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 43 for “"non-intrusive load monitoring"”.
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Innovations in non-intrusive load monitoring
A non-intrusive load monitor (NILM) measures power at a central point in an electrical system to monitor the operation of many connected loads. Non-contact power meters sense the electromagnetic fields surrounding a cable and reconstruct the currents in each conductor. This thesis presents a novel …
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Non-Intrusive Load Monitoring with Canopy Clustering
… about energy usage within the premises through Non-Intrusive Load Monitoring (NILM). The thesis provides a detailed description of the work undertaken to develop a novel method of load disaggregation within NILM to aid in the monitoring of energy usage and the provision of consumer feedback …
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Mathematical methods for non-intrusive load monitoring
… Thirdly, an algorithm to classify electrical loads on the basis of a subset of the DFT coefficients of load current is demonstrated. Finally, an embedded system that calculates DFT coefficients of measured current and makes this information available in convenient forms is considered.
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Shipboard applications of non-intrusive load monitoring
The Non-Intrusive Load Monitor (NILM) provides a method of measuring component performance and source power quality through a single point of entry in the power distribution system. A study was performed utilizing the NILM onboard three different ships (along with experimentation in the laboratory) …
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Improving shipboard applications of non-intrusive load monitoring
The Non-Intrusive Load Monitor (NILM) measures equipment performance by measuring and analyzing the source power to the equipment at a single point in the electrical system. Previous studies have proven the usefulness of the NILM system in characterizing the state of mechanical systems onboard U.S. …
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Shipboard fluid system diagnostics using non-intrusive load monitoring
… it is critical to have remote real-time monitoring and diagnostic capabilities. The pressure to reduce shipboard manning only adds to the difficulties associated with monitoring such systems. One diagnostic platform that is particularly well suited for use in such an environment is the …
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Time-frequency analysis techniques for non-intrusive load monitoring
… the features contained within the electrical load signals. A novel approach that is based on wavelet design was utilized to generate a wavelet library which was used to match each load signal to a specific wavelet using Procrustes and covariance analysis. In order to automate the load …
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Machine learning classification techniques for non-intrusive load monitoring
Non-intrusive load monitoring is the concept of determining the operational loads using single-point sensing. The features contained within the electrical load’s signal are used to identify a unique signature which is used by a machine learning classifier to automate the load identification …
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Shipboard fluid system diagnostics using non-intrusive load monitoring
… it is critical to have remote real-time monitoring and diagnostic capabilities. The pressure to reduce shipboard manning only adds to the difficulties associated with monitoring such systems. One diagnostic platform that is particularly well suited for use in such an environment is the …
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A framework for non-intrusive load monitoring and diagnostics
… systems places increasing demands on monitoring and diagnostic techniques. The non-intrusive load monitor (NILM) provides a low-cost, low-maintenance way to perform this monitoring and diagnostics from a centralized location. This work critically evaluates the current state of the NILM …
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Framework of non-intrusive load monitoring for shipboard environments
A Non-Intrusive Load Monitor (NILM) measures power at a central point in an electrical network in order to provide real-time energy management and equipment diagnostics. Results are presented from NILM systems installed aboard two US Coast Guard ships. The collected data is used for fault …
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Improving shipboard maintenance practices using non-intrusive load monitoring
(cont.) New casualty parameters were recorded and analyzed in an attempt to verify and expand on diagnostic software currently being developed for the vacuum aided sewage collection system. The analysis of the ships service compressed air system provides an example of what immediate diagnostics …
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Diagnostic indicators for shipboard systems using non-intrusive load monitoring
Field studies have demonstrated that the Non-Intrusive Load monitor (NILM) can provide real-time indication of the condition of electro-mechanical systems on board naval vessels. Results from data collected from engineering systems on board USCGC SENECA (WMEC-906), a 270-foot U.S. Coast Guard …
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A comprehensive system for non-intrusive load monitoring and diagnostics
Energy monitoring and smart grid applications have rapidly developed into a multi-billion dollar market. The continued growth and utility of monitoring technologies is predicated upon the ability to economically extract actionable information from acquired data streams. One of the largest …
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Solving Time-Alignment Challenges in Shipboard Non-Intrusive Load Monitoring
Non-intrusive load monitoring is the practice of using sensors placed on power cables to monitor downstream loads. A few sensors can provide monitoring of many different loads,making it very cost-effective. Ship requirements for redundancy require multiple generators,and some go beyond a typical …
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Hardware and software architecture for non-contact, non-intrusive load monitoring
The non-intrusive load monitor measures voltage and current in a single power line that supplies electricity to multiple devices. Signal processing algorithms are then used to separate the summed power usage into the individual power usage of each device. This thesis presents three new …
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Evaluation of Non-Intrusive Load Monitoring for shipboard cycling system diagnostics
The Non-Intrusive Load Monitor (NILM) is a device that utilizes voltage and current measurements to determine the operating schedule of all of the major loads on an electrical service. Additionally, the NILM can use its electrical measurements to diagnose impending failures in the mechanical …
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Diagnostic indicators for shipboard mechanical systems using Non-Intrusive Load Monitoring
This thesis examines the use of Non-intrusive Load Monitoring (NILM) in auxiliary shipboard systems, such as a low pressure air system, to determine the state of equipment in larger connected systems, such as the main propulsion engines. Using data collected on previously installed NILM's at the …
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Interpreting human activity from electrical consumption data through non-intrusive load monitoring
Non-intrusive load monitoring (NILM) has three distinct advantages over today's smart meters. First, it offers accountability. Few people know where their kWh's are going. Second, it is a maintenance tool. Signs of wear are detectable through their electrical signal. Third, it provides awareness of …
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