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Industry Applications, IEEE Transactions on

Issue 6 • Date Nov. 1983

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Displaying Results 1 - 25 of 58
  • IEEE Transactions on Industry Applications - Table of contents

    Page(s): c1 - 890
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    Freely Available from IEEE
  • IEEE Industry Applications Society

    Page(s): c2
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    Freely Available from IEEE
  • Progress on the Transactions Improvement Program

    Page(s): 891
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    Freely Available from IEEE
  • 1983 Industry Applications Society Awards IAS Outstanding Achievement Award

    Page(s): 892
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    Freely Available from IEEE
  • IAS Paper Awards First Society Prize Paper Award Design of Angle-Controlled Current Source Inverter-Fed Induction Motor Drive

    Page(s): 893 - 894
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    Freely Available from IEEE
  • Conference Highlights

    Page(s): 895 - 898
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    Freely Available from IEEE
  • Technology Transfer

    Page(s): 899 - 900
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  • Robotics

    Page(s): 901 - 902
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  • New Airport Distribution System with Closed-Loop Circuit - Remote Operation and Monitoring

    Page(s): 908 - 913
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    Unique distribution design to accommodate load growth for an airport facility features an economic approach to sectionalizing and supervisory control. A distribution vacuum interrupter switch with automatic controls provides low-cost light-duty breaker functions to upgrade the existing facility. Unusual equipment mounting positions, particularly high-voltage switchgear hung from hallway ceilings, save valuable space and construction costs. A new ring main bus arrangement with central dispatch and control is described. The design is geared to provide maximum continuity for a system whose XLP cables are exposed to a salt water environment. View full abstract»

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  • Field Testing of Voltage Transients Associated with Vacuum Breaker No-Load Switching of a Power Transformer in an Industrial Plant

    Page(s): 914 - 919
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    Reported here are the results of a field investigation of switching-produced transients associated with vacuum circuit breaker switching of an unloaded low-voltage substation transformer. A sufficient sampling of data has been obtained and documented to provide a good statistical basis for this important mode of switching in a very prevalent application area. The results of this field measurements program confirm that the transient voltage environment created by such switching is within, by a wide margin, the expected transient capabilities of the associated power distribution equipment¿specific evaluation being made with respect to the switched transformer. View full abstract»

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  • Probabilistic Approach for Lightning Protection of Structures: Application Criteria for Protective System Design

    Page(s): 920 - 931
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    The problem of lightning protection for structures is treated from a probabilistic point of view. A criterion is suggested to evaluate the exposure of the structure, exposure being defined as the number of direct lightning strokes received., The influence of landform and of surrounding structures is considered. An approach is discussed for selecting the basic characteristics of the system suitable for ensuring protection of the structure compatible with the admissible risk fixed by codes. The influence of the characteristics of the protective system on protection performance is evaluated and discussed. View full abstract»

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  • On-Line Harmonic Analysis as a Diagnostic Design and Control Tool for Power Systems Feeding Arc Furnaces, Thyristor-Controlled Mill Drives, and Power Factor Correction Equipment

    Page(s): 932 - 939
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    Microprocessor-based signal processing equipment for frequencies up to 20 kHz have become compact and fast enough to allow direct on-line real-time analysis on power systems to determine behavior. A case study is presented for a small steelworks operating a 25-MVA open arc furnace, installing 6.5 MVA of thyristor control equipment and further power factor correcting equipment and harmonic filters on a system with ill-defined parameters, low short- circuit capacity, and already containing power factor correcting capacitors tuned at the third harmonic. Discrete spectrum analysis equipment, microprocessor-based and coupled via IEEE-bus to a microcomputer system, was used to do on-line analysis at various points in the system. The high-speed system enabled sophisticated signal processing to yield even and uneven harmonics, stochastic components, system parameters and resonances and mutual interference. It is shown how this is used to rectify problems in the system, adapt equipment, and design power factor and filter equipment. View full abstract»

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  • The Newton-Raphson Load Flow Applied to AC/DC Systems with Commutation Impedance

    Page(s): 940 - 948
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    Existing conditions in industrial ac-dc power systems may result in significant commutation resistances. If the resistance to reactance ratio of the commutation impedance is high, significant errors can result in load-flow studies which neglect the resistive portion. A method is presented for inclusion of a resistance-inductance fed bridge rectifier in a Newton-Raphson (N-R) load flow program. Polar form of the power flow equations is assumed. An example problem is provided for comparison. View full abstract»

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  • NEC Cable Types and Applications

    Page(s): 949 - 957
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    The National Electrical Code (NEC) has been significantly revised over the past decade, particularly where it pertains to industrial occupancies. New cable constructions have been added, and requirements and applications for existing cables have been changed. A reference is provided for the various cable types available for low-voltage power-limited circuits, 600-V power and control, and medium-voltage power cables (2001-35 000 V). The installation requirements for direct burial and hazardous locations are specifically covered as well as general industrial installations. View full abstract»

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  • Protection of the Induction Motor/Generator

    Page(s): 958 - 961
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    This paper covers a brief review of the induction generator theory. The equivalent circuit is covered along with comment on performance characteristics. The application involving the relaying of induction generators can be simple to complex depending on the process requirements. As an example, the induction generator can be connected to an expander in the natural gas system with a minimum of relaying, or it can be used as a motor to help accelerate a multi- element train and function as a brake for the multi-element train and thus complicate the relaying. A more complicated application is analyzed and relaying suggested. View full abstract»

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  • Trans-Alaska Pipeline Electrical Power Requirements and Systems

    Page(s): 962 - 967
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    The Trans-Alaska pipeline was built to transport crude oil from the Prudhoe Bay field on the North Slope of Alaska to an ice-free port in south-central Alaska. The 48 in pipeline has a design capacity of two million barrels per day but is currently operating at a 1.52-million rate. The pipeline passes over several mountain ranges and is more than 50 percent above ground, exposed to temperatures ranging from ¿70°F to 100°F. Some 800 rivers and streams are crossed. The power requirements to operate this pipeline are discussed. The majority of the power is generated in-house; however, utilities are utilized at three pump stations with in-house backup generators. Sixty-two motor-operated valves depend on local energy converters to keep batteries charged. View full abstract»

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  • Reliability and Availability Studies for Industrial Power System Analysis

    Page(s): 968 - 974
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    Reliability and availability (R&A) studies have been made a part of the IEEE Recommended Practice For Industrial and Commercial Power System Analysis (IEEE Standard 399-1980). R&A studies should improve the selection of system configurations and components by basing decisions on quantitative information rather than on intuitive and qualitative decisions. The R&A indices for any electric power system design can be computed from knowledge of the statistical performance of individual components within the system. One of the important indices is the system overall downtime, which has a direct cost impact due to plant process interruption. In addition to R&A computation of electrical components in simple series or parallel configurations, other commonly encountered electrical power systems situations are considered such as a) scheduled maintenance of system components, b) manual switching of system components, c) transformer overloading practices, d) parallel redundant connections within a system, e) spare components available on short notice, and f) local generator units. These situations will be discussed, and the methods of calculation required to include them in R&A studies will be presented. View full abstract»

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  • Dynamic Fault Testing of Ground Sensing Relays

    Page(s): 975 - 979
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    Performance testing of a ground fault protection system has traditionally been accomplished by simulating high level fault magnitudes at current transformer secondary. For a new chemical manufacturing facility, a procedure was devised to safely stage ground faults on the 480-V distribution system. To implement the procedure, a test set was developed that placed a controlled ground fault on the system and measured current magnitude and tripping time. Tests were conducted without the need to modify the distribution system or the ground protection wiring in any way. This feature revealed discrepancies that would not have been discovered following more conventional test methods. View full abstract»

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  • Current Limiting Protector for Industrial Applications

    Page(s): 980 - 984
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    The development, the testing, and the application of the current limiting protector (CLP) and a compatible current level sensing and trigger circuit are described. The CLP consists of a current carrying main conductor and a parallel fusible element. In response to a short circuit, gaps are formed in the main current path by pyrotechnic cutting. The gap arc voltages commutate the current to the parallel fusible element, which then interrupts the current in a current limiting mode. High-power tests in 4-15-kV circuits limited prospective short circuits of 40-kA (rms) to less than 15 kA. The CLP offers single shot current limiting protection with low let-through I2t. View full abstract»

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  • Specifying and Designing Flexible Shaft Electrical Machines

    Page(s): 985 - 995
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    Recent developments relating to the undestanding, analysis, and measurement of vibratory motiohs, forces, and instabilities of rotating systems and their bearing support structures are now becoming available to the designers of systems involving electrical machines and their component suppliers. The status of the more pertinent of these developments and their applicability to such systems is reviewed with special considerations to those involving flexible shaft machines. View full abstract»

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  • Power Transmission to Synchronous Machines for Adjustable-Speed Pump and Compressor Drive Systems

    Page(s): 996 - 1002
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    The adjustable-speed synchronous motor drive system uses static power conversion technology and hardware which has been proven by millions of kilowatts of installed capacity in dc motor drives and dc transmission systems. The application of dc power conversion technology to transmit power to a synchronous machine provides unique operating characteristics of the drive system with respect to pump and compressor applications. Alternative drive system configurations are presented with the benefits relative to performance and reliability. View full abstract»

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  • Induction Generator Applications for Petroleum and Chemical Plants

    Page(s): 1003 - 1013
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    A 13 900-hp 1200-r/min induction machine has been applied as a motor/generator in a compressor-expander string associated with a fluid catalytic cracking (FCC) process. Power factor correction capacitors are connected at the terminals of the induction machine. The specific principles of application, as they apply to generator applications, of induction machines are reviewed. Mechanical design, overspeed, excitation, electrical and mechanical transients, and machine control are studied in detail. View full abstract»

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  • Controlled Starting of AC Induction Motors

    Page(s): 1014 - 1018
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    As the demand for electrical energy continues to increase, increasing restrictions will be placed on full-voltage starting of ac induction motors. Inrush is the problem. The utilities are tending to enforce more rigorously the historical limits on the amount of inrush allowed. Reduced-voltage starters have traditionally been used to reduce the impact of motor starting inrush. All traditional starters have reduced the amount of inrush, but none have eliminated it. The type of driven load must be taken into consideration in order to provide motor torque sufficient to start the load while eliminating the starting current inrush. The Ultra Torq is a motor plus solid-state starter combination which provides a solution to the problem. The Ultra Torq controls the rate-of-change of kVA with respect to time, thereby eliminating the problem of inrush. A successful start is assured by matching the motor, starter, and controller to the torque requirements of the load and to the kVA limits of the system. The match makes the difference. View full abstract»

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Aims & Scope

The scope of the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS includes all scope items of the IEEE Industry Applications Society, that is, the advancement of the theory and practice of electrical and electronic engineering in the development, design, manufacture, and application of electrical systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; industry leadership in energy conservation and environmental, health, and safety issues; the creation of voluntary engineering standards and recommended practices; and the professional development of its membership.

Full Aims & Scope

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Editor-in-Chief
Carlton E. Speck