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IEEE Transactions on Power Apparatus and Systems

Issue 6  Part 1 • Date Nov. 1975

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Displaying Results 1 - 25 of 34
  • [Front cover and table of contents]

    Publication Year: 1975, Page(s): c1
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    Freely Available from IEEE
  • Solar energy conversion and storage systems for the future

    Publication Year: 1975, Page(s):1926 - 1934
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1472 KB)

    The thesis of this paper is that the long-range solution to the energy woes of the world does not lie in any one particular approach and that several avenues should be explored simultaneously, with particular emphasis on the exploitation of solar energy in its various manifestations such as heat, winds, tides, and ocean thermal gradients. Research and development over the past thirteen years at Ok... View full abstract»

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  • The combined costs method for optimal economic planning of an electrical power system

    Publication Year: 1975, Page(s):1935 - 1942
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    A mathematical programming model is described for the economic planning of generation and transmission systems. By iterating between the simulation of operating conditions and the combined costs model the number of constraints are reduced by up to one hundredth of those required for early linear programming models. View full abstract»

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  • A field study of the short-line-fault component of transient recovery voltage

    Publication Year: 1975, Page(s):1943 - 1953
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1264 KB)

    The short-line-fault transient recovery voltage component is a critical factor in arc interruption. This paper is a study of 345kV field data, generated by a pulse test circuit, which develops inherent characteristics for the "bare" line. The modifying effects of terminal equipment on the shape of the saw-tooth component are demonstrated experimentally and theoretically. Test results are compared ... View full abstract»

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  • Research into a practical method to determine the probability of failure of an E.H.V. transmission line

    Publication Year: 1975, Page(s):1954 - 1961
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    In this paper different methods are proposed for estimating the risk of failure on lines caused by switching overvoltages. These methods correspond to various degrees of simplification. They are compared in study of a single particular case in order to deduce which the most practical one that gives satisfactory results. View full abstract»

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  • Power engineering education for future manpower needs

    Publication Year: 1975, Page(s):1962 - 1970
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (872 KB)

    Forces that influenced engineering education are briefly discussed to demonstrate their effect on electric power engineering courses. Estimates of manpower needs for the power industry in the next decade are presented realistically. Observations about the sources from whence these men and women will come are made. Finally some suggestions are given for required courses in electric power at the und... View full abstract»

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  • A three-phase differential relay for transformer protection

    Publication Year: 1975, Page(s):1971 - 1980
    Cited by:  Papers (21)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1064 KB)

    Established harmonic restraint differential relay concepts have been enlarged upon to provide a new static multiple-winding transformer differential relay. The resulting design includes simplification of the frequency selective circuits and new techniques for rapidly determining the harmonic content of the applied currents. The relay is shown to have improved sensitivity, to be responsive to inter... View full abstract»

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  • Observability in the state estimation of power systems

    Publication Year: 1975, Page(s):1981 - 1988
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    Power system static state estimators usually employ more measurements than the minimum number necessary to completely define the state of the system. This paper solves the problem of determining the best measurement to add to a given set. This is done by showing that the poorest observability is in the direction of the eigenvector associated with the smallest eigenvalue of an observability matrix.... View full abstract»

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  • General expression for positive switching impulse strength valid up to extra long air gaps

    Publication Year: 1975, Page(s):1989 - 1993
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    A new algebraic expression has been established for the critical sparkover voltage (CSOV) afair insulation submitted to positive switching impulses. By using the concept of the gap factor, the expression is found to be valid for all practical gap configurations in the distance range 1 to at least 30 m. Based on these considerations, an absolute limit of 2.4 MV is foreseen for the rated voltage of ... View full abstract»

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  • Freezing of low and medium viscosity pipe type cable filling oils

    Publication Year: 1975, Page(s):1994 - 2001
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    An investigation was conducted to determine the response of various high voltage cable oils to cryogenic temperatures. Typical cooling and thawing curves were developed, through experimentation, for Sun Oil Company #4 Cable Oil and Cosden Low Viscosity Polybutene Oil under various initial and boundary conditions. During the course of this research, the freeze breakup and the possibility of cable d... View full abstract»

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  • Qualification testing of class 1E switchgear per 1974 seismic standards

    Publication Year: 1975, Page(s):2002 - 2007
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1752 KB)

    The requirements for seismic qualification of Class 1E equipment have been continually evolving for the past several years. 1 Periodically, this evolution arrives at a plateau of such significance that the decision to evaluate the equipment at that level is worth the investment of material, time and money. The IEEE Std. 344-1971, having currently undergone working group revision to Draft Rev. 3, i... View full abstract»

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  • Stabilizing superconductors for power engineering applications

    Publication Year: 1975, Page(s):2008 - 2014
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    Exhibiting essentially zero resistivity at high current densities and large magnetic fields, modern superconducting materials offer intriguing possibilities in power engineering. However, in order to utilize this property in any large scale application, the superconductor must be stable during fault and overload transients in the total system. In order to know whether the superconductor itself is ... View full abstract»

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  • Electrical and mechanical design features of the 615 MVA generators for Grand Coulee Dam

    Publication Year: 1975, Page(s):2015 - 2022
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2296 KB)

    The design and construction of the Grand Coulee third power plant and its electromechanical equipment represent and unprecedented advancement in the field of hydroelectric power production. Without a doubt; a number of "firsts" and records will be achieved in its construction. This paper describes the new technology and concepts associated with the design and operation of the 615 MVA generators fo... View full abstract»

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  • Protective characteristics of current-limiting capacitor fuses

    Publication Year: 1975, Page(s):2023 - 2026
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    The use of current-limiting capacitor fuses is increasing because of their ability to limit current and energy, a requirement when fusing large capacitor banks. The performance of these fuses on capacitor discharge currents is described. Test data showing the current and energy limiting action of the fuses is presented. Criteria for evaluating fuse performance is suggested. View full abstract»

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  • Review of pressure relief test values

    Publication Year: 1975, Page(s):2027 - 2032
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    This report presents the results of a survey of electric service companies to determine the pressure relief venting reguirements for a failed surge arrester. Users were asked to supply the maximum and majority fault current values and time durations for present and future installations. An analysis of these results indicates that there is a need to increase pressure relief test current values in c... View full abstract»

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  • Bibliography of relay literature, 1972-1973

    Publication Year: 1975, Page(s):2033 - 2041
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (909 KB)

    The latest of a series of classified lists of power system relay references, begun in 1927, is presented. This Bibliography is a continuation of similar bibliographies of relay literature which have been published previously and are contained in the following volumes of this Transactions: 1927-1939, vol. 60, 1941; PP. 1435-1446 1940-1943, vol. 63, 1944; pp. 705-709 1944-1946, vol. 67, pt.I, 1948; ... View full abstract»

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  • Audible noise from power lines measurement, legislative control and human response

    Publication Year: 1975, Page(s):2042 - 2048
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (928 KB)

    This paper presents the special problems associated with audible noise from corona on high voltage power lines. Human response to this noise source is examined in the context of requirements for special noise measuring methods and instrumentation and considering existing and proposed legislation for noise control in various countries. The need for a new and more realistic evaluation by regulatory ... View full abstract»

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  • Reluctance DC generator with feedback and damper loop for output enhancement

    Publication Year: 1975, Page(s):2049 - 2056
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    The performance of brushless, two-phase, heteropolar inductor generators supplying dc loads through bridge rectifiers is improved by means of a compensating scheme employing current-feedback and stationary damper current-loops. Armature reaction upon unconstrained field current in the uncompensated generator is initially investigated. Then several feedback circuits are examined. Accurate solutions... View full abstract»

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  • EHV and UHV electrostatic effects: Simplified design calculations and preventive measures

    Publication Year: 1975, Page(s):2057 - 2073
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1384 KB)

    Approximate formulae are developed for predicting overhead transmission line electrostatic effects. These formulae, which are based on numerous computer simulations, allow slide rule calculations of sufficient accuracy for preliminary design work. Measures to reduce electrostatic effects, such as increasing conductor height or erecting shield wires are compared. Shield wires are found to be quite ... View full abstract»

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  • Measurement of short circuit load losses in large three phase power transformers using an alternating current comparator bridge

    Publication Year: 1975, Page(s):2074 - 2076
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    The application of a high-voltage alternating-current-comparator capacitance bridge to the measurement of the short circuit load losses of large three phase power transformers at rated current is described. Input of the transformer current to the bridge is provided through a 1000/1 ratio two-stage current transformer with a single turn primary winding Insulated for 50 kilovolts. Voltage input is p... View full abstract»

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  • Performance of electromagnetic shields in high voltage laboratories

    Publication Year: 1975, Page(s):2077 - 2083
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    The paper constitutes a systematic investigation into the calculation and measurement of electromagnetic shielding effectiveness of high voltage laboratories. Both electromagnetic field and interference measurements were carried out to assess the shielding effectiveness of the UHV hall of Hydro-Quebec Institute of Research. While satisfactory shielding was obtained below 1 MHz, the measurements em... View full abstract»

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  • Dynamic simulation of generator faults using combined abc and 0dq variables

    Publication Year: 1975, Page(s):2084 - 2091
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    A method is described for obtaining dynamic solutions for the electrical and mechanical transients that accompany balanced or unbalanced faults on an isolated synchronous generator. The method is illustrated with a system containing a prime mover plus governor, synchronous generator, manual or automatic voltage regulation, and reclosing feeder circuit breaker. A combination of abc and Odq variable... View full abstract»

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  • A simulation technique for studying real and reactive power flow patterns

    Publication Year: 1975, Page(s):2092 - 2100
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (848 KB)

    This paper presents a technique that simulates dispatch actions, such as, changing transformer and phase shifter tap settings and changing voltage magnitudes at voltage controlled buses in a power system. The changes of power injection at one or two system buses, which would simulate the required dispatch action, are calculated using the sensitivity matrix of the basic system state. The real and r... View full abstract»

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  • An approach for preventing system insecurities arising from line and transformer outages

    Publication Year: 1975, Page(s):2101 - 2114
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1312 KB)

    This paper presents an algorithm that improves steady state security of a power system. An objective function which includes power flows in the overloaded system elements and bus voltages that exceed the permissible limits is formulated. Weighting factors, obtained from the magnitudes and frequencies of the violations, are also used in this function. An optimal combination of controlling variables... View full abstract»

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  • Today's large generatorsߞDesign, performance and operation

    Publication Year: 1975, Page(s):2115 - 2123
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2200 KB)

    The increase in ratings of the largest generating units being placed in service continues to provide increasing challenges to the designers of large power generation equipment. These challenges have been met with design innovations in large steam turbinedriven generators resulting in a four fold increase in output in the past two decades, making possible the shipment of fully assembled generator s... 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