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IEE Proceedings - Generation, Transmission and Distribution

Issue 1 • Jan 1994

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Displaying Results 1 - 11 of 11
  • High-voltage fuse behaviour with varistor commutation

    Publication Year: 1994, Page(s):33 - 37
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (300 KB)

    Expulsion fuse operation using parallel connected ZnO varistors for current commutation offers new protection opportunities for this simple switching element. The advantages of low cost and full-range protection can be retained with the addition of current limitation and hence almost unlimited breaking capacity. Pad-mounted and cubicle applications may also be possible. The relations among varisto... View full abstract»

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  • Fast harmonic power flow calculation using parallel processing

    Publication Year: 1994, Page(s):27 - 32
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (392 KB)

    The paper presents a novel approach to the study of power system harmonics, in which advantage is taken of the fact that the coupling between harmonics of different orders is negligible. Parallel processing techniques are adopted for the first time to solve this problem and it is shown that considerable savings in computing timings can be achieved. The results of simulations performed with the pro... View full abstract»

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  • Brushless exciter model

    Publication Year: 1994, Page(s):61 - 67
    Cited by:  Papers (12)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (396 KB)

    The IEEE model of a brushless exciter can be found in many software packages for the simulation of power system behaviour. Yet the model is simplistic and does not represent the exciter alternator accurately. This paper describes the reasons for the inaccuracy of the IEEE representation and proposes an alternative model. Good agreement is obtained between results from a micromachine test system an... View full abstract»

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  • Application of GTO voltage-source inverter for tapping HVDC power

    Publication Year: 1994, Page(s):19 - 26
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (468 KB)

    The application of a 12-pulse GTO voltage-source inverter (VSI) for tapping a small amount of HVDC power (10-15%) is investigated. The control strategy for a parallel multiterminal DC power system is briefly reviewed. A comparison of VSI and line-commutated inverter characteristics indicates that the GTO VSI offers some technical advantages for tapping applications. To confirm this, detailed digit... View full abstract»

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  • Modelling risk in energy contracts with investor owned generation

    Publication Year: 1994, Page(s):75 - 80
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (400 KB)

    Investor owned generation capacity construction is being encouraged all over the world by both the current deregulatory climate and the need to defray the heavy capital demands of plant. Such schemes require contracts between investor and host utility on the price of electricity, and may include penalties for nondelivery, and compensation for failure to accept contracted energy. While it is widely... View full abstract»

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  • Magnetic field analysis of asymmetrical machines by finite element method

    Publication Year: 1994, Page(s):53 - 60
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (436 KB)

    Magnetic and electric asymmetry have been used by many electrical machine designers to develop useful devices. The main feature of such designs is the nonsinusoidal variation of the magnetic field with time. The effect of harmonics on the overall performance is normally studied analytically either by using the symmetrical components method or the rotating field concept. Both methods lead to a casc... View full abstract»

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  • Integer-linear-programming eigenvector-based approach for multipartitioning power system state-estimation networks

    Publication Year: 1994, Page(s):11 - 18
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (492 KB)

    Heuristic algorithms are developed to partition an observable power system state estimation (PSSE) network into two or more observable subnetworks. The proposed heuristic algorithms partition a spanning tree of an observable PSSE network and guarantee the observability of all the partitioned subnetworks. These partitioning algorithms are based on using an integer-linear-programming eigenvector-bas... View full abstract»

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  • Analysis of transformer-generator interaction in the harmonic domain

    Publication Year: 1994, Page(s):38 - 46
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (444 KB)

    The harmonic interaction between the synchronous generator rotor and stator and the electromagnetic transformer nonlinearities is simulated by a unified harmonic domain equivalent. Comparisons are made between conventional models and a detailed harmonic domain solution that incorporates the process of generator frequency conversion and magnetic saturation, multilimb transformer core saturation, el... View full abstract»

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  • Parallel processing of sparse power system equations

    Publication Year: 1994, Page(s):68 - 74
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (444 KB)

    Algorithms for parallel computation of the sparse matrix equations found in power system modelling are discussed and evaluated. A number of matrix factoring algorithms have been applied to a 60-busbar power system network with useful results. The greatest speed-up was achieved by a method that matches the number of parallel activities to the number of processors available. The PERT-based schedulin... View full abstract»

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  • Consideration of dependent outages in security-constrained adequacy evaluation of composite systems

    Publication Year: 1994, Page(s):47 - 52
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (436 KB)

    A security-constrained adequacy evaluation technique for composite power systems to include the effect on the adequacy indices of dependent outages of system components is presented. The effect of these outages on the reliability indices at different load levels is examined and compared. The resulting system indices can be used to provide a physical appreciation of the various factors that influen... View full abstract»

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  • Economic emission load dispatch with line flow constraints using a classical technique

    Publication Year: 1994, Page(s):1 - 10
    Cited by:  Papers (35)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (628 KB)

    An attempt is made to explore the feasibility of developing an approach to solve the power system economic emission load dispatch (EELD) problem with line flow constraints using a classical technique based on co-ordination equations. The inability of the classical technique to handle the line flow constraints so far is circumvented innovatively by expressing the line flows in terms of active power... View full abstract»

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