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IEEE Computer Applications in Power

Issue 3 • Date July 1994

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Displaying Results 1 - 8 of 8
  • Predicting steady-state instability

    Publication Year: 1994, Page(s):10 - 15
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (650 KB)

    The ability to know how much load can be met and how much power can be sold while maintaining a safe distance from the point of voltage collapse and steady-state instability is of great concern both in the real-time dispatch and during the operations planning and scheduling activities of power systems. This is particularly true in an increasingly deregulated electric utility industry where power s... View full abstract»

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  • Distribution automation strategy for the future-changing the momentum

    Publication Year: 1994, Page(s):16 - 21
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB)

    Distribution system automation is no longer just an attractive concept. For utilities facing the prospect of a more competitive deregulated environment, it has become a business necessity. Certain forms of distribution control systems were used by electric utilities as early as the 1960s. Both hardware and software have experienced massive improvements, and information technologies and architectur... View full abstract»

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  • Automating relay coordination

    Publication Year: 1994, Page(s):22 - 25
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (557 KB)

    The process of setting relays and checking the coordination between primary and backup relays has always been a time consuming process. Automation of various steps of relay setting and checking is easing the tedium of this process for engineers at Consumers Power company. This automation is performed by a series of macros written for use with the Computer-Aided Protection Engineering (CAPE) system... View full abstract»

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  • Expert system measures harmonics and EMC

    Publication Year: 1994, Page(s):26 - 29
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (577 KB)

    The effects of power system harmonics are becoming more and more important as the number of rectifier controlled motors, discharge lamps, and television equipment grows in industrial and utility power systems.The author describes how a modular expert system for measurement and analysis of power system harmonics and electromagnetic compatibility was developed. The system is capable of sampling up t... View full abstract»

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  • Real-time digital simulator for protective relay testing

    Publication Year: 1994, Page(s):30 - 35
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    The Western Area Power Administration (WAPA) recognized that real-time testing of protection relays is needed for a full evaluation of different relaying products considered for future use on the WAPA system. In terms of protective relaying, some important sections of the WAPA system have introduced several real challenges in deciding which relaying product will best suit the given application. Th... View full abstract»

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  • Control performance analysis of interconnected power systems

    Publication Year: 1994, Page(s):36 - 40
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (543 KB)

    Automatic generation control (AGC) programs at Saudi Consolidated Electric Companies (SCECO) identify how various plant and system parameters affect reserve capacity and how frequency bias settings influence AGC response, system time error, and inadvertent interchange. Three methods of control for correction of system time error and inadvertent interchange are analyzed with regard to their applica... View full abstract»

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  • POWERCOACH-an electricity trading advisor

    Publication Year: 1994, Page(s):41 - 46
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (601 KB)

    This article presents an overview of the changes taking place in the electric utility industry and goes on to describe the characteristics of existing software packages used in operations planning and the need for a change in the approach to operations planning and management. The article describes a solution for some of the needs emerging in the near term and offers some possibilities for future ... View full abstract»

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  • Real-time monitoring of the TVA power system

    Publication Year: 1994, Page(s):47 - 51
    Cited by:  Papers (19)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (715 KB)

    The Tennessee Valley Authority (TVA) is experimenting with one of the many concepts for the uses of phasor measurements, that of utilizing phasor measurement units (PMUs) as a state estimation system. However, the term state estimation no longer applies; what is being performed is a state determination in near real-time.<> View full abstract»

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