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IEEE Transactions on Electrical Insulation

Issue 3 • June 1981

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  • IEEE Transactions on Electrical Insularion

    Publication Year: 1981, Page(s): c1
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    Freely Available from IEEE
  • IEEE Electrical Insulation Society

    Publication Year: 1981, Page(s): c2
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    Freely Available from IEEE
  • EPRI Workshop on Transmission Line Insulators: The Next Generation

    Publication Year: 1981, Page(s): 153
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    Freely Available from IEEE
  • Pollution Performance of DC Insulators under Operating Conditions

    Publication Year: 1981, Page(s):154 - 164
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1223 KB)

    In order to investigate the behavior of insulators in a natural operating environment, a full-scale insulator testing rack was constructed at the Sylmar DC Converter Station, southern terminal of the ± 400 kV HVDC Pacific Intertie. Strings of insulators have been under testing continuously for almost four years. The insulators are energized directly by the Pacific DC Intertie System voltage and a... View full abstract»

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  • DC Power Line Changing of Macroscopic Particles and Associated Electrical Precipitation on Insulators

    Publication Year: 1981, Page(s):165 - 179
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1741 KB)

    The objective is a model for estimating the rate of electrical precipitation of macroscopic particles onto insulators where the particle charging is due to ions generated by the line and associated apparatus. The general theoretical structure required to describe particle charging and convective turbulent diffusion in a state-space of position and mobility is developed as a basis for predicting de... View full abstract»

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  • Wind Tunnel Studies of the Insulator Contamination Process

    Publication Year: 1981, Page(s):180 - 188
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5936 KB)

    This paper describes a small wind tunnel that was constructed to study the effects of wind, electric field, and insulator geometry on the insulator contamination process. The wind tunnel is operated with a kaolin clay and NaCl salt injection system. A voltage source is also available. Several insulator shapes, with voltage applied, were exposed in the wind tunnel. Preliminary test results indicate... View full abstract»

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  • DC Flashover Voltage Characteristics of Contaminated Insulatirs

    Publication Year: 1981, Page(s):189 - 198
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1226 KB)

    An investigation was made of the influence of the dc power source on the withstand voltage ofntam-contaminated insulators. A thyristor-controlled power source was found stiff enough for the tests. DC contamination tests on various insulators were also carried out. The dc withstand voltage is generally lower than the ac one (rms). There seems to be a tendency that the rate of decrease in dc withsta... View full abstract»

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  • Results of Pollution Tests on Insulators in the ⩾1100 kV Range and Necessity of Testing in the Future

    Publication Year: 1981, Page(s):199 - 208
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1001 KB)

    The necessity of testing at UHV levels depends on the question whether the dielectric strength of polluted insulators is proportional to the insulator length, so that the results at lower voltages can be extrapolated. An analysis of past results of tests on long insulators is presented. The analysis includes evaluation of the corresponding insulation levels in order to show whether the tests have ... View full abstract»

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  • Porcelain and Composite Longrod Insulatoes - A Solution for Future Line Requirements

    Publication Year: 1981, Page(s):209 - 219
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5970 KB)

    Insulators of the longrod-design have been in use in Central Europe for more than 40 years; in several countries they have replaced the previous cap and pintype insulators (in the USA often referred to as suspension-type insulators). More recently, the advantages of longrod insulators have found new places of installation also in other countries, specifically in high-voltage transmission lines bei... View full abstract»

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  • Testing Contaminated Insulators at Project UHV for Voltage Levels of the Future

    Publication Year: 1981, Page(s):220 - 223
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (645 KB)

    The facilities of Project UHV for performing tests on contaminated insulators are presented. Included are discussions on the indoor and outdoor testing capabilities ties and limitations; problems that have been encountered in the early phases of dc testing; and attempts at developing alternate methods for contaminating. The discussions contained in this paper are directed to testing levels of the ... View full abstract»

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  • A Comparison of Contamination Test Methods for DC Line Insulators

    Publication Year: 1981, Page(s):224 - 229
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (773 KB)

    The performance of insulators under contaminated conditions is a main parameter on the cost of dc lines. A study was made to find a meaningful way to rank in the laboratory various shapes of insulators. Three basic methods were compared, the first two having a uniform contamination, while the third method features non-uniform dust contamination sprayed on energized insulators. The importance of so... View full abstract»

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  • Performance of Contaminated Insulators Tested from 200 Kv to 1000 Kv DC

    Publication Year: 1981, Page(s):230 - 234
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    The performance of insulators as determined by artificial tests for various contaminant levels at voltage levels ranging from 200 to 1000 kV dc are presented along with comparisons to field measurements. Included are the effects of polarity, insulator shed design, insulator spacing, and uniform and non-uniform contaminant distribution on individual units. The question of linearity of performance w... View full abstract»

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  • Design of a Polysil DC Insulator

    Publication Year: 1981, Page(s):235 - 241
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (896 KB)

    Under an EPRI sponsored contract, two designs of suspension insulators using Polysil as the dielectric are being developed for use on HVDC overhead transmission lines. These insulators resemble standard porcelain or glass suspension units; however, they are designed to exhibit unique operating characteristics that will make them more desirable for use on HVDC lines. One design is based on the theo... View full abstract»

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  • Insulator Designs for ⩾1200 KV Lines

    Publication Year: 1981, Page(s):242 - 249
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1359 KB)

    The limitations on design data are shown by analyzing laboratory and field test results. For efficiency of leakage distance, either leakage distance/ flashover voltage × V/3 or flashover voltage/leakage distance can be used. A careful analysis shows rather simple design rules for optimum pollution performance of insulators. The point of sorting out systematic and relevant results out of many alre... View full abstract»

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  • A Study on the Use of Internal Grading to Improve the Performance of Insulators

    Publication Year: 1981, Page(s):250 - 257
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (923 KB)

    As transmission line voltages keep increasing, the length of insulator strings has to keep pace. Owingto the non-linear voltage distribution along a string as a result of stray capacitances, the marginal effectiveness of each additional unit of insulator decreases. With an anticipated transmission voltage of up to 1200 kV in the not too distant future, it is likely that the detrimental effects of ... View full abstract»

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  • The Influence of Voltage Grading and Insulation Length on Contamination Performance

    Publication Year: 1981, Page(s):258 - 262
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (666 KB)

    The results of experiments made to determine the effect of voltage distributions on the ac contamination performance of insulators are described. By using both internal and external capacitive grading, the voltage distributions on long insulator strings were varied from highly uniform to highly nonuniform. Results of contamination tests made on these insulators with clean fog are presented, and th... View full abstract»

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  • Experience Dictates Future HVDC Insulator Requirements

    Publication Year: 1981, Page(s):263 - 266
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (646 KB)

    Failure to observe past ± 400 kV HVDC operating experience in an environment of light pollution can lead to trouble for new ± 500 kV and ± 600 kV lines in similar areas. Over 10 years data is presented on both station and line insulation for the Sylmar Converter Station and the Pacific HVDC line near Los Angeles. Costly station and line maintenance procedures are discussed. Experience with avai... View full abstract»

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  • Electrical Reliability of DC Line Insulators

    Publication Year: 1981, Page(s):267 - 276
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3107 KB)

    Recent investigations have shown that the environment of dc lines is more damaging to insulation than that of comparable ac lines. Various mechanisms which can lead to failure of ceramic or composite insulators have been investigated. Results are reported for ceramic insulators on thermal breakdown and ionic migration. For composite insulators, we have studied ionic migration through the fiber gla... View full abstract»

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  • IEEE Electrical Insulation Society

    Publication Year: 1981, Page(s): 276-a
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    Freely Available from IEEE
  • Information for authors

    Publication Year: 1981, Page(s): 276b
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Aims & Scope

This Transactions ceased production in 1993. The current retitled publication is  IEEE Transactions on Dielectrics and Electrical Insulation.

Full Aims & Scope