Testing of polluted insulators—the present situation and problems of the future

Abstract The phenomena of atmospheric and industrial pollution stands as the major problem for, and perhaps deterent to, the steady advancement of open air transmission at the ultra high voltage (UHV) level. This paper discusses this problem in three parts. In Part I, the scope and history of the problem is reviewed, and its importance is stressed. Part II reviews the present knowledge of the physical nature of the phenomenon involved. Part III covers the testing of polluted insulator strings, and discusses methods in use today. The importance of the parameters of the test voltage source is emphasized. The influence of switching impulse tests is reviewed. The paper closes with some of the remedies currently in practice.

[1]  S. Zoledziowski.  Time-to-Flashover Characteristics of Polluted Insulation , 1968 .

[2]  C.H.A. Ely,et al.  Artificial-pollution test for high-voltage outdoor insulators , 1964 .

[3]  Toru Okada,et al.  Switching Surge Flashover Characteristics of Long Disk Insulator Strings Under Polluted Conditions , 1970 .

[4]  L. Alston,et al.  Growth of discharges on polluted insulation , 1963 .

[7]  Tatsuo Kawamura,et al.  Japanese Method of Artificial Pollution Tests on Insulators , 1968 .

[8]  J. S. Forrest,et al.  Research on the performance of high-voltage insulators in polluted atmospheres , 1960 .

[9]  P. Claverie.  Predetermination of the Behaviour of Polluted Insulators , 1971 .

[10]  A. J. McElroy,et al.  Insulators with Contaminated Surfaces, Part II: Modeling of Discharge Mechanisms , 1970 .

[11]  Mikio Kawai,et al.  Tests on Salt-Contaminated Insulators in Artificial and Natural Wet Conditions , 1969 .

[12]  G. Malaguti,et al.  How the results of dielectric tests on external insulation in natural conditions may be predicted from indoor laboratory test results , 1969 .

[13]  W. J. Roberts,et al.  Switching-impulse flashover of air gaps and insulators in an artificially polluted atmosphere , 1968 .

[14]  F. J. Turner,et al.  Switching Surge Performance of Contaminated Insulators , 1971 .

[15]  B. F. Hampton,et al.  Flashover mechanism of polluted insulation , 1964 .

[16]  F. J. Turner,et al.  A New Contamination Test Method , 1969 .

[17]  Mikio Kawai.  Flashover Tests at Project UHV on Salt-Contaminated Insulators, Part II , 1970 .