Relevant bibliographies by topics / Electric power production – Computer simulation

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
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Academic literature on the topic 'Electric power production – Computer simulation'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Electric power production – Computer simulation"

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Vera, David, Francisco Jurado, Bárbara de Mena, and Jesús C. Hernández. "A Distributed Generation Hybrid System for Electric Energy Boosting Fueled with Olive Industry Wastes." Energies 12, no. 3 (February 5, 2019): 500. http://dx.doi.org/10.3390/en12030500.

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This paper presents the theoretical model and the simulation of a cutting edge hybrid power system composed of an externally-fired gas turbine (EFGT) coupled with an organic Rankine cycle (ORC) as a bottoming unit for the maximization of electrical power. The power plant is fed with different biomass sources from olive industry wastes (pruning, dry pomace, stones, leaves and twigs), providing more than 550 kW of electric power and a net electrical efficiency of 26.0%. These wastes were burnt directly at atmospheric pressure in an EFGT, producing 400 kW of electric power and exhaust gases at 300 °C. Ten suitable ORC working fluids have been studied to maximize the electric power generation: cyclohexane, isohexane, pentane, isopentane, neopentane, R113, R245fa, R365mfc, R1233zd and methanol. The best fluid was R1233zd, reaching 152.4 kW and 22.1% of ORC thermal efficiency; as drawback, however, R1233zd was not suitable for Combined Heat and Power CHP applications due its lower condensation temperature. Thus, despite R113 gave minor electricity production (137.5 kW) this allowed to generate additional thermal power (506.8 kW) in the way of hot water at 45 °C.
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Uimonen, Semen, and Matti Lehtonen. "Simulation of Electric Vehicle Charging Stations Load Profiles in Office Buildings Based on Occupancy Data." Energies 13, no. 21 (October 31, 2020): 5700. http://dx.doi.org/10.3390/en13215700.

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Transportation vehicles are a large contributor of the carbon dioxide emissions to the atmosphere. Electric Vehicles (EVs) are a promising solution to reduce the CO2 emissions which, however, requires the right electric power production mix for the largest impact. The increase in the electric power consumption caused by the EV charging demand could be matched by the growing share of Renewable Energy Sources (RES) in the power production. EVs are becoming a popular sustainable mean of transportation and the expansion of EV units due to the stochastic nature of charging behavior and increasing share of RES creates additional challenges to the stability in the power systems. Modeling of EV charging fleets allows understanding EV charging capacity and demand response (DR) potential of EV in the power systems. This article focuses on modeling of daily EV charging profiles for buildings with various number of chargers and daily events. The article presents a modeling approach based on the charger occupancy data from the local charging sites. The approach allows one to simulate load profiles and to find how many chargers are necessary to suffice the approximate demand of EV charging from the traffic characteristics, such as arrival time, duration of charging, and maximum charging power. Additionally, to better understand the potential impact of demand response, the modeling approach allows one to compare charging profiles, while adjusting the maximum power consumption of chargers.
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Guggeri, Andrés, and Martín Draper. "Large Eddy Simuation of an Onshore Wind Farm with the Actuator Line Model Including Wind Turbine’s Control Below and Above Rated Wind Speed." Energies 12, no. 18 (September 11, 2019): 3508. http://dx.doi.org/10.3390/en12183508.

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As the size of wind turbines increases and their hub heights become higher, which partially explains the vertiginous increase of wind power worldwide in the last decade, the interaction of wind turbines with the atmospheric boundary layer (ABL) and between each other is becoming more complex. There are different approaches to model and compute the aerodynamic loads, and hence the power production, on wind turbines subject to ABL inflow conditions ranging from the classical Blade Element Momentum (BEM) method to Computational Fluid Dynamic (CFD) approaches. Also, modern multi-MW wind turbines have a torque controller and a collective pitch controller to manage power output, particularly in maximizing power production or when it is required to down-regulate their production. In this work the results of a validated numerical method, based on a Large Eddy Simulation-Actuator Line Model framework, was applied to simulate a real 7.7 MNW onshore wind farm on Uruguay under different wind conditions, and hence operational situations are shown with the aim to assess the capability of this approach to model actual wind farm dynamics. A description of the implementation of these controllers in the CFD solver Caffa3d, presenting the methodology applied to obtain the controller parameters, is included. For validation, the simulation results were compared with 1 Hz data obtained from the Supervisory Control and Data Acquisition System of the wind farm, focusing on the temporal evolution of the following variables: Wind velocity, rotor angular speed, pitch angle, and electric power. In addition to this, simulations applying active power control at the wind turbine level are presented under different de-rate signals, both constant and time-varying, and were subject to different wind speed profiles and wind directions where there was interaction between wind turbines and their wakes.
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Colantoni, Andrea, Mauro Villarini, Vera Marcantonio, Francesco Gallucci, and Massimo Cecchini. "Performance Analysis of a Small-Scale ORC Trigeneration System Powered by the Combustion of Olive Pomace." Energies 12, no. 12 (June 14, 2019): 2279. http://dx.doi.org/10.3390/en12122279.

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The utilisation of low- and medium-temperature energy allows to reduce the energy shortage and environmental pollution problems because low-grade energy is plentiful in nature and renewable as well. In the past two decades, thanks to its feasibility and reliability, the organic Rankine cycle (ORC) has received great attention. The present work is focused on a small-scale (7.5 kW nominal electric power) combined cooling, heating and power ORC system powered by the combustion of olive pomace obtained as a by-product in the olive oil production process from an olive farm situated in the central part of Italy. The analysis of the employment of this energy system is based on experimental data and Aspen Plus simulation, including biomass and combustion tests, biomass availability and energy production analysis, Combined Cooling Heat and Power (CCHP) system sizing and assessment. Different low environmental impact working fluids and various operative process parameters were investigated. Olive pomace has been demonstrated to be suitable for the energy application and, in this case, to be able to satisfy the energy consumption of the same olive farm with the option of responding to further energy users. Global electrical efficiency varied from 12.7% to 19.4%, depending on the organic fluid used and the working pressure at the steam generator.
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Bogdanov, I. I. I., J. A. A. Torres, H. A. A. Akhlaghi, and A. M. M. Kamp. "The Influence of Salt Concentration in Injected Water on Low-Frequency Electrical-Heating-Assisted Bitumen Recovery." SPE Journal 16, no. 03 (March 22, 2011): 548–58. http://dx.doi.org/10.2118/129909-pa.

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Summary Steam injection is often not a good alternative for oil recovery from shallow bitumen reservoirs. For instance, the thin caprock creates the danger of steam breakthrough. For deeper reservoirs, the heat losses from injection wells may be prohibitive. A technology that may be better suited is oil recovery aided by low-frequency electrical heating of the reservoir. This technology, well known for environmental remedial applications, has been field tried recently, yielding promising results. The process uses electric conductivity of connate water to propagate an alternating current between electrodes, inducing the Joule heating of the reservoir. An associated problem is the appearance of hot spots around the electrodes that may be relieved by water circulation. However, the water circulation may have a significant effect on the heating process because the electric conductivity of the circulated water depends on its salt content. To find out the influence of salt concentration on process efficiency, we have studied the process of salt-water recirculation around an electrode using numerical simulation. The physical properties and operational data for Athabasca bitumen have been collected from the literature. The model built with Computer Modelling Group's STARS simulator and tested first with available analytical solutions has been validated, and the proper choice of the underlying grid and numerical tuning parameters has been verified. The process was also simulated at field scale for a common pattern of electrodes and production wells. The salt penetrated into the reservoir, far beyond the major water-circulation zone around the electrodes. This process increases the electric conductivity in a large region between electrodes, which improves the heating of the reservoir. The single-electrode simulation studies using different tools yielded similar results for a simple problem. More-complex (and more-realistic) field-scale simulations show that adding salt enhances the oil production. In practice, an upper concentration limit may be given by corrosion problems at the electrodes. The reservoir simulation of bitumen recovery assisted by low-frequency heating is a challenging multiphysics problem. The understanding of the influence of salt concentration on the circulated water provided by this work is an important key in process-design considerations.
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Arias, Ignacio, Eduardo Zarza, Loreto Valenzuela, Manuel Pérez-García, José Alfonso Romero Ramos, and Rodrigo Escobar. "Modeling and Hourly Time-Scale Characterization of the Main Energy Parameters of Parabolic-Trough Solar Thermal Power Plants Using a Simplified Quasi-Dynamic Model." Energies 14, no. 1 (January 4, 2021): 221. http://dx.doi.org/10.3390/en14010221.

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A simplified mathematical model of parabolic-trough solar thermal power plants, which allow one to carry out an energetic characterization of the main thermal parameters that influence the solar field performance, was evaluated through a comparison of simulation results. Two geographical locations were selected to evaluate the mathematical model proposed in this work—one in each hemisphere—and design considerations according with the practical/operational experience were taken. Furthermore, independent simulations were performed using the System Advisor Model (SAM) software, their results were compared with those obtained by the simplified model. According with the above, the mathematical model allows one to carry out simulations with a high degree of flexibility and adaptability, in which the equations that allow the plant to be energetically characterized are composed of a series of logical conditions that help identify boundary conditions between dawn and sunset, direct normal irradiance transients, and when the thermal energy storage system must compensate the solar field energy deficits to maintain the full load operation of the plant. Due to the above, the developed model allows one to obtain satisfactory simulation results; referring to the net electric power production, this model provides results in both hemispheres with a relative percentage error in the range of [0.28–8.38%] compared with the results obtained with the SAM, with mean square values of 4.57% and 4.21% for sites 1 and 2, respectively.
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González-Acevedo, Hernando, Yecid Muñoz-Maldonado, Adalberto Ospino-Castro, Julian Serrano, Anthony Atencio, and Cristian Jaimes Saavedra. "Design and performance evaluation of a solar tracking panel of single axis in Colombia." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 4 (August 1, 2021): 2889. http://dx.doi.org/10.11591/ijece.v11i4.pp2889-2898.

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This paper presents the mechanical design of a single axis solar tracking system, as well as the electronic design of a system that to record in real time the electric power delivered by the solar tracker and to evaluate its performance. The interface was developed in Labview and it compares the power supplied by the tracker with the power supplied by static solar panel of the same characteristics. The performance is initially simulated using Pv-Syst software, and later validated with the data obtained by the interface. As a result, the use of the solar tracker increases the power delivered by a minimum of 19%, and it can go as high as 47.84%, with an average in increase in power of 19.5% in the monthly energy production. This experimental result was compared with the simulation by Pv-Syst software and shows a difference of only 2.5%, thus validating the reliability of the simulation. This behavior pattern coincides with previous studies carried out for equatorial latitudes.
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Qawaqzeh, Mohamed Zaidan, Oleksandr Miroshnyk, Taras Shchur, Robert Kasner, Adam Idzikowski, Weronika Kruszelnicka, Andrzej Tomporowski, et al. "Research of Emergency Modes of Wind Power Plants Using Computer Simulation." Energies 14, no. 16 (August 6, 2021): 4780. http://dx.doi.org/10.3390/en14164780.

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The aim of this study is to investigate changes in the wind power plant energy production parameters under the conditions of sudden wind changes and voltage drop. To achieve these goals, a simulation of operation of wind power plants was performed. Twelve wind turbines with variable rotational speed equipped with a Fuhrländer FL 2500/104 asynchronous double-fed induction generator (DFIG) were used, each with an installed capacity of 2.5 MW. A general scheme of a wind power plant has been developed using a modular-trunk power distribution scheme. The system consists of wind power modules and a central substation, which allows total power to be supplied to the power system at a voltage of 35 kV. The central substation uses two high voltage switchgears. Four modules were used, each of them consisting of three wind turbines, with a power of 7.5 MW. The simulation of the wind turbines was performed in the MATLAB® Simulink® software environment. The mode of response of the turbines to a change in wind speed, a voltage drop in the 35 kV voltage system, and a one-phase short circuit to the ground in the system of 10.5 kV voltage was explored. The results show that a sudden voltage drop and the appearance of short circuits influence the wind power plant (WPP) operation in a different way independent of regulation mode. The power generation from WPP will be limited when voltage drop occurred for both AC and Voltage regulation mode and during short circuits while WPP is set on AC regulation mode.
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Trota, Ferreira, Gomes, Cabral, and Kallberg. "Power Production Estimates from Geothermal Resources by Means of Small-Size Compact Climeon Heat Power Converters: Case Studies from Portugal (Sete Cidades, Azores and Longroiva Spa, Mainland)." Energies 12, no. 14 (July 23, 2019): 2838. http://dx.doi.org/10.3390/en12142838.

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Renewable forms of energy are increasingly penetrating the electricity market, particularly, geothermal energy. A wide range of resource temperatures and fluid quality are converted mostly using traditional binary power plants and, recently, using Climeon modular units. Portuguese natural geothermal resources are far from precise estimations. Despite the parameter uncertainties, electric power resource estimations of two natural geothermal reservoirs are presented: a volcanic sourced heated high-enthalpy geothermal reservoir in Sete Cidades, São Miguel Island, Azores; and a low-enthalpy geothermal reservoir linked to a fractured zone in a granitic setting in Longroiva, in the northern part of the Portuguese mainland. Based on the volumetric method, we assessed the power potential of geothermal resources in Sete Cidades and Longroiva using a probabilistic methodology—Monte Carlo simulation. The average reserve estimations for Climeon module were 5.66 MWe and 0.64 MWe for Sete Cidades and Longroiva, respectively. This figure was by far higher when compared to traditional binary technology; those differences were mostly attributed to distinct conversions efficiency factors.
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Boretti, Albert, Stefania Castelletto, and Sarim Al-Zubaidy. "Concentrating solar power tower technology: present status and outlook." Nonlinear Engineering 8, no. 1 (January 28, 2019): 10–31. http://dx.doi.org/10.1515/nleng-2017-0171.

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Abstract The paper examines design and operating data of current concentrated solar power (CSP) solar tower (ST) plants. The study includes CSP with or without boost by combustion of natural gas (NG), and with or without thermal energy storage (TES). Latest, actual specific costs per installed capacity are high, 6,085 $/kW for Ivanpah Solar Electric Generating System (ISEGS) with no TES, and 9,227 $/kW for Crescent Dunes with TES. Actual production of electricity is low and less than the expected. Actual capacity factors are 22% for ISEGS, despite combustion of a significant amount of NG exceeding the planned values, and 13% for Crescent Dunes. The design values were 33% and 52%. The study then reviews the proposed technology updates to improve ratio of solar field power to electric power, capacity factor, matching of production and demand, plant’s cost, reliability and life span of plant’s components. Key areas of progress are found in materials and manufacturing processes, design of solar field and receiver, receiver and power block fluids, power cycle parameters, optimal management of daily and seasonal operation of the plant, new TES concepts, integration of solar plant with thermal desalination or combined cycle gas turbine (CCGT) installations and specialization of project.
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Dissertations / Theses on the topic "Electric power production – Computer simulation"

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Nguyen, Duy Huu Manh. "Analysing electricity markets with evolutionary computation." University of Western Australia. School of Electrical, Electronic and Computer Engineering, 2002. http://theses.library.uwa.edu.au/adt-WU2003.0018.

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The use of electricity in 21st century living has been firmly established throughout most of the world, correspondingly the infrastructure for production and delivery of electricity to consumers has matured and stabilised. However, due to recent technical and environmental–political developments, the electricity infrastructure worldwide is undergoing major restructuring. The forces driving this reorganisation are a complex interplay of technical, environmental, economic and political factors. The general trend of the reorganisation is a dis–aggregation of the previously integrated functions of generation, transmission and distribution, together with the establishment of competitive markets, primarily in generation, to replace previous regulated monopolistic utilities. To ensure reliable and cost effective electricity supply to consumers it is necessary to have an accurate picture of the expected generation in terms of the spatial and temporal distribution of prices and volumes. Previously this information was obtained by the regulated utility using technical studies such as centrally planned unit–commitment and economic–dispatch. However, in the new deregulated market environment such studies have diminished applicability and limited accuracy since generation assets are generally autonomous and subject to market forces. With generation outcomes governed by market mechanisms, to have an accurate picture of expected generation in the new electricity supply industry, it is necessary to complement traditional studies with new studies of market equilibrium and stability. Models and solution methods have been developed and refined for many markets, however they cannot be directly applied to the generation market due to the unique nature of electricity, having high inelastic demand, low storage capability and distinct transportation requirements. Intensive effort is underway to formulate solutions and models that specifically reflect the unique characteristics of the generation market. Various models have been proposed including game theory, stochastic and agent–based systems. Similarly there is a diverse range of solution methods including, Monte–Carlo simulations, linear–complimentary and quadratic programming. These approaches have varying degrees of generality, robustness and accuracy, some being better in certain aspects but weaker in others. This thesis formulates a new general model for the generation market based on the Cournot game, it makes no conjectures about producers’ behaviour and assumes that all electricity produced is immediately consumed. The new formulation characterises producers purely by their cost curves, which is only required to be piece–wise differentiable, and allows consumers’ characteristics to remain unspecified. The formulation can determine dynamic equilibrium and multiple equilibria of markets with single and multiple consumers and producers. Additionally stability concepts for the new market equilibrium is also developed to provide discrimination for dynamic equilibrium and to enable the structural stability of the market to be assessed. Solutions of the new formulation are evaluated by the use of evolutionary computation, which is a guided stochastic search paradigm that mimics the operation of biological evolution to iteratively produce a population of solutions. Evolutionary computation is employed as it is adept at finding multiple solutions for underconstrained systems, such as that of the new market formulation. Various enhancements to significantly improve the performance of the algorithms and simplify its application are developed. The concept of convergence potential of a population is introduced together with a system for the controlled extraction of such potential to accelerate the algorithm’s convergence and improve its accuracy and robustness. A new constraint handling technique for linear constraints that preserves the solution’s diversity is also presented together with a coevolutionary solution method for the multiple consumers and producers market. To illustrate the new electricity market formulation and its evolutionary computation solution methods, the equilibrium and stability of a test market with one consumer and thirteen thermal generators with valve point losses is examined. The case of a multiple consumer market is not simulated, though the formulation and solution methods for this case is included. The market solutions obtained not only confirms previous findings thus validating the new approach, but also includes new results yet to be verified by future studies. Techniques for market designers, regulators and other system planners in utilising the new market solutions are also given. In summary, the market formulation and solution method developed shows great promise in determining expected generation in a deregulated environment.
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Silva, Thayze D'Martin Costa da 1988. "Princípio do equivalente certo no planejamento da operação de sistemas hidrotérmicos." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259879.

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Orientadores: Secundino Soares Filho, Mônica de Souza Zambelli
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
Made available in DSpace on 2018-08-25T07:16:16Z (GMT). No. of bitstreams: 1 Silva_ThayzeD'MartinCostada_M.pdf: 9346773 bytes, checksum: 73c504aef1611f22af50cead8deff7bf (MD5) Previous issue date: 2014
Resumo: O Princípio do Equivalente Certo (PEC) garante que as abordagens determinística e estocástica são equivalentes na otimização de sistemas dinâmicos estocásticos quando satisfeitas certas condições. É possível que o problema de planejamento da operação energética (POE) se aproxime de satisfazer as condições do PEC, apesar de não atendê-las teoricamente. Assim, o objetivo desta dissertação é analisar a validade do PEC no âmbito da Programação Dinâmica aplicado ao POE de sistemas hidrotérmicos constituídos de um único reservatório e avaliar o impacto da violação de cada condição. As hipóteses do PEC foram analisadas progressivamente por meio da comparação dos resultados dos modelos considerados, desde o ideal que atende teoricamente às condições, até o mais próximo da realidade. Foram observadas diferenças pouco significativas entre as políticas de operação determinística e estocástica, indicando que o modelo de POE se aproxima de atender às condições do PEC. Uma consequência imediata deste estudo seria que a abordagem determinística do problema de POE para sistemas hidrotérmicos com um único reservatório pode ser tão eficaz quanto as abordagens estocásticas
Abstract: Certainty Equivalence Principle (CEP) ensures that deterministic and stochastic approaches are equivalent in stochastic dynamic systems optimization when some assumptions hold. It is possible that Long Term Hydrothermal Scheduling (LTHS) problem is close to attaining CEP¿s assumptions, although it does not attain them theoretically. Thus, the objective of this dissertation is to analyze the validity of CEP in Dynamic Programming framework applied to single reservoir LTHS problem and to evaluate the impacts of each CEP¿s condition violation. The CEP¿s conditions were progressive analyzed by comparison of the considered models results from an ideal case where theoretically assumptions hold until a case study closer to reality. Slight differences were observed between deterministic and stochastic operation policies, indicating that LTHS model is close to attain the CEP¿s conditions. An immediate consequence of this study would be that deterministic approach for the single reservoir LTHS problem can be as effective as stochastic ones
Mestrado
Energia Eletrica
Mestra em Engenharia Elétrica
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Smith, William Corbett. "Analysis of variances in electric power system simulation for production cost." Ohio : Ohio University, 1991. http://www.ohiolink.edu/etd/view.cgi?ohiou1173467167.

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Feng, Xiaoming. "On the probabilistic production simulation of electric power systems using equivalent load duration curve methods." Ohio : Ohio University, 1990. http://www.ohiolink.edu/etd/view.cgi?ohiou1172779312.

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Zaag, Nader. "Fast simulation of cascading outages with islanding." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112588.

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This thesis proposes an efficient power system simulator to estimate the automatic sequence of events that follow a fault contingency leading to islanding and cascading outages. The simulator is based on a quasi-steady state model that includes island identification, under-frequency load shedding, over-frequency generator tripping, and island load flow. Contingencies can include the outage of generators, loads, or transmission lines. Often times, a fault of one or two of these power system elements can lead to many cascaded outages and system islanding. The simulator utilizes an innovative method that analyzes the null space of the DC load flow susceptance matrix to identify system islands after each disturbance. Once system islands have been determined, each island power imbalance is calculated and the simulator determines based on the power imbalance in each island whether any load shedding, generator tripping, or primary frequency regulation is required. Once these corrective actions are completed each island will either have been found to balance power or will experience blackout. In the islands that have balanced power, a load flow is computed to see if all line flow constraints are satisfied. Any lines with flow constraint violations are faulted, and the iterative process is repeated under all line flow constraints are satisfied.
The results demonstrate the ability of the simulator to quickly and efficiently predict a system's response to contingencies leading to cascading outages and islanding. Simulations were conducted on a 10-bus 13-line network, a 24-bus 38-line network, and a 72-bus 119-line network.
This thesis also examined the highly complex mixed-integer linear problem of identifying the optimum initial outage in the sense that it would cause the maximum amount of load shedding through islanding. The results on a three-line, three-bus test properly identified the line whose initial outage caused overflows leading to system separation and maximum loss of load.
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Parikh, Rajiv D. "PC based simulation software package for an uninterruptable power supply." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-11242009-020238/.

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Atkinson-Hope, Gary. "An integrated programme for power systems simulation using personal computers (PC's)." Thesis, Cape Technikon, 1993. http://hdl.handle.net/20.500.11838/1147.

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Thesis (Masters Diploma (Technology)--Cape Technikon, Cape Town, 1993
The research objectives were to: Formulate a training structure covering conventional power systems topics; Research existing PC based power systems software resources; Develop a structure for a PC based power systems course; Research the capabilities of the software resources chosen; Develop a structure for a modern PC based power systems course taking into account the capabilities and limitations of the selected software programs; Develop for the PC based power systems course, task orientated computer based laboratory set-ups. The set-ups provide: An introduction into the topics concerned; An explanation of the usage of each program applied, where usage means an explanation of the Input and Output Data of each program; User friendly simulation experiments. These set-ups, together with software programs and a personal computer integrate into a training programme and realize a power systems simulation course.
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Arès, Jean-Michel. "A knowledge-based model and simulator for alarm and protection systems of power networks /." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63921.

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Arata, John Paul III. "Simulation and control strategy development of power-split hybrid-electric vehicles." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42790.

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Power-split hybrid-electric vehicles (HEVs) provide two power paths between the internal combustion (IC) engine and the driven wheels through gearing and electric machines (EMs) composing an electrically variable transmission (EVT). EVTs allow IC engine control such that rotational speed is independent of vehicle speed at all times. By breaking the rigid mechanical connection between the IC engine and the driven wheels, EVTs allow the IC engine to operate in the most efficient region of its characteristic brake specific fuel consumption (BSFC) map. If the most efficient IC engine operating point produces more power than is requested by the driver, the excess IC engine power can be stored in the energy storage system (ESS) and used later. Conversely, if the most efficient IC engine operating point does not meet the power request of the driver, the ESS delivers the difference to the wheels through the EMs. Therefore with an intelligent supervisory control strategy, power-split architectures can advantageously combine traditional series and parallel power paths. In the first part of this work, two different power-split HEV powertrains are compared using a two-term cost function and steady-state backward-looking simulation (BLS). BLS is used to find battery power management strategies that result in minimized fuel consumption over a user-defined drive-cycle. The supervisory control strategy design approach amounts to an exhaustive search over all kinematically admissible input operating points, leading to a minimized instantaneous cost function. While the approach provides a valuable comparison of two architectures, non-ideal engine speed fluctuations result. Therefore, in the second part of the work, two approaches for designing control strategies with refined IC engine speed transitions are investigated using high-fidelity forward-looking simulation (FLS). These two approaches include: i) smoothing the two-term cost function optimization results, and ii) introducing a three-term cost function. It is found that both achieve operable engine speed transitions, and result in fuel economy (FE) estimates which compare well to previous BLS results. It is further found that the three-term cost function finds more efficient operating points than the smoothed two-term cost function approach. From the investigations carried out in parts one and two of this work, a two-phase control strategy development process is suggested where control strategies are generated using efficient steady-state BLS models, and then further tested and verified in high-fidelity FLS models. In conclusion, the FLS results justify the efficacy of the two-phased process, suggesting rapid and effective development of implementable power-split HEV supervisory control strategies.
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Remy, Ghislain. "Commande optimisée d'un actionneur linéaire synchrone pour un axe de positionnement rapide." Phd thesis, Paris, ENSAM, 2007. http://tel.archives-ouvertes.fr/tel-00281529.

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Les moteurs linéaires sont devenus des composants incontournables dans le domaine de la conception des machines de production. L'actionneur synchrone à aimants permanents (PMLSM) constitue le principal composant et permet aujourd'hui d'obtenir des performances nettement supérieures à celles de son homologue rotatif accouplé à un système de transformation de mouvement. Cependant, pour utiliser ces constituants de façon optimale, il est nécessaire de prendre en compte dans la commande les spécificités de ce type d'actionneur. En effet, des phénomènes électriques et magnétiques, tels que les forces électromotrices non-sinusoïdales, la saturation des inductances et les forces de détente, génèrent des forces ondulantes perturbatrices pour la partie mécanique. L'objectif de cette étude est donc, dans un premier temps, d'améliorer la modélisation de ces moteurs linéaires en vue de leur commande. Des méthodes analytiques et éléments-finis sont utilisées pour quantifier l'importance de ces phénomènes sur la force de poussée. Puis, dans une deuxième partie, nous définissons les structures de commande optimales permettant de prendre en compte les phénomènes retenus. Le formalisme du Graphe Informationnel Causal (GIC), développé par le laboratoire L2EP, est utilisé pour représenter et définir de façon systématique les structures de commande retenues. Les méthodologies d'inversion du GIC sont détaillées pour permettre la définition des structures de commande en Boucles Fermées et Non-Fermées. Les structures classiques de commande industrielles sont analysées et de nouvelles structures de commande sont proposées pour la commande en force d'un moteur linéaire LMD10-050 de la société ETEL.
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Books on the topic "Electric power production – Computer simulation"

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Xuemin, Zhang, Cao Ming, and SpringerLink (Online service), eds. Power Grid Complexity. Berlin, Heidelberg: Tsinghua University Press, Beijing and Springer-Verlag Berlin Heidelberg, 2011.

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Chakrabortty, Aranya. Control and optimization methods for electric smart grids. Edited by Ilic Marija D. 1951-. New York: Springer, 2012.

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International Joint Power Generation Conference (1998 Baltimore, Md.). Proceedings of the 1998 International Joint Power Generation Conference: Presented at the 1998 International Joint Power Generation Conference, August 23-26, 1998, Baltimore, Maryland. New York: American Society of Mechanical Engineers, 1998.

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G, Wilson David, and SpringerLink (Online service), eds. Nonlinear Power Flow Control Design: Utilizing Exergy, Entropy, Static and Dynamic Stability, and Lyapunov Analysis. London: Springer-Verlag London Limited, 2011.

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Robyns, Benoit. Vector Control of Induction Machines: Desensitisation and Optimisation Through Fuzzy Logic. London: Springer London, 2012.

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Piazza, Maria Carmela Di. Photovoltaic Sources: Modeling and Emulation. London: Springer London, 2013.

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Knowles, J. B. Simulation and control of electrical power stations. Taunton, Somerset, England: Research Studies Press, 1990.

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Computer-aided power system analysis. New York: Marcel Dekker, 2002.

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Derek, Schuurman, ed. PSpice simulation of power electronics circuits: An introductory guide. London: Chapman & Hall, 1997.

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International Conference on Digital Power System Simulators (1st 1995 College Station, Tex.). First International Conference on Digital Power System Simulators, ICDS '95, College Station, Texas, U.S.A., April 5-7, 1995: Proceedings. Edited by Kezunovic M, Texas A & M University. Dept. of Electrical Engineering., and Institute of Electrical and Electronics Engineers. College Station, Tex: Texas A&M University, Dept. of Electrical Engineering, 1995.

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Book chapters on the topic "Electric power production – Computer simulation"

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Hutterer, Stephan, Michael Affenzeller, and Franz Auinger. "Heuristic Power Scheduling of Electric Vehicle Battery Charging Based on Discrete Event Simulation." In Computer Aided Systems Theory – EUROCAST 2011, 311–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27549-4_40.

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Nishimura, Yasutaka, Taichi Shimura, Kiyoshi Izumi, and Kiyohito Yoshihara. "Design and Evaluations of Multi-agent Simulation Model for Electric Power Sharing Among Households." In Lecture Notes in Computer Science, 41–53. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66888-4_4.

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Stich, Volker, Ulrich Brandenburg, and Julian Krenge. "Energy Simulation for the Integration of Virtual Power Plants into Production Planning." In Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 98–105. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-662-44736-9_12.

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Zhang, Shaohua, Chen Zhao, and Xue Li. "Comparison of LOLE and EUE-Based Wind Power Capacity Credits by Probabilistic Production Simulation." In Communications in Computer and Information Science, 17–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34396-4_3.

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Hutterer, Stephan, Franz Auinger, Michael Affenzeller, and Gerald Steinmaurer. "Overview: A Simulation Based Metaheuristic Optimization Approach to Optimal Power Dispatch Related to a Smart Electric Grid." In Lecture Notes in Computer Science, 368–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15597-0_41.

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Kumar, Ravinder, Keval Nikam, and Ravindra Jilte. "A Simulation Model to Predict Coal-Fired Power Plant Production Rate Using Artificial Neural Network Tool." In Applied Computer Vision and Image Processing, 150–60. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4029-5_15.

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"Electric Power Production and Transmission Simulation." In Electrotechnical Systems, 333–434. CRC Press, 2012. http://dx.doi.org/10.1201/b13013-7.

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Chakkor, Saad, Mostafa Baghouri, and Abderrahmane Hajraoui. "Fault Severity Sensing for Intelligent Remote Diagnosis in Electrical Induction Machines." In Applications of Artificial Neural Networks for Nonlinear Data, 180–206. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-4042-8.ch008.

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Electrical induction machines are widely used in the modern wind power production. As their repair cost is important and since their down-time leads to significant income loss, increasing their reliability and optimizing their proactive maintenance process are critical tasks. Many diagnosis systems have been proposed to resolve this issue. However, these systems are failing to recognize accurately the type and the severity level of detected faults in real time. In this chapter, a remote automated control approach applied for electrical induction machines has been suggested as an appropriate solution. It combines developed Fast-ESPRIT method, fault classification algorithm, and fuzzy inference system interconnected with vibration sensors, which are located on various wind turbine components. Furthermore, a new fault severity indicator has been formulated and evaluated to avoid false alarms. Study findings with computer simulation in Matlab prove the satisfactory robustness and performance of the proposed technique in fault classification and diagnosis.
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Strebkov, Dmitry, Alexey Nekrasov, and Anton Nekrasov. "Resonant Power System for Electric Transport." In Advances in Computer and Electrical Engineering, 342–69. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-9179-5.ch014.

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Noncontact electric power supply with the use of cable line is an innovative trend in the development of electric transport. Work to develop such systems is carried out in the USA, South Korea, Germany, Israel, the Russian Federation. The VIESH researchers have developed and patented experimental models of a car and a tramway of the future without accumulators, which receive energy from external energy system through air gap from a single wire cable laid under the surface of road pavement. Noncontact systems for electric power supply to transport are developed at VIESH on the basis of resonant methods of electric power supply through a single-wire cable. This is a basic difference of the technology under consideration from similar ones. This technology makes it possible to realize at the new technological level the need for electric roads with minimal costs. Given that all the world's automakers are working on the production of an electric vehicle for mass production, the need for creating a motorway in the city and on inter-urban autobahns is even more topical.
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Pérez-Fortes, Mar, Aarón Bojarski, Sergio Ferrer-Nadal, Georgios M. Kopanos, José Ma Nougués, Enric Velo, and Luis Puigjaner. "Enhanced modeling and integrated simulation of gasification and purification gas units targeted to clean power production." In Computer Aided Chemical Engineering, 793–98. Elsevier, 2008. http://dx.doi.org/10.1016/s1570-7946(08)80138-1.

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Conference papers on the topic "Electric power production – Computer simulation"

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Higa, Osamu, Ken Shimojima, Yoshikazu Higa, Ayumi Takemoto, Shigeru Itoh, Atsushi Yasuda, Hirofumi Iyama, and Toshiaki Watanabe. "Production of Rice Powder Milling Flour Device and Characterization by Numerical Simulation." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63588.

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Rice powder is of interest in Japan, because it can be processed into various foods. However, conventional methods of manufacturing rice-powder generate heat when crushing the rice. National Institute of Technology, Okinawa College (ONCT) has been developing a pressure vessel for producing rice powder using underwater shock waves. The merits of this process are the dry condition and the lack of heating, and a decrease in the manufacturing cost can be expected, using this method. A power supply for generating the shock waves, a pressure vessel for crushing and, a device for the transportation of the rice were developed. The amount of flour that could be milled by the first prototype device was approximately 450g per hour. Then, the pressure vessel was improved to increase the rate of milling. Toward achieving this target, the characteristics of rice processing using shock waves were evaluated. First, a shock wave crushed the rice, which was trapped in transparent acrylic blocks. At the same time, the transmitted shock wave was observed using a high speed camera. From the result of the observation, the speeds of the wave passing through the acrylic blocks and rice was calculated. A linear relationship between the shock wave velocity (Us) and particle velocity (Up) in a material has been empirically found. The propagation of a shock wave in the pressure vessel was calculated by computer simulation. Moreover, a cylindrical pressure vessel with an internal diameter of 150mm was developed. Silicone hoses are installed in the pressure vessel, and the rice passes through in the hoses. The shock wave is generated by the electrical collapse induced by supplying a high voltage to the gap between electrodes in the center of the vessel. The rice is milled into flour by these phenomena, and rice is continuously supplied to the pressure vessel by a classification device and the transport device. The amount of flour milled per hour was verified experimentally.
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Wang, Zhuo, Pengwei Liu, Zhen Hu, and Lei Chen. "Simulation-Based Process Optimization of Metallic Additive Manufacturing Under Uncertainty." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97492.

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Abstract The presence of various uncertainty sources in metal-based additive manufacturing (AM) process prevents producing AM products with consistently high quality. Using electron beam melting (EBM) of Ti-6A1-4V as an example, this paper presents a data-driven framework for process parameters optimization using physics-informed computer simulation models. The goal is to identify a robust manufacturing condition that allows us to constantly obtain equiaxed materials microstructures under uncertainty. To overcome the computational challenge in the robust design optimization under uncertainty, a two-level data-driven surrogate model is constructed based on the simulation data of a validated high-fidelity multi-physics AM simulation model. The robust design result, indicating a combination of low preheating temperature, low beam power and intermediate scanning speed, was acquired enabling the repetitive production of equiaxed-structure products as demonstrated by physics-based simulations. Global sensitivity analysis at the optimal design point indicates that among the studied six noise factors, specific heat capacity and grain growth activation energy have largest impact on the microstructure variation.
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Hoevenaars, Anthony Tony, Mike McGraw, Colt Burley, and Elizabeth Bierhaus. "Improving Motor Performance and Runtime in ESP Applications with Novel Sinewave Filter." In SPE Gulf Coast Section Electric Submersible Pumps Symposium. SPE, 2021. http://dx.doi.org/10.2118/204493-ms.

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Abstract In recent years, the Oil and Gas Industry has greatly improved efforts in evaluating the electrical system involved in operating Electrical Submersible Pumps (ESP). The negative effects that poor power quality has on ESP motors equipped with variable speed drives is generally understood by the industry. However, with a strong focus on optimization and reliability, improvements of the power quality provided to our ESP systems has tremendous potential to enhance the ESP lifecycle. This paper will provide a detailed description of the current mitigation technique involving the conventional designs of PWM sinewave filters. Additionally, this paper will outline multiple Case Studies that have been conducted on several wells with ESPs installed, that demonstrate the success of a new design approach for PWM sinewave filters yielding lower electrical distortion and significantly improved motor performance. A detailed analysis evaluating problems and premature failures was performed on existing ESP wells equipped with both "6-step" and PWM operation. Computer simulations executed to analyze the new sinewave filter design showed much lower voltage distortion (< 2%) as well as other important improvements in performance included a very low insertion loss (ie. < 3% drop in voltage at full load) and improvement in PF to near unity at the inverter output. To complete the study, sinewave filters were built, tested and installed in several wells. Field data was gathered providing power quality measurements for electrical distortion, current imbalance, motor temperatures, motor vibration and production rates. The successful sinewave filter design used different tuned frequency parameters than conventional sinewave filters with clear data providing performance improvement. These results showed a substantial reduction in motor temperature leading to confidence in operations regarding the positive effect this would have on lifecycle of downhole equipment. The improvements can be streamlined across other ESP wells in the field leading to improved runtime, decrease in CAPEX & OPEX cost associated with ESPs and other surface equipment eventually leading to a strong cash flow performance for operators.
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Shiau, Ching-Shin Norman, and Jeremy J. Michalek. "A MINLP Model for Global Optimization of Plug-In Hybrid Vehicle Design and Allocation to Minimize Life Cycle Greenhouse Gas Emissions." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28064.

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Plug-in hybrid electric vehicles (PHEVs) have potential to reduce greenhouse gas (GHG) emissions in the U.S. light-duty vehicle fleet. GHG emissions from PHEVs and other vehicles depend on both vehicle design and driver behavior. We pose a twice-differentiable, factorable mixed-integer nonlinear programming model utilizing vehicle physics simulation, battery degradation data, and U.S. driving data to determine optimal vehicle design and allocation for minimizing lifecycle greenhouse gas (GHG) emissions. The resulting nonconvex optimization problem is solved using a convexification-based branch-and-reduce algorithm, which achieves global solutions. In contrast, a randomized multistart approach with local search algorithms finds global solutions in 59% of trials for the two-vehicle case and 18% of trials for the three-vehicle case. Results indicate that minimum GHG emissions is achieved with a mix of PHEVs sized for around 35 miles of electric travel. Larger battery packs allow longer travel on electric power, but additional battery production and weight result in higher GHG emissions, unless significant grid decarbonization is achieved. PHEVs offer a nearly 50% reduction in life cycle GHG emissions relative to equivalent conventional vehicles and about 5% improvement over ordinary hybrid electric vehicles. Optimal allocation of different vehicles to different drivers turns out to be of second order importance for minimizing net life cycle GHGs.
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Oh, Chang H., Cliff Davis, Robert Barner, and Steven Sherman. "Design Configurations for Very High Temperature Gas-Cooled Reactor Designed to Generate Electricity and Hydrogen." In 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/icone14-89868.

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The High Temperature Gas-Cooled Reactor is being envisioned that will generate not just electricity, but also hydrogen to charge up fuel cells for cars, trucks and other mobile energy uses. INL engineers studied various heat-transfer working fluids—including helium and liquid salts—in seven different configurations. In computer simulations, serial configurations diverted some energy from the heated fluid flowing to the electric plant and hydrogen production plant. In anticipation of the design, development and procurement of an advanced power conversion system for HTGR, this study was initiated to identify the major design and technology options and their tradeoffs in the evaluation of power conversion system (PCS) coupled to hydrogen plant. In this study, we investigated a number of design configurations and performed thermal hydraulic analyses using various working fluids and various conditions (Oh, 2005). This paper includes a portion of thermal hydraulic results based on a direct cycle and a parallel intermediate heat exchanger (IHX) configuration option.
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Mashiko, Koichi, Masataka Mochizuki, Yuji Saito, Yasuhiro Horiuchi, Thang Nguyen, Xiao Ping, Tien Nguyen, and Vijit Wuttijumnong. "Application of Micro-Channel Fin for Cold Plate of Liquid Cooling System and Vapor Chamber." In ASME 2009 InterPACK Conference collocated with the ASME 2009 Summer Heat Transfer Conference and the ASME 2009 3rd International Conference on Energy Sustainability. ASMEDC, 2009. http://dx.doi.org/10.1115/interpack2009-89144.

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Recently energy saving is most important concept for all electric products and production. Especially, in Data-Center cooling system, power consumption of current air cooling system is increasing. For not only improving thermal performance but also reducing electric power consumption of this system, liquid cooling system has been developed. This paper reports the development of cold plate technology and vapor chamber application by using micro-channel fin. In case of cold plate application, micro-channel fin technology is good for compact space design, high thermal performance, and easy for design and simulation. Another application is the evaporating surface for vapor chamber. The well-known devices for effective heat transfer or heat spreading with the lowest thermal resistance are heat pipes and vapor chamber, which are two-phase heat transfer devices with excellent heat spreading and heat transfer characteristics. Normally, vapor chamber is composed of sintered power wick. Vapor chamber container is mechanically supported by stamped pedestal or wick column or solid column, but the mechanical strength is not enough strong. So far, the application is limited in the area of low strength assembly. Sometime the mechanical supporting frame is design for preventing deformation. In this paper, the testing result of sample is described that thermal resistance between the heat source and the ambient can be improved approximately 0.1°C/W by using the micro-channel vapor chamber. Additionally, authors presented case designs using vapor chamber for cooling computer processors, and proposed ideas of using micro-channel vapor chamber for heat spreading to replace the traditional metal plate heat spreader.
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Fanney, A. Hunter, Mark W. Davis, Brian P. Dougherty, David L. King, William E. Boyson, and Jay A. Kratochvil. "Comparison of Photovoltaic Module Performance Measurements." In ASME 2005 International Solar Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/isec2005-76086.

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Computer simulation tools used to predict the energy production of photovoltaic systems are needed in order to make informed economic decisions. These tools require input parameters that characterize module performance under various operational and environmental conditions. Depending upon the complexity of the simulation model, the required input parameters can vary from the limited information found on labels affixed to photovoltaic modules to an extensive set of parameters. The required input parameters are normally obtained indoors using a solar simulator or flash tester, or measured outdoors under natural sunlight. This paper compares measured performance parameters for three photovoltaic modules tested outdoors at the National Institute of Standards and Technology (NIST) and Sandia National Laboratories (SNL). Two of the three modules were custom fabricated using monocrystalline and silicon film cells. The third, a commercially available module, utilized triple-junction amorphous silicon cells. The resulting data allow a comparison to be made between performance parameters measured at two laboratories with differing geographical locations and apparatus. This paper describes the apparatus used to collect the experimental data, test procedures utilized, and resulting performance parameters for each of the three modules. Using a computer simulation model, the impact that differences in measured parameters have on predicted energy production is quantified. Data presented for each module include power output at standard rating conditions and the influence of incident angle, air mass, and module temperature on each module’s electrical performance. Measurements from the two laboratories are in excellent agreement. The power at standard rating conditions is within 1% for all three modules. Although the magnitude of the individual temperature coefficients varied as much as 17% between the two laboratories, the impact on predicted performance at various temperature levels was minimal, less than 2%. The influence of air mass on the performance of the three modules measured at the laboratories was in excellent agreement. The largest difference in measured results between the two laboratories was noted in the response of the modules to incident angles that exceed 75°.
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Arnold, Rinaldo, and Peter Gratzfeld. "Modeling of a three-phase inductive power transfer system in phasor domain for fast simulation." In 2013 3rd International Electric Drives Production Conference (EDPC). IEEE, 2013. http://dx.doi.org/10.1109/edpc.2013.6689745.

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Cooper, Thomas A., and James S. Wallace. "Design of a 200 kWe Solar Thermal Power Plant for Ontario." In ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/es2008-54216.

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A preliminary design and feasibility study has been conducted for a 200 kWe solar thermal power plant for operation in Ontario. The objective of this study is to assess the feasibility of small-scale commercial solar thermal power production in areas of relatively low insolation. The design has been developed for a convention centre site in Toronto, Ontario. The plant utilizes a portion of the large flat roof area of the convention centre to accommodate the collector array. Each power plant module provides a constant electrical output of 200 kWe throughout the year. The system is capable of maintaining the constant output during periods of low insolation, including night-time hours and cloudy periods, through a combination of thermal storage and a supplemental natural gas heat source. The powerplant utilized the organic Ranking cycle (ORC) to allow for relatively low source temperatures from the solar collector array. A computer simulation model was developed to determine the performance of the system year-round using the utilizability-solar fraction method. The ORC powerplant uses R245fa as the working fluid and operates at an overall efficiency of 11.1%. The collector is a non-concentrating evacuated tube type and operates at a temperature of 90°C with an average annual efficiency of 23.9%. The system is capable of achieving annual solar fractions of 0.686 to 0.874 with collector array areas ranging from 30 000 to 40 000 m2 and storage tank sizes ranging from 3.8 to 10 × 106L respectively. The lowest possible cost of producing electricity from the system is $0.393 CAD/kWh. The results of the study suggest that small-scale solar thermal plants are physically viable for year round operation in Ontario. The proposed system may be economically feasible given Ontario’s fixed purchase price of $0.42 CAD/kWh, but the cost of producing electricity from the system is highly dependent on the price of the solar collector.
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Dzmura, Jaroslav, Jaroslav Petras, Jozef Balogh, and Milan Bernat. "Modeling and computer simulation of electrical separation." In 2016 17th International Scientific Conference on Electric Power Engineering (EPE). IEEE, 2016. http://dx.doi.org/10.1109/epe.2016.7521786.

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Reports on the topic "Electric power production – Computer simulation"

1

Szymanski, J. K. Sensitivity analysis of production and power consumption to various constructional and operating factors using a computer based simulation conveyor - bin/hopper model. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/304959.

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