l'énergie sur de longues distances. Ces dernières sont basées sur le transport via de hautes tensions continues (HVDC) pour éviter les pertes capacitives. Ce réseau de distribution est interconnecté via des Postes Sous Enveloppes Métalliques (PSEM), dont l'isolation est composée de gaz sous pression (SF6) et d'isolants solides (résine époxy), qui doivent résister sous HVDC. Dans ces dispositifs, le champ électrique n'est plus déterminé par la permittivité relative des matériaux,

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Lundin, Rasmus, and Benjamin Beitler-Dorch. "Modelling and Analysis of Mobile Energy Transmission for Offshore Wind Power : An analysis of flow batteries as an energy transmission system for offshore wind power." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-40082.

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A comparison between a traditional fixed high voltage direct current energy transmission system and a mobile transmission system utilizing vanadium redox flow batteries has been conducted in this degree work. The purpose of this comparison was to evaluate if a mobile energy transmission system could be competitive in terms of energy efficiency and cost-effectiveness for use in offshore wind power applications. A literary study was made to fully grasp the various technologies and to create empirical ground of which cost estimation methods and energy calculations could be derived. A specific sc

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Barrera, Gallegos Noé. "Sensibilité Paramétrique pour l’Analyse Dynamique des Réseaux à Courant Continu." Thesis, Ecole centrale de Lille, 2016. http://www.theses.fr/2016ECLI0021/document.

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Ce travail de thèse a pour finalité de présenter différentes méthodologies pour l’analyse de réseaux à courant continue haut tension (HVDC). La théorie fondamentale de l‘analyse de sensitivité s’applique sur l’analyse des systèmes électriques de puissance dans les différentes étapes de la production et la transmission de l’énergie. Des outils de bases concernant cette théorie sont devenus populaires et très utilisés.En pratique, les facteurs de participation représentent un exemple de ces outils, utilisés depuis longtemps. Ils ont été proposés par (Perez-Arriaga et al., 1982). Le but des facte

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Izzularab, Mohamed. "Repartition du potentiel electrique le long d'une surface isolante polluee soumise a des decharges : application a l'etude des isolateurs ht pour reseaux de transport a courant continu." Toulouse 3, 1987. http://www.theses.fr/1987TOU30087.

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Etude du contournement des isolateurs pour ligne h. T. C. C. Etude graphique de la tension disruptive en fonction de la longueur de decharge. Conception des isolateurs a l'aide de modeles unidimensionnels permettant de definir un nouveau facteur de forme. Calcul numerique de la distribution du potentiel sur des isolateurs pollues ou givres

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Hadjikypris, Melios. "Supervisory control scheme for FACTS and HVDC based damping of inter-area power oscillations in hybrid AC-DC power systems." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/supervisory-control-scheme-for-facts-and-hvdc-based-damping-of-interarea-power-oscillations-in-hybrid-acdc-power-systems(cc03b44a-97f9-44ec-839f-5dcbcf2801f1).html.

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Modern interconnected power systems are becoming highly complex and sophisticated, while increasing energy penetrations through congested inter-tie lines causing the operating point approaching stability margins. This as a result, exposes the overall system to potential low frequency power oscillation phenomena following disturbances. This in turn can lead to cascading events and blackouts. Recent approaches to counteract this phenomenon are based on utilization of wide area monitoring systems (WAMS) and power electronics based devices, such as flexible AC transmission systems (FACTS) and HVDC

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