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 26 for “"Power system operations"”.
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System Flexibility and AI Computational Enhancement for Day-Ahead Power System Operations
… of renewable energy sources (RES). The power system is a complicated network of electrical elements and requires efficient operation. The day-ahead operations use the security-constrained unit-commitment (SCUC) to provide a reliable, secure, and least-cost solution while clearing the …
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Operation under Uncertainty in Electric Grid: A Multiparametric Programming Approach
Uncertainty is a major factor in power system operations. In recent years, with the emergence of the smart grid, uncertainty level has been further elevated in both the generation and demand side of power systems. Increasing uncertainty exposes the electric grid to potential safety issues and …
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Design and development of intelligent computational techniques for power quality data monitoring and management
The most important requirement of power system operations is sustained availability and quality supply of electric power. In Electrical Power Distribution System (EPDS), non-linear loads are the main cause of power quality (PQ) degradation. The PQ problems generated by these non-linear loads are …
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Development of expert systems as on-line operational aids
In recent years, the interest in Expert Systems (ES) has grown rapidly. The application of expert systems to power system operations and on-line environments is a new area of research. In this thesis, the issues involved with on-line knowledge based systems for operations is investigated. To begin, …
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Nonlinear Filtering: Dimensional Reduction and Particle Methods
"Our result is applied to the electric power system whose daily operations must be guarded against failures due to natural disasters, rogue attacks and other unexpected conditions. One of the central challenges in current power system operations is to develop a better estimation scheme which is …
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Power system stability evaluation using the miniaturized A-C network analyzer
One of the most important problems involved in power system operations is stability evaluations to determine whether or not a system will remain in synchronism during transient disturbances. The mathematical expressions from which stability is determined are relatively simple in themselves; …
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Modeling Considerations for the Long-Term Generation and Transmission Expansion Power System Planning Problem
Judicious Power System Planning ensures the adequacy of infrastructure to support continuous reliability and economy of power system operations. Planning processes have a long and rather successful history in the United States, but the recent infl‚ux of unpredictable, nondispatchable generation …
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Reliability Assessment of Power Systems with Wind Power Generation
Wind power generation, the most promising renewable energy, is increasingly attractive to power industry and the whole society and becomes more significant in the portfolio of generation systems. However, because of the unfavorable features of wind power, it affects all aspects of traditional …
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A sensitivity analysis of cyber contingency ranking within the SOCCA framework
Cyber-infrastructure is at the heart of power system operations and is critical for maintaining reliable and stable power supply. The advent of smart grid technology will undoubtedly increase the exposure and potential avenues of cyber attack well into the future. The industry standard of …
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Dynamic dispatch of direct load control
… for the economic and reliable operation of the power system, is an important and active element of Load Management (LM). Currently attention has focussed on the integration of DLC into system operations. However, as yet, DLC is regarded as a discretionary resource to be used by the system …
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Countering Cybersecurity Vulnerabilities in the Power System
… in software pose an important threat to power grid security, which can be exploited by attackers if not properly addressed. Every month, many vulnerabilities are discovered and all the vulnerabilities must be remediated in a timely manner to reduce the chance of being exploited by …
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Data-driven models for uncertainty and behavior
… problem under uncertainty that is critical to power system operations. Using real data from the New England market, we illustrate how our proposed data-driven uncertainty sets can be used to build high-fidelity models of the demand for electricity, and that the resulting large-scale, …
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Uncertainty Quantification, State and Parameter Estimation in Power Systems Using Polynomial Chaos Based Methods
It is a well-known fact that a power system contains many sources of uncertainties. These uncertainties coming from the loads, the renewables, the model and the measurement, etc, are influencing the steady state and dynamic response of the power system. Facing this problem, traditional methods, …
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Data-driven Protection of Transformers, Phase Angle Regulators, and Transmission Lines in Interconnected Power Systems
… for fault detection in modern electric power grids. Once a fault has occurred, it must be identified quickly and a variety of preventative steps must be taken to remove or insulate it. As a result, detecting, locating, and classifying faults early and accurately can improve safety and …
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Power Line Communication for Low-Data-Rate Energy Control
Peaks in electricity demand shape power system operations at various scales. In large buildings, fees based on monthly demand peaks can comprise 30–70% of electricity bills. In sections of distribution grids, demand peaks can stress transformers, increasing the risk of equipment failure. …
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ONLINE LEARNING AND ITS APPLICATIONS IN ELECTRICITY MARKETS
… model. Since uncertainty plays a big role in power system operations and power consumption, it makes optimizing actions a very challenging task for participants of wholesale electricity markets. This results in various interesting problems that requires an online learning approach. Motivated …
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Real-time power system operational reliability tools
The primary goal of power system operators is to effectively and economically maintain operational reliability---a power system is said to be in an operationally reliable state if the supply-demand balance is met, and the system can tolerate the failure of a small number of components without …
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Effective utilization of flywheel energy storage (FES) for frequency regulation service provision
… in the form of wind farms and solar photovoltaic systems has impacted power system operations and planning in many ways. Today, renewable energy resources constitute a significant portion of new power generation capacity additions. As the outputs of renewable generation resources are function of …
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Cost of Electricity Interruption to Commercial and Industrial End-Users
… to suit value-based reliability planning and power system operations management. The cost assessment was done from the business customer’s viewpoint via a firm-level survey of commercial and manufacturing businesses in Cape Town. Three CIC models were developed from an analysis of the survey …
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Improving electricity market efficiency : from market monitoring to reserve allocation
… based on medium- and large-scale electric power systems. We then propose a new system-operation model using stochastic optimization to systematically allocate reserves under uncertainty. This model aims to overcome the difficulties in both system and market operations caused by the …
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