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IEE Proceedings C - Generation, Transmission and Distribution

Issue 3 • Date May 1991

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Displaying Results 1 - 11 of 11
  • 33rd Hunter Memorial Lecture: The challenge to UK power engineers

    Publication Year: 1991, Page(s):173 - 184
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1589 KB)

    The privatisation of the electricity supply industry in the UK and the impending changes in the European market in 1992 represent new challenges to UK power engineers. In addition, there are new markets to be served in the developing world. The resultant problems and opportunities are the theme of the 1990 Hunter Memorial Lecture. The way in which power engineers have tackled changing markets and ... View full abstract»

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  • Capacitance requirements for three phase self-excited reluctance generators

    Publication Year: 1991, Page(s):193 - 198
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    A direct method to find the capacitance requirements for a three phase self-excited reluctance generator under any load or speed is introduced. Expressions for the load angle as well as for the minimum value of the excitation capacitance are derived. It has been found that there is a cut off speed, above which no excitation is possible no matter what the terminal capacitance value. Expressions for... View full abstract»

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  • Measurement of eddy-current damping of small synchronous generator with two types of cylindrical solid rotor

    Publication Year: 1991, Page(s):199 - 206
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (700 KB)

    An experimental model is used to represent a generator, the solid rotor of which is hunting about synchronous speed. The eddy-current damping factor, and hence the losses in the rotor, are measured at different stages in the construction of two different forms of rotor to assess the effect of the various components such as wedges, end rings and copper damper cage. It is found that a well-connected... View full abstract»

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  • Ranking of line outages in an AC-DC system causing overload and voltage problems

    Publication Year: 1991, Page(s):207 - 211
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (448 KB)

    An efficient noniterative method for ranking line outage contingencies in an AC-DC system based on overload and voltage deviation performance indices is developed. The method is based on the calculation of complex line outage current compensations using a coupled AC-DC load flow Jacobian matrix. The proposed method is further extended for the calculation of line outage distribution factors which c... View full abstract»

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  • Efficient economic dispatch algorithm for thermal unit commitment

    Publication Year: 1991, Page(s):213 - 217
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (379 KB)

    The authors presents a simple and efficient economic dispatch algorithm suitable for unit commitment. It also caters for any combination of polynomial cost functions. The algorithm reduces the economic dispatch into an equivalent lossless problem from which solutions are easily obtained and analysed. The equivalent lossless problem enables the generators whose outputs violate their limit constrain... View full abstract»

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  • New findings of convergence properties of fast decoupled load flow algorithms

    Publication Year: 1991, Page(s):218 - 220
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (208 KB)

    The authors presents the result of an extensive study of several typical power systems to explore a fast decoupled load flow (FDLF) model that can exhibit the best convergence property for both well-behaved and ill-conditioned systems. An attempt is made to examine the relative importance of several parameters, such as line series resistances, shunt reactances and transformer tappings. Results rev... View full abstract»

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  • Efficient method for calculating power system production cost and reliability

    Publication Year: 1991, Page(s):221 - 227
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (530 KB)

    The Booth-Baleriaux piecewise-linear method of calculating power system production cost and reliability is extended to include a piecewise-quadratic representation of the equivalent load duration curve. Grid increment size can be chosen without dependence on generator capacities. Twenty or fewer grid increments yield an execution speed and an accuracy that are comparable with the method of cumulan... View full abstract»

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  • New method for monitoring and protection of high voltage switchyards

    Publication Year: 1991, Page(s):228 - 232
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (432 KB)

    The REMMIT (remote magnetic field monitoring instrument transformer) system, a new method for the monitoring and protection of electrical networks, is described. The most significant aspect of this system is that by using remote magnetic field sensors the entire monitoring and protection function is physically and electrically isolated from the network under surveillance and hence cannot contribut... View full abstract»

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  • Hybrid approach for reliability evaluation of composite generation and transmission systems using Monte-Carlo simulation and enumeration technique

    Publication Year: 1991, Page(s):233 - 241
    Cited by:  Papers (35)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (808 KB)

    A hybrid approach using Monte-Carlo simulation and an enumeration technique for the reliability evaluation of large scale composite generation-transmission systems is presented. The method is suited to the analysis of large systems and can be used to include multi-state representation of generating units. Studies presented illustrate that derating-adjusted two-state models for generating units can... View full abstract»

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  • Heuristic multi-area unit commitment with economic dispatch

    Publication Year: 1991, Page(s):242 - 252
    Cited by:  Papers (21)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (762 KB)

    An improved multi-area unit commitment and economic dispatch algorithm is proposed. The approach supplements the traditional dynamic programming unit commitment with heuristic adjustments to refine the commitment schedule in each area. A global economic dispatch scheme coordinates the transactions between areas. A new tie-line constraint checking is included which is simple and effective. The over... View full abstract»

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  • New algorithm for diakoptical static state estimation

    Publication Year: 1991, Page(s):185 - 192
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (608 KB)

    A new and efficient diakoptical static state estimation algorithm is proposed for a power system. The main objective of developing this algorithm was to obtain an estimator with an improved performance in terms of robustness, accuracy, online CPU time, core memory occupation, intercomputer data transfer, scope for sparsity exploitation, and localisation of bad data effect. In the developed method,... View full abstract»

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