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Relevant bibliographies by topics / Active power loss / Dissertations / Theses

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Dissertations / Theses on the topic 'Active power loss'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Ding, Jiansong. "Optimisation of a power distribution network's active power loss and reliability performance." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=20299.

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The deregulation of UK power distribution market started in 1990. Due to the drivers from the regulator, DNOs need to invest appropriately and optimise network operation by innovations to satisfy the targets set by the industry regulator, the Office of Gas and Electricity Markets (Ofgem). Reduction of network losses and improvement of reliability of supply to customers are extremely important for distribution network operators (DNOs) to take into account when designing and operating their networks. They are important because of the need to minimise wasted energy and carbon emissions and to pro

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2

Rosero, Chandi Carlos Xavier. "Active power sharing and frequency regulation in inverter-based islanded microgrids subject to clock drifts, damage in power links and loss of communications." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/668863.

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Microgrids (MGs) are small-scale power systems containing storage elements, loads and distributed generators that are interfaced with the electric network via power electronic inverters. When an MG is in islanded mode, its dynamics are no longer dominated by the main grid. Then, inverters, driven by digital processors that may exchange data over digital communication, must act as voltage source inverters (VSIs) to take coordinated actions to ensure power quality and supply. The scope of this thesis is bounded to control strategies for active power sharing and frequency regulation in islan

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3

Santos, Junior Bartolomeu Ferreira dos. "UMA METODOLOGIA PARA ALOCAÇÃO DE PERDAS ATIVAS DE TRANSMISSÃO EM AMBIENTE COMPETITIVO." Universidade Federal do Maranhão, 2007. http://tedebc.ufma.br:8080/jspui/handle/tede/437.

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Made available in DSpace on 2016-08-17T14:53:08Z (GMT). No. of bitstreams: 1 Bartolomeu ferreira.pdf: 2681101 bytes, checksum: 05d2fad3f69568c193c20ccd8addecd7 (MD5) Previous issue date: 2007-04-13<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The goal of loss allocation methodologies is to share the responsibility for transmission losses among generators and loads. Several loss allocation methods have been developed to solve this problem. However, there is not consensus regarding to the most appropriated approach methodology. There are some methods presenting suitable

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4

Boora, Arash Abbasalizadeh. "Flexible high-power multi DC-DC converters for train systems." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/33208/1/Arash_Boora_Thesis.pdf.

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This thesis reports on the investigations, simulations and analyses of novel power electronics topologies and control strategies. The research is financed by an Australian Research Council (ARC) Linkage (07-09) grant. Therefore, in addition to developing original research and contributing to the available knowledge of power electronics, it also contributes to the design of a DC-DC converter for specific application to the auxiliary power supply in electric trains. Specifically, in this regard, it contributes to the design of a 7.5 kW DC-DC converter for the industrial partner (Schaffler and As

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5

Demirkutlu, Eyyup. "Output Voltage Control Of A Four-leg Inverter Based Three-phase Ups By Means Of Stationary Frame Resonant Filter Banks." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608151/index.pdf.

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A method for high performance output voltage control of a four-leg inverter based three-phase transformerless UPS is proposed. Voltage control loop is employed and the method employs stationary frame resonant filter controllers for the fundamental and harmonic frequency components. A capacitor current feedback loop provides active damping and enhances the output voltage dynamic performance. The controller design and implementation details are given. Linear and nonlinear loads for balanced and unbalanced load operating conditions are considered. The steadystate and dynamic performance of the UP

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6

Straka, Martin. "Výpočtové modelování vysokofrekvenčního hluku v kabině letounu EV-55M." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230560.

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This thesis describes methods of high frequency noise and vibrations computation of cabin part of EV–55M (aircraft developed by Evektor Kunovice). There is a brief summary of methods used for determining high frequency noise and vibrations in the first part of the thesis. Detailed explanation is given for Statistical Energy Analysis (SEA) which is nowadays the most dominant method in this area. The energy balance equation is derived in this chapter and SEA parameters such as modal density, damping loss factor, coupling loss factor and power input are introduced here. Next part deals with main

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7

Pereira, Fernando Silva. "Reconfiguração ótima de sistemas de distribuição de energia elétrica baseado no comportamento de colônias de formigas." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18154/tde-28042010-151514/.

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O objetivo deste trabalho é apresentar uma nova abordagem para obtenção de configurações para sistemas de distribuição de energia elétrica com o intuito de minimizar o valor de perdas ativas sem violar as restrições operacionais. Para isso, considera-se que os sistemas de distribuição estão operando em regime permanente e que suas fases estão equilibradas e simétricas, podendo o sistema ser representado por um diagrama unifilar. A reconfiguração é feita de forma a redistribuir os fluxos de corrente nas linhas, transferindo cargas entre os alimentadores e melhorando o perfil de tensão ao longo

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8

Hanna, Nohra Antoine. "Commande de filtres actifs parallèles sur un réseau fortement perturbé." Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/17708/1/hanna-nohra.pdf.

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L’alimentation de charges non linéaires par une source d’alimentation, dans un réseau électrique, est fréquemment soumise à des perturbations et/ou déséquilibres du courant d’alimentation reçu par la charge. Les perturbations du courant d’alimentation désignent la présence d’harmoniques dans le courant d’alimentation, celui-ci n’étant alors pas sinusoïdal, ainsi que la présence d’une puissance réactive trop importante circulant sur le réseau. Les déséquilibres du courant d’alimentation se traduisent, dans un réseau polyphasé, par une mauvaise répartition des courants d’alimentation dans les di

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9

Ramírez, Escobar Carlos Arturo. "LOS PRECIOS DEL MERCADO MAYORISTA DE ELECTRICIDAD COMO EXPRESIÓN DE LA PARTICIPACIÓN ACTIVA DE LA DEMANDA: APLICACIÓN DE LA ECONOMÍA EXPERIMENTAL." Doctoral thesis, Universitat Politècnica de València, 2012. http://hdl.handle.net/10251/16806.

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Introducción y objetivos: El estudio de las alteraciones de precios por fuera del equilibrio competitivo ha llevado a concluir que los mercados eléctricos actuales poseen fallos e imperfecciones originada spor diferentes causas que, teóricamente, podrían ser controladas mediante la participación activa de la demanda. El principal objetivo de esta tesis es demostrar experimentalmente, que la participación activa de la demanda eleva el autocontrol de los mercados mayoristas de electricidad y contribuye a mitigar las imperfecciones de los mercados, a la vez que abre nuevas posibilidades de gesti

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10

Morales, Morales Ernesto. "Empoderamiento y transformación de las relaciones de poder. Un análisis crítico de los procesos institucionales de participación ciudadana." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/400078.

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La presente es una tesis doctoral por compendio de publicaciones que tiene como objetivo conocer si los procesos institucionales de participación ciudadana —aquellos que la Administración promueve— pueden contribuir al empoderamiento de la ciudadanía y a la transformación de las relaciones de poder. Para ello, a través de cuatro artículos, se muestran los resultados de una investigación fundamentada en los estudios de caso de dos experiencias consolidadas y de largo recorrido, los Presupuestos Participativos de Porto Alegre en Brasil y los Planes de Desarrollo Comunitario de Barcelona en Españ

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11

Charité, Maxime. "Excès de pouvoir législatif et excès de pouvoir administratif : Etude comparée de l'office des juges constitutionnel et administratif français." Thesis, Orléans, 2019. http://www.theses.fr/2019ORLE0001.

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En France, le contentieux des normes générales se décline aujourd’hui en deux ensembles principaux, le recours pour excès de pouvoir dirigé contre les actes réglementaires et le contrôle de constitutionnalité des lois. Partageant un certain nombre de propriétés, ces derniers s’analysent non seulement comme des « contentieux objectifs », mais également comme des « contentieux d’annulation ». C’est ainsi qu’afin d’accomplir leur office, les juges constitutionnel et administratif français doivent tous les deux, d’abord, établir un rapport de norme à norme, puis, le cas échéant, annuler l’acte jur

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12

Oplatková, Hana. "Žiju tarot." Master's thesis, Vysoké učení technické v Brně. Fakulta výtvarných umění, 2012. http://www.nusl.cz/ntk/nusl-232344.

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Private deck of cards created during six-month survey and documentation of daily experiences. The package contains 49 cards and it is inspired by a set of 78 tarot cards. Text content - reverse side of the card was created using diary notes. Face side of the card was chosen as a representation of processes taking place usually in days when the card was read.

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13

Shi, Kai-Wei, and 施凱崴. "Research and design of semi-active synchronized switch on power harvesting and power loss." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/81987577128768774364.

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碩士<br>國立臺灣大學<br>應用力學研究所<br>98<br>Piezoelectric generator is a combination of cantilever beam and piezoelectric thin slip. The property of piezoelectric material has two basic characteristics, which are Direct Piezoelectric Effect and Converse Piezoelectric Effect. Direct piezoelectric effect turns mechanical energy into electric energy. Direct piezoelectric effect is being applied in Power Harvesting technology. Combined with piezoelectric generator, semi-active power harvesting circuitry is adopted to raise the output power harvested. There are two basic circuitry configurations adopted in se

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14

Boake, Ian Gordon. "Loss models for dynamic filters, compensating non-active power in electric networks." Thesis, 2014. http://hdl.handle.net/10210/9103.

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M.Ing. (Electrical & Electronic Engineering)<br>The emphasis is currently. on improving the performance and operational costs of compensators rather than finding new topologies. In the light of improving the operational costs of a compensator, a thorough knowledge of the losses in the compensator is required. This thesis analyses the losses in two commonly used compensators : the static VAR compensator (SVC) and the dynamic compensator. The dynamic compensator is then further subdivided into voltage-fed (VFC) and current-fed (CFC) dynamic compensator categories. Two processes are employed in t

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15

Agbugba, Emmanuel Emenike. "Hybridization of particle Swarm Optimization with Bat Algorithm for optimal reactive power dispatch." Diss., 2017. http://hdl.handle.net/10500/23630.

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This research presents a Hybrid Particle Swarm Optimization with Bat Algorithm (HPSOBA) based approach to solve Optimal Reactive Power Dispatch (ORPD) problem. The primary objective of this project is minimization of the active power transmission losses by optimally setting the control variables within their limits and at the same time making sure that the equality and inequality constraints are not violated. Particle Swarm Optimization (PSO) and Bat Algorithm (BA) algorithms which are nature-inspired algorithms have become potential options to solving very difficult optimization problem

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