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 12 of 12 for “"Line Outage"”.
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Quickest change detection with applications to line outage detection
… change detection (QCD) theory in the problem of line outage detection and identification. We start by discussing fundamental results of sequential hypothesis testing and QCD, and by proposing an algorithm for the QCD setting under transient dynamics. Following, we apply these results in the line …
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A Line Outage Study for Prediction of Static Power Flow Redistribution
Transmission line is a crucial role in power transmission network which connects generating units to consumers. Some unpredicted failure events such as lightening or system faults can cause transmission line tripped, which may bring about a large interruption to the system and causes damage. When …
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Small signal analysis of power systems: Eigenvalue tracking method and eigenvalue estimation contingency screening for DSA
… second part of this dissertation develops a new line outage screening method for dynamic security analysis (DSA). The new screening method extends the use of distribution factors commonly used in static security analysis (SSA) to DSA by using the factors with eigenvalue sensitivities to estimate …
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Real-time power system topology change detection and identification
… assumed to be known. Instead of relying on offline models as with traditional methods, the proposed method is model-free, and exploits the high-speed synchronized measurements provided by phasor measurement units (PMUs). In this framework, a statistical quickest change algorithm is applied to …
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Identification of Critical Lines for Power System Operational Reliability Assessment
… reliably. Identifying the stressed or critical line or lines to ensure successful power transmission is crucial. Three critical line identification methods are developed. One method is based on large-scale sensitivity analysis when a line outage becomes unsolvable. The other two methods try to …
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Fast power network detection of topology change locations using PMU measurements
… be continuously updated for the purpose of on-line analysis. Several topology processing schemes have been developed in the literature to accomplish this task. The majority of these schemes process breaker statuses to detect changes in system topology. Transformer tap positions as well as …
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Flexible AC transmission system compensation on a utility transmission system
… to the McCullough-Arden #2 230kV transmission line will increase bulk power transfers into this area by 108 MW while mitigating a line outage and releasing increased power flows on a critically loaded line. This study also shows that the power system modeled will reach a steady-state condition …
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Real-time power system operational reliability tools
… of the system, which is typically obtained offline. As such, the effectiveness of these tools is highly dependent on the accuracy of the model from which such sensitivities are computed, which may be compromised due to erroneous input parameters, undetected topology changes, and changes in …
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H2 Control for Improved Stability of Multi-area Electric Power System with High Levels of Inverter-Based Generation
… (RBRM) that accounts for the probability of a line outage versus the severity of impact. This allows system planners to judiciously allocate expenses for reliability improvements based on the greatest economic benefit. The second approach is the synchrophasor validation method (SVM) which …
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Measurement-based tools for power system monitoring and operations
This thesis proposes several online power system monitoring and operations tools that leverage real-time measurements with little or no reliance on models obtained offline. Instead of relying on offline models, which can be grossly inaccurate, as in conventional power system monitoring and …
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Power System Disturbance Analysis and Detection Based on Wide-Area Measurements
… Reliability Council of Texas (ERCOT). The linear relationship between frequency deviation and frequency change rate during generation/loss mismatch events is verified by the measurements in the three Interconnections. The relationship between the generation/load mismatch and system …