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Power Apparatus and Systems, IEEE Transactions on

Issue 5 • Date May 1970

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Displaying Results 1 - 25 of 42
  • IEEE Transactions on Power Apparatus and Systems - Table of contents

    Publication Year: 1970 , Page(s): c1
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    Freely Available from IEEE
  • IEEE Power Group

    Publication Year: 1970 , Page(s): c2
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    Freely Available from IEEE
  • Random Separation - Development and Experience

    Publication Year: 1970 , Page(s): 673 - 680
    Cited by:  Papers (2)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1880 KB)  

    The joint burial of primary power and telephone distribution cables with no deliberate separation is known as random separation. After extensive tests, the Joint Edison Electric Institute- Bell System Subcommittee to Study Buried Distribution Systems recommended random separation between telephone cables and certain types of primary power cables having bare neutrals in direct contact with the eart... View full abstract»

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  • Flaw and Fracture Phenomena in Electrical Porcelain

    Publication Year: 1970 , Page(s): 680 - 684
    Cited by:  Papers (3)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (936 KB)  

    The mechanical reliability of a porcelain insulator is dependent upon its ability to resist both initiation and propagation of cracks. Laboratory tests have shown that such resistance is dependent on the nature of flaws present and the magnitude and duration of load. These tests included time-load studies, crack extension testing, and a study of ultimate strength versus flaws. With a better unders... View full abstract»

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  • Phase-Phase Switching Surges on 500-kV Transformer-Terminated Lines, Part I: 500-kV Circuit-Breaker Operation

    Publication Year: 1970 , Page(s): 685 - 690
    Cited by:  Papers (2)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1313 KB)  

    An investigation of the effects of system and transformer parameters on phase-phase switching surges on transformer-terminated 500-kV lines was conducted on a transient network analyzer. The results of this study are presented, including surge magnitudes, waveshapes, and the line-neutral polarity components comprising the phase-phase surges. Typical surge distribution curves are also discussed. View full abstract»

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  • Phase-Phase Switching Surges on 500-kV Transformer-Terminated Lines, Part II: Switching from Low-Voltage Terminals

    Publication Year: 1970 , Page(s): 691 - 697
    Request Permissions | Click to expandAbstract | PDF file iconPDF (2477 KB)  

    The effects of system parameters and transformer sizes on phase-phase switching surges on 500-kV autotransformer- transmission line combinations when switched through the auto- transformer were investigated on a transient network analyzer. The results of the study are presented, including surge magnitude, waveshapes, and the line-neutral polarity components comprising the phase-phase surges. Phase... View full abstract»

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  • Analysis of Synchronous Machines under Unbalanced Operation

    Publication Year: 1970 , Page(s): 698 - 706
    Cited by:  Papers (6)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1393 KB)  

    Considering only the fundamental frequency components of currents and voltages, an idealized synchronous machine under any unbalanced load conditions can be represented in phase coordinates, by the sum of a constant impedance matrix and an impedance matrix whose elements are functions of current phase angles. A general method of solving for the unknown current phase angles and hence the total impe... View full abstract»

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  • A Single-Unit Single-Winding Brushless Reluctance Frequency Converter

    Publication Year: 1970 , Page(s): 706 - 715
    Cited by:  Papers (4)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1735 KB)  

    A single-unit reluctance converter is discussed. The rotor used is of a double-permeance type, and a method of optimizing its shape for any frequency ratio is attempted. In tune with the present trend, single-winding arrangements are proposed for the stator. Further extension for simultaneous double-frequency conversion makes it all the more versatile. Apart from theory and design, experimental in... View full abstract»

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  • Determination of Coil Currents in Traction Motors During Commutation

    Publication Year: 1970 , Page(s): 716 - 723
    Request Permissions | Click to expandAbstract | PDF file iconPDF (2511 KB)  

    As the largest producer of diesel-electric locomotives in the world, Electro-Motive Division of General Motors Corporation has played a major role in the development of the dc traction motor. An integral part of this development has been the improvement of methods needed to evaluate the performance of proposed traction motor designs. This paper introduces an experimental method, now under developm... View full abstract»

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  • A Refined HVDC Control System

    Publication Year: 1970 , Page(s): 723 - 732
    Cited by:  Papers (32)  |  Patents (4)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (5661 KB)  

    Most commercial HVDC plants now operating are equipped with the same type of control system, the so-called individual phase control system. This system is simple and the operating experience is excellent. However, the requirements for future installations will sometimes be difficult to fulfill with the existing control system. This may be the case when the HVDC transmission is connected to a very ... View full abstract»

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  • Stability Analysis of the HVDC Control System Transmission Using Theoretically Calculated Nyquist Diagrams

    Publication Year: 1970 , Page(s): 733 - 740
    Cited by:  Papers (6)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1403 KB)  

    The current control system of an HVDC converter has rather complicated dynamic properties, and it is not possible to determine these by simple manual calculations. Instead, frequency analysis in an HVDC simulator has been the available method for stabilization of the system. View full abstract»

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  • Consequent Arc Backs and Consequent Arc Throughs in HV Mercury-Arc Valves

    Publication Year: 1970 , Page(s): 740 - 747
    Cited by:  Papers (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1769 KB)  

    This paper traces developments in high-voltage mercury arc valves for HVDC power transmission in relation to problems conceming "consequent" failure. Investigations are reported on the physical conditions in valves during and after high forward current pulses. An account is given of some of the main development work aimed at producing valves with greatly reduced consequent failure probability. View full abstract»

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  • Overcurrent Surge Behavior of HVDC Mercury-Arc Valves and Improvement of Their Consequential Arc-Back Performance

    Publication Year: 1970 , Page(s): 747 - 754
    Cited by:  Papers (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (7572 KB)  

    This paper outlines some of the physical phenomena that occur during overcurrent surges in mercury-arc converters, and discusses the relevance of these phenomena to the "consequential arc-back" performance of practical valves. Some experimental work on small-scale models reported has led to a better understanding of the effects of anode geometry on one form of consequential arc-back. Full-scale te... View full abstract»

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  • Flashover Test at Project UHV on Salt-Contaminated Insulators

    Publication Year: 1970 , Page(s): 755 - 761
    Cited by:  Papers (2)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (3202 KB)  

    The results of experimental studies on the contamination flashover strength of different shapes of transmission line insulators are presented. Insulators with mechanical strengths from 15 000 to 90 000 pounds and with disk diameters from 10 to 152/4 inches were used on these tests. New types of fog insulators with high creepage distance showed better performance than the others. Tests on long insu... View full abstract»

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  • A Study of Some Variables Affecting Contamination Testing Using the Wet Contaminant Method

    Publication Year: 1970 , Page(s): 761 - 770
    Cited by:  Papers (4)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (3092 KB)  

    The test results reported in [1] for which Cab-O-Sil®was used as a slurry binder are compared with tests made using a slurry having a binder of kaolin and bentonite. Also investigated were the effect of nonuniformity of the contaminating coating and the strength of horizontal versus vertical contaminated insulator strings. View full abstract»

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  • Hot-Line Washing of Substation Insulators

    Publication Year: 1970 , Page(s): 770 - 774
    Cited by:  Papers (8)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (2192 KB)  

    As an effective measure to prevent pollution flashover troubles in substations, fixed-type hot-line insulator washing has been widely used. The fundamental study on electrical performances of polluted insulators under washing and the performance of a fixed- type washing system are described. It also discusses the necessity of insulation coordination for pollution. View full abstract»

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  • Operating Characteristics of a Three-Terminal DC Transmission Line

    Publication Year: 1970 , Page(s): 775 - 780
    Cited by:  Papers (7)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1306 KB)  

    An evaluation is made of the performance of a three- ended dc transmission line superimposed on an ac network. Tests were conducted both with two rectifiers and one inverter and with one rectifier and two inverter terminals. Performance of these circuit configurations was evaluated under various steady-state and transient conditions. View full abstract»

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  • Flashover Tests on Large Air Gaps with DC Voltage and with Switching Surges Superimposed on DC Voltage

    Publication Year: 1970 , Page(s): 781 - 788
    Cited by:  Papers (9)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (3854 KB)  

    Part I of the paper gives the results of flashover tests carried out on rod-plane and rod-rod gaps of both polarities, with applied dc valtace up to 1600 kV. View full abstract»

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  • Power System Transient Stability: Regions Using Popov's Method

    Publication Year: 1970 , Page(s): 788 - 794
    Cited by:  Papers (13)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1243 KB)  

    This paper applies Kalman's procedure for the construction of Lur'e-type Lyapunov functions to a single-machine system with and without a velocity governor. The procedure uses the theorem of Popov on the absolute stability of nonlinear systems. The Lyapunov function so derived is used for estimating the region of asymptotic stability of the postfault system. The method is applicable to a single-ma... View full abstract»

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  • The Application of Lyapunov Methods to the Computation of Transient Stability Regions for Multimachine Power Systems

    Publication Year: 1970 , Page(s): 795 - 801
    Cited by:  Papers (20)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1524 KB)  

    This paper outlines a method for computing a stability region for a multimachine power system. It is shown that the dynamic equations describing this system are of the type for which some rather elegant stability criteria are known, of which the Popov criterion is the most useful. It can be proved by means of a Lyapunov function which will, together with a method for computing the domain of attrac... View full abstract»

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  • Block Diagram Approach to Power System Reliability

    Publication Year: 1970 , Page(s): 802 - 811
    Cited by:  Papers (9)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1524 KB)  

    The Markov process concept is used to derive expressions for an equivalent of two units in series and parallel considering two-state conditions of fluctuating normal and stormy weather. These expressions are then used to simplify a system by the series and parallel block reduction technique. It is observed that this technique alone is not sufficient for a system where a complex configuration is in... View full abstract»

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  • Step-by-Step Formation of Bus Admittance Matrix

    Publication Year: 1970 , Page(s): 812 - 820
    Cited by:  Papers (5)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1415 KB)  

    An algorithm has been developed to form the bus admittance matrix Ybu,, by forming the network through a step-by- step addition of a line or a passive element to the system, taking into account the mutual coupling between the elements. Two sets of formulas have been derived for the addition of a tree branch and for the addition of a link. This method eliminates the formation of incidence matrices ... View full abstract»

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  • Simulation of AC System Impedance in HVDC System Studies

    Publication Year: 1970 , Page(s): 820 - 828
    Cited by:  Papers (27)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1601 KB)  

    In some studies of HVDC system design, ac system impedance is represented by its inductance at power frequency. However, for several studies better simulation of the impedance- frequency characteristic (from power frequency to a few kilohertz) of the ac system is important. This paper presents a simple approach to calculating an approximate equivalent network consisting of parallel LCR branches an... View full abstract»

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  • Use of Microwave Radio for Protective Relaying

    Publication Year: 1970 , Page(s): 828 - 836
    Cited by:  Papers (3)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (2175 KB)  

    The Microwave Subcommittee of the Power System Communications Committee has studied the use of microwave radio to provide protective relaying channels and has compiled the results of a questionnaire sent to users. The report indicates the extent of present-day uses of microwave for protective relaying, trends in their uses, and whether or not relaying over microwave has proved successful. View full abstract»

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  • Fair-Weather RI, Part I: Artificial and Natural Sources

    Publication Year: 1970 , Page(s): 837 - 844
    Cited by:  Papers (2)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (4200 KB)  

    Based on the present state of the art a simplified picture depicting the characteristic of corona plumes and RI generation from EHV line conductors during fair weather is presented. An artificial source was developed to simulate some natural sources that were identified in the field insofar as plume and RI generation are concerned. By means of the artificial source, a prediction is made on the RI ... 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