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Analytical methods for power monitor...

Chan, Ting.

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Analytical methods for power monitoring and control in an underwater observatory.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Analytical methods for power monitoring and control in an underwater observatory./
Author:	Chan, Ting.
Description:	98 p.
Notes:	Adviser: Chen-Ching Liu.
Contained By:	Dissertation Abstracts International68-05B.
Subject:	Engineering, Electronics and Electrical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3265312
ISBN:	9780549038993

Analytical methods for power monitoring and control in an underwater observatory.
Chan, Ting.

Analytical methods for power monitoring and control in an underwater observatory. - 98 p.

Adviser: Chen-Ching Liu.

Thesis (Ph.D.)--University of Washington, 2007.

The algorithms developed in this research addresses challenges and difficulties for an underwater observatory system. The results presented in this dissertation should be applicable to similar underwater systems in the future.

ISBN: 9780549038993Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Analytical methods for power monitoring and control in an underwater observatory.
LDR:03664nam 2200313 a 45 001 939604
005 20110517
008 110517s2007 ||||||||||||||||| ||eng d
020 $a 9780549038993
035 $a (UMI)AAI3265312
035 $a AAI3265312
040 $a UMI $c UMI
100 1 $a Chan, Ting. $3 1263706
245 1 0 $a Analytical methods for power monitoring and control in an underwater observatory.
300 $a 98 p.
500 $a Adviser: Chen-Ching Liu.
500 $a Source: Dissertation Abstracts International, Volume: 68-05, Section: B, page: 3257.
502 $a Thesis (Ph.D.)--University of Washington, 2007.
520 $a The algorithms developed in this research addresses challenges and difficulties for an underwater observatory system. The results presented in this dissertation should be applicable to similar underwater systems in the future.
520 $a The study of the undersea environment requires the use of scientific instruments at the bottom of the ocean and in the water column to collect useful data. The traditional methods of conducting such studies by sending ships or using bottom instruments and moorings are not able to provide the necessary data over a long period of time due to weather and energy limitations. The objective of the North Eastern Pacific Time-Series Undersea Networked Experiment (NEPTUNE) program is to construct an underwater cabled observatory on the seafloor of the northeast Pacific Ocean off the coast of Washington, Oregon, and British Columbia, encompassing the Juan de Fuca Tectonic Plate. This system features over a few dozens of science nodes for the connection of scientific instruments that enhance our ability to conduct continuous ocean studies in this region. This dissertation investigates important design and implementation issues of the NEPTUNE power system.
520 $a The power system associated with the proposed observatory is unlike conventional terrestrial power systems in many ways due to the unique operating conditions of underwater cabled observatories including the high reliability requirements and low observability and controllability. These unique aspects of the NEPTUNE system lead to the development of new hardware and software applications that will provide an essential and efficient operation environment. In this dissertation, the solutions to some of the technical problems are proposed.
520 $a The design of the Power Monitoring and Control System (PMACS) allows PMACS to function in a similar way that Supervisory Control and Data Acquisition (SCADA) and Energy Management Systems (EMS) are used to monitor and control terrestrial systems. A Fault Location algorithm is developed to identify a backbone cable fault by solving nonlinear equations with only shore station measurements. The same approach can be applied to underground power systems. In order to handle the request from the science users to turn their loads on and off, a Load Management algorithm is proposed based on nonlinear optimization. This algorithm takes into account the different priorities of science node loads. The PMACS EMS modules require different parameters in the system model to provide accurate results. The effect of cable resistance variation due to the temperature of the seawater is investigated and an algorithm is developed for PMACS to update the resistance values using a quadratic programming technique.
590 $a School code: 0250.
650 4 $a Engineering, Electronics and Electrical. $3 626636
650 4 $a Engineering, Marine and Ocean. $3 1019064
690 $a 0544
690 $a 0547
710 2 $a University of Washington. $3 545923
773 0 $t Dissertation Abstracts International $g 68-05B.
790 $a 0250
790 1 0 $a Liu, Chen-Ching, $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3265312