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Dissertations / Theses on the topic 'Feeder capacity'

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1

Jayasekara, Manathum Nadeeshani Pushpamala. "Intelligent control of PV co-located storage for feeder capacity optimization." Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/1415.

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Battery energy storage is identified as a strong enabler and a core element of the next generation grid. However, at present the widespread deployment of storage is constrained by the concerns that surround the techno-economic viability. This thesis addresses this issue through optimal integration of storage to improve the efficiency of the electricity grid. A holistic approach to optimal integration includes the development of methodologies for optimal siting, sizing and dispatch coordination of storage.
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Mansour, Osama Mohammed Abbas Aly. "Determining the Power and Energy Capacity of a Battery Energy Storage System Utilizing a Smoothing Feeder Profile to Accommodate High Photovoltaic Penetration on a Distribution Feeder." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/3177.

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Electricity is a perishable commodity; once it is generated it needs to be consumed or stored. Electric energy storage provides both power and energy capacity. Power capacity applications reduce the need for generation, while energy capacity allows for energy consumption to be decoupled from generation. Previous research was done to develop an algorithm for determining the power (MW) and energy (MWh) capacities of a battery energy storage system (BESS) to mitigate the adverse impacts of high levels of photovoltaic (PV) generation. The algorithm used a flat feeder profile, and its performance w
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Jain, Akshay Kumar. "Enhancing PV Hosting Capacity of Distribution Feeders using Voltage Profile Design." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/82481.

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Distribution feeders form the last leg of the bulk power system and have the responsibility of providing reliable power to the customers. These feeders experience voltage drops due to a combination of feeder length, load distribution, and other factors. Traditionally, voltage drop was a major concern. Now, due to an ever-increasing PV penetration, overvoltage has also become a major concern. This limits the amount of solar PV that may be integrated. Few solutions exist to improve the voltage profile, where the most common is the use of voltage control devices like shunt capacitors and voltag
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Reynolds, Scott (Robert Scott) Carleton University Dissertation Computer Science. "Bounds on the interpolation capacity of feed-forward neural networks." Ottawa, 1993.

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Savachkin, Aliaksei. "Capacity dynamics of feed-forward, flow-matching networks exposed to random disruptions." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4380.

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While lean manufacturing has greatly improved the efficiency of production operations, it has left US enterprises in an increasingly risky environment. Causes of manufacturing disruptions continue to multiply, and today, seemingly minor disruptions can cause cascading sequences of capacity losses. Historically, enterprises have lacked viable tools for addressing operational volatility. As a result, each year US companies forfeit billions of dollars to unpredictable capacity disruptions and insurance premiums. In this dissertation we develop a number of stochastic models that capture the dynami
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Mazaika, Rosemary 1964. "Desert bighorn sheep and nutritional carrying capacity in Pusch Ridge Wilderness, Arizona." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/276964.

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The number of desert bighorn sheep (Ovis canadensis mexicana) in Pusch Ridge Wilderness (PRW), Santa Catalina Mountains, Arizona has declined to between 50 and 100 animals. Sheep have restricted movements to the southwest corner of PRW. I developed a model based on nitrogen (N) content of forage and forage quantity to measure seasonal changes in nutritional carrying capacity of sheep use areas in PRW. Forage based estimates of animals numbers were greater for April to September than for October to March. My study suggests that forage is not limiting desert bighorn sheep in PRW and illustrates
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Horton, Jonathan F. "Dynamic responses of a 20-ton capacity feed buoy in an open ocean environment." Restricted access (UM), 2008. http://libraries.maine.edu/gateway/oroauth.asp?file=orono/etheses/37803141.pdf.

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These (M.S.)--University of New Hampshire, 2008.<br>Title from PDF title page. Available through UMI ProQuest Digital Dissertations. Includes bibliographical references (leaves 58-59). Also issued in print.
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Almalki, Mishrari Metab. "CLASSIFICATION OF HIGH IMPEDANCE FAULTS, INCIPIENT FAULTS AND CIRCUIT BREAKER RESTRIKES DURING CAPACITOR BANK DE-ENERGIZATION IN RADIAL DISTRIBUTION FEEDERS." OpenSIUC, 2018. https://opensiuc.lib.siu.edu/dissertations/1524.

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Monitoring of abnormal events in a distribution feeder by using a single technique is a challenging task. Many abnormal events can cause unsafe operation, including a high impedance fault (HIF) caused by a downed conductor touch ground surface, an incipient fault (IF) caused by partial breakdown to a cable insulation, and a circuit breaker (CB) malfunction due to capacitor bank de-energization to cause current restrikes. These abnormal events are not detectable by conventional protection schemes. In this dissertation, a new technique to identify distribution feeder events is proposed based on
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Fletcher, John D. "The role of dietary cation-anion difference (DCAD) on the blood buffering capacity and the susceptibility of dairy cattle to induced ketoacidosis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0035/MQ64353.pdf.

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Saracoglu, Mehmet. "FROTH FLOTATION PERFORMANCE ENHANCEMENT BY FEED CAVITATION AND MAGNETIC PLASTIC PARTICLE ADDITION." UKnowledge, 2013. http://uknowledge.uky.edu/mng_etds/9.

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Froth flotation is the most commonly used process to recover and upgrade the portion of the coal preparation plant feed that has a particle size smaller than 150 microns. Problems that occur when employing froth flotation in the coal industry include i) coal surfaces that are weakly-to-moderately hydrophobic, and ii) flotation systems that are overloaded and limited by insufficient retention time. Research was performed to evaluate techniques that could be implemented to improve flotation performance under the aforementioned scenarios. Pre-aeration of flotation feed using a cavitation system w
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Здобицький, Андрій Ярославович, Андрей Ярославич Здобицкий та A. Y. Zdobytskiy. "Розробка стаціонарного обгортача рулонів сінажу і обґрунтування його технічно-технологічних параметрів". Thesis, Тернопільський національний технічний університет ім. Івана Пулюя, 2013. http://elartu.tntu.edu.ua/handle/123456789/2392.

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Робота виконана у Львівському національному аграрному університеті Мініс-терства аграрної політики та продовольства України.Захист відбувся „_17_” _жовтня_ 2013 р. на засіданні спеціалізованої вченої ра-ди Д 58.052.02 у Тернопільському національному технічному університету іме-ні Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Руська, 56, ауд. 79. З дисертацією можна ознайомитись у бібліотеці Тернопільського національного технічного університету імені Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Руська, 56.<br>Дисертацію присвячено питанням підвищення
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Chia-WeiHsieh and 謝家偉. "Existence Confirmation of Photovoltaic Generation Systems and Feeder Hosting Capacity Analysis." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/ub93rd.

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博士<br>國立成功大學<br>電機工程學系<br>103<br>The development on renewable sources and green technology is increasingly concerned. The customers are highly encouraged to install solar power generation and wind power equipment, anticipating reducing the dependence on fossil fuels and decreasing the amount of carbon emissions. However, because most of limited capacities of distributed generation (DG) equipment are privately owned, it has caused difficultly for utility maintenance personnel to be aware of such equipment operation and positions. It illuminates that if a detection technique can be thoroughly de
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Ning-Chung, Tang, and 唐寧蓴. "A Stochastic Approach for Determining PV Hosting Capacity in a Distribution Feeder." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/92245681368538156536.

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碩士<br>國立中正大學<br>電機工程研究所<br>104<br>The integration of distributed energy resources (DERs), especially solar photovoltaics (PV), has been gaining place in the past decade, making solar the fastest growing renewable energy source. A high PV penetration can potentially lead to voltage issues, thermal stress, and system harmonics. Additionally, the variability in power generation due to PVs can affect system controls, resulting in capacitors switching and regulators tap changing frequently, and further deteriorate the equipment and increase the system losses. In other words, with adoption of solar
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GOUR, RITIKA. "LIMITED CAPACITY DYNAMIC VOLTAGE RESTORER FOR VOLTAGE REGULATION IN RADIAL DISTRIBUTION FEEDER." Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/15000.

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The distribution system is one of most important and critical part of power system. The variation in the voltage at load end is of great concern in the distribution system. The voltage is required to be kept regulated within a specified range in the distribution system. Series compensation is technically more suitable solution for regulating the voltage in the radial distribution feeder when compared with shunt compensators. Two vital factors which decide the quality of compensation are the location of series compensation device and the rating of the device. The optimum location of device can
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Kuo, Yih-Der, and 郭奕德. "Voltage analysis of a distribution feeder connected a large total capacity of renewable energies." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/51786384339803455442.

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碩士<br>中原大學<br>電機工程研究所<br>105<br>Traditional energy will be gradually replaced by renewable energy because of climate change and the rising of environmental protection consciousness. Renewable energy would never be exhausted, however it will impact the system stability while it is connected to the power grid. Because of the technology development of renewable energy, the cost of renewable energy is decreased. This situation increases the penetration of renewable energy and also increases the impact on power grid. To avoid the serious impact on power grid, the power companies all established sta
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CHEN, KUN-HUI, and 陳昆輝. "Exploring Voltage Variation and Installation Capacity of PV Generation Connection with Feeder Line of Substation." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/93598470240728044108.

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碩士<br>南榮科技大學<br>工程科技研究所碩士班<br>104<br>Connecting renewable generation with the power distribution feeder lines will cause voltage jump which will worsen the power distribution quality, in order to keep the supply power quality. Nevertheless, the renewable generation connection is one of the evaluation items in power distribution system and it is normally simulated by static state according to “Renewable Energy Generation in Parallel Technical Rules”. This static simulation proceeds without the consideration of solar radiation variation and whole-day household load change. In this paper, a dynam
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Cai, Yi-Da, and 蔡宜達. "Evaluation of Maximum Allowable Capacity of Distributed Generation Interconnected to a Normally Closed-Loop Distribution Feeder." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/3c3xh4.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>95<br>This thesis assesses the possible maximum allowable capacity of distributed generation (DG) interconnected to a normally closed loop feeder. The impacts of DG on the voltage variation at point of common coupling (PCC) under normal and abnormal operating conditions were analyzed. Under the same voltage variation requirements, the maximum allowable interconnection capacities are quite different for various operating conditions. None of them are suitable for determining the maximum allowable interconnection capacity for a normally closed loop feeder. Therefore, a
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Wang, Pi Zhong, and 王丕忠. "Feeder reconfiguration and capacitor switching." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/23913666361038171642.

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Liu, Kuei-Yu, and 劉桂宇. "Analysis of the PV Hosting Capacity for Distribution Feeders." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/f9xsc3.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>106<br>Renewable energy is an inexhaustible resource. In the world, it has been advocating energy saving and cutting carbon dioxide. Therefore, the scale of renewable energy development has been increasing day by day. However, Taiwan is suitable for development solar energy owing to sufficient sunshine. With the government actively promoting photovoltaic system construction and expanding its development in recent years, it has become an important alternative energy in Taiwan. In order to investigate the maximum hosting capacity of distribution solar photovoltaic syst
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TING, CHU-HUAN, and 丁楚桓. "Hosting Capacity Analysis for Photovoltaic Systems on Distribution Feeders." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/qwjm95.

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碩士<br>國立高雄應用科技大學<br>電機工程系博碩士班<br>106<br>With the development of interface software, the network topology of distribution feeder can be generated with the system data of line segments and bus to support the impact analysis of renewable energy systems such as system voltage variation. To assist the distribution system operation for feeders with distributed generation ( DG ), the impact for the control of photovoltaic ( PV ) smart inverters and grid enhancement to mitigate the voltage violation is analyzed for the control strategy of DG systems to mitigate the impact of renewable energy integrati
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Lee, Chu-Sheng, and 李居昇. "Optimal Feeder Reconfiguration and Capacitor placement in Distribution Systems." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/50769298380031204307.

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博士<br>國立中正大學<br>電機工程研究所<br>91<br>ABSTRACT This dissertation aims to introduce and explore methods for feeder reconfiguration and capacitor placement of distribution systems. Hopefully, this study can benefit automation management control of distribution systems. Mathematically, feeder reconfiguration and capacitor placement are optimization problems, in which an objective function must be optimized subject to certain constraints. Techniques such as simulated annealing (SA), genetic algorithm (GA), and mixed-integer hybrid differential evolution (MIHDE) are employed to solve those op
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Lee, Hsueh Yin, and 李雪銀. "Practical shunt capacitor planning of distribution feeders." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/89515220710024885196.

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碩士<br>國立中山大學<br>電機工程研究所<br>82<br>A more precision model of three-phase power system network was developed to discuss the systematic optimal capacitor placement problem in practical unbalanced feeders,both mutual coupling effect and phase bus were considered in the three- phase load flow.Besides,the planning of shunt capacitor include the summation of peak power cost,energy cost and capacitor cost to be the cost function and the limit of raising voltage under the secure condition to be the c
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Cheng, Ren-Fu, and 鄭仁福. "Genetic Algorithm and Simulated Annealing Combined to Feeder Capacitor Placement." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/96878222651581659038.

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碩士<br>國立臺北科技大學<br>電機工程系碩士班<br>89<br>Electric power system mainly consists of three parts , which are generation, transmission and distribution. Distribution system has the direct contact with the users ranging from crowded cities to remote countryside. The distribution system is complicated. Therefore, a good planning of distribution system will enhance the power quality and stability of the system. According to studies, the distribution level takes out 13% of the power generated by the generating level. The main reason of feeder losses is reactive current flow in the distribution l
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Wu, wen-tang, and 吳文堂. "Optimal Feeder Selection and Capacitor Placement for Distribution Systems Planning." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/60516713376482951436.

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碩士<br>國立中正大學<br>電機工程研究所<br>90<br>The goal of power distribution system planning is to satisfy the load growth and system load demand during the planning period. An optimal planning for a distribution system must have a minimum cost (initial investment cost and energy loss cost) meeting the constraints of facility capacities, voltage drops, and power balance. In this thesis, the optimal feeder type and capacitor size and location for a radial distribution system are to be determined which is a complex combinatorial optimization problem. A Hybrid Differential Evolution Simulated Annealing (HDESA
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Luo,Fu-Jin and 羅富錦. "Study on Capacitor Planing of Disribution Radial Feeders." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/4tj6g8.

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碩士<br>國立高雄應用科技大學<br>電機工程系博碩士班<br>106<br>This paper focuses on Taiwan Power Company’s actual distribution feeder system to formulate a capacitor placement plan, in order to reduce losses in distribution feeders, as well as to improve their voltage drop. The objective is to determine the allocations of capacitors and obtain their required capacitances. In addition to performing a three-phase load flow analysis of the effects of mutual coupling occurring between feeders, this paper also takes into account the effects of a feeder load model. The distribution lines of the Outage Mapping Management
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Ndou, Saymore Petros. "Prediction of gut capacity of weaner and finishing pigs using physicochemical measurements of bulkiness of fibrous feeds." Thesis, 2012. http://hdl.handle.net/10413/10152.

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Physicochemical properties of different fibrous ingredients were used to determine the influence of feed bulk on voluntary feed intake and gut capacity in weaner and finishing pigs. Physicochemical measures of bulkiness determined on feed ingredients were DM, crude protein (CP), ether extract, ash, water holding capacity (WHC), bulk density, crude fibre (CF), neutral detergent fibre (NDF) and acid detergent fibre (ADF). Among the fibre sources, maize stover had the highest WHC, followed by veld grass, then lucerne hay, maize cob, sunflower husks, groundnut haulms, rice bran and saw dust. The g
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TAI, YU-HSUAN, and 戴育玄. "Optimization-Based Stochastic Analysis Method for PV Hosting Capacity Assessment on Distribution Feeders." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/k85gux.

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碩士<br>國立中正大學<br>電機工程研究所<br>107<br>Driven by various energy policies and incentives, renewable energy has gradually increased its penetration in power systems among many countries, which can reduce the utilization of traditional fossil fuel power generation and promote the sustainable development of the environment. In recent years, solar photovoltaic (PV) power generation has become one of the mainstreams in many renewable energy types due to its development in technology and the significant reduction in installation costs. However, with the increasing integration of solar power into the distr
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Wu, Jiun-De, and 吳俊德. "Optimal Capacitor Planning of Distribution Feeders Using Immune Algorithm." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/15810911893588407219.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>94<br>Power System consists of generation, transmission and distribution systems to deliver the power service to customers. Distribution systems cover a very wide area with components such as main transformers, primary feeders, laterals, distribution transformers, low tension lines and meters. All these components contribute distribution line loss to deteriorate system operation efficiency. With the power system deregulation and Kyoto Protocol, it becomes an important issue for utility companies to achieve loss minimization by various strategies. The objective of t
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邱天基. "Optimum size and location of shunt capacitor on distribution feeders." Thesis, 1986. http://ndltd.ncl.edu.tw/handle/77136542025099273050.

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Chen, Kan-Sheng, and 陳侃聲. "Optimal Capacitor and Wind Energy Conversion System Planning of Distribution Feeders." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/88780822898203342390.

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碩士<br>南台科技大學<br>電機工程系<br>95<br>The objective of this thesis is to derive an optimal location and operating strategy of capacitor banks and wind energy conversion systems (WECS) installed at the distribution feeder to reduce system power loss. The objective function is formulated by including feeder peak power loss, daily energy loss and capacitor installation cost. In addition, the voltage profiles of the feeder buses and the power factors of the WECS are considered as constraints. The immune algorithm (IA) is applied to solve the optimization problem by representing the objective function and
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(9895361), JE Mayer. "Investigation of voltage quality and distribution capacity issues on long rural distribution feeders and SWER systems." Thesis, 2009. https://figshare.com/articles/thesis/Investigation_of_voltage_quality_and_distribution_capacity_issues_on_long_rural_distribution_feeders_and_SWER_systems/13457702.

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Single Wire Earth Return (SWER) electric distribution feeders are used extensively in remote parts of Queensland and other states, as an economic means to deliver electrical energy to small customer loads, scattered sparsely over vast areas. These SWER systems are normally supplied from very long three-phase distribution feeders. Due to recent strong load growth, voltage quality issues have arisen in these systems. The main SWER feeder problem is poor voltage regulation caused by increasing loads. Three-phase feeder problems include voltage unbalance and phase angle unbalance caused by in
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YANG, CHE-WEI, and 楊哲維. "Impact of Moving Cloud Shadows on PV Output and Hosting Capacity Assessment Using Stochastic Approach for Distribution Feeders." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/4ubcq3.

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碩士<br>國立中正大學<br>電機工程研究所<br>107<br>This thesis presents a moving cloud shadows model to evaluate PVs’ impacts on voltage quality due to cloud shadows movement over high-penetration PVs in a distribution system. After cloud shadows simulation is done, the study uses stochastic approach to increase the PV hosting capacity of the system. The model built is incorporated with EPRI Open Distribution System Simulator (OpenDSS or DSS) to estimate voltage fluctuations on distribution system feeders. After OpenDSS simulation is performed, the graphical user interface developed by Matlab Graphic User Inte
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Yi-ChienShen and 沈以謙. "Non-Electrolytic Capacitor LED Driver with Feed-Forward control." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/ye5e8y.

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碩士<br>國立成功大學<br>電機工程學系<br>102<br>In this thesis, a non-electrolytic capacitor LED driver with feed-forward control is proposed. It includes an AC-DC PFC converter and a DC-DC LLC resonant converter. Typically, the output of the AC-DC converter is a DC bus voltage with 120 Hz ripple, and this ripple will cause high current ripple on the LED load. Therefore, the electrolytic capacitor (E-cap) is used to reduce the output current ripple. But the use of the E-cap will lead to the shorter lifetime of the lighting system. In this thesis, an analog feed-forward control is proposed to reduce the outpu
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Johnston, Peter W. "Grazing Capacity of Native Pastures in the Mulga Lands of South-Western Queensland: A Modelling Approach." Thesis, 1996. http://era.daf.qld.gov.au/id/eprint/9034/.

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Grazing capacities for individual sheep properties were estimated and related to sustainable levels of pasture utilisation through the measurement of key plant processes and the extrapolation o f these over time and space. Measurements o f forage production from dominant land systems in south-west Queensland Australia were used to calibrate the GRASP forage production model. This model uses daily climatic records and links a soil water balance to forage growth via a water use efficiency (transpiration) characteristic for each forage. From short term, point observations of forage growth, histo
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Lin, Zih Han, and 林資翰. "A Robust Optimization Approach to Solar Power Installation Capacity under Feed-in Tariff Policy: A Case of Taiwan Enterprises." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/2dtvag.

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碩士<br>國立清華大學<br>工業工程與工程管理學系<br>104<br>Solar power is a renewable energy that has a potential for development. The government of Taiwan has implemented a policy to subsidize individuals installing solar photovoltaic (PV) systems through financial assistance and buy-back assurance (e.g., the feed-in tariff scheme). Installing solar PV systems is considered economical because it enables people to make profit. In addition, using such system has environmental benefits because it reduces carbon emissions. This study aims to assist installers evaluate the profitability and potential risks of this lon
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Oliveira, Margarida Ramalho Almeida. "The effect of feed-in tariffs on the deployment of renewable energies." Master's thesis, 2020. http://hdl.handle.net/10071/21157.

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This study intends to evaluate the relationship between the use of feed-in tariffs and the deployment of renewable energies. We collected a sample of 28 EU countries for the period 1990-2017. Following a panel data approach, we performed a random effects estimation. Among the several explanatory variables, feed-in tariffs, discriminated by different renewable energies’ technologies, are defined as the variables of interest in explaining the share of the electricity capacity generated by non-hydro renewable sources. The results suggest that only Wind and Waste impact the dependent variable a
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Tedela, Tenaw Hailu. "Analytical study on the appraisal of communal land use management practices and policies towards climate resilience and sustainability in Bir-Temicha Watershed of the Upper Blue Nile Basin, Ethiopia." Thesis, 2017. http://hdl.handle.net/10500/23351.

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This study was aimed at analysing communal land use management practices and policies towards sustainability and climate resilience. The objectives of this study were to assess rainfall variability, climate change impact, adaptation practices and impediment factors for adaptation on the one hand and, on the other, analysing the pressure, scrutinising the sustainability of institutional practices, and assessing policy setting and its application status in managing communal lands. To conduct the study, a household survey, key informant interviews and group discussions were used. It employ
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Letsoalo, Ngoako Lucas. "Rangeland management practices among emerging livestock farmers in Gauteng province, South Africa." Diss., 2019. http://hdl.handle.net/10500/25597.

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In South Africa, communal and/or emerging farmers’ rangeland condition and grazing capacities deteriorate, because grazing capacity is usually over-estimated due to lack of knowledge on veld and livestock production system by the farmers. Woody plants has encroached in the arid and semi-arid savannas and grasslands biomes many parts of world, including in southern Africa. This causes challenges to farm owners due to its negative effects on the herbaceous plant material, which offers a substantial part of forage for livestock production. Although the consequences of deteriorating rangeland cond
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