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 110 for “"pmu"”.
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A Method for PMU-Based Reconfigurable Monitoring
… to ensure stability. Phasor Measurement Units (PMUs) provide very good observation of a small area of a network, but their relatively high cost prevents them from being deployed at every point. Therefore, to monitor an entire network, State Estimation is still required. By combining these two …
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Minimal PMU placement for graph observability: a decomposition approach
This thesis explores the PMU placement problem, that is, the placement of a minimal number of Phase Measurement Units (PMUs) on the nodes of a power system graph such that the entire graph is observed. The NP-completeness of PMU placement for planar bipartite graphs is shown. PMU placement …
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On the application of PMU measurements to system stability analysis
… to analyze power system stability by utilizing PMU measurements. As the current power system is operated close to its limits, stability is of high concern for both operators and customers. The implementation of phasor measurement units across the power system allows for accurate and fast …
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A Practical Comprehensive Approach to PMU Placement for Full Observability
… the placement of phasor measurement units (PMUs) in electric transmission systems has gained much attention. Engineers and mathematicians have developed a variety of algorithms to determine the best locations for PMU installation. But often these placement algorithms are not practical for …
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Fast power network detection of topology change locations using PMU measurements
… states obtained from phasor measurement units (PMUs). This scheme can be applied on reduced systems where parts of the network are not covered by PMU measurements. The scheme was tested during different outage events in the IEEE39-bus system. The obtained results validated the algorithm’s …
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On Verification of Load Models for Frequency Response Using PMU Data
… based on real-life frequency excursions. PMU data collected in Alberta’s grid is used for the scope of studies. Load models explored include CLOD, ZIP and exponential load models. Furthermore, measurement-based load modeling is defined to optimize the load model parameters to improve the …
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Application of PMU for system stability analysis with Thevenin equivalent modeling
… stability by utilizing phasor measurement units (PMUs). In the past decades, industrialization has expanded rapidly around the world, and the demand for stable and reliable power sources has increased. Therefore, maintaining stable operation of the power system is an imperative and urgent issue. …
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PMU-Based Applications for Improved Monitoring and Protection of Power Systems
… and doing data conditioning. The role of PMUs in fulfilling these four objectives forms the basis of this dissertation. Classification and regression tree (CART) built using phasor data has been extensively used in power systems. The splits in CART are based on a single attribute or a …
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Phasor Measurement Unit (PMU) : based system for event detection on synchronous generators
… sometimes seen in the Phasor Measurement Unit (PMU) data in the Icelandic power system, probably due to the small size. The use of PMU data with event detection algorithms, along with modeling, could be a method of capturing these events for analysis. The goals of this thesis are to develop an …
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Two-Stage Fault Location Detection Using PMU Voltage Measurements in Transmission Networks
… System (WAMS) and Phasor Measurement Unit (PMU), various fault location algorithms have been proposed. The purpose of this work is to determine, modify and test the most appropriate fault location method which can be implemented with a PMU only linear state estimator. The thesis reviews …
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A predictive out-of-step protection scheme based on PMU enabled distributed dynamic state estimation
… compared to conventional metering devices. PMUs provide synchronized measurements, where synchronization is achieved via a GPS clock which provides the synchronizing signal with accuracy of 1 μsec. As a result, the computed phasors have a common reference (UTC time) and can be used in local …
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Renewable Energy Integrated Power System Stability Assessment with Validated System Model Based on PMU Measurements
… transmission line parameters in the system with PMU measurements. The system transient stability assessment is conducted based on this validated model. The constrained stability region is estimated with Lyapunov functions family based method in the center of angles reference frame considering …
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PMU-Driven Fault Location in Distribution Systems with DERs: Impedance-Based and Multi-Agent System Strategies
… providers. With the increasing deployment of PMUs in distribution networks, this study leverages synchrophasor measurements for fault location, addressing gaps in the existing literature. Conventional fault location methods often rely on centralized architectures, creating a single point of …
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Perceptions of Metabolic Syndrome Management Utilization in relation with Patient Characteristics and Health-related Quality of Life
… of disease management resource utilization (PMU). Therefore, understanding patients' PMU is crucial for improving health outcomes. The study investigated PMU, explored PMU predictors, and investigated the impact of PMU and patients’ demographics on HRQoL. Using a cross-sectional design, data …
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Applications of PMUSimulator in PDC Testing
… essential for real time control of the system. PMUs are time synchronized throughout the power system and take sample measurements in very small windows of time. Phasor Data Concentrators accept PMU data and time align the data so that a snapshot of the power system can be viewed in real time. …
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Cooperative congestion control in power grid communication networks
… for the delivery of Phasor Measurement Unit (PMU) sensor data with real time guarantees to the control centers for timely decisions. Present day network systems are unable to ensure the real-time needs of the PMU data as they are not designed to support PMU devices. Hence, the need arises for …
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Optimal Substation Coverage for Phasor Measurement Unit Installations
The PMU has been found to carry great deal of value for applications in the wide area monitoring of power systems. Historically, deployment of these devices has been limited by the prohibitive cost of the device itself. Therefore, the objective of the conventional optimal PMU placement problem is …
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Understanding Problematic Media Use in Children and Youth with ADHD, Early Neurological Risk and a Community Sample: Exploring Parental Cognitions and Perspectives
… as more susceptible to problematic media use (PMU), less emphasis has been placed on understanding these vulnerable groups. Current theories of PMU draw from a psychopathology framework, aiming to distinguish normal variation from pathological behaviour. Measures like the Problematic Media Use …
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Event Detection and Visualization Based on Phasor Measurement Units for Improved Situational Awareness
… the new methods presented for the processing of PMU data, techniques for visualization of PMU data in its processed and unprocessed forms are described. A new technique based on graphical processing units (GPUs), developed to allow rendering speeds to match the relatively fast data rate of PMUs, …
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