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IEEE Transactions on Power Apparatus and Systems

Issue 6  Part 1 • Date Nov. 1976

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Displaying Results 1 - 21 of 21
  • [Front cover and table of contents]

    Publication Year: 1976, Page(s): c1
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    Freely Available from IEEE
  • A field study of bus-fault transient recovery voltages

    Publication Year: 1976, Page(s):1769 - 1776
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    The estimation of system transient recovery voltages from system diagrams requires a determination of "effective" parameters. This is a study of 345 KV field data, produced by a current pulse test circuit, which shows the types of transient recovery voltage characteristic of both local sources, and local sources paralleled with remote sources. The test results are compared to calculated values, us... View full abstract»

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  • Step response of optimally damped EHV capacitive dividers

    Publication Year: 1976, Page(s):1777 - 1785
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (832 KB)

    The optimally damped capacitive voltage dividers have superior characteristics for fast-rise impulse voltage measurements in the megavolt range. The step response for these EHV dividers is required for determination of their dynamic properties as well as for calculation of the response to arbitrary waves. Presently methods are available only to determine the response time of the EHV dividers.The l... View full abstract»

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  • An analysis of eddy current and hysteresis losses in solid iron based upon simulation of saturation and hysteresis characteristics

    Publication Year: 1976, Page(s):1786 - 1794
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    This paper offers a numerical approach to the determination of the magnetic field distribution, in a semi-infinite space, filled with conductive ferromagnetic materiaI. Simple mathematical functions are used to simulate the saturation and hysteresis characteristics of a given material. The case of a sinusoidal magnetic field, applied uniformly on the boundary plane, is studied as an example. The p... View full abstract»

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  • Report on pile testing for AEP transmission lines - part I

    Publication Year: 1976, Page(s):1795 - 1802
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    This paper and the companion paper, Part II, cover the American Electric Power Company (AEP) pile testing program of 1966 and 1967 in southern Michigan and northern Indiana. These two papers present the results of uplift, compression and lateral load tests on numerous types and sizes of piles. Load versus movement and ultimate capacities of the various types of piles are compared with each other a... View full abstract»

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  • Report on pile testing for AEP transmission lines - part II

    Publication Year: 1976, Page(s):1803 - 1813
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    This paper and the companion paper, Part I, cover the American Electric Power Company (AEP) pile testing program of 1966 and 1967 in southern Michigan and northern Indiana. These two papers present the results of uplift, compression and lateral load tests on numerous types and sizes of piles. Load versus movement and ultimate capacities of the various types of piles are compared with each other an... View full abstract»

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  • Particularities of air insulation behavior

    Publication Year: 1976, Page(s):1814 - 1821
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1136 KB)

    In actual practice the withstand voltage level of air insulation is estimated by an extrapolation based on the 50% breakdown voltage, U50%, and the standard deviation, σ both obtained by laboratory tests. For this extrapolation to be possible it is assumed that the breakdown probability follows a gaussian distribution. It is observed however that in many cases this distribution dev... View full abstract»

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  • Optimal control of a micro-alternator system

    Publication Year: 1976, Page(s):1822 - 1833
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1192 KB)

    This paper describes a laboratory model of a turbogenerator and associated computer system for on-line closed loop control. This has been used to investigate the performauce of the generator with a linear optimal controller, which provides integrated control of governor and excitation systems. Results are presented for both steady-state and transient operating conditions, and these illustrate the ... View full abstract»

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  • Arc extinction performance of SF6gas blast interrupter

    Publication Year: 1976, Page(s):1834 - 1844
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1000 KB)

    With a model SF6gas blast interrupter, arc extinction performance was investigated. The measurements were carried out for di/dt values ranging from 13 ∼ 27 A/µs, for RRRV extending from 3.5∼ 13.0kV/µs and for a fixed pressure of 15kg/cm2. On the other hand, the voltage and current wave forms near current zero in the short line fault (SLF) test circuit we... View full abstract»

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  • Constant power factor control system for HVDC transmission

    Publication Year: 1976, Page(s):1845 - 1853
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (992 KB)

    In inverter operation of a converter for h.v.d.c. transmission, commutation failure is inevitable in such a case that a.c. voltage suddenly drops due to occurrence of a fault in the a.c. system. In this paper, the region of inevitable commutation failure is first discussed and then the constant power factor control system is proposed to squeeze the region. By using this control system, the extinct... View full abstract»

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  • Investigation of the dynamic oscillations of the Ludington pumped storage plant

    Publication Year: 1976, Page(s):1854 - 1862
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB)

    Dynamic oscillations at a large pumped storage plant equipped with excitation systems of nominal voltage response ratio and connected to a tightly coupled transmission grid are investigated. The results of eigenvalue and transient stability investigations correlate well with the characteristics of the disturbance as interpreted from field measurements. However, the actual dynamic stability margin ... View full abstract»

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  • Electromagnetic fields in the near vicinity of transmission line towers

    Publication Year: 1976, Page(s):1863 - 1871
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    Electromagnetic fields in close proximity to transmission line towers are calculated using moment method procedures. The method of moments is especially suited to problems which involve electromagnetic coupling to metal objects and, in principle, most any type geometry can be solved. Generally, this technique involves the solution of an integral equation for the current and charge induced on the o... View full abstract»

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  • The potential for application of energy storage capacity on electric utility systems in the United States-part I

    Publication Year: 1976, Page(s):1872 - 1881
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (907 KB)

    This paper briefly describes the results of the first phase of the systems analysis part of a research project to assess energy storage systems suitable for use by electric utilities. U.S. electric utility systems load and generation data that were collected and analyzed in order to select a number of systems most representative of the electric utility industry are described. The representative sy... View full abstract»

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  • METAP ߞA modular and expandable program for simulating power system transients

    Publication Year: 1976, Page(s):1882 - 1891
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (880 KB)

    This paper describes the algorithms used by METAP - a transients program with a modular, expandable element-library. Each element is a computationally independent entity that can encapsulate an arbitrarily detailed model of a power system device - a synchronous machine or a transformer, for instance - together with a numerical procedure especially suited to the calculation of its responses. New el... View full abstract»

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  • Water tree formation and lifetime estimation in 3.3 kV and 6.6 kV XLPE and PE power cables

    Publication Year: 1976, Page(s):1892 - 1900
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    Insulation of 3.3 kV and 6.6 kV XLPE and PE cables was found to be mechanically stressed by 20 to 100 kg/cm2during the process of water tree formation. Infrared absorption curves change if water trees are created. A mechanism of the generation of water trees is discussed in detail. Critical values to judge the level of insulation quality are recommended as 0.01 ω. F for electrical ... View full abstract»

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  • Compressed air, the solution for generator breakers problems

    Publication Year: 1976, Page(s):1901 - 1910
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2664 KB)

    A high arc voltage being essential to interrupt currents without a zero pause, it has become compulsory to use compressed air as an interrupting medium in generator breakers. The use of compressed air for cooling purposes has resulted in simpler, hence more reliable breakers. The circuit breakers PKG have been subjected to short-circuit current interruptions up to 340 kA. For configurations where ... View full abstract»

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  • Determination of ratio characteristics of cascade connected transformers

    Publication Year: 1976, Page(s):1911 - 1918
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    The actual ratio of output voltage to input voltage of a group of cascade connected transformers increases with increase in load capacitance. In addition, the voltage distribution within a cascade group is frequently non-uniform and usually the final transformer developes the highest voltage. Both the output voltage and the voltage across the final unit can be obtained by multiplying the primary v... View full abstract»

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  • A study and development of high water pressure hot-line insulator washing equipment for 500-kV substation

    Publication Year: 1976, Page(s):1919 - 1928
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1712 KB)

    High water pressure hot-line insulator washing equipment has been developed and in service in Japan as an effective measure to prevent the contamination flashovers of apparatus insulators at 500-kV class substations. This paper presents the results of studies on the development of the equipment, including selection of a suitable water pressure, developments of a nozzle suited for high water pressu... View full abstract»

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  • A frequency and duration method for generating system reliability evaluation

    Publication Year: 1976, Page(s):1929 - 1933
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    The paper presents a method for computing exactly the frequency and duration of load loss events as measures of generating system reliability. The method utilizes an exact state capacity model together with a cumulative state load model which requires no idealization. Efficient computer algorithms for building the exact state capacity model and computing the system reliability indices are presente... View full abstract»

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  • Conductor surface voltage gradients on bipolar HVDC transmission lines

    Publication Year: 1976, Page(s):1934 - 1945
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    The method of successive images is used to obtain accurate values of maximum surface voltage gradients for practical HVdc transmission lines. The results are presented in the form of graphs of gradient factors as a function of the principal line parameters. The gradient factor when multiplied by the line to ground voltage yields the maximum voltage gradient at the conductor surface. The range of v... View full abstract»

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  • [Back cover]

    Publication Year: 1976, Page(s): c4
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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