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Solar and wind sources coupled with energy storage as well as V2G units are promising options while pursuing 100% renewable power targets. V2G units are currently gaining prominence as global attention is shifting towards clean electrical power generation. In today's energy studies, V2G offers a promising role in pursuing a global clean power initiative. The batteries of the V2G can be charged (or...
This paper presents an energy core-ness based analysis of hybrid distributed energy systems to identify the most important or core nodes in the system. The proposed energy core-ness based analysis is used to compute a one-to-one relation between generation sources, storage nodes and loads, regardless of their distributed location in the system. Results indicate that the proposed energy core-ness analysis...
In this paper, the power consumption of present-day computing facilities which are based on Complementary Metal-Oxide Semiconductor Field Effect Transistor (CMOS) devices is compared with that of Josephson junction superconductor based computing facilities of the future. First, the amount of power used by present-day computing facilities was identified in different regions of the world. Then, the...
This paper presents the development of a fixed speed wind turbine emulator using the Real Time Digital Simulator (RTDS). The wind turbine emulator consists of a wind turbine modeled in an RSCAD software environment. The software model for the wind turbine generates appropriate torque signals based on wind speed profiles using auto-regressive moving average and perturbation methods. These torque signals...
The integration of distributed energy resources (DERs) into the power grid provides support for a significant share of the total power load and helps reduce transmission power losses. However, these advantages are not always guaranteed since the power profiles of DERs have high variability and the number of DERs is too many to control on an individual basis. In a hybrid energy system, these problems...
The third generation photovoltaic technology mandates high efficiency and low cost. Efficiency will increase when the absorber becomes capable of absorbing more photons, leading to formation of excitons in the absorber. The proposed GaP/InGaAs/InGaSb triple junction solar cell is designed to convert more incident photons to electricity, executing higher internal quantum efficiency (IQE), promoting...
This paper presents an optimal, real-time integration control mechanism for interconnecting hybrid energy sources into a virtual power plant. The implemented virtual power plant consists of distributed energy sources including ten solar panels providing 1 MW aggregate power, six wind turbines generating 9 MW aggregate power, and ten grid connected battery energy storage systems which support the overall...
The concept of electrical capacitance tomography (ECT) was used to characterize the flow of water in a pipe. The technique is based on measuring capacitances from multiple electrodes alongside the surface of the fluid-containing pipe and correlating the measured capacitances to identify changes which could pinpoint the exact location of air bubbles positioned in the pipe. This enables the characterization...
The wavelength dispersion of Verdet constant was evaluated for nanoparticulate hematite (α-Ferric Oxide) and maghemite (γ-Ferric Oxide) in poly-phenyl methyl vinyl siloxane after the nanoparticles were oriented using an external electric field. The experiment was carried out at wavelengths of 405 nm, 473 nm, 532 nm and 632.8 nm. The role of electric field based orientation of the nanoparticles in...
As Vehicle-to-Grid (V2G) concept convenes strong interests among automakers, electric utility owners, and policy makers, it is critical to investigate the potential impacts of V2G on the electric distribution system. Such study, together with other benefits of V2G, may encourage utility support for V2G commercialization. This paper focuses on a pressing technical issue associated with the penetration...
Matched filtering is a common method for analyzing known waveforms of interest. From analyzing images for target recognition, to identifying coding within a noisy transmission, matched filtering via cross correlation is commonly used. This paper presents an implementation for identifying impacts using an accelerometer and matched filtering via cross correlation. Matlab was used for proof of concept...
Sharing power assets between transportation and power system is the focus of V2G that can create a compelling new economics. Projected V2G penetration levels across utility customers are a promising clue that V2G may dominate the market in the near future. This will herald evolution of V2G parking lots. This paper describes mathematical model for estimating the electric power capacity of a V2G parking...
Transformer maintenance has evolved over the past few decades from an item of periodic expenditure to a strategic planning tool in the management of transmission and distribution systems. Some of the newer insulation diagnostic techniques like Polarization and Depolarization Current (PDC) are based on the measurement of dielectric response functions. PDC analysis is an onsite, offline, time-domain...
Current transformers are series devices used in power systems for measurement and protection purposes. Useful operational life of these devices is largely determined by the highest temperature seen by them during various loading conditions. In this paper, we describe a unique experimental setup designed to measure top-oil as well as hot-spot temperature profiles of a medium voltage current transformer...
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