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 16 of 16 for “"Line Fault"”.
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Automated transmission line fault analysis the SMT method
Analyzing faults from transmission lines automatically using a computer is a complex, multi-step process that takes a literal understanding of how the computer reads the data. While there are many ways to approach this problem (e.g.. Inductance Calculation), the Square Mean Test method allows for …
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AUTOMATIC ON-LINE FAULT DETECTIONALGORITHM FOR HYDRAULIC TURBINES
… monitoring systems for preventing catastrophic faults and also for detecting the on-going damages are really necessary and valuable. According to the expense of maintenance of turbines and transformers and sometimes spending a lot of time to inspect them inside, it is necessary to predict the …
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On-line fault diagnosis of industrial processes based on artificial intelligence techniques
… of artificial intelligence techniques for on-line process control and fault detection and diagnosis are investigated. The majority of the research is on using artificial intelligence techniques in on-line fault detection and diagnosis of industrial processes. Several on-line approaches, …
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The tectonic relationships of the Hillabee Chlorite Schist and the adjacent rock units in southern Cleburne County, Alabama
… blocks separated by a large displacement thrust fault. The Talladega block is composed of low grade metamorphic rocks. Sericite Phyllites and Quartzites are the main composition units. Metamorphic and tectonic events have created four defined structural events that are mapped in the block. The …
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Expert systems in on-line process control and fault diagnosis
In this research expert systems for on-line process control and fault diagnosis have been investigated and the majority of the research is on using expert systems in on-line process fault diagnosis. Several on-line expert systems, including a rule based controller and several fault diagnosis …
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Fault tolerant behavior of advanced control schemes of induction machine drives
… performance and, most importantly, under power line fault scenarios. MATLAB-Simulink package is used to develop system models for both control schemes. System studies are done under normal and abnormal operating conditions. In the end, conclusions are drawn based on their behavior and comparison …
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Qualitative Adaptive Identification for Powertrain Systems. Powertrain Dynamic Modelling and Adaptive Identification Algorithms with Identifiability Analysis for Real-Time Monitoring and Detectability Assessment of Physical and Semi-Physical System Parameters
… These are, the development of an on-line health monitoring system for engine dynamometer coupling shafts based on recursive estimation of shaft’s physical parameters, the sensitivity analysis and adaptive identification of engine friction parameters, and the non-linear recursive …
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Supporting Distributed Fault Tolerance In A Real-Time Micro-Kernel
… centralized control strategies, fail to support fault tolerance in the face of failures among processing nodes or communications links, and fail to robustly support live addition or removal of nodes from a running network. In this context, failure of a single element means failure of the entire …
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The characterisation and automatic classification of transmission line faults
… on a reliable electricity supply. Electrical faults on transmission lines are a cause of both interruptions to supply and voltage dips. These are the most common events impacting electricity users and also have the largest financial impact on them. This research focuses on understanding the …
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Next-generation, phasor-based distance relay with fault-path resistance immunity
… utilized for the protection of transmission lines. A distance relay calculates the apparent impedance between the relay location and the fault location, and uses this value to determine the approximate location of the fault. Traditional distance relays, however, are plagued with problems …
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Monitoring and anomaly detection in solar thermal systems using adaptive resonance theory neural networks
… for SHW systems to become economic and reliable. Fault Detection and Diagnosis (FDD) in SHW systems is an important part of maintaining proper performance, reducing power consumption and unnecessary peak electricity demand. The aim of the current work is to develop anomaly detection system that …
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Geometry, evolution and scaling of fault relay zones in 3D using detailed observations from outcrops and 3D seismic data
… during the course of the thesis, which enables fault-related deformation – specifically, the apparent dip of mapped horizons measured in a direction perpendicular to the average strike of a fault array (here termed “fault-normal rotation”, or “FNR”) – to be quantitatively analysed around imaged …
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Enhancing Grid Reliability With Phasor Measurement Units
… a single system event, e.g., a transmission line fault, may cause subsequent failures that lead to a cascading failure in the grid. In the worst case, these failures can result in large-scale blackouts. To assess the risk of an event in steady state, a probabilistic cascading failure model is …
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Neoproterozoic to Holocene tectonothermal evolution of the southern Cantabrian Mountains NW Iberia, revealed by apatite fission-track thermochronology
… foreland fold-and-thrust belt. South of the León Line fault system non-metamorphic conditions dominate, to the North anchizone to epizone conditions are recorded. The Narcea Antiform, unconformably overlain by the Palaeozoic succession, represents as a Neoproterozoic sedimentary basement, the …
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Digital control of a multi-channel boundary-conduction-mode boost converter for power-factor-correction applications
… cost and having high efficiency for a universal line-voltage input. Single-channel and two-channel BCM boost converters using analog control ICs have been commonly used in industry. However, the use of multi-channel BCM boost converters with more than two-channels has been limited as there are no …
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Fault Identification of UPFC-Compensated Transmission Lines in Complex Microgrids Using an Intelligent Relaying Scheme Based on Discrete Wavelet Transform and ANN Classifier
… increase power flow capacity of transmission lines while DERs supply additional electric energy. In these systems, current direction, as well as power injections, may change at any time; hence, the protection task is complicated during fault occurrences. The fault data is highly nonlinear and …