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Power Engineering Review, IEEE

Issue 4 • Date April 2002

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Displaying Results 1 - 25 of 81
  • [Front cover]

    Publication Year: 2002 , Page(s): c1
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  • IEEE Power Engineering Society

    Publication Year: 2002 , Page(s): c2
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  • IEEE Power Engineering Review

    Publication Year: 2002 , Page(s): c2
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  • Contents

    Publication Year: 2002 , Page(s): 1 - 2
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  • Presient's Message

    Publication Year: 2002 , Page(s): 3
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  • Forum

    Publication Year: 2002 , Page(s): 4
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  • 2002 North American Power Symposium Call for Papers

    Publication Year: 2002 , Page(s): 4
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  • 2002 Winter Meeting Awards

    Publication Year: 2002 , Page(s): 5 - 11
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  • Winter Meeting Review

    Publication Year: 2002 , Page(s): 12 - 17
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  • Sensing Switchboard Arc Faults

    Publication Year: 2002 , Page(s): 18 - 27
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (4527 KB) |  | HTML iconHTML  

    In the late 1970s, the Navy recognized that electrical fires were becoming a major problem in submarines. Approximately three fires per year were occurring in the main electrical distribution switchboards across the submarine fleet. These fires have a major impact on mission readiness and could potentially cause loss of life and ship. In three-quarters of a second, the current from the smallest shipboard generator can bum a fist-sized hole in the side of a switchboard. The damage initially increases exponentially with time, limited only by available current from the generators. The Johns Hopkins University Applied Physics Laboratory (JHU/APL) worked with the Navy to design two basic arc fault detection (AFD) and continuous thermal monitoring (CTM) systems. The first systems were designed using all military- specification (Mil-Spec) hardware. At that point in time, Mil-Spec hardware greatly increased system reliability but it drove up the system cost. The most recent systems were designed using commercial-off-the-shelf (COTS) assemblies and parts and are cost effective for commercial use. These systems have proven effective in 450 V ac, 4,160 V ac, and 700 V dc switchboards. The timing on the systems is adjustable to allow for optimum usage with air circuit breakers or sealed breakers. While the AFD/CTM systems have seen extensive use in military ships, they are equally suited for the protection of all types of critical switchboards. Commercial ships, power generation facilities, power distribution switchboards, hospitals, web hosting facilities, etc., could all benefit from the increase in power reliability offered by this type of technology. These systems can be included in the original design of the switchboard or installed in existing switchboards with equal ease. At this time, JHU/APL is interested in licensing these systems for commercial applications. View full abstract»

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  • Brazilian Energy Crisis

    Publication Year: 2002 , Page(s): 21 - 24
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    With deregulation and the privatization processes in progress, there were high expectations that the private sector would invest in generation and transmission, but this did not occur. The shortage of generation was exacerbated by drought conditons that deteriorated reservoir levels. These circumstances led to an increase of the risk of an energy shortage. Plans are now being implemented that take measures to assure a proper balance of generation and consumption in the near and long-term future. View full abstract»

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  • Explaining Power System Operation to Nonengineers

    Publication Year: 2002 , Page(s): 25 - 27
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2321 KB) |  | HTML iconHTML  

    It is sometimes difficult to explain how a power system works, especially for people who have not studied electrical engineering. This article shows how the interactions of a power system and its components can be explained using the parallel with a tandem bicycle. The active power balance in the power system is modeled by the parallel of keeping a constant speed of the bike, while the reactive power balance is represented with the fact that the bike has to be kept on the road without overturning. Consider a long tandem bicycle. The bike is made of flexible material, and the chains between the different sprockets under the different cyclists are slightly elastic. When the bike is standing still, all the pedals on one side of the bike will be at exactly the same position, e.g., at the bottom position. Assume also that the bike is run on a flat, straight road, and the aim is to keep a constant speed of the bike and the bike should be kept in an upright position. The wheel losses and air resistance are neglected. Many functions in the power system can be illustrated with the mechanical parallel of a tandem bike that is kept running at a constant speed (constant frequency) and in an upright position (voltages at 1 pu). The parallel gives a good visualization of phenomena such as active power balance, frequency control, asynchronous machine slip, reactive power balance, and voltage control. View full abstract»

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  • PES News

    Publication Year: 2002 , Page(s): 28
    Cited by:  Papers (3)
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  • PES Meetings

    Publication Year: 2002 , Page(s): 29
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  • 2002 Summer Meeting Preview

    Publication Year: 2002 , Page(s): 30 - 37
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  • UPEC 2002 Preview

    Publication Year: 2002 , Page(s): 38
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  • Calendar

    Publication Year: 2002 , Page(s): 39 - 41
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  • 2002 Large Engineering Systems Conference on Power Engineering

    Publication Year: 2002 , Page(s): 41
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  • Technical Committee News

    Publication Year: 2002 , Page(s): 42 - 43
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  • 2002 Conference on Power Systems and Communication Systems Infrastructures for the Future

    Publication Year: 2002 , Page(s): 43
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  • How to Organize Research Consortia [Education/Industry Relations]

    Publication Year: 2002 , Page(s): 44 - 47
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  • People

    Publication Year: 2002 , Page(s): 48 - 49
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  • 2002 International Conference on Power System Technology

    Publication Year: 2002 , Page(s): 49
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  • Indstitutions & Organizations

    Publication Year: 2002 , Page(s): 50 - 51
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  • MedPower 2002 Call for Tutorial, Session, and Panel Programs

    Publication Year: 2002 , Page(s): 51
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