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 8 of 8 for “"Incipient Fault"”.
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Artificial Intelligence Applications in the Diagnosis of Power Transformer Incipient Faults
… for the diagnosis of power transformer incipient fault. The AI techniques include artificial neural networks (ANN, or briefly neural networks - NN), expert systems, fuzzy systems and multivariate regression. The fault diagnosis is based on dissolved gas-in-oil analysis (DGA). A …
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An artificial neural network approach to transformer fault diagnosis
… network (ANN) approach to diagnose and detect faults in oil-filled power transformers based on dissolved gas-in-oil analysis. The goal of the research is to investigate the available transformer incipient fault diagnosis methods and then develop an ANN approach for this purpose. This ANN …
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CLASSIFICATION OF HIGH IMPEDANCE FAULTS, INCIPIENT FAULTS AND CIRCUIT BREAKER RESTRIKES DURING CAPACITOR BANK DE-ENERGIZATION IN RADIAL DISTRIBUTION FEEDERS
… unsafe operation, including a high impedance fault (HIF) caused by a downed conductor touch ground surface, an incipient fault (IF) caused by partial breakdown to a cable insulation, and a circuit breaker (CB) malfunction due to capacitor bank de-energization to cause current restrikes. These …
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Introducing statistical and machine learning-based methods of enhancing the resiliency and security of electrical-based critical infrastructure
… actionable information to enable real-time Incipient Fault Prediction (IFP), (ii) reducing an adversary’s ability to intercept information by introducing AI-based, session-based cryptographic scheme generation, and (iii) improving information’s trust by identifying the source of wireless …
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Condition assessment using dissolved gas analysis on transmission power transformers
… (LEDT) technique for the early detection of incipient faults evolving in transmission power transformers and reactors. Further evaluation is made using other generally accepted DGA diagnosis methods such as Roger's Ratios, Doernenburg's Ratio, Duval's Triangle 1, Duval's Pentagon 1 and a …
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In situ blocked force measurement in gearboxes with potential application for condition monitoring
… breakage is serious and legitimate concerns. Incipient fault detection in gears has thus become the subject of intensive investigation and at this stage of development, there are many competing condition monitoring methods based on vibration signal analysis. This thesis summarizes the research …
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High Impedance Arc Fault Detection in a Manhole Environment.
<p>The scope of this thesis was to develop a prototype high-impedance arc detection system that a utility worker could use as an early warning system while working in a manhole environment. As part of this system sensors and algorithms were developed to increase the sensitivity of detecting an arc …
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Asset Management of Underground Cables Factoring Resilience
… ground are relatively easy to maintain since the faults can be visibly located and repaired, whereas underground cables buried in ducts and trenches are more challenging to maintain, repair and replace. Generally, faults in underground cables are hard to locate until they gradually develop into …