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IEEE Transactions on Power Apparatus and Systems

Issue 1 • Date Jan. 1979

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Displaying Results 1 - 25 of 47
  • IEEE Transactions on Power Apparatus and Systems - Table of contents

    Publication Year: 1979, Page(s):c1 - 336-b
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    Freely Available from IEEE
  • IEEE Power Engineering Society

    Publication Year: 1979, Page(s): c2
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    Freely Available from IEEE
  • Publications of Interest

    Publication Year: 1979, Page(s):1 - 2
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  • Abstracts

    Publication Year: 1979, Page(s):3 - 12
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  • Torque Pulsation Minimization in a Variable Speed Inverter-Fed Induction Motor Drive System

    Publication Year: 1979, Page(s):13 - 18
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1181 KB)

    When supplied from conventional three phase inverters, three phase squirrel cage induction motors exhibit harmonic pulsating components of torque. These torque pulsations attain objectionable values during low frequency and in many cases dictate the satisfactory lower limit of speed range. In applications requiring uniform speed of rotation these pulsating torques need to be minimized. This paper ... View full abstract»

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  • Breakdown Characteristics for a Heated Busbar in a Gas-Filled Duct

    Publication Year: 1979, Page(s):19 - 25
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2031 KB)

    Breakdown was studied for a 50 mm gap between concentric cylinders at a pressure of 1 atmosphere. The inner cylinder was heated up to 120°C with the outer cylinder at 20°C. Heating caused the alternating and switching impulse breakdown voltages of SF to fall by about 15%; with the inner cylinder at 40°C, the fall was 7%. With the inner cylinder positive and without heating, spark conditioning c... View full abstract»

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  • A Generation Reallocation and Load Shedding Algorithm

    Publication Year: 1979, Page(s):26 - 34
    Cited by:  Papers (47)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1918 KB)

    The problem of rescheduling generators and shedding loads in an emergency state is formulated as a nonlinear optimization problem. The desired solution is a set of control actions which, when applied, removes all the constraint violations such as abnormal voltages and line overloads with a minimum of rescheduling and load shedding. View full abstract»

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  • Propagation on Polyphase Lossy Power Lines: A New Parameter Sensitivity Model

    Publication Year: 1979, Page(s):35 - 44
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2446 KB)

    The mathematical model of the transmission syst. em takes into account the dependence of the line and earth parameters on the frequency. The solution of the propagation matrix equations for a polyphase lossy power line, is obtained by applying modal analysis. In order to define the effects of parameter variations on modal quantities, a new sensitivity model is presented. The al gorithm for the cal... View full abstract»

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  • Step Potentials and Body Currents Near Grounds in Two-Layer Earth

    Publication Year: 1979, Page(s):45 - 59
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3533 KB)

    The equations customarily used in safety calculations for grounding electrodes assume that soil conductivity does not vary with depth. A more realistic model assumes that the soil consists of two horizontal layers of different conductivity. This may occur, for example, if a thin surface layer consists of wet soil, thawed soil, or concrete, and a thick layer of underlying soil is frozen, or consist... View full abstract»

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  • Circuit Breaker Standards and the Statistical Approach

    Publication Year: 1979, Page(s):60 - 65
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1525 KB)

    The increasing dependency of power circuit breaker insulation standards (i.e., switching and lightning surge ratings) on a statistical approach is discussed with particular emphasis on design considerations and testing. The mathematical meaning and significance of such aspects of Statistics as Reliability, Probability, and Confidence and their relationship to circuit breaker development are presen... View full abstract»

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  • Two-Dimensional Quasi-Stationary Temperature Rise in Multicable Configurations Under Arbitrary Cyclic Load

    Publication Year: 1979, Page(s):66 - 71
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    The quasi-stationary temperature field is computed for a buried multicable system under an arbitrary cyclic load. The technique is based upon the development of a discretized complex heat equation, relying on finite elements approach, solved by direct frontal solution for a sinusoidal load pattern. The response to an arbitrary pattern is then found by using Fourier analysis. This versatile simulat... View full abstract»

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  • Summary of a Guide for Determining the Maximum Electric Power Station Ground Potential Rise and Induced Voltage from a Power Fault

    Publication Year: 1979, Page(s):72 - 73
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (347 KB)

    Difficulties are experienced by telecommunication and protective relay engineers in determining the maximum power station ground potential rise, and/or induced voltages. Suitably rated protective devices are required for personnel safety and for the protection and continuity of service of wire line telecommunication facilities entering electrical power stations, or otherwise exposed to the influen... View full abstract»

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  • An Evaluation of the Methods of Finite Elements and Finite Differences in the Solution of Nonlinear Electromagnetic Fields in Electrical Machines

    Publication Year: 1979, Page(s):74 - 87
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4464 KB)

    In this paper, an evaluation of the methods of finite elements and finite differences, as applied to nonlinear magnetic field problems in electrical machines, is presented. The evaluation covers the aspects of effectiveness, numerical accuracy, modeling implementation considerations as well as computer storage and execution time requirements of the two methods. The evaluation includes static as we... View full abstract»

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  • Current Operating Problems Associated with Automatic Generation Control

    Publication Year: 1979, Page(s):88 - 96
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1766 KB)

    This paper is one of a series prepared by the Current Operational Problems (COPs) Working Group with the goal of focusing the attention of industry problem solvers on high priority problems faced by those who are involved in the actual operation of power systems. View full abstract»

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  • Automatic Contingency Selection

    Publication Year: 1979, Page(s):97 - 109
    Cited by:  Papers (233)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3254 KB)

    A fast technique has been developed for the automatic ranking and selection of contingency cases for a power system contingency analysis study. A contingency list is built containing line and generator outages which are ranked according to their expected severity as reflected in voltage level degradation and circuit overloads. An adaptive contingency processorcan be set up by performing sequential... View full abstract»

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  • Cross-Field Analysis of Capacitor Motor with Windings not in Quadrature, Extensions to 1- and 2- Phase Thereof

    Publication Year: 1979, Page(s):110 - 115
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1060 KB)

    Equations to predict the performance of single-phase induction motor with windings not in quadrature are developed based on a concept of representing a winding by two mutually perpendicular windings, using the cross-field theory. Since the capacitor motor is more general than any other motor in the family of single-phase and even two-phase induction motors, emphasis is thereby placed upon its calc... View full abstract»

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  • Multiple Layer Series Connected Winding Design for Minimum Losses

    Publication Year: 1979, Page(s):116 - 123
    Cited by:  Papers (84)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1876 KB)

    The classical one dimensional magnetic field and eddy current distribution ("proximity effect") within a series connected multiple layer coil is reexamined with regard to power losses withinthe windings. When the lengthand number of layers ina coilare fixed, the power dissipation within each layer can be minimized by choosing a specific radial thickness for each layer. Above or below this thicknes... View full abstract»

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  • Dynamic Stability of Long Transmission Systems with Static Compensators and Synchronous Machines

    Publication Year: 1979, Page(s):124 - 134
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2420 KB)

    This paper deals with the dynamic stability of long distance a.c. transmission systems operating at above 1 surge impedance loading and compensated entirely by automatically controlled shunt inductance device referred to as Static Compensators. Generalised system equations in the form X = AX, with a careful choice of state variables are developed via the subsystem concept and the eigenvalue techni... View full abstract»

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  • A Survey of Power System Control Center Justifications

    Publication Year: 1979, Page(s):135 - 140
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1758 KB)

    This paper investigates the rationale used by utilities to justify purchasing modem Power System Control Centers. The degree which economics plays in the justification was a primary study objective. This paper may serve as a future guide to others faced with the need to evaluate benefits of upgrading power system control facilities. Criteria identified during the study as potentially able to contr... View full abstract»

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  • The Theory of Neglecting Stator Transients

    Publication Year: 1979, Page(s):141 - 148
    Cited by:  Papers (56)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2882 KB)

    For more than four decades it has been thought that neglecting the so-called "ph terms" in Park's equations is equivalent to neglecting the electric transients due to the stator windings of a synchronous machine. Over the years, trial and error results have indicated that a more accurate prediction of synchronous machine performance could be obtained if the Aw(p6) terms in the stator voltage equat... View full abstract»

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  • DC and AC Thermal Stability of Oil Impregnated Paper

    Publication Year: 1979, Page(s):149 - 158
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2044 KB)

    Operating conditions which can lead a dc stressed oil impregnated paper, insulation to thermalinstability are analyzed. A computing method is developed for this purpose. Tests both on plane models and on cable samples verify the computed behaviour. View full abstract»

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  • Quantitative Evaluation of the Cost and Benefits Associated with Transformer Loading

    Publication Year: 1979, Page(s):159 - 164
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1676 KB)

    This paper reports the development of a method which quantitatively defines the total cost of owning and operating the transformer where the total cost includes both the capital cost and loss cost as well as the cost incurred due to the increased loss-of-life of transformers due to overloading throughout the expected life of the transformler. The resul ts establish an appropriate transfornier load... View full abstract»

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  • Nelson River HVdc Bipole-Two Part I - System Aspects

    Publication Year: 1979, Page(s):165 - 173
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2181 KB)

    The system aspects of the Nelson River HVdc bipole- two transmission is described. Extension of Manitoba's HVdc system is generally discussed and the paper covers in some detail the system studies, results, criteria, and philosophies related to the planning and overall specification of bipole-two. Frequent reference is made to bipole-one design and experience which effected the bipole-two requirem... View full abstract»

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  • Mathematical Model of Load Loss in Shell Form Transformers

    Publication Year: 1979, Page(s):174 - 180
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2084 KB)

    This paper describes the development of a mathematical model of load loss in shell form power transformers. Theoretical loss calculations are modified by regressing them against test data to obtain estimates of winding eddy loss and stray loss in tanks. While the specific model presented here applies only to shell form transformers, the method used to develop the model is general and can also be a... View full abstract»

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  • Stability of Synchronous Motors Supplied from Current Sourcce Inverters

    Publication Year: 1979, Page(s):181 - 186
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1527 KB)

    This paper presents an analysis and experimental verification of the operating point stability of a synchronous motor supplied from a current source inverter with simple frequency control of motor speed. The effects of magnetic saturation in the motor and of inverter imperfection are included in the analysis. In contrast with earlier analyses based on an ideal inverter, it is shown that the invert... View full abstract»

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Aims & Scope

This Transactions ceased production in 1985. The current retitled publication is IEEE Transactions on Energy Conversion and IEEE Transactions on Power Delivery, and IEEE Transactions on Power Systems.

Full Aims & Scope