Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 64 for “"Optimal power flow"”.
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Optimal power flow with price-elastic demand
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Optimal power flow using a genetic algorithm and linear algebra
… utility meet is electric load economically. The optimal power flow problem (OPF) problem is an optimization problem, in which the utility strives to minimize its costs while satisfying all of its constraints. A genetic algorithm (GA)---a specific type of artificial intelligence-is employed to …
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Fast optimal power flow analysis for large-scale smart grid
Optimal power flow OPF plays an important role in power system operation. The emerging smart grid aims to create an automated energy delivery system that enables two-way flows of electricity and information. As a result, it will be desirable if OPF can be solved in real time in order to allow the …
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AC Optimal Power Flow for Physically and Economically Informed Grid Decarbonization
Current practices for power systems operations and planning rely on an approximate optimal power f low formulation known as DC Optimal Power Flow (DC OPF). Results from DC OPF are not implementable, requiring feasibility checks and adjustments from AC power flow analysis. Current methodologies do …
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Strengthening QC relaxations of optimal power flow problems by exploiting various coordinate changes
… by the potential for improvements in electric power system economics, this dissertation studies the AC optimal power flow (AC OPF) problem. An AC OPF problem optimizes a specified objective function subject to constraints imposed by both the non-linear power flow equations and engineering …
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A decentralised graph-based framework for electrical power markets
… of the main tools used to clear the electrical power market across the world is the DC optimal power flow. Nevertheless, the classical model designed for vertically integrated power systems is now under pressure as new issues such as partial information introduced by the deregulation process, …
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Computational Complexity of Electrical Power System Problems
… problems in the application of electrical power systems. Knowledge of the current state of the power system is important for power network operators. This helps, for example, to predict if the network is trending towards an undesirable state of operation, or if a power line is working at …
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Computational Complexity of Electrical Power System Problems
… problems in the application of electrical power systems. Knowledge of the current state of the power system is important for power network operators. This helps, for example, to predict if the network is trending towards an undesirable state of operation, or if a power line is working at …
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An open-source object oriented power systems analysis software solution implemented in ISO C++
There is a need to have open-source tools for power systems analysis, particularly for academic and other research purposes. This thesis provides the academic and other research communities a beginning set of open-source power analysis tools written in C++. There are many types of power analysis …
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Distributed Control, Optimization, and State Estimation for Renewable Power System
<p>The traditional power systems are usually centralized systems, in which the control, operation and monitoring are performed by the centralized control center, e.g., SCADA. However, with the development of renewable energy, power systems are getting more and more distributed. So, it becomes …
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Line-limit-preserving power system equivalents
This dissertation develops methods to create power system equivalents that preserve thermal line limits. Existing equivalent methods do not retain thermal limits of equivalent lines, which may result in the transfer capability of the equivalent case differing significantly from that of the original …
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Power system transmission enhancement through storage
… been made to study the impact ofSMES system on power system transmission with a decoupled Optimal Power Flow program. Linear Programming (LP) and Quadratic Programming (QP) storage scheduling methods including transmission security have been developed, LP method is suitable for single storage …
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Renewable Energy Integration in Distribution System with Artificial Intelligence
… of renewable energy development in distribution power system, artificial intelligence (AI) can play an indispensiable role. In this thesis, a series of artificial intelligence based methods are studied and implemented to further enhance the performance of power system operation and control.</p> …
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Voltage Unbalance-Cognizant Optimization of Distribution Grids
… voltage unbalance. To combat this, a novel Optimal Power Flow (OPF) is designed to help operate these resources in a manner that curtails voltage unbalance using the reactive power compensation capabilities of inverters. The OPF was run for a wide variety of loading conditions on a pair of …
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Análise do problema de máxima geração distribuída observando o critério estático da estabilidade de tensão
… an optimization problem built upon the classical Optimal Power Flow (OPF), solved by an Interior-Point Method combined with Scatter Search Metaheuristics. The MHC problem, invariably constrained either by overvoltages or overcurrents, may yield a solution that can lie in the bottom part of the …
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Optimization in electrical distribution systems: Discrete Ascent Optimal Programming
This dissertation presents a new algorithm for optimal power flow in distribution systems. The new algorithm, Discrete Ascent Optimal Programming (DAOP), will converge to the same solution as the Lagrange multiplier approach as demonstrated by example. An intuitive discussion illustrating the path …
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Smart Grid Technologies for Efficiency Improvement of Integrated Industrial Electric System
… electric utility. The 24-hour load profile and optimal power flow program are used to simulate the IEEE 39 Bus Test System. The methodology for the use of smart grid technology in fuel saving is documented in the thesis. The results obtained from this research shall be extended to include …
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