高压电器2018，Vol.54Issue(5)：91-100,10.DOI:10.13296/j.1001-1609.hva.2018.05.015
SF6分解固体产物对于直流沿面闪络电压的影响
Influence of SF6 Solid Decomposition Products on DC Surface Flashover Voltage
夏谷林 1邓军 1丁卫东 2钱凯洋 3王育佳2
作者信息
- 1. 南方电网超高压输电公司检修试验中心,广州 510663
- 2. 西安交通大学电力设备电气绝缘国家重点实验室,西安 710049
- 3. 国网浙江省电力公司,杭州 310007
- 折叠
摘要
Abstract
SF6 solid decomposition products generated at junction of the conductive rod of the UHVDC wall bushing may be attached to the surface of the insulating material. It is of great significance for the evaluation of the insulation condition to figure out the influence of SF6 solid decomposition products on DC surface flashover voltage. The electrical parameters of SF6 solid decomposition products are measured and compared with the electrical parameters of the composite insulation material of epoxy-impregnated paper. The comparison result shows that there is a large gap between the two electrical parameters, and SF6 solid decomposition products may indeed have an effect on the generation of DC surface flashover voltage of the composite insulating material of the epoxy-impregnated paper. In the follow-up experimental, SF6 solid decomposition products are attached to the surface of the insulating material directly by means of the DC surface flashover experiment platform, and the change of surface flashover voltage is observed. The experimental result shows that SF6 solid decomposition products will definitely cause the drop of the surface flashover voltage. Moreover, the decrease degree is closely related to the category of solid products, SF6 gas pressure, electrode distance, attaching mode.关键词
特高压直流穿墙套管/SF6分解固体产物/沿面闪络Key words
UHVDC wall bushing/SF6 solid decomposition products/surface flashover引用本文复制引用
夏谷林,邓军,丁卫东,钱凯洋,王育佳..SF6分解固体产物对于直流沿面闪络电压的影响[J].高压电器,2018,54(5):91-100,10.
