Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 102 for “"power demand"”.
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Power-Demand Routing in massive geo-distributed systems
… both these areas of concern. We introduce Power-Demand Routing (PDR), a technique that redistributes traffic between replicas with the express purpose of spatially redistributing the system's power consumption, in order to reduce operating costs. Cost can be described in monetary terms or …
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Rowing Biomechanics: Technique Changes with an Increase of Power Demand
… rowing cycle but did not change with increasing power level. The transverse shoulder angle decreased (the upper back was less straight) as power level increased (R2=-0.69±19), suggesting that the scapula moved anterio-laterally. This may be that as it tired, the mid-trapezius was unable to hold …
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Modeling Daily Power Demand in Southern Kentucky: A Single Household Approach
… regression (LOESS), to forecast a 24 hour demand profile at the household level and compare it to existing aggregate demand models discussed in literature. Of these aggregate demand models, a quadratic autoregressive model was selected to be used as a basis for comparison with the LOESS …
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Proposta metodológica para avaliação da demanda residencial de energia elétrica através do desenvolvimento de uma curva de carga horária
The growing electricity demand combined with the emerging power generation technologies have increased the importance of electric power demand models for the electric planning. In that way, demand side management (DSM) measures are being used more often, in order to guarantee de safety and …
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Modeling and Control of Complex Stochastic Networks, With Applications to Manufacturing Systems and Electric Power Transmission Networks
For power transmission networks, we characterize the optimal amount of generation capacity to hold in reserve. The optimal solution indicates precisely how reserves must be adjusted according to environmental factors including the variability of power demand, and the ramping-rate constraints on …
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Power system balancing with high renewable penetration : the potential of demand response
This study investigated the ability of responsive demand to stabilize the electrical grid when intermittent renewable resources are present. The WILMAR stochastic unit commitment model was used to represent a version of the Danish electricity and heat system with an enhanced level of wind …
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Towards A Mobile Damping Robot For Vibration Reduction of Power Lines
As power demand across communities increases, focus has been given to the maintenance of power lines against harsh environments such as wind-induced vibration (WIV). Currently, Inspection robots are used for maintenance efforts while fixed tuned mass dampers (FTMDs) are used to prevent structural …
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Essays in Power System Economics
… we model the effects of forward contracting on power prices in wholesale electricity markets. In contrast to most of the previous literature, we explicitly model power retailers, and introduce risk aversion. As expected, increasing the number of players have pro-competitive effects on the spot …
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Power-Adaptive Computing in Future Energy Networks
… There is increasing pressure to move away from power generation from fossil fuels, both due to ecological concerns and fear of dependencies on scarce natural resources. Increasing the share of decentralized generation from renewable sources is a widely accepted way to a more sustainable power …
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Power Sharing and Power Quality Improvement in Parallel Connected Power Converters in the Microgrid
Power electronics-based Voltage Source Converters (VSCs) have been widely used as an interface between energy source and the grid/load in microgrid system. The VSCs are required not only to provide the basic function that achieves reliable and accurate power sharing in a microgrid, but also to …
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Development and implementation of a Multi-Agent Control System for the Rankine Cycler Laboratory Teaching System.
… in the near future is increased electric power demand coupled with greater efficiency requirements for power generation stations. Development of more robust control systems capable of supporting larger power plants with more adaptable control schemes is one solution to the problem. A …
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Integrated micro fuel cells with on-board hydride reactors and autonomous control schemes
Miniaturization of power generators to the MEMS scale, based on the hydrogen-air fuel cell, is the object of this research. The micro fuel cell approach has been adopted for advantages of both high power and energy densities. On-board hydrogen production/storage and an efficient control scheme that …
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Demand Led Tidal Lagoon Power and Hydrogen Energy Storage - Supervisory Control and Optimisation
… is intermittent leading to long periods of no power generation. A system consisting of electrolysers and compression produce hydrogen to storage, while fuel cells supplying power from that storage can bridge the intermittency to meet a continuous unpredictable power demand. This requires …
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Hybrid Electric Distributed Propulsion for Vertical Takeoff and Landing Aircraft
… between aerodynamics and hybridelectric power system (HEPS) design and control for vertical takeoff and landing (VTOL) aircraft applications. Specifically, this research focuses on embedded distributed electric propulsion systems, for which the aerodynamic forces and moments are …
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Power Infrastructure Requirements for Road Transport Electrification
… across a large proportion of road transport demand is needed to realise the benefits of an electrified transport sector. However, this is dependent on overcoming significant barriers. This study performs a systematic analysis of how proven power charging technologies could be used to unlock …
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An Agent-based Platform for Demand Response Implementation in Smart Buildings
… factors for the operation of a distribution power system. Taking into account customer demand and energy resource constraints, electric utilities not only need to provide reliable services but also need to operate a power grid as efficiently as possible. The objective of this dissertation is …
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Modeling the power requirements of a rotary feeding and cutting system
… and cutting system (RFCS) to identify the power demand of the RFCS with limited or no required field or laboratory data. Two separate RFCS were investigated, incorporated with either a low-speed cutting process (LSCP) or a high-speed cutting process (HSCP). The results from the laboratory …
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Modeling and Simulation of Large Scale Stirred Tank
… evaluate the structure of the flow field and the power demand of the agitator. The results from the numerical models were compared with empirical data collected from these pilot plants that had been operated at an earlier date.</p><p>Mixing is commonly used in a variety ways throughout industry to …
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A study of factors affecting electric soil sterilization
… and soil temperatures, watt-meter records of power demand, kilowatt hour records of power consumption, ammeter records of current, and summarized records of plant growth in various samples of standardized soil which received different treatments during sterilization. Comparative tests were run …
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2-D Coaxial Integration of Medium Voltage Power Electronics Enabled by Field-Driven Design
… adaptable, distributed, and efficient. Increased power demand from electrified transportation and multi-MW datacenters, in combination with higher generation volatility due to distributed energy resources continue to strain the electrical grid both domestically and abroad. Power electronics …
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