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IEE Proceedings C - Generation, Transmission and Distribution

Issue 1 • Date Jan. 1992

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Displaying Results 1 - 12 of 12
  • Principles of fault current limitation by a resonant LC circuit

    Publication Year: 1992, Page(s):1 - 6
    Cited by:  Papers (25)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (519 KB)

    Fault current reduction permits the interconnection of large networks without replacing circuit breakers, improves transient stability, and reduces the cost of equipment. The author investigates the reduction of fault current by the insertion of a resonant LC circuit into the transmission line. The device consists of a capacitor and a thyristor-switched inductance, tuned to the supply frequency. T... View full abstract»

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  • Fast super decoupled loadflow

    Publication Year: 1992, Page(s):13 - 20
    Cited by:  Papers (4)  |  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (664 KB)

    A constant matrix loadflow method is presented along with its fast version leading to the proposed fast super decoupled loadflow (FSDL) method. Gain matrices of the FSDL method are defined independent of rotation angles, and they differ only in their diagonal terms. Rotation angles are limited to the maximum value of -36 degrees . The slack-start procedure for efficiency is also suggested. These a... View full abstract»

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  • High-voltage line-dropping switching stresses

    Publication Year: 1992, Page(s):21 - 26
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (495 KB)

    Results are given of SF/sub 6/ circuit-breaker restrike waveforms during no-load, live-line switching operations on a 362 kV network, together with laboratory tests of the early dielectric recovery of the circuit breaker. It is shown that the tendency to restrike is assisted by the excellent interrupting ability of the breaker when the initial transient recovery voltage rises at the very slow rate... View full abstract»

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  • Corona discharge streamer model

    Publication Year: 1992, Page(s):31 - 38
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (584 KB)

    Starting from the motion of a charged particle in the electric field set up by the conductor system of a power transmission line, the author develops a model for the streamers released when the voltage stress at the surfaces of conductors leads to corona discharges from them. The frequency content of streamer pulses defines the frequency spectrum of radio noise-fields radiated from transmission li... View full abstract»

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  • Incorporation of wind energy conversion systems in conventional generating capacity adequacy assessment

    Publication Year: 1992, Page(s):47 - 56
    Cited by:  Papers (38)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (776 KB)

    Use of the wind for electric power generation is increasingly being considered as a possible generation alternative due to the rising interest in sources of energy that are renewable and without harmful environmental effects. Furthermore, difficult global economic and political conditions are tending to make countries depend more on their own resources and rely less on imported fuels. Wind is, how... View full abstract»

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  • Overall adequacy assessment of an electric power system

    Publication Year: 1992, Page(s):57 - 63
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (696 KB)

    Reliability evaluations of generating facilities, of composite generation and transmission systems, and of distribution system segments are conducted independently and the reliability indices obtained for each segment are used to make decisions. These assessments, however, often assume the other parts of the system to be fully reliable and capable of performing their intended function. This kind o... View full abstract»

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  • Towards static-security assessment of a large-scale power system using neural networks

    Publication Year: 1992, Page(s):64 - 70
    Cited by:  Papers (22)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (621 KB)

    A neutral-network-aided solution to the problem of static-security assessment of a large scale power system is proposed. It is based on a pattern-recognition technique where a group of neural networks is trained to classify the secure/insecure status of the power system for specific contingencies based on the precontingency system variables. The large dimensionality of the input data is reduced by... View full abstract»

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  • Capability chart for electrical power systems

    Publication Year: 1992, Page(s):71 - 75
    Cited by:  Papers (11)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (404 KB)

    An extension of the concept of the load supplying capability of an electrical power system is proposed, which involves drawing a capability chart. The method for obtaining such a chart is based on an optimisation model, which is repeatedly solved to obtain the points for the chart. The uncertainties which affect the nodal load forecasts are taken into account. The application of the method to a te... View full abstract»

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  • Maximum likelihood estimation of synchronous machine parameters and study of noise effect from DC flux decay data

    Publication Year: 1992, Page(s):76 - 80
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (387 KB)

    The authors present an evaluation of the performance of the maximum likelihood (ML) method when used to estimate the linear parameters of a synchronous machine model from the standstill time-domain decay test data. It is shown that a unique set of parameters can be obtained and the noise effects can be dealt with effectively when the ML estimation technique is used. The results also show that accu... View full abstract»

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  • Fast estimation of symmetrical components in real time

    Publication Year: 1992, Page(s):27 - 30
    Cited by:  Papers (12)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (200 KB)

    Methods for online calculation of the phasors of symmetrical components from the complex space-phasor in three phase power systems are presented. In this way the number of numerical operations can be cut by one third. The methods combine the suppression of higher frequencies and the separation of symmetrical components. Transfer functions obtained from the developed filter algorithms for the compl... View full abstract»

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  • Extremely fast economic load dispatch algorithm through modified co-ordination equations

    Publication Year: 1992, Page(s):39 - 46
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (340 KB)

    An innovative algorithm based on a set of modified co-ordination equations has been developed, which is claimed to be the fastest algorithm for the solution of the economic load dispatch (ELD) problem. Penalty factors involved in modified co-ordination equations are realised very elegantly with little computational effort from the knowledge of a base case fast decoupled load flow (FDLF) solution u... View full abstract»

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  • Fast and accurate technique for power system state estimation

    Publication Year: 1992, Page(s):7 - 12
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (368 KB)

    The proposed technique is based on the exact linearisation of the Cartesian co-ordinate formulation of nodal load flow equations. The complete Taylor series expansion is used to solve these equations while retaining the nonlinearity. In this technique, the Jacobian and Hessian matrices are kept constant, and hence need to be computed once only, at the beginning of the solution, and then stored in ... View full abstract»

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