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IEEE Transactions on Power Apparatus and Systems

Issue 2 • Date Feb. 1969

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Displaying Results 1 - 17 of 17
  • IEEE Transactions on Power Apparatus and Systems - Table of contents

    Publication Year: 1969, Page(s): c1
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    Freely Available from IEEE
  • IEEE Power Group

    Publication Year: 1969, Page(s): c2
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  • Modulating Inverter System for Variable-Speed Induction Motor Drive (GM Electrovair II)

    Publication Year: 1969, Page(s):81 - 85
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3068 KB)

    The induction motor control system of the battery- powered Electrovair II, where a thyristor (controlled rectifier) modulating inverter supplies the three-phase variable frequency and modulates the voltage level as required by the induction motor is described. Electrovair I, which preceded Electrovair II, used separate power circuits to perform the functions of voltage-level control and frequency ... View full abstract»

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  • The GM High-Performance Induction Motor Drive System

    Publication Year: 1969, Page(s):86 - 93
    Cited by:  Papers (22)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2894 KB)

    The recent advances in the power handling capacity of semiconductor devices make it possible to replace dc and ac commutator machines for variable-speed applications by high-speed, lightweight, squirrel-cage induction motors. This paper describes a controlled slip-frequency system which eliminates the low-starting torque, low-power factor, and the low efficiency at lower speeds, normally associate... View full abstract»

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  • Conditions of Maximum Arc Energy in Operation of Current-Limiting Fuses

    Publication Year: 1969, Page(s):94 - 99
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1376 KB)

    The importance of reproducing the conditions of maximum energy released within the interrupting arc is fundamental in proving the short-circuit breaking capacity of fuses in the full range of operating currents. This paper illustrates the conditions for maximum energy release in low-voltage current-limiting fuses for industrial applications in the range of overcurrents from those implying prearcin... View full abstract»

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  • Breakdown of Gases Below Paschen Minimum: Basic Design Data of High-Voltage Equipment

    Publication Year: 1969, Page(s):100 - 107
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3055 KB)

    For the region pd<(pd)min, breakdown characteristics U2 = f(pd) are presented for both the noble and the more important molecular gases He, Ne, A, Kr, Xe, N2, H2, NH3, air, CO2, O2 (and Hg), particularly giving the probability of breakdown on which they are based, so that they can be used for dimensioning the relevant equipment. The design of vessel and electrode geometry which were introduced to ... View full abstract»

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  • Determination of Post-Zero Current from Restored Voltage Transient

    Publication Year: 1969, Page(s):108 - 119
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2656 KB)

    The post-zero current that flows in power circuit breakers during the voltage recovery period is calculated from the restored voltage transient, knowing the equivalent circuit for the test circuit. A differential equation for the post-zero current is derived, and numerical methods for solving it by means of an electronic computer are discussed. Data from a typical circuit breaker test are used to ... View full abstract»

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  • Investigation of the Positive Column of High-Current Metal-Vapor Arcs

    Publication Year: 1969, Page(s):120 - 126
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2480 KB)

    An analysis of the positive column of a high-current metal-vapor arc in a vacuum atmosphere is presented. Data for the analysis was obtained from the voltage-current characteristics of 60-Hz vacuum arcs with copper electrodes. Results of the analysis show that, for arcs carrying currents greater than 8000 amperes rms, the dominant mechanisms for controlling the size and transport properties of the... View full abstract»

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  • New Method of Simulating Rainfall in High-Voltage Testing

    Publication Year: 1969, Page(s):126 - 133
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3983 KB)

    A method is described for simulating rainfall during tests of high-voltage equipment. The system as described delivers controllable rain rates ranging from 0.2 to 2.0 in/h with water drops 4.5 mm in diameter over an outdoor area of 3 by 200 feet. A new method for simulating rain had to be developed for an investigation of the corona performance of conductors for high-voltage transmission lines, be... View full abstract»

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  • Full-Scale Tests in Japan on 500-kV Transmission Line Insulation

    Publication Year: 1969, Page(s):133 - 140
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3288 KB)

    The authors detail the outdoor switching-surge and impulse tests performed at Shiobara Laboratory to determine the insulation requirements of a 500-kV transmission system for the Tokyo Electric Power Company. Many kinds of insulator strings on single- and double-circuit configurations were thoroughly tested with the proximity effect at the tower window. The test for unbalanced insulation was condu... View full abstract»

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  • Electrical Conduction and Flashover Characteristics of Large Irrigation Sprinkler Water Streams Contacting High-Voltage Transmission Lines

    Publication Year: 1969, Page(s):141 - 146
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5850 KB)

    This paper presents the results of an investigation into the electrical conduction characteristics of high-volume irrigation sprinkler water streams which may come in contact with high-voltage transmission lines. The measure of electric current conducted through the water stream is established as a function of distance from nozzle-to-conductor for two types of sprinkler systems. conductor-to-tower... View full abstract»

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  • Current-Carrying and Short-Circuit Tests on EHV Cables Insulated with SF6 Gas

    Publication Year: 1969, Page(s):147 - 156
    Cited by:  Papers (15)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4623 KB)

    An EHV pipeline cable with compressed SF gas insulation was produced experimentally. Some dielectric tests were made with regard to 50-Hz impulse and switching surge voltages in 1965. Successively the second and third cables of three-phase type, about 45 feet in length, have been manufactured. View full abstract»

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  • Accelerated Aging Tests of 69-kV Cross-Linked Polyethylene Cable and Joints

    Publication Year: 1969, Page(s):157 - 170
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5363 KB)

    Test evaluation of 69-kV cross-linked polyethylene (XLPE) cable and joints for use with such cable is described. Joints suitable for connecting together either lengths of 69-kV cross-linked polyethylene (XLPE) cable or XLPE cable to solid-type paper insulated 69-kV cable are studied. It is shown that the characteristics of the tape selected greatly influence the performance of the joint. The therm... View full abstract»

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  • Processing by Logic Programming of Circuit-Breaker and Protective-Relaying Information

    Publication Year: 1969, Page(s):171 - 175
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (983 KB)

    This paper develops in a general fashion a logical procedure that analyzes circuit-breaker and protective-relaying operations in a power system. The purpose of the analysis, referred to as Automatic System Trouble Analysis (ASTA), is to derive an up-to- date picture of the power-system network and to obtain a realistic diagnosis of a case of system trouble. The ASTA procedure is characterized by a... View full abstract»

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  • Progress in Generator Leads: Economical Application of Forced Cooling

    Publication Year: 1969, Page(s):175 - 181
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1720 KB)

    Conductors for high electric currents have had a very interesting evolution extending through many years. As conditions changed, the application engineer developed types which most economically met the requirements of the period. This paper recounts in part the activities of the authors in this field since 1925. It details some of the most important developments as they took place at the Cleveland... View full abstract»

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  • Current Density Probes

    Publication Year: 1969, Page(s):181 - 185
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (965 KB)

    The theory, construction, and characteristics of a filament-type current density probe are described. Its application to the direct measurement of the magnitude and phase of current density in solid and liquid two-and three-dimensional geometries is presented. The use of scaled liquid models in the solution of a variety of important proximity and skin effect problems is discussed. Brief mention is... View full abstract»

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  • Contributors

    Publication Year: 1969, Page(s):186 - 188
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    Freely Available from IEEE

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