ELUCIDATION OF CREEPING STREAMER PROPAGATION MECHANISMS IN SOLID-LIQUID INTERFACE

固液界面中蠕动流条传播机制的阐明

• 批准号: 08650392
• 负责人: HANAOKA Ryoichi
• 金额: $ 1.28万
• 依托单位: KANAZAWA INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650392/
• 关键词: lightning impulse voltage; creeping streamer; transformer oil; liquid nitrogen; air; solid interface; liquid; polyethylene insulated wire; 沿面放電; ストリーマ進展

The creepage discharge phenomena and discharge propagation mechanisms in a air/solid and a liquid/solid interfaces were investigated.In a air/solid insulation system, the creepage discharges traveling over the surface of aerial insulated wire were investigated under a lightning impulse voltage condition. The polarity effect both on the shapes and the lengths of the creepage discharge was clarified under dry and wet conditions of the wire surface. It was worthy of notice that the lengths of a negative creeping streamer in the dry condition of wire were separated into two regions (increase and decrease) as a function of the voltage. This phenomenon was explained by the transition of the discharge aspects from clinging type to jumping type. It was also found that the streamer propagation was significantly affected by the electric field strength of wire surface.In a lipuid/solid insulation system, firstly, the effect of a polyethylene insulator inserted along the plane of symmetry of a bla … More de-plane electrode geometry on the conduction characteristics in transformer oil under D.C.stresses was investigated. It was found that conduction currents were exceedingly decreased by the presence of the insulator. This phenomenon was discussed on the basis of the electrohydrodynamic (EHD) motion as well as the electric field of the blade edge taking into account the insulator surface charging. Secondly, the behavior of the creepage discharges on the solid insulator surface in transformer oil was investigated under a lightning impulse voltage application. It was found that the creepage discharges were significantly affected by the presence of a surrounding grounded metal electrode. Thirdly, the impulse creepage discharge phenomena on the polyethylene insulator surface in liquid nitrogen were investigated under the various pressure conditions. The relationship between the discharge length and the vaporization of the lipuid was clarified. The effect of insulator surface charging on the discharge propagation was also clarified. Less

研究了空气/固体和液体/固体界面的爬电现象和放电传播机理，在空气/固体绝缘系统中，研究了雷电冲击电压作用下架空绝缘导线表面的爬电现象。阐明了导线表面干燥和潮湿条件下极性对爬电放电形状和长度的影响。值得注意的是，在导线干燥状态下，负爬流的长度作为电压的函数分为两个区域（增加和减少）。这一现象是由贴壁型向跳跃型的转变所解释的。在液体/固体绝缘系统中，首先研究了聚乙烯绝缘子沿着绝缘子对称面插入对流注传播的影响，然后研究了聚乙烯绝缘子沿绝缘子对称面插入对流注传播的影响。 ...更多信息 研究了直流应力下离面电极几何形状对Transformer油中导电特性的影响。有人发现，传导电流大大减少了绝缘体的存在。基于电流体动力学（EHD）运动以及考虑绝缘体表面充电的叶片边缘电场，对这一现象进行了讨论。其次，研究了雷电冲击电压作用下Transformer油中固体绝缘子表面的爬电行为。结果发现，周围接地金属电极的存在下，爬电放电显着的影响。第三，研究了液氮中聚乙烯绝缘子表面在不同压力条件下的冲击爬电现象。阐明了放电长度与液体汽化的关系。研究了绝缘子表面充电对放电传播的影响。少

项目成果

香林 利幸: "液体窒素中の沿面放電進展におよぼす気泡の影響" 平成9年電気関係学会北陸支部連合大会講演論文集. A-14. 14 (1997)

Toshiyuki Kobayashi：“气泡对液氮中蠕变放电过程的影响”1997 年电气相关协会北陆分会会议记录 A-14 (1997)。

太田 奏基: "油中のインパルス沿面放電現象(その1)(PE電線表面のストリーマ進展に及ぼす側面電極の効果)" 平成8年電気関係学会北陸支部連合大会講演論文集. A-72. 74 (1996)

Soki Ota：“油中的脉冲蠕变放电现象（第 1 部分）（侧电极对 PE 线表面流光发展的影响）”1996 年电气相关协会北陆分会会议记录 A-72（1996 年）。

R.Hanaoka: "Influence of Insulator along the Plane of Symmetry of a Blade-Plane Gap on I-V Characteristics in Transformer Oil" JOURNAL OF ELECTROSTATICS. Vol.40&41. 167-172 (1997)

R.Hanaoka：“沿叶片平面间隙对称面的绝缘体对变压器油 I-V 特性的影响”静电杂志。

西 敏行: "架空絶縁電線表面の沿線放電における電線表面電界の影響" 電気学会論文誌 B. 118. 85-91 (1998)

Toshiyuki Nishi：“电线表面电场对架空绝缘电线表面线路放电的影响”日本电气工程师学会会刊 B.118.85-91（1998）

蜷川 貴康: "絶縁液体の流動現象が絶縁特性に及ぼす影響" 平成9年電気関係学会北陸支部連合大会講演論文集. A-13. 13 (1997)

Takayasu Ninakawa：“绝缘液体的流动现象对绝缘性能的影响”1997 年电气相关协会北陆分会会议记录 A-13（1997 年）。