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 14 of 14 for “"Cascading Failure"”.
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Critical point study in the Sabah power grid for cascading failure blackouts
… issues in the system can lead to the cascaded failure to the system grid. These issues also can affect the rotor angle of generation motor and cause a loss of generation in the system grid. In this project, the conceptual of Sabah system grid was design for simulation purposes. Then, the …
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An Initial Exploration of Spatial Spreading of Cascading Failure in an Electric Power System
<p>Large blackouts typically involve the cascading outage of transmission lines. However, little is known about the overall patterns of cascading outages. This research processes and initially examines observed utility data to explore the spatial spreading of cascading failure. The utility data is …
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Risk Management of Cascading Failure in Composite Reliability of a Deregulated Power System with Microgrids
… Large-scale blackouts typically result from cascading failure originating from a local event, as typified by the 2003 U.S.-Canada blackout. Their mitigation in power system planning calls for the development of methods and algorithms that assess the risk of cascading failures due to relay …
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Threat Assessment for Multistage Cyber Attacks in Smart Grid Communication Networks
… changing attack scenarios and understanding cascading effects) when performing threat assessments for multistage cyber attacks in smart grid communication networks. The thesis looks at the stochastic and dynamic nature of multistage cyber attacks in smart grid use cases and develops a …
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Toward An Explainable Electric Power Grid Operation Assistant Using Large Language Models
… Network (L2RPN) benchmark for steady-state and cascading failure scenarios. While the LLM agents performed better in scenarios requiring exploratory decision-making, they struggled in steady-state operation and were constrained by their integration with tools and the testing environment. This …
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WAMS-based Intelligent Load Shedding Scheme for Preventing Cascading Blackouts
… system integrity in the event of an evolving cascading failure. The proposed scheme detects and estimates the size of an event by monitoring the tie lines of a control area using Wide Area Measurement Systems (WAMS) and initiates load shedding by removing loads whose locations are optimally …
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Enhancing Grid Reliability With Phasor Measurement Units
… 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 developed. With the real-time …
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A Line Outage Study for Prediction of Static Power Flow Redistribution
… 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 line outage happens, the power flow on the tripped line will be redistributed to …
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Critical Infrastructure Automated Immuno-Response System (CIAIRS)
… for governments and private industries. Any failures, caused by cyber-attacks, have the ability to spread through interconnected systems and are a challenge to detect; especially as the Internet is now heavily reliant on Critical Infrastructures. This has led to different security threats …
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Cascading Failures and Contingency Analysis for Smart Grid Security
… thesis is to facilitate the understanding of cascading failure and blackouts triggered by multi-component attacks, and to support the decision making in the protection of a reliable and secure smart grid. In this work, a new definition of load is proposed by taking power flow into …
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Performance-Based Coastal Engineering Framework
… factors, do not explicitly consider potential cascading-effects, and miss the opportunity to leverage evidence – in the form of data – as it becomes available. To address these gaps, this thesis proposes the first performance-based framework specific for coastal structures and systems that is …
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System reliability analysis of structures subjected to fatigue induced sequential failures using evolutionary algorithms
In the past, many catastrophic failures have occurred due to lack of redundancy and managerial oversight. For example, it was found that local failures due to improper welds that connected the suspended truss to the anchor trusses caused the collapse of the Grand Sung-Soo Bridge in Seoul, South …
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Reliable facility location design and traffic sensor deployment under probabilistic disruptions
… mainly due to the large number of possible failure scenarios. In this Ph.D. research, we will overcome this challenge by developing a range of innovative modeling methods, and then generalize the methodologies to address supply chain design and traffic surveillance sensor location problems. …
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Logic-Targeted Data Poisoning and Cascading Failures in AI-Driven Distributed Traffic Control Systems
… with an equivalent single-point hardware failure. Standard anomaly detection methods were not effective because a zero-vehicle reading is physically plausible. The standard detector achieved an AUC close to 0.57, only slightly above random discrimination. This thesis proposes the False …