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 81 for “"Electricity grid"”.
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Implementation of battery energy storage system for the electricity grid in Singapore
The market of grid-level electricity storage is growing rapidly, with a predicted market value of 1.6 billion in 2012 and 8.3 billion in 2016. Electrochemical storages such as lead-acid, nickel-cadmium, sodium-sulfur and lithium-ion batteries are candidates with high potential for grid-level …
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Analysis of tolerable capacity limits of intermittent photovoltaic power connected to the Namibian national electricity grid
Grid-connected photovoltaic (PV) systems are being utilized at an increasing level worldwide. Even though the increasing addition of intermittent PV power to the grid systems may lead to grid instability, PV systems feeding power into the Namibian electricity grid system are on the increase. The …
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Design and implementation of a software tool for day-ahead and real-time electricity grid optimal management at the residential level from a customer's perspective
… of a software tool able to achieve electricity grid optimal management in a dynamic pricing environment, at the residential level, and from a customer's perspective. The main drivers encouraging a development of energy management at the home level are analyzed, and a system …
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Harvesting energy from electric fields for powering wireless sensors within air-insulated substations
Aging equipment in the electricity grid requires close monitoring to ensure the safe operation of the network. The lack of reliable and cost effective ways for supplying power has hindered the large scale installation of wireless condition monitoring sensors in the electricity grid. Electric fields …
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Random Forest-based detection of cyber-attacks in substation automation systems in the context of IEC 61850 GOOSE communication protocol
The development of the Smart Grid aims to improve the operation of the traditional grid through the incorporation of information and communication technology. This is typically done through the integration of communication networks and a set of protocols that make the electricity grid prone to …
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Hydrogen storage of energy for small power supply systems
… wind resource, electrolyzer size, distance from electricity grid, price of diesel fuel, and electrolyzer and fuel cell cost. The model verified cell phone industry figures regarding the geographical conditions favorable to diesel genset use. Final results for wind-hydrogen systems suggest that …
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Managing impacts of hydrological droughts and heat waves on thermal power plants
… a vulnerability for individual power plants and electricity grids. Recent droughts and heat waves have highlighted the tension between thermal power plants and water resources, stimulating various research efforts. Prior research work has largely focused on long term energy infrastructure choices …
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A principle based system architecture framework applied for defining, modeling & designing next generation smart grid systems
… desire exists, throughout society, to consume electricity from clean and renewable energy sources, such as solar, wind, biomass, geothermal, and others. Due to the intermittent and variable nature of electricity from these sources, our current electricity grid is incapable of collecting, …
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Integrative Approach to Metal Extraction and Electrification
… between molten sulfide electrolysis and the electricity grid and the synergy between molten sulfide electrolysis and the minerals processing of copper concentrates. Discounted cash flow analysis is used to show the strength of molten sulfide electrolysis compared to traditional copper …
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Economic and Environmental Impacts of Plug-in Hybrids and Battery Electric Vehicles: A Comparative Analysis
… the life of the vehicles, using the US average electricity grid mix. Additionally, a lifecycle cost comparison was done to calculate the payback periods of PHEVs and BEVs when compared to a conventional gasoline vehicle. The analysis showed that the BEV has the lowest lifetime costs due to its …
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Investigating Environmentally Sustainable Pathways for Passenger Vehicle Fleet in the UK
… percentage of renewable energy sources in the electricity grid mix. The increased electricity demand and a growing vehicle fleet will entail greater energy investment and resource requirements to meet future targets. Strategies such as the uptake of shared mobility, to minimize the number of …
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The comparative economic assessment of the impacts of energy storage and demand response resource participation in the day-ahead electricity markets
Electricity is the prototypical just-in-time product due to the limited means to economically store it on a large-scale basis. As such, electricity must be consumed as soon as it is produced. In areas of the U.S. grid with competitive electricity markets, independent system operators (ISOs) run …
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A system dynamics modeling of incentive policies to increase electric vehicle adoption in Indonesia
… such as purchase subsidies, VAT reductions, electricity incentives, and infrastructure support, in accelerating EV adoption and reducing carbon emissions. The model consists of three interconnected subsystems: fiscal budget (APBN), EV adoption behavior, and carbon emission mitigation. …
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Electric vehicle powertrain design with battery swapping and vehicle to grid implementation.
… to enable advanced interface with the electric grid and address challenges in the adoption of EVs which include : Cost, range anxiety, charging time and charging infrastructure, battery state of health, and impacts of vehicle to grid (V2G) operations. The EV battery swapping system (BSS) …
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Electricity demand-side management for an energy efficient future in China : technology options and policy priorities
… options which achieve substantial reductions in electricity demand in China's Shandong Province. This research utilizes a scenario-based approach to identify sensible and feasible energy efficiency and load reduction strategies. The research consists of technical analyses through the development …
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Smart charging strategies for Electric Vehicles utilising non-dispatchable renewable electricity generation
… utilisation of these fuels - particularly for electricity generation and transportation - is simply not sustainable. Present-day electricity systems are built around the premise that generation is flexible and controllable, while load - generally speaking - is not. This leads to dispatch models …
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Reactive power potential: A contribution of hydropower for the Energy Transition
… presents significant <br/>challenges for the electricity grid, especially in terms of expanding the network and <br/>ensuring its reliability. <br/>This study explores the critical role of hydropower plants in stabilizing the energy <br/>system. In addition to generating renewable energy, …
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Optimal Scheduling of Power Plant Maintenance with Gas Portfolio
… they could also stabilize the gas network and electricity grid. The goal of this research is to build an applicable mathematical model for optimizing the maintenance scheduling as well as gas purchasing strategy. Firstly, a novel stochastic mathematical model is proposed for making production …
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Distinct roles for energy storage and transmission infrastructure in a renewables-based electric power system
… one of the main hurdles to realizing zero-carbon electricity generation. In this study, we analyze the roles of energy storage systems (ESS) and transmission infrastructure in the cost-optimal deployment of a renewable electricity grid in the United States. We find that storage and transmission …
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The effects of energy storage properties and forecast accuracy on mitigating variability in wind power generation
Electricity generation from wind power is increasing worldwide. Wind power can offset traditional fossil fuel generators which is beneficial to the environment. However, wind generation is unpredictable. Wind speeds have minute to minute variability which causes minute to minute generation to …
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