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AC circuit breakers: Pollution flashover performance of various types of interrupter head

AC circuit breakers: Pollution flashover performance of various types of interrupter head

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The axial electric stress necessary to cause external flashover of the interrupter porcelain of various designs of circuit breaker has been determined as a function of the severity of an artificial salt fog; related investigations have been conducted at a marine testing station. The much inferior performance of the horizontal head to that of the vertical one is explained by using a simple mathematical model to analyse the influence of saline drainage from the porcelain. The findings are discussed from the viewpoint of trying to realise the full potential of the outdoor SF6 circuit breaker on a 400 kV system — in particular, for the synchronising function. The need for further research to enhance the pollution flashover strength of a horizontal barrel insulator is clearly shown. The experimental results are analysed with regard to the validity of IEC document 815.

Inspec keywords: switchgear testing; insulator testing; SF6 insulation; flashover; electric strength; interrupters; insulator contamination; porcelain insulators; gas blast circuit breakers

Other keywords: vertical barrel insulator; pollution flashover strength; external flashover; 400 kV; marine testing station; AC circuit breakers; IEC document 815; mathematical model; synchronising function; horizontal barrel insulator; SF6; pollution flashover performance; saline drainage; artificial salt fog; porcelain insulator

Subjects: Switchgear; Power line supports, insulators and connectors; Inorganic insulation; Gaseous insulation, breakdown and discharges

References

    1. 1)
      • R.E. Carberry , H.M. Schneider . Evaluation of RTV coating for station insulatorssubjected to coastal contamination. IEEE Trans. , 1 , 577 - 585
    2. 2)
      • Lambeth, P.J., Looms, J.S.T., Sforzini, M., Cortina, R., Porcheran, Y., Claverie, P.: `The salt fog test and its use in insulation selection for polluted localities', T73 178-1, IEEE PES, winter meeting, 1973, New York.
    3. 3)
      • J.P. Holtzhausen , L.P. du Toit . The influence of the arc root in flashover models ofpolluted insulators with practical shapes. Trans. SAIEE , 88 - 89
    4. 4)
      • L.L. Alston , S. Zoledziowski . Growth of discharges on polluted insulation. Proc. IEE , 7 , 1269 - 1276
    5. 5)
      • IEC 815: ‘Guide for the selection of insulators inrespect ofpolluted conditions’. 1986.
    6. 6)
      • F. Erler . Zum Kriechuberschlag dicker Isolatoren bei Wechselspannung. Elektrie , 100 - 102
    7. 7)
      • Kawamura, T., Seta, T., Tanabe, M., Naito, K.: `Performance of large bushing shells forUHV transmission system under polluted conditions', 33–03, CIGRE, 1988.
    8. 8)
      • R. Wilkins . Flashover voltage of high-voltage insulators with uniform surface-pollutionfilms. Proc. IEE , 3 , 457 - 465
    9. 9)
      • Houlgate, R.G., Lambeth, P.J., Roberts, W.J.: `The performance of insulators at EHV andUHV in a coastal environment', 33–01, CIGRE, 1982.
    10. 10)
      • P.J. Lambeth . Effect of pollution on high-voltage insulators. Proc. IEE , 1107 - 1130
    11. 11)
      • IEC Publication 507: ‘Artificial pollution tests onhigh voltageinsulators to be used on ACsystems’. 1987.
    12. 12)
      • Lambeth, P.J.: `Variable voltage application for insulator pollution tests', 87SM562–2, IEEE/PES summer meeting, 1987.
    13. 13)
      • S.S. Low , E.W. Bohne . Flashover across porcelain-clad circuit breakers due toatmospheric contamination. IEEE Trans. , 3 , 1113 - 1121
    14. 14)
      • Swift, D.A.: `Flashover of polluted insulators: electric field in the arc', 30.10, Sixth international symposium on High voltage engineering, 1989.
    15. 15)
      • M. Sforzini . A critical comparison of artificial pollution test methods for HVinsulators. Electra , 117 - 136
    16. 16)
      • H.M. Ryan , G.R. Jones . (1989) SF6 switchgear.
    17. 17)
      • D.A. Swift . Flashover across the surface of an electrolyte: arresting: arc propagationwithnarrow metal strips. IEE Proc. A , 553 - 564
    18. 18)
      • J.S.T. Looms . (1990) Insulators for high voltages.
    19. 19)
      • C.H.A. Ely , R.G. Kingston , P.J. Lambeth . Arficial- and natural-pollution tests onoutdoor 400 kV substation insulators. Proc. IEE , 1 , 99 - 109
    20. 20)
      • F.A.M. Rizk . Mathematical models for pollution flashover. Electra , 71 - 103
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