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Power Apparatus and Systems, IEEE Transactions on

Issue 3 • Date May 1978

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Displaying Results 1 - 25 of 43
  • IEEE Transactions on Power Apparatus and Systems - Table of contents

    Publication Year: 1978 , Page(s): c1 - 1000b
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    Freely Available from IEEE
  • IEEE Power Engineering Society

    Publication Year: 1978 , Page(s): c2
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    Freely Available from IEEE
  • Microalternator Experiments to Verify the Physical Realisibility of Simulated Optimal controllers and Associated Sensitivity Studies

    Publication Year: 1978 , Page(s): 649 - 658
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3029 KB)  

    It is shown experimentally that modern control theory can be used to provide very satisfactory excitation control of a microalterntor intended to represent a large, 2-pole, fossil fuel, thermal unit, under a wide range of operating conditions. Five different controllers are considered and experimental work is supported by extensive digital computer simulation and associated parameter and trajectory sensitivity studies. View full abstract»

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  • Performance of Extruded Dielectric (XLPE) Cable

    Publication Year: 1978 , Page(s): 659 - 668
    Cited by:  Papers (1)
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    Samples from a 138kV XLPE cable tested at Waltz Mill are examined and compared with an unenergized piece. Several new analytical techniques are employed and studies are made concerning the distribution of discontinuities (contaminants, ambers, voids, and trees, etc.), cure-related items (extractables, density, residual peroxide and decomposition products, etc.), thermal and oxidation stability, incipient voids and trees, and shield-to-insulation smoothness. Changes are seen for many of these factors between the original and tested cable samples. Some of the effects are subtle, complex and/or unsuspected. The overall assessment for XLPE power cables, however, is encouraging. View full abstract»

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  • 400 kV Cable Installations in Mexico

    Publication Year: 1978 , Page(s): 669 - 677
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    As a consequence of the development in the recent years of the Mexican 400 kV grid, the first two 400 kV cable installations in Mexico were carried out at Infernillo and Angostura Power Plants. In both installations self-contained oil-filled cables were chosen. After a general description of the plants, the cable and accessory design is discussed. Particular reference is made to laying problems, especially for the Angostura 130 m vertical shaft installation. View full abstract»

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  • State Estimation in Power Systems: Detecting Bad Data through the Sparse Inverse Matrix Method

    Publication Year: 1978 , Page(s): 678 - 682
    Cited by:  Papers (41)
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    In the real time control of power system, the state estimation function plays a leading role. To perform its task, the estimator must detect and eliminate the grossly erroneous measurements. View full abstract»

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  • Generator Neutral Grounding Some Aspects of Application for Distribution Transformer with Secondary Resistor and Resonant Types

    Publication Year: 1978 , Page(s): 683 - 694
    Cited by:  Papers (11)
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    Two separate studies were made with regard to generator neutral grounding practices. One of these relates to distribution transformer with secondary resistor type of grounding and specifically as to the applicability of L-N rated transformers. The second investigation relates particularly to resonant grounding and to the effect of departures from rated frequency which occur during such operations as load rejection, startup and shutdown on the transient voltages which may exist. View full abstract»

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  • Probabilistic Methods For Power System Dynamic Stability Studies

    Publication Year: 1978 , Page(s): 695 - 702
    Cited by:  Papers (36)
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    In this paper, several sources of uncertainty in electric power systems are incorporated into the dynamic stability analysis of the system. Operating point stability is considered, with the system model written in state variable notation. The sensitivites of the eigenvalues of the associate matrix are used to calculate the statistics of eigenvalue locations. When the uncertainties considered are approximated by the multivariate normal distribution, the probability of dynamic stability is computed using the generalized tetrachoric series. The principle advantages of this method over multiple runs of a deterministic stability study are rapid calculation times and the availability of consistently calculated probability of operating point stability figures. View full abstract»

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  • Seismic Design Guidelines for Substation Facilities

    Publication Year: 1978 , Page(s): 703 - 713
    Cited by:  Papers (1)
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    This paper discusses one utility's seismic design guidelines for assuring continuity of service at substation facilities during and after future earthquakes. Presented is an aggregate analysis of a five-year research and development program conducted by the Southern California Edison Company (SCE) in order to determine the seismic properties and withstand capability of critical substation components. The most significant aspect of these seismic design procedures is the incorporation of cost/risk considerations early in the design effort. View full abstract»

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  • Parallel Connection of Convertors for HVDC Transmission

    Publication Year: 1978 , Page(s): 714 - 724
    Cited by:  Papers (2)
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    Subdivision of the total transmission capacity of an HVDC convertor station into smaller parts then one convertor per pole can be done either by series or parallel connection of convertors. Parallel connection which is the subject of this paper, is particularly advantageous when a transmission is built in stages or when the system consists of more than two convertor stations. View full abstract»

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  • Research on Artificiallyu Triggered Lightning in France

    Publication Year: 1978 , Page(s): 725 - 733
    Cited by:  Papers (14)
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    An experimental station for research on lightning and lightning effects was built in the Massif Central (France) in 1973. The experimental procedure is an application of artificial triggering of lightning flashes by means of the wire and rocket technique, which has previously been shown to be valid by M. M. NEWMAN. View full abstract»

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  • Progress in the Development of Gas-Impregnated Lapped Plastic Film Insulation

    Publication Year: 1978 , Page(s): 734 - 743
    Cited by:  Papers (3)
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    A flexible superconducting power transmission cable in under development. The electrical insulation consists of lapped polymeric film tapes impregnated with supercritical helium. Ways of satisfying the many constraints on the material are described. Although the cable is intended for low-temperature operation good electrical and mechanical characteristics are needed at room-temperature. Results are given for both small- sample tests and a model cable fabricated commercially. The results are compared with those obtained by other workers and the design of the next test cable is given. Work supported by the U. S. Energy Research and Development Administration, the Electric Power Research Institute and the National Science Foundation. View full abstract»

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  • Damping of Torsional Oscillations in Power Systems with Series-Compensated Lines

    Publication Year: 1978 , Page(s): 744 - 753
    Cited by:  Papers (15)
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    The phenomena of subsynchronous resonance (SSR) in power systems with series-compensated transmission lines have been the subject of many studies in the recent literature. A companion paper has dealt with the characterization of the various SSR phenomena, their zones of influence, and their dependence on the system parameters. This paper deals with the damping of torsional oscillations through the use of stabilizing signals introduced at the input of the excitation system. The scheme is applied to the IEEE bench mark model for computer simulation, proposed by the IEEE Task Force on Subsynchronous Resonance. View full abstract»

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  • Subsychronous Resonance Zones in the IEEE "Bench Mark" Power System

    Publication Year: 1978 , Page(s): 754 - 762
    Cited by:  Papers (16)
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    Studies of subsynchronous resonance (SSR) phenomena are conducted in a power system composed of a turbo-generator set connected to an infinite bus via series capacitor-compensated transmission lines. The analysis is applied to a "bench mark" model proposed by the special IEEE Power Engineering Society Task Force on Subsynchronous Resonance. View full abstract»

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  • Performance of Semiconducting Glaze Insulators Under Adverse Conditions

    Publication Year: 1978 , Page(s): 763 - 771
    Cited by:  Papers (5)
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    This paper describes the results of iiivestigations into the various electrical characteristics under the adverse conditions of 1 0-inch porcelain suspension insulators with a semiconductinig glaze: tests were made simulatinig a heavy rain after exposure to a long period of contami, iation; performance of conitaminiated insulators was investigated assuminig that the workinlg voltage stress was as low as half of the designed value; and behavior of contaminated insulators was investigated simulating cold wet switch-on conditions. Investigation was also made into the electrical characteristics of insulators by subjecting their semiconducting glaze to heavy artificial damage simulating damages caused by power arc, gunshot, etc. View full abstract»

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  • Optimal Hydro Scheduling at the Bonneville Power Administration

    Publication Year: 1978 , Page(s): 772 - 776
    Cited by:  Papers (11)
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    The problem of hydroelectric scheduling is formulated as an unconstrained nonlinear optimization problem using penalty functions for the constraints and the method of conjugate gradients for optimization. View full abstract»

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  • The Controlling Thermal Resistance in Forced Cooled Pipe Transmission Lines

    Publication Year: 1978 , Page(s): 777 - 779
    Cited by:  Papers (1)
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    The heat dissipated in the conductor of a forced cooled pipe type cable system must pass through two thermal resistances in series: the conduction resistance of the cable insulation and the combined forced and natural convection resistance from the cable surface to the oil. The upper limit to the convection resistance was determined by natural con- vection heat transfer tests on a full scale model. It was found that the conduction resistance is more than four times larger than the convection resistance for cables designed for 138 kV and higher voltages. Therefore, to accurately predict the temperature inside the cable, the conduction within the insulation must be accurately modelled whereas a precise prediction of the convection heat transfer is unnecessary. View full abstract»

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  • Power System Modal Identification from Large Scale Simulations Using Model Adaptive Reference Control

    Publication Year: 1978 , Page(s): 780 - 788
    Cited by:  Papers (5)
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    The major objective of this paper is the identification of the dominant modal responses of large scale power system dynamic simulations. The results of simulations are the angle-time responses of synchronous machine rotors. The rotor inertias coupled via transmission lines produce second order responses, whose damping factors and undamped natural frequencies are identified by a Model Adaptive Reference Control (MARC) system. The MARC identification system is applied successfully to the swing curves of a 1700 bus power system simulation to identify the local and intertie mode parameters. Specifically the sensitivity of modal damping due to power modulation of an HVDC tie is quantified. The low frequency interarea mode damping ratio (¢) is increased from 0.12 to 0.17 by the use of Frequency Sensitive Power Modulation, whereas the other parameters of the two modes were not affected significantly. Thereby the effectiveness of an External Control system on an HVDC transmission line is quantified. Previous evaluations had yielded only qualitative results. View full abstract»

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  • Bibliography of Relay Literature, 1974-1975

    Publication Year: 1978 , Page(s): 789 - 801
    Cited by:  Papers (1)
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    THE LATEST OF A SERIES OF CLASSIFIED LISTS OF POWER SYSTEM RELAY REFERENCCES, BEGUN IN 1927, IS PRESENTED. View full abstract»

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  • Electric Power Engineering Educational Resources--1975-76

    Publication Year: 1978 , Page(s): 802 - 809
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    This fourth biennial(1,2,3,4) committee report covers results of a survey of Electric Power Engineering Educational Resources at ECPD (Engineers Council for Professional Development) accredited universities in the United States of America for the academic year 1975-1976. This report includes a listing of faculty active during the subject year, their level of academic involvement and professional experience, together with information on undergraduate student enrollment in various subject matter. Also included is information concerning graduate student enrollment in various subject matter, degrees granted and research- funding support activity. View full abstract»

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  • Guidelines for use in Developing a Specific Underground Distribution System Design Standard

    Publication Year: 1978 , Page(s): 810 - 827
    Cited by:  Papers (2)
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    This task group report sets forth guidelines for power distribution engineers to use when developing specific underground distribution system design standards tailored to fit their own system needs. The report consists of a system design guideline which includes a discussion of design parameters and a primer of distribution system design considerations. The objective of this guideline is to facilitate the development of economical, safe, reliable and environmentally acceptable underground distribution systems. View full abstract»

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  • Dielectric Behavior of the Coolant for a Gas Insulated HVDC Thyristor Valve

    Publication Year: 1978 , Page(s): 828 - 837
    Cited by:  Papers (6)
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    The objective of this paper is to report on studies made on a fullscale model of the coolant system for a gas insulated, fluorocarbon liquid cooled HVDC thyristor valve. Confidence in the selection of the coolant system and its associated dielectric containment structure stemmed from the parametric study of the coolant, and the more than adequate dielectric strength of the coolant even when it was in the cavitated state. An explanation is proposed on the apparent anomoly of the exceptional dielectric strength of the system, even when bubble nucleation is induced by the injection of a dielectrically weak (nitrogen) gas into the flowing coolant. View full abstract»

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  • Practical Modeling of the Circuit Breaker ARC as a Short Line Fault Interrupter

    Publication Year: 1978 , Page(s): 838 - 847
    Cited by:  Papers (17)
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    The short-line fault interrupting ability of gas-blast circuit breakers is limited by arc energy balance processes very close to current zero. Practical calculation of the energy balance limit in a given circuit requires mathematical modeling of the arc as a circuit element. Using the combined Cassie-Mayr model, useful relations are derived for treating the limiting cases of the short-line fault both with and without capacitance shunting. Included are methods for approximate analysis and extrapolation of data from actual and simulated short-line fault tests with and without RRRV controlling resistance and capacitance shunts. In these analyses the arc is described by only two model parameters: a near-current-zero arc voltage Eo and an arc time constant 0, both definable as simple functions of the circuit di/dt. Examples are given of such analyses of high di/dt interrupting tests on actual and model SF6-blast interrupters. View full abstract»

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  • Influence of Non-Standard Switching Impulses on the Flashover Mechanisms of Air Gap

    Publication Year: 1978 , Page(s): 848 - 856
    Cited by:  Papers (3)
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    A study of the behaviour of a 4 m rod-plane air gap subjected to non-standard waveshapes has been carried out. For this purpose, bumps of different amplitudes and shapes are superimposed on various basic impulses. View full abstract»

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  • Long Line Single-Phase Switching Transients and Their Effect on Station Equipment

    Publication Year: 1978 , Page(s): 857 - 865
    Cited by:  Papers (6)
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    The influence of single phase switching on long EHV transmission lines and system design is presented. The effect of long lines, transposition schemes, power flow and other system conditions is shown to significantly affect the magnitude and characteristics of secondary arc currents. It is shown that the sustained and transient overvoltages resulting from single phase switching during increased levels of power flow may exceed conventional three phase energizing transients. The relationship between these and other overvoltages and equipment specifications is presented. The effect of single phase switching on an adjacent HVDC terminal is also briefly discussed. 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