Abstract
Modernization in the U.S. Navy and U.S. Coast Guard (USCG) includes an emphasis on automation systems to help replace manual tasks and reduce crew sizes. This places a high reliance on monitoring systems to ensure proper operation of equipment and to maintain safety at sea. Recently developed noncontact current and voltage sensors, [1] combined with nonintrusive load monitoring (NILM) methods [2], provide a nonintrusive, low-cost, and easily installed package for machinery monitoring. This paper presents an application case study using these NILM enabled sensors installed on the main electrical feeders of the USCG Famous Class Cutter SPENCER. The system records the power demand on the ship and disaggregates this demand by identifying transients corresponding to loads changing states, e.g., a pump turning on. Results of this study showcase these novel sensors' ability to monitor both generation and load side equipment while at sea or in port and provide information useful for tracking operation schedules, energy usage, and maintenance needs.
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