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IEE Proceedings C - Generation, Transmission and Distribution

Issue 4 • Date July 1989

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Displaying Results 1 - 6 of 6
  • Contingency cut-off criteria in transmission system adequacy assessment

    Publication Year: 1989, Page(s):215 - 221
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (688 KB)

    The authors present a comparative study of three contingency cut-off criteria which can be used in quantitative assessment of transmission system adequacy. An efficient approach designated as the selection procedure is described which provided better results than those obtained using a ranking method. The memory requirement, depending upon the number of lines and the contingency level up to which ... View full abstract»

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  • Engineering method for high-voltage substations lightning performance estimation

    Publication Year: 1989, Page(s):222 - 229
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (649 KB)

    A computer method for estimating the lightning performance of high-voltage substations is developed and modified for simple engineering applications in the substation design. The main substation element representation and the equivalent circuit choice are suggested. The method is illustrated by the example of a 110 kV substation with a cable entrance. Both shielding failures and lightning strikes ... View full abstract»

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  • Investigation of temperature and oil flow in EHV sealing ends

    Publication Year: 1989, Page(s):230 - 237
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (738 KB)

    The highest conductor temperature in a cable system often occurs within a cable accessory rather than in a straight cable run. It is therefore important to study temperatures in cable accessories, both with full-size experiments and using computer models. The authors report on a combined experimental and theoretical study of one such cable accessory, namely a typical 400 kV outdoor sealing end. Me... View full abstract»

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  • Contingency constrained economic dispatch algorithm for transmission planning

    Publication Year: 1989, Page(s):238 - 244
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (732 KB)

    Planning the long-term development of the CEGB's power system requires an economic assessment of alternative investment options. These may involve examining the economic consequences of different power station siting proposals, and/or of alternative transmission reinforcements. In either case it is necessary to estimate the economic savings which would accrue from different options. An operational... View full abstract»

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  • Line and shunt switching to alleviate overloads and voltage violations in power networks

    Publication Year: 1989, Page(s):246 - 253
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (823 KB)

    The authors present an algorithm to alleviate power system emergency conditions by network topology rescheduling. The technique, based on sensitivity analysis, makes use of some practical simplifications. The switching of shunt elements is determined from the changes on the reactive power injections that are necessary to alleviate voltage violations. A relieving line switching sequence is determin... View full abstract»

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  • Transient stability analysis of multimachine power systems by catastrophe theory

    Publication Year: 1989, Page(s):254 - 258
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (382 KB)

    Catastrophe theory is used to determine the transient stability regions of multimachine power systems. The stability region so obtained for a power system is valid for any fault location or system loading. The energy balance equation is first expanded in a Taylor series in terms of the clearing time and the system transient parameters. The energy function is then put in the form of a catastrophe m... View full abstract»

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