Discharge Process on Long Rod-Rod Electrodes Under Positive Lightning Impulse Voltage
Discharge Process on Long Rod-Rod Electrodes Under Positive Lightning Impulse Voltage
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DOI：
10.1007/978-3-030-31680-8_82
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发表时间：
2019-08
期刊：
影响因子：
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通讯作者：
A. Gürlek;A. Shirvani;Abdullah Hoshmeh;W. Schufft
中科院分区：
文献类型：
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作者：
A. Gürlek;A. Shirvani;Abdullah Hoshmeh;W. Schufft
本文介绍了正雷电冲击电压作用下棒-棒电极预放电过程的最新研究结果。放电过程的测量结果将显示为气隙长度。在发生故障之前，已经确定了三个连续的放电阶段。这些是流光放电阶段，通道过渡阶段和通道形成阶段。在流注阶段，流注放电出现在正杆电极最重要的。其传播方向是向接地极方向，并与雷电冲击峰值有关。在接近击穿电压的电压峰值处，也在接地杆电极处发生预放电。流注放电到达接地电极时，由于复合和生成，放电在从接地杆电极到正杆电极的通道过渡阶段中传播。当预放电再次到达正杆电极时，放电收缩到正杆电极，形成通道。同时，在接地杆电极处也出现通道。如果两个杆电极的通道彼此相遇，则导致主放电。
This paper presents the recent results of the pre-discharge process on a rod-rod electrode under positive lightning impulse voltage. The measurement results of the discharge process will be shown for an air gap length of. Three consecutive phases of discharge before occurring a breakdown have been identified. These are the streamer discharge phase, the channel transition phase and the channel formation phase. In the streamer phase, streamer discharges emerge foremost at the positive rod electrode. Their propagation goes toward the grounded electrode and it is related to the applied crest value of the lightning impulse value. At voltage crest values near the breakdown voltage also at the grounded rod electrode pre-discharges are occurring. Arriving the streamer discharges at the grounded electrode, the discharges propagate in the channel transition phase from the grounded rod electrode to the positive rod electrode, due to recombination and generation. Reaching the pre-discharges at the positive rod electrode again, then the discharges constrict to the positive rod electrode, which forms a channel. Simultaneously, at the grounded rod electrode a channel is also emerging. If the channels of both rod electrode meet each other, then it leads to the main discharge.