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Electromechanical Dynamics Of High Photovoltaic Power Grids, Shutang You

Doctoral Dissertations

This dissertation study focuses on the impact of high PV penetration on power grid electromechanical dynamics. Several major aspects of power grid electromechanical dynamics are studied under high PV penetration, including frequency response and control, inter-area oscillations, transient rotor angle stability and electromechanical wave propagation.To obtain dynamic models that can reasonably represent future power systems, Chapter One studies the co-optimization of generation and transmission with large-scale wind and solar. The stochastic nature of renewables is considered in the formulation of mixed-integer programming model. Chapter Two presents the development procedures of high PV model and investigates the impact of high PV …

Dynamic Response Analysis Of Micro-Grid With Ocean Thermal Energy Conversion, Chia-Yu Hsu, Ming-Wang Chen, Pei-Hwa Huang

Journal of Marine Science and Technology

The main purpose of this paper is to analyze the dynamic responses of micro-grid with Ocean Thermal Energy Conversion (OTEC) system. The power sources of the studied micro-grid system include an OTEC generator and a wind generator. Three different types of OTEC generation systems, i.e., open-cycle, closed-cycle, and hybrid-cycle, are considered, under the conditions with the same temperature of sea water and output of generator. When the system operates in an islanding or gridconnected mode, the responses subject to load variation are quite different. As the system operates in the grid-connected mode, the voltage and frequency are less affected by …

Investigating The Sustainability Of Southeastern United States' Wood Pellet Production For Use In European Biopower Facilities, Esther Sullivan Parish

Doctoral Dissertations

Although transition to renewable energy resources like bioenergy is being promoted as a way to mitigate global climate change, it is not always clear what potential tradeoffs stakeholders might encounter as these new energy resources reach commercial scale. Holistic consideration of a variety of potential effects on environmental and socioeconomic factors valued by human societies will be an essential component of meeting the world’s energy needs without compromising the quality of life available to future generations. This dissertation is therefore intended to advance understanding of the potential benefits and tradeoffs associated with the production of industrial wood pellets from Southeastern …

Factors Of Renewable Energy Deployment And Empirical Studies Of United States Wind Energy, Serife Elif Can Sener

All Dissertations

Considered essential for countries' development, energy demand is growing worldwide. Unlike conventional sources, the use of renewable energy sources has multiple benefits, including increased energy security, sustainable economic growth, and pollution reduction, in particular greenhouse gas emissions. Nevertheless, there is a considerable difference in the share of renewable energy sources in national energy portfolios. This dissertation contains a series of studies to provide an outlook on the existing renewable energy deployment literature and empirically identify the factors of wind energy generation capacity and wind energy policy diffusion in the U.S. The dissertation begins with a systematic literature review to identify …

Renewable Energy-Aware Routing In The Internet, Ziyang Liu

Theses

The increasing power consumption of the Internet infrastructure has attracted a lot of world-wide attention because of the severe impact on the environment. Many research works have started to search for solutions of how to reduce the energy consumption in data networks. Other works have considered that generation of electricity from fossil-based fuel emits greenhouse gases into the atmosphere, which leads to global warming. Consequently, another approach for sustainable networks is the utilization of renewable energy to power the infrastructure.

This thesis introduces a new backbone Internet routing protocol that performs routing considering the different renewable energy availability at various …

Beneficial Disruption: Vermont's Renewable Energy Standard And The Need For Innovative Utility Regulation In The 21st Century, Darren Springer

William & Mary Environmental Law and Policy Review

No abstract provided.

Renewable, Ethical? Assessing The Energy Justice Potential Of Renewable Electricity, Aparajita Banerjee, Emily Prehoda, Roman Sidortsov, Chelsea Schelly

Chelsea Schelly

Energy justice is increasingly being used as a framework to conceptualize the impacts of energy decision making in more holistic ways and to consider the social implications in terms of existing ethical values. Similarly, renewable energy technologies are increasingly being promoted for their environmental and social benefits. However, little work has been done to systematically examine the extent to which, in what ways and in what contexts, renewable energy technologies can contribute to achieving energy justice. This paper assesses the potential of renewable electricity technologies to address energy justice in various global contexts via a systematic review of existing studies …

A Decision Support Tool For Building Integrated Renewable Energy Microgrids Connected To A Smart Grid, Damilola A. Asaleye, Michael D. Murphy, Michael Breen

Publications

The objective of this study was to create a tool that will enable renewable energy microgrid (REμG) facility users to make informed decisions on the utilization of electrical power output from a building integrated REμG connected to a smart grid. A decision support tool for renewable energy microgrids (DSTREM) capable of predicting photovoltaic array and wind turbine power outputs was developed. The tool simulated users’ daily electricity consumption costs, avoided CO₂ emissions and incurred monetary income relative to the usage of the building integrated REμG connected to the national electricity smart grid. DSTREM forecasted climate variables, which were used …

Hardware Based Testing Of Communication Based Control For Dc Microgrid, Mahmoud Saleh, Yusef Esa, Ahmed Mohamed

Publications and Research

This paper further describes our work presented in Industry Application Society 2016 Conference, with more details related to the control and operation of the microgrid. The DC microgrid facility was custom designed and implemented at CCNY with minimal off-the-shelf components to enable flexibility and reconfiguration capability. The design steps, requirements, and experimental results of the developed testbed were discussed. As a case study, a central controller for energy management algorithm was developed and tested under several operational scenarios. The experimental results verify the applicability of the developed testbed for validating DC microgrid controllers.

Multi-Mw Solar Pv Pumping System With Capacity Modulation And Battery Voltage Support, Oluwaseun M. Akeyo, Vandana Rallabandi, Dan M. Ionel

Power and Energy Institute of Kentucky Faculty Publications

Solar photovoltaic (PV) renewable energy systems are undergoing major technological developments and large-scale field deployment and electric grid integration. This paper proposes a method of expanding the capacity of an existing irrigation farm with additional pumps powered by solar PV. The system includes PV arrays and battery energy storage connected to a common dc bus, which energizes an array of variable speed inverter driven pumps. Capacity modulation is achieved by energizing an optimal number of pumps required in order to meet a particular load demand with minimum supply energy. A grid connection to the dc bus of the power electronic …

Fighting The Wrong Fight: Why The Mlp Parity Act Is A Misguided Attempt At Achieving Renewable Energy Capital Raising Parity, David Powers

Sustainable Development Law & Policy

No abstract provided.

Study Of Modified Deposition Process For Cu(In,Ga)Se2 Solar Cell Back Contact, Tasnuva Ashrafee

Electrical & Computer Engineering Theses & Dissertations

As the worldwide demand for renewable energy is increasing, growth of the global share of alternative energy sources would improve overall energy security as well as bring environmental benefits. So far, solar cells - the devices that convert direct sunlight into electricity - are dominated by silicon devices. Another alternative is thin film solar cell, whose main inspiration is to reduce the electricity production cost. Cu(In, Ga)Se₂ (CIGS) solar cells are considered to have a great prospective because of reduced material and energy consumption during manufacturing. Many CIGS solar cell manufacturers are already exhibiting GW-scale production capacity. With the …

Renewable Capstone

Activities

In this capstone activity, we are going to look at the availability and economics of solar and wind power where you live. To do this, we are going to need maps of available sunshine provided by the U.S. government. We are also going to need to know the price of solar panels and wind turbines that are commercially available. Foremost, though, we are going to need to know how much electrical energy you use before we proceed to estimate the cost of using renewable energy. Finding out how much electrical energy we use is actually quite easy. All that one …

A Shift In The Winds: What The Outer Continental Shelf Renewable Energy Program And The Dismantling Of The Minerals Management Service Mean For Offshore Energy, Jeffrey C. Cartmell

Oklahoma Journal of Law and Technology

No abstract provided.

Solar Stove, Julia Strange (Interior Design), Alaina Mcihenney (Physicians Assistant), Zachary Quain (Industrial Design), Adam Beauchner (Industrial Design), Irene Ghattas (Occupational Therapy)

Nexus Maximus

PEOPLE'S CHOICE AWARD WINNER!

We designed a solar powered hot plate that also functions as a light source. This allows refugees to cook food without burning wood or using toxic fuels and provides a portable light source.

Nexus Maximus IV

The Challenge: Innovation for Refugees and Displaced Populations

One of the great challenges of our time is how to help refugees and displaced populations, and how to prevent the causes in the first place. Every minute, 24 people around the world are forced to flee their homes. That’s 34,000 people a day who leave everything behind in the hope of …

Characterization Of Catalysts For Hydrodeoxygenation Of Bio-Oils Using Phenol As A Model Compound, Abdulazeez Mohammed Khlewee

Electronic Theses and Dissertations

Due to the environmental considerations, depletion of fossil fuel reserves and fluctuating non-renewable fuel price, converting non-edible lignocellulosic biomass into renewable energy resources has gained significant importance. Phenol has been chosen as a model compound for catalytic screening because it is abundant in bio-oil composition and shows a high resistance to oxygen removal during hydrodeoxygenation (HDO) reactions. HDO of phenol produces chemicals that can be used as transportation fuels (Aromatics) or fuel additives. Theoretically, HDO of phenol has two distinct reduction pathways: direct deoxygenation (DDO) and hydrogenation (HYD). The previous results published by our group showed a precedent activity and …

Renewable, Ethical? Assessing The Energy Justice Potential Of Renewable Electricity, Aparajita Banerjee, Emily Prehoda, Roman Sidortsov, Chelsea Schelly

Department of Social Sciences Publications

Energy justice is increasingly being used as a framework to conceptualize the impacts of energy decision making in more holistic ways and to consider the social implications in terms of existing ethical values. Similarly, renewable energy technologies are increasingly being promoted for their environmental and social benefits. However, little work has been done to systematically examine the extent to which, in what ways and in what contexts, renewable energy technologies can contribute to achieving energy justice. This paper assesses the potential of renewable electricity technologies to address energy justice in various global contexts via a systematic review of existing studies …

Interannual Variability And Seasonal Predictability Of Wind And Solar Resources, Nir Krakauer, Daniel S. Cohen

Publications and Research

Solar and wind resources available for power generation are subject to variability due to meteorological factors. Here, we use a new global climate reanalysis product, Version 2 of the NASA Modern-Era Retrospective Analysis for Research and Applications (MERRA-2), to quantify interannual variability of monthly-mean solar and wind resource from 1980 to 2016 at a resolution of about 0.5 degrees. We find an average coefficient of variation (CV) of 11% for monthly-mean solar radiation and 8% for wind speed. Mean CVs were about 25% greater over ocean than over land and, for land areas, were greatest at high latitude. The correlation …

Modeling The Economic And Environmental Performance Of Offshore Wind Energy, Alexana Cranmer

Doctoral Dissertations

Offshore wind is a growing source of energy globally. Like any energy technology, it has impacts on the environment. In the case of renewable energy, we need a way to consider the environmental benefits as well as the environmental costs. This dissertation develops a set of models to examine the economic and environmental costs and benefits and the trade-offs between them. We ask how much offshore wind energy should be sited, and where should that offshore wind energy be located? The first model estimates the economic impact of wake interactions between wind farms. Wind farm sites are chosen through a …

The Long-Term Effect Of State Renewable Energy Incentive Programs, Fred Bower

Journal of Environmental and Resource Economics at Colby

Abstract: Renewable energy is praised for its environmental benefits and long run energy savings, however, for the average consumer, the up-front cost of this infrastructure deters investment. On the Federal and state level, incentive programs have been implemented to break down these initial barriers and give easier access to renewable energy. Studies have shown that these incentive programs have been successful at the consumer level (Crago, 2014). What policy makers and government officials should maybe be more concerned with though, is the long-term effect of these programs. This paper will analyze the long-term effect of renewable energy incentive programs beyond …

Evaluation Of A Proposal For Reliable Low-Cost Grid Power With 100% Wind, Water, And Solar, Christopher T.M. Clack, Staffan A. Qvist, Jay Apt, Morgan Bazilian, Adam R. Brandt, Ken Caldeira, Steven J. Davis, Victor Diakov, Mark A. Handschy, Paul D.H. Hines, Paulina Jaramillo, Daniel M. Kammen, Jane C.S. Long, M. Granger Morgan, Adam Reed, Varun Sivaram, James Sweeney, George R. Tynan, David G. Victor, John P. Weyant, Jay F. Whitacre

College of Engineering and Mathematical Sciences Faculty Publications

A number of analyses, meta-Analyses, and assessments, including those performed by the Intergovernmental Panel on Climate Change, the National Oceanic and Atmospheric Administration, the National Renewable Energy Laboratory, and the International Energy Agency, have concluded that deployment of a diverse portfolio of clean energy technologies makes a transition to a low-carbon-emission energy system both more feasible and less costly than other pathways. In contrast, Jacobson et al. [Jacobson MZ, Delucchi MA, Cameron MA, Frew BA (2015) Proc Natl Acad Sci USA 112(49):15060-15065] argue that it is feasible to provide "low-cost solutions to the grid reliability problem with 100% penetration of …

Triboelectric Turbines: Design And Construction Of A Multi-Rotor Counter-Rotating Wind Turbine Utilizing Direct-Current Triboelectric Nanogenerators, Adam Forti

Honors Theses

Direct-current triboelectric nanogenerators (DC-TENG) harness the friction generated between dissimilar rotating materials and convert it to useable electrical power. One of the many potential applications of this technology is in small scale renewable energy. A wind turbine was designed in which multiple DC-TENG generators would be attached to turbine blades of varying dimensions. This project involved the design and construction of several rotating DC-TENG prototypes, followed by measuring the electrical output of each nanogenerator at various rotational speeds.

Impact Of The Nuclear Phase-Out In Germany: Examining The Costs And Benefits Of Aggresive Energy Policy In Relation To A Sustainable Future, David M. Olio

Honors Theses

The German nuclear phase-out legislation of 2011 will cause substantial changes in the country's energy mix, energy generation and electricity grid demands. The phase-out exists as part of the Energiewende, or energy transition, occurring in Germany where renewable energy has been subsidized to replace the share of nuclear energy, which is decreasing annually and moving towards a complete phase-out in 2022. This paper will analyze the benefits and costs of Germany's decision to phase out nuclear power. First, it will explore the dynamic history of German energy policy and discuss how a history of anti-nuclear sentiments led to the nuclear …

Virtual Inertia: Current Trends And Future Directions, Ujjwol Tamraker, Dipesh Shrestha, Manisha Maharjan, Bishnu P. Bhattarai, Timothy M. Hansen, Reinaldo Tonkoski

Electrical Engineering and Computer Science Faculty Publications

The modern power system is progressing from a synchronous machine-based system towards an inverter-dominated system, with large-scale penetration of renewable energy sources (RESs) like wind and photovoltaics. RES units today represent a major share of the generation, and the traditional approach of integrating them as grid following units can lead to frequency instability. Many researchers have pointed towards using inverters with virtual inertia control algorithms so that they appear as synchronous generators to the grid, maintaining and enhancing system stability. This paper presents a literature review of the current state-of-the-art of virtual inertia implementation techniques, and explores potential research directions …

Regulating The Water-Energy-Food Nexus: Interdependencies, Transaction Costs And Procedural Justice, Shaun Larcom, Terry Van Gevelt

Research Collection College of Integrative Studies

There have been calls for an overhaul of regulatory and governance frameworks to incorporate the implications of the water-energy-food nexus. We map one small component of the regulatory space of the nexus and highlight its immense complexity. We draw on insights from the economics and socio-legal literatures to show that a decentralised approach to regulation based upon procedural justice can enable the trade-offs of the nexus to be considered and addressed. We use a nexus case study of micro hydro-electricity generation in Dartmoor National Park in England to show that when we take into account interactions between state and non-state …

Public Opinion On Renewable Energy: The Nexus Of Climate, Politics, And Economy, Shawn K. Olson-Hazboun

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This dissertation research examines the factors underlying public opinion toward renewable energy in the United States. U.S. citizens in general support the continued development of renewable energy, yet opposition has been widely observed toward a variety of renewable energy facilities at the local level. Previous research on public responses to renewable energy has focused on one or a small number of communities experiencing renewable energy development. In this research I examine public views more broadly, in communities with and without renewable energy development, and also using nationally representative opinion data. I ask the following questions:

What local experiences influence how …

Synthesis And Fundamental Property Studies Of Energy Material Under High Pressure., Meysam Akhtar

Electronic Theses and Dissertations

Recently, high-pressure science and technology has flourished and rapidly advanced to impact a wide domain of materials and physical sciences. One of the most substantial technological developments is the integration of samples at ultrahigh pressure with a wide range of in-situ probing techniques. Applications of extreme pressure have significantly enriched our understanding of the electronic, phonon, and doping effects on the newly emerged two-dimensional (2D) materials. Under high pressure, materials’ atomic volume radically decreases, and electronic density rises, which will lead to extraordinary chemical reaction kinetic and mechanisms. The promising capability of high pressure combine with the significance of novel …

Novel Iii-V Alloys For Unassisted Water Splitting., Alejandro Martinez-Garcia

Electronic Theses and Dissertations

Direct conversion of solar energy to fuels by photoelectrochemical (PEC) water splitting has been identified as a promising route for sustainable power generation and storage. However, semiconductor materials with suitable opto-electronic properties have yet to be identified. In this dissertation, band gap engineering of III-V alloys, tuning the light sensitivity of GaP and GaN nitride through alloying Sb, is investigated for developing new semiconductor alloys with appropriate opto-electronic properties and their performance with overall water photoelectrolysis. In addition to III-V materials, copper oxide (Cu₂O) electrode was investigated for p-type semiconductor material. The new III-V alloy anodes were studied …

Development And Degradation Analysis Of Novel Micro And Nanostructured Transition Metal Oxide (Tmo) Anodes For Aqueous Sodium Ion Batteries., Santanu Mukherjee

Electronic Theses and Dissertations

One of the primary motivations driving battery technology research is the need to develop cleaner and more efficient energy storage systems. The portable electronics industry has developed exponentially, especially over the last couple of decades and therefore the importance of efficient electrochemical energy storage systems cannot be overstated. Li-ion batteries have been the predominant rechargeable energy in use, however, they have their own particular drawbacks viz. flammability of the electrolyte, expensive mining of the Li metal etc. This is where the importance of Na-ion batteries lie. This research focuses on using existing transition metal oxides (TMOs) and tuning their crystal …

The Role Of Leadership In Adoption Of Waste-To-Energy (Wte) In Nigeria, Jahan Moghadam

Business Administration Dissertations

The use of Renewable Energy (RE) has considerably increased in the last several years. Innovative forms of sustainable alternative energy production, such as solar and wind, have now become recognized energy sources. Following suit, this paper has reviewed Waste-to-Energy (WtE), an innovative and evolving form of RE, and its possible adoption in Nigeria to address both the energy crisis and the pollution problem. The theoretical framework of this paper utilizes the genesis of Fishbein and Ajzen’s (1975) theory of reasoned action (TRA), expanding on renewable energy studies using TRA such as Bang, Ellinger, Hadimarcou, and Traichal (2000) Mishra, Akman, & …