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IEEE Computer Applications in Power

Issue 3 • Date July 1990

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Displaying Results 1 - 8 of 8
  • A generalized information management system applied to electrical distribution

    Publication Year: 1990, Page(s):9 - 13
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    A system solution approach to information management for electrical distribution that meets the requirements being imposed by industry trends and the electric utility customer is presented. The approach is based on three significant phenomena in the computer industry: the replacement of traditional mainframe computer solutions with networked microcomputer and workstation solutions; the emergence o... View full abstract»

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  • Optimization of diverse energy sources unit commitment in a real time environment

    Publication Year: 1990, Page(s):14 - 18
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (377 KB)

    In the early 1980s, diversification in energy sources, reduction in the price differential between gas and oil, and area security constraints made the process of selecting the most economical energy mix at Florida Power & Light (FPL) Co. too complex for the operator to evaluate using the standard unit commitment program. This prompted FPL to develop an extensive unit commitment program that accoun... View full abstract»

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  • Digital model power system

    Publication Year: 1990, Page(s):19 - 24
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    A method is presented for reproducing in the laboratory actual faults that have occurred in the field and generating worst-case-fault waveshapes for the actual power lines being protected. Digitally reproducing faults or system disturbances that caused undesired or unexplained results in the protection scheme is the key to the method. The faults can then be replayed through amplifiers and applied ... View full abstract»

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  • Real time T&D applications at Virginia Power

    Publication Year: 1990, Page(s):25 - 29
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (525 KB)

    Advances in the automation of the transmission and distribution (T&D) system at Virginia Power in the 1980s are described. Programs such as supervisory control and data acquisition (SCADA) and load management using a two-way automatic control system (TWACS) have reduced system losses and increased the reliability of service to the customer. Inhouse support of SCADA software has provided flexibilit... View full abstract»

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  • Graphical coordination program aids system relaying at Consumers Power

    Publication Year: 1990, Page(s):30 - 35
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (846 KB)

    Consumers Power Company, an investor-owned, combination (gas and electric) utility serving customers throughout most of Michigan's lower peninsula, is in the process of adding a 345/138 kV autotransformer bank, rated 300 MVA self-cooled, to one of its substations. Before a system modification of this scale can be completed, protective relay settings throughout the area must be reviewed. Consumers ... View full abstract»

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  • Advanced computer programs for power cable ampacity calculations

    Publication Year: 1990, Page(s):42 - 46
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    The Cable Ampacity Program (CAP), a set of user-friendly routines for IBM or compatible desktop computers is discussed. CAP includes a user-friendly front-end program, INPUT; a steady-state analysis program, SAMP; a transient analysis program, TAMP; support files for all programs; and graph programs for display of the steady-state and transient results. INPUT, SAMP, and TAMP are described.<> View full abstract»

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  • Adaptive relaying

    Publication Year: 1990, Page(s):47 - 51
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (473 KB)

    The concept of adaptive relaying is explained. The reasons for choosing adaptive relaying are examined, and various applications are described. These include load effect, cold load pickup, end-of-line protection, transformer protection, and automatic reclosing. The tradeoff between dependability and security of protection is discussed. The ability of computer relays to monitor themselves and to re... View full abstract»

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  • EMTP-a powerful tool for analyzing power system transients

    Publication Year: 1990, Page(s):36 - 41
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    The development of the Electromagnetic Transients Program (EMTP), a general-purpose computer program for simulating high-speed transient effects in electric power systems, is briefly described. To illustrate the EMTP's capabilities, three examples of its use are presented. As part of the planning activities of the Athabasca Electric System in northern Saskatchewan, Canada, EMTP studies were done t... View full abstract»

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