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 30 for “"Area monitoring"”.
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Measurements for Wide Area Monitoring, Protection, and Control systems: algorithms, instruments and architectures
… of the power systems. In this context, Wide Area Monitoring, Protection, and Control (WAMPAC) systems have emerged as a critical solution to enhance the real-time observability and responsiveness of modern power grids. WAMPAC systems take advantage of synchronized measurement networks to …
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Application of Wavelet Analysis and Cross-Correlation Techniques to Wide Area Monitoring of Power Systems
… (PMU) is a networked, GPS time-synchronized wide-area-monitoring device for modern power transmission systems. The recent and widespread adoption of these devices will provide a wealth of information about the dynamic state of the power system. However, the increasing number of measurement points …
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Scheduling And Resource Allocation In Wireless Sensor Networks
… wireless sensor networks are an active research area. Each sensor in a wireless sensor network has some pre-defined or on demand tasks such as collecting or disseminating data. Network resources, such as broadcast channels, number of sensors, power, battery life, etc., are limited. Hence, a …
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New Methods for Synchrophasor Measurement
… and distribution 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 …
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Hardware implementation of an automatic adaptive centralized under frequency load shedding
… hardware that enables the implementation of Wide Area Monitoring Protection and Control (WAMPC) application, this gives the opportunity for using industrial grade hardware to implement, evaluate these schemes and, therefore, to validate the recent research findings for industrial use. This study …
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Steady State Testing and Analysis of a Phasor Measurement Unit
… is important to obtain full benefit of the wide area monitoring systems. With the large number of installed PMUs it has become necessary to validate their performance and understand the limitations of each model. A test system was built by NIST in cooperation with NASPI to test for compliance to …
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Optimal Substation Coverage for Phasor Measurement Unit Installations
… 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 to find the minimum number …
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Distribution, Abundance, and Trophic Ecology of Anguilliform Leptocephali in the Northern Gulf of Mexico
… larval stages, which provides a means of monitoring the population dynamics of these otherwise cryptic and hard to study species. The goals of this study were to: 1) describe the distribution and abundance of anguilliform eel leptocephali across the northern Gulf of Mexico, and 2) examine …
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Age, Growth, Mortality, and the Effects of Trawling on Mortality of the Longspine Porgy, <i>Stenotomus caprinus</i>
… have been collected since 1972 on the Southeast Area Monitoring and Assessment Program (SEAMAP) surveys with a variety of GOM species, including Longspine Porgy, using trawl nets during groundfish surveys. In 2010-2011 five Longspine Porgy were obtained from Groundfish and Pelagic surveys at each …
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Power Grid Partitioning and Monitoring Methods for Improving Resilience
… in mitigating extreme events. Two distinct areas are focused on: a) improving grid performance after a severe disturbance, and b) enhancing grid monitoring to facilitate timely preventive actions. The first part of the dissertation presents a proactive islanding strategy to split the bulk …
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Exploring spatial heterogeneity of CPUE year trend and nonstationarity in fisheries stock assessment, an example based on Atlantic Weakfish (Cynoscion regalis)
… were constructed based on the NEAMAP (NorthEast Area Monitoring and Assessment Program) survey data and the ‘best' two models were selected based on the ability to capture nonlinearity and spatial autocorrelation. The selected models were then used to fit the other two survey data to compare …
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Techniques for Wide-Area State Estimation in Power Systems
… Operators (RTOs), a need for real-time wide-area system monitoring has arisen. The state estimator (SE) is the tool currently used in power systems for real-time monitoring. Because current SE techniques become operationally expensive on such large systems, it is beneficial to consider …
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Experimental analysis and modelling of an information embedded power system
… services such as real time measurement and monitoring are also driving the need for more bandwidth in the communication network and reliable communication infrastructure. These needs will grow further as new remote real-time protection and control applications become more feasible and …
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Identification, Analysis, and Control of Power System Events Using Wide-Area Frequency Measurements
… introspection. Only recently have dynamic, wide-area time synchronized grid measurements brought to light the complex relationships between large machines thousands of miles apart. These measurements are invaluable to understanding the health of the system in real time, for disturbances to the …
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Peak-ratio analysis method for enhancement of LOM protection using M class PMUs
… of utility systems throughout the world. Wide area monitoring systems, using synchronised phasor measurements, which are beginning to play an increasing role in monitoring and control in transmission networks, may offer opportunities to improve the performance of LOM protection in distribution …
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Identification and incorporation of quantitative indicators of ecosystem function into single-species fishery stock assessment models and the associated biological reference points
… fishing pressure. The summer and fall Southeast Area Monitoring and Assessment Program (SEAMAP) bottomfish trawl surveys were used to identify spatial and temporal indicators in the northwestern Gulf. Cluster analysis and nonmetric multidimensional scaling analysis identified four distinct …
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Robust GPS-based timing for phasor measurement units based on single-receiver and multi-receiver position-information-aided vector tracking
… utilize phasor measurement units (PMUs) for wide area monitoring and control. PMUs are considered to be one of the most critical technologies for the future and modernization of the power grid. This technology produces time-stamped voltage and current phasor measurements, allowing measurements …
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Hierarchical Decentralized Control for Enhanced Stability of Large-Scale Power Systems
… a paradigm shift with regards to system monitoring, operation and control. We envision that with the emergence of `active' distribution systems consisting of `prosumers' and localized energy markets, decentralized control methods in power systems are gaining a growing attention among …
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Design and characterization of next-generation tissue equivalent proportional counters for use in low energy neutron fields
… however, what hinders its use as a portable area monitor in such fields is its large physical size. For any given neutron field, an optimized TEPC design is one that can provide the same or better sensitivity and dose equivalent energy response relative to that offered by a standard spherical …
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Intraurban Spatiotemporal Variability of Ambient Air Pollutants across Metropolitan St. Louis
<p>Ambient air monitoring networks have been established in the United States since the 1970s to comply with the Clean Air Act. The monitoring networks are primarily used to determine compliance but also provide substantive support to air quality management and air quality research including …
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