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 22 for “"WAMS"”.
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WAMS-based Intelligent Load Shedding Scheme for Preventing Cascading Blackouts
… area using Wide Area Measurement Systems (WAMS) and initiates load shedding by removing loads whose locations are optimally determined by a sensitivity analysis. The amount and location of the load shedding depends on the location and size of the initiating event, making the proposed …
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The Frequency Monitor Network (FNET) Design and Situation Awareness Algorithm Development
Wide Area Measurements (WAMs) have been widely used in the energy management system (EMS) of power system for monitoring, operation and control. In recent years, the advent of synchronized Phasor Measurements Unit (PMU) has added another dimension to the field of wide-area measurement. However, the …
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Development of a Novel Validated Tool for Predicting Patient Adherence to Prescribed Medication
… (PALS), and the Wellbeing and Medications Scale (WAMS). A feasibility study was conducted with 16 patients at a GP surgery to identify limitations in research design and perform preliminary psychometric assessment. Issues with participant identification were highlighted, however, indications were …
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A Local Measurement Based Protection Methodology for Initiating Controlled Islanding in Power Systems
… are based on wide area measurement system (WAMS), which are either offline (Decision Tree) based that require time-consuming periodic offline simulation, or real-time based using a computationally intensive algorithm. The complexity in most of the real-time methods is due to the involved …
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Telecommunications for a deregulated power industry
… use of PMUs in wide area measurement systems (WAMS) are also studied. The highlight of this thesis is a close look at the characteristics of the power line channel by presenting a power line channel model and the use of digital modulation techniques like SS and OFDM, which help overcome the …
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Synthese und Charakterisierung dünner Hydrogelschichten mit modulierbaren Eigenschaften
… vornehmlich durch optische Methoden (SPR/OWS, WAMS, Ellipsometrie). Die Veränderung des E-Moduls in Abhängigkeit äußerer Parameter konnte mittels AFM untersucht werden. Die Reaktion der Schichten wurde gegenüber Temperatur, pH-Wert und Salzkonzentrationen getestet. Die charakterisierten Filme …
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Implementation of the Security-Dependability Adaptive Voting Scheme
… technology given Wide Area Measurements (WAMs) provided by Phasor Measurement Units (PMUs). The proposed implementation characteristics allow numerous existing protection practices to be used without changing the basic operation of the practices.
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Next Generation Frequency Disturbance Recorder Design and Timing Analysis
… in the field of wide-area measurement systems (WAMS). With the ever evolving technologies over the years and the need for a more cost effective solution for synchronized frequency measurements, the Frequency Monitoring Network (FNET) was developed and introduced by the Power IT laboratory at …
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Methodology for a Security-Dependability Adaptive Protection Scheme based on Data Mining
… methodology is based on Wide Area Measurements (WAMs) obtained with the aid of Phasor Measurement Units (PMUs). A Data Mining algorithm known as Decision Trees is used to classify the power system state and to predict the optimal security/dependability bias of a critical protection scheme.
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Two-Stage Fault Location Detection Using PMU Voltage Measurements in Transmission Networks
… the development of Wide Area Measurement 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 …
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An examination of attitudes toward women as managers in public schools
… with fewer years on all three subscales of the WAMS. The respondents with a Doctorate degree had more favorable attitude scores than those with lesser degrees on one subscale of the instrument. Those who had a liberal attitude toward women's rights had more favorable attitude scores on two …
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Practical Implementation of a Security-Dependability Adaptive Voting Scheme Using Decision Trees
… to determine the benefits and limitations of WAMS protection and implementation of the voting scheme. It is proposed that the delays injected into the existing protection schemes would have minimal effect on the voting scheme but must be accounted for when implementing power system controls …
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Wide Area Measurement Applications for Improvement of Power System Protection
… advancement of Wide Area Measurement Systems (WAMS), it is now possible to redesign network protection schemes to make them more adaptive and thus improve the security of the system. Often flagged for exacerbating the events leading to a blackout, the back-up distance protection relay scheme …
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New Methods for Synchrophasor Measurement
… infrastructure. Wide-area monitoring systems (WAMSs) utilizing synchrophasor measurements can help with understanding, forecasting, or even controlling the status of power grid stability in real-time. A power system Frequency Monitoring Network (FNET) was first proposed in 2001 and was …
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Propagation of Electromechanical Disturbances across Large Interconnected Power Systems and Extraction of Associated Modal Content from Measurement Data
… observed using a wide-area measurement system (WAMS). Observations of these waves both through simulation and measurement data have demonstrated several factors that influence the speed at which a disturbance propagates through a system. Results of this testing are presented which demonstrate …
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Power System Disturbance Analysis and Detection Based on Wide-Area Measurements
Wide-area measurement systems (WAMS) enable the monitoring of overall bulk power systems and provide critical information for understanding and responding to power system disturbances and cascading failures. The North American Frequency Monitoring Network (FNET) takes GPS-synchronized wide-area …
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Transient stability assessment of hybrid distributed generation using computational intelligence approaches
… coupled with Wide Area Monitoring System (WAMS) such as Phasor Measurement Unit (PMUs) have been shown to successfully model non-linear dynamics and predict stability limits in real time. To cope with the shortcoming of the analytical approach, a computational intelligence method based on …
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Describing functions for information channels subject to packet loss and quantization
… and navigation, Wide Area Measurement System (WAMS) control of power grids, and automobile networked subsystems control. As one would expect, demand on throughput grows to fill the available channel capacity; in a clean short-range RF setting, entire images may be transferred in each cycle, as …
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PMU-Based Applications for Improved Monitoring and Protection of Power Systems
Monitoring and protection of power systems is a task that has manifold objectives. Amongst others, it involves performing data mining, optimizing available resources, assessing system stresses, and doing data conditioning. The role of PMUs in fulfilling these four objectives forms the basis of this …
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