Sparkover in the rod–plane gap under combined direct and impulse voltages

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Sparkover in the rod–plane gap under combined direct and impulse voltages

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Experiments are described in which composite voltages, produced by superimposing positive and negative switching impulse voltages on pre-stressing positive or negative direct voltages, are applied to a rod–plane gap of lengths up to 1 m. Changes in 50% sparkover voltages are described over a range of positive and negative pre-stressing voltages; it is shown that negative pre-stressing always reduces the composite sparkover voltage, but that positive pre-stress increases the positive composite sparkover voltage and reduces the negative one. Recordings of photomultiplier observations and ‘still’ photography of pre-breakdown corona have been made at the 50% sparkover level and the results related to the sparkover characteristics. It is shown that the latter depend on the way in which leader initiation is affected by the preceding DC corona.

Inspec keywords: overvoltage protection; power system transients; power system protection; high-voltage engineering; air gaps

Other keywords: composite voltages; positive pre-stress; sparkover; preceding DC corona; combined direct/impulse voltages; photomultiplier observations; leader initiation; still photography; rod-plane gap; negative pre-stressing; HV engineering

Subjects: Protection apparatus

References

    1. 1)
      • C. Menemenlis , G. Harbec . Behaviour of air insulating gaps of DC systemsunder impulse, DC and composite voltages. IEEE Trans. , 2065 - 2075
    2. 2)
      • L. Niemeyer , L. Ullrich , N. Wiegart . The mechanism of leader breakdown in electronegative gases. IEEE Trans. , 309 - 324
    3. 3)
      • Allen, N.L., Boutlendj, M., Stassinopoulos, C.A., Yakintiios, C.G.: `A new phenomenon occurring in the breakdown of pre-stressed conductor-rodgapsunder impulse voltages', 2936, 1995 Proceedings of 9th international symposium on Highvoltage engineering, 1995, Graz.
    4. 4)
      • Les Renardieres Group . Positive discharges in long air gaps at Les Renardières. Electra , 31 - 153
    5. 5)
      • Y. Watanabe . Influence of pre-existing DC voltage on switching surge flashover characteristics. IEEE Trans. , 964 - 969
    6. 6)
      • N. Knudsen , F. Iliceto . Flashover tests on large air gaps with DC voltage andwith switching surges superimposed on DC voltage. IEEE Trans. , 781 - 788
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