SF/sub - 6/和SF/sub - 6/-N/sub - 2/-混合物负脉冲应力下的电晕

1988. Annual Report., Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1988-10-16 DOI:10.1109/CEIDP.1988.26338

W. Pfeiffer, H. Welke

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引用次数: 1

摘要

在SF/sub - 6/-N/sub - 2/混合物中，测量了负脉冲应力、单脉冲和重复脉冲的电晕起始电压，并与直流电晕起始电压进行了比较。结果表明，脉冲电晕起始电压降低了几个百分点。只有在压力较高(0.28-0.3 MPa)和SF/sub - 6/含量较高(75%以上)的情况下，才会检测到这种行为的例外。只要能检测到脉冲电晕，它总是在第一个脉冲时开始。第一个可检测到的电晕脉冲在电压应力开始后30秒开始

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Corona at negative impulse stress in SF/sub 6/ and SF/sub 6/-N/sub 2/-mixtures

Measurements of the corona onset voltage for negative impulse stress, single and repeating pulses, in SF/sub 6/-N/sub 2/ mixtures are compared with the DC-corona onset voltage. It is shown that the impulse corona onset voltage is some percent lower. Exceptions to this behaviour have been detected only for higher pressures (0.28-0.3 MPa) and a high content of SF/sub 6/ (above 75%). Whenever impulse corona could be detected, it started always during the first pulse. The first detectable corona pulse started 30 ns after the beginning of the voltage stress.<>

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1988. Annual Report., Conference on Electrical Insulation and Dielectric Phenomena

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