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IEEE Transactions on Power Apparatus and Systems

Issue 1 • Date Jan. 1968

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Displaying Results 1 - 25 of 40
  • IEEE Transactions on Power Apparatus and Systems - Table of contents

    Publication Year: 1968, Page(s): c1
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    Freely Available from IEEE
  • IEEE Power Group

    Publication Year: 1968, Page(s): c2
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    Freely Available from IEEE
  • Announcement [proposed publication schedule]

    Publication Year: 1968, Page(s):1a - 2a
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  • Influence of Phase Connection and Terminal Conditions on Natural Frequencies of Three-Phase Transformer Windings

    Publication Year: 1968, Page(s):1 - 12
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1952 KB)

    With the increasing use of extra high-voltage transmission in power system expansion, the manufacturers of power apparatus and the electric utilities are studying the nature of overvoltages in power systems due to lightning and, in particular, switching operations. For such analyses, knowledge of the natural frequencies of the windings of transformers under a wide variety of conditions is importan... View full abstract»

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  • Lightning Performance of Transmission Lines in Tokyo Area

    Publication Year: 1968, Page(s):13 - 23
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1713 KB)

    This paper presents the results based on detailed accumulation of lightning performance data on 140- and 250-kV lines in the Tokyo area. Data are arranged for the yearly variation of outage and the distribution of flashovers. The former changes through a rather wide range; the latter indicates the concentration of outage. The result of the investigation signifies that expression by means of an ave... View full abstract»

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  • Electrostatic Unbalance of Untransposed Single Circuit Lines

    Publication Year: 1968, Page(s):24 - 34
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1775 KB)

    This study is the continuation of research concerning electromagnetic and electrostatic unbalances of untransposed overhead lines.[1]-[6] The purpose of this investigation is to apply symmetrical component analysis to evaluate approximate expressions for ground displacement and negative sequence electrostatic unbalance factors of single circuit lines. View full abstract»

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  • Corrosion Aspects of HV DC on Buried Telephone Plant

    Publication Year: 1968, Page(s):35 - 40
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1039 KB)

    High-voltage direct-current (HV dc) transmission is proposed by the Bonneville Power Administration (BPA) to transmit power from Oregon to southern California, via a balanced line. Balanced transmission lines pose little or no corrosion problems to buried lead telephone cables. However, because of the use of ground return under fault conditions or scheduled line repairs, the corrosion aspects of c... View full abstract»

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  • Optimum Control of Reactive Power Flow

    Publication Year: 1968, Page(s):40 - 48
    Cited by:  Papers (53)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2014 KB)

    The general problem of minimizing the operating cost of a power system by proper selection of the active and reactive productions is formulated as a nonlinear programming problem in accordance with previous work by Carpentier of Electricit┬┐┬┐de France. This general problem is particularized to the minimization of transmission line losses by suitable selection of the reactive productions and transfo... View full abstract»

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  • Reactive Power and Its Control in a Large Metropolitan Electric Supply System

    Publication Year: 1968, Page(s):49 - 52
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (754 KB)

    In large metropolitan systems, the magnitude of reactive power can become so great that controlling it and system voltage demands more than the ordinary requirements in equipment and operating techniques. On the Consolidated Edison system, one of the major problems concerns an excess of charging Mvars from high-voltage cables during light load periods. At the outset this would seem to indicate tha... View full abstract»

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  • Special Cases of Orthogonal Networks - Mesh and Nodal Networks

    Publication Year: 1968, Page(s):53 - 66
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3085 KB)

    The conventional mesh and nodal methods, their theories, and their algorithms are examined from an entirely new direction. This new direction, or viewpoint, assumes both methods to be special cases of the orthogonal network theories and methods. A deeper and broader understanding of the conventional methods and the topological tools that they employ are thereby obtained. View full abstract»

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  • On-Line Digital Computer Application Techniques for Complex Electric System Dispatch

    Publication Year: 1968, Page(s):67 - 73
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1607 KB)

    The design, the implementation of, and the operating experience with a large-scale digital computer system used for optimum scheduling and on-line control of a complex hydro-thermal electric utility system is discussed. Dispatch techniques are outlined which produce optimal scheduling of steam, stored hydro, pumped hydro, and run-of-river hydro generation and economy interchange over a 32-hour per... View full abstract»

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  • Digital Simulation of Multimachine Power Systems for Stability Studies

    Publication Year: 1968, Page(s):73 - 80
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1606 KB)

    A digital simulation technique suitable for detailed analysis of both large and small disturbances on extensive power systems is presented. The analysis employs a hybrid reference frame for statement of the problem and for its solution. The equations of the interconnecting network are expressed with regard to a synchronously rotating common reference frame and are treated with the aid of matrix me... View full abstract»

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  • Formation of the Coefficient Matrix of a Large Dynamic System

    Publication Year: 1968, Page(s):80 - 83
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (802 KB)

    The coefficient matrix for the set of first-order differential equations that describe a dynamic system is formed from the block diagram or equations that describe the system. The method for accomplishing this is described in terms of matrix equations. Then the derivative of this coefficient matrix with respect to one of the system parameters is found in terms of the matrices used to form it. The ... View full abstract»

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  • Determination and Analysis of Data for Reliability Studies

    Publication Year: 1968, Page(s):84 - 100
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3530 KB)

    Methods for transmission and distribution system reliability analysis currently being developed and used require that the expected values of component outage rates and outage durations be known. The paper describes how the required component parameters can be estimated from field data. Also described are methods of placing confidence limits on the parameters estimated. The methods presented were d... View full abstract»

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  • History and Design Parameters of High-Pressure, Pipe-Type Cables in the Western Hemisphere Operating at 69 kV and Above

    Publication Year: 1968, Page(s):100 - 121
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2940 KB)

    THE FIRST pipe-type cable in the Western Hemisphere was a 2000-foot long experimental installation at the Plymouth Meeting Substation of the Philadelphia Electric Company in 1932. The first commercial installation was energized in 1935 in Baltimore, Md., as a part of the electrification program of the Pennsylvania Railroad. There were a few lines installed during the Depression and War years. Sinc... View full abstract»

    Freely Available from IEEE
  • Application of Heat Exchangers to Existing High-Pressure, Oil-Filled, Pipe-Type Cable Lines

    Publication Year: 1968, Page(s):122 - 128
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5228 KB)

    The design and installation of six air-cooled heat exchangers to increase the capacity of existing double circuit pipe-type cable lines was completed on an emergency basis in ten months. Design increase in capacity ranges from 26 to 43 percent above the self-cooled rating. A method was developed for making connections to the cable pipe using liquid nitrogen to freeze the cable oil, a technique of ... View full abstract»

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  • The Cooling of Underground EHV Transmission Cables

    Publication Year: 1968, Page(s):129 - 134
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3290 KB)

    Proposed cable cooling methods to increase the heat dissipation and rating of underground EHV cables are described. The factors governing the design of water cooled cable systems, obtained from an electrical analog, are presented and discussed together with both steady-state and transient operating conditions. Special cooling methods for cable joints are investigated and modifications to construct... View full abstract»

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  • Dielectric Tests for EHV Transformers

    Publication Year: 1968, Page(s):135 - 145
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2908 KB)

    Specific proposals for revision of dielectric tests for EHV power transformers are made. An objective is improved operating reliability by specifying tests which are more compatible with service requirements. Impulse and switching surge tests are coordinated independently with lightning arrester characteristics. Low-frequency tests are disassociated from transient voltage requirements and are rela... View full abstract»

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  • Lightning Protection of 230-kV Stations by Pipe Gaps

    Publication Year: 1968, Page(s):145 - 154
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3096 KB)

    The impulse, switching surge, and 60-cycle breakdown characteristics of a pipe gap with an effective length of 18 feet and 36-inch spacing have been determined and the predischarge current for impulse surges measured. Superior protective characteristics of pipe gaps as compared with rod gaps for protecting 230 kV transformers against steep lightning surges are demonstrated. A pipe gap, developed f... View full abstract»

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  • Switching Surge Insulation Coordination: Lightning Arresters

    Publication Year: 1968, Page(s):154 - 162
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3205 KB)

    Methods to determine the protection assured by a lightning arrester with reference to switching surge stress are discussed from a statistical point of view. Two methods are examined: the first considers the lightning arrester as a means to reduce the cumulative frequency of surge distribution, the second considers the arrester as a means to reduce the discharge probability of the insulation to be ... View full abstract»

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  • Power Line Carrier on Insulated Bundle Subconductors of DC and AC Transmission Lines

    Publication Year: 1968, Page(s):162 - 173
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2620 KB)

    A system of power line carrier communication, utilizing insulated bundle subconductors and having an attenuation of about 0.1 dB/mi at 100 kHz, is described. Merits and disadvantages of this unconventional method are discussed. Push-pull coupling to the subconductors of one bundle is shown to exhibit an inherent property of high rejection of substation noise, a feature of particular interest for d... View full abstract»

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  • Effects of Noise on Transfer-Trip Carrier Relaying

    Publication Year: 1968, Page(s):173 - 179
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2792 KB)

    A test method is described for the measurement of the probability of error due to noise in transfer-trip (TT) relaying using power line carrier. Noise levels recorded on 230-kV carrier installations are given to permit the interpretation of the measured error probabilities in terms of reliability and security. Three possible applications of the method are demonstrated: 1) finding the required bias... View full abstract»

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  • Insulated Overhead Ground Wires - Protective Carrier Relaying Investigations

    Publication Year: 1968, Page(s):179 - 187
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2012 KB)

    The results of an extensive field investigation of the use of a single insulated overhead ground wire for protective carrier relaying are summarized and discussed. Transfer-trip relaying channels using either a single, continuous insulated ground wire or short insulated sections at each end of the line as carrier couplers are shown to be practicable. Balanced-pair operation of two insulated ground... View full abstract»

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  • A Fast Response Instrument for Measurement of Power System Phase Angles

    Publication Year: 1968, Page(s):187 - 189
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1670 KB)

    A phase-angle measuring device is described which has a response time of one cycle of the signals whose phase angles are being measured. It has an adjustable full scale range which allows high-accuracy readings of small phase angle changes. An output is provided for continuous, fast response recording of phase angle changes suitable for use on an oscillograph. Some test results using the device ar... View full abstract»

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  • Effect of High-Speed Rectifier Excitation Systems on Generator Stability Limits

    Publication Year: 1968, Page(s):190 - 201
    Cited by:  Papers (56)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3941 KB)

    A device to provide a signal proportional to changes in generator speed has been developed by Ontario Hydro. Field tests have been performed to demonstrate that use of this signal with a high-speed rectifier excitation system results in dynamic stability limits which approximate those which can be obtained with a zero reactance generator. Transient stability limits are greater than those obtainabl... 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