Study on current reduction via ground into power generation systems near coast by controlling lightning surges due to high pressure gas phase

通过控制高压气相引起的雷电涌流来减少通过地面进入近海岸发电系统的电流的研究

• 批准号: 23560339
• 负责人: OKANO Daisuke
• 金额: $ 3.33万
• 依托单位: Tokai University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560339/
• 关键词: 落雷; 高圧気相; 雷サージ; コンクリート; 内部雷保護; 模擬海水; 雷インパルス電源; 放電様相; パッシェンカーブ; 雷インパルス放電; 放電開始電圧; 放電インピーダンス; モルタル

To reduce the lightning current via the ground into power generation systems near the coast, the impulse discharge experiments have been performed using the building material gap soaked by a simulated sea under high-pressure dry-air conditions. The results are as follows; (1) in the case of mortar gap soaked by a simulated sea, using the KCl water solution, the discharge waveforms has unipolar ones and the discharge threshold voltage is reduced to 33 % compared with the dry gap, (2) in the case of concrete gap soaked by a simulated sea in dry-air within 5 atm, the discharge emission pattern widely expands on the concrete surface and the peak current amplitudes are also reduced to 47 % compared with the dry gap, where this means that discharge resistance in a concrete volume increases with increasing air pressures, and (3) it is considered that an application of the concerned study is available against lightning current invasion in the region surround a grounding system.

为了减少雷电流经地面进入海岸附近的发电系统，利用高压干燥空气条件下模拟海水浸泡的建筑材料间隙进行了脉冲放电实验。结果如下； (1) 在模拟海水浸泡砂浆间隙的情况下，使用KCl水溶液，放电波形为单极性，放电阈值电压较干燥间隙降低至33%，(2)混凝土间隙在 5 atm 以内的干燥空气中经过模拟海水浸泡后，放电发射模式在混凝土表面广泛扩展，峰值电流幅值也比干燥间隙降低到 47%，这意味着混凝土间隙中的放电电阻混凝土体积随着气压的增加而增加，并且（3）认为相关研究的应用可用于防止接地系统周围区域的雷电流侵入。

项目成果

Impedance Property of Lightning Impedance Discharge in Short Composite Gap Consisting of Air and Water

空气和水短复合间隙内雷电阻抗放电的阻抗特性

• 发表时间: 2012
• 作者: D. Okano

大気中ストリーマ放電路のインピーダンス特性

大气流光放电路径的阻抗特性

• 发表时间: 2011
• 作者: 岡野大祐

放電学会

出院协会

• 作者: 岡野大祐; 駒井知央; 坪田淳:大気圧不均一ギャップにおけるリーダ放電路のインピーダンス特性
• 通讯作者: 坪田淳:大気圧不均一ギャップにおけるリーダ放電路のインピーダンス特性

Impedance Property of Lightning Impulse Discharge in Short Composite Gap Consisting of Air and Water

空气和水短复合间隙中雷电冲击放电的阻抗特性

• 作者: Daisuke Okano

Time-lag properties of corona streamer discharges between impulse sphere and dc needle electrodes under atmospheric air conditions

大气条件下脉冲球与直流针电极之间电晕流光放电的时滞特性

• 发表时间: 2013
• 作者: D. Okano