Influence of SF<sub>6</sub> Solid Decomposition Products on DC Surface Flashover Voltage

XIA Gulin; DENG Jun; DING Weidong; QIAN Kaiyang; WANG Yujia

doi:10.13296/j.1001-1609.hva.2018.05.015

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Influence of SF₆ Solid Decomposition Products on DC Surface Flashover Voltage

更新时间：2025-04-26

- Influence of SF₆ Solid Decomposition Products on DC Surface Flashover Voltage
- High VoltageApparatus Vol. 54, Issue 5, Pages: 91-100(2018)
- 作者机构：
  
  1. 南方电网超高压输电公司检修试验中心
  2. 西安交通大学电力设备电气绝缘国家重点实验室
  3. 国网浙江省电力公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.05.015
  CLC： TM21
- Published：2018
- 稿件说明：
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[1]夏谷林,邓军,丁卫东,钱凯洋,王育佳.SF_6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(05):91-100.

XIA Gulin, DENG Jun, DING Weidong, et al. Influence of SF₆ Solid Decomposition Products on DC Surface Flashover Voltage[J]. High voltageapparatus, 2018, 54(5): 91-100.
[1]夏谷林,邓军,丁卫东,钱凯洋,王育佳.SF_6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(05):91-100. DOI： 10.13296/j.1001-1609.hva.2018.05.015.

XIA Gulin, DENG Jun, DING Weidong, et al. Influence of SF₆ Solid Decomposition Products on DC Surface Flashover Voltage[J]. High voltageapparatus, 2018, 54(5): 91-100. DOI： 10.13296/j.1001-1609.hva.2018.05.015.

摘要

特高压直流穿墙套管对接结构处生成的SF

分解固体产物有可能会附着在绝缘材料表面。探究SF

分解固体产物对于直流沿面闪络电压影响对于特高压直流穿墙套管内部绝缘状况的评估具有重要意义。文中测量了SF

分解固体产物的电气参数

并且和环氧浸渍纸复合绝缘材料的电气参数进行比较。比较结果表明两者之间电气参数存在较大差距

分解固体产物的确有可能对环氧浸渍纸复合绝缘材料直流沿面闪络电压产生影响。借助直流沿面闪络实验平台

将SF

分解固体产物直接附着于环氧浸渍纸复合绝缘材料表面

观察沿面闪络电压的变化。实验结果表明

放电固体产物附着在环氧浸渍纸复合绝缘材料表面的确会引起环氧浸渍纸复合绝缘材料沿面闪络电压下降。其下降程度和固体产物种类、气体压强、电极距离、附着方式等因素密切相关。

Abstract

solid decomposition products generated at junction of the conductive rod of the UHVDC wall bushingmay be attached to the surface of the insulating material. It is of great significance for the evaluation of the insulationcondition to figure out the influence of SF

solid decomposition products on DC surface flashover voltage. The electri-cal parameters of SF

solid decomposition products are measured and compared with the electrical parameters of thecomposite insulation material of epoxy-impregnated paper. The comparison result

shows that there is a large gap be-tween the two electrical parameters

and SF

solid decomposition products may indeed have an effect on the genera-tion of DC surface flashover voltage of the composite insulating material of the epoxy-impregnated paper. In the follow-up experimental

solid decomposition products are attached to the surface of the insulating material directly bymeans of the DC surface flashover experiment platform

and the change of surface flashover voltage is observed. Theexperimental result shows that SF

solid decomposition products will definitely cause the drop of the surface flashovervoltage. Moreover

the decrease degree is closely related to the category of solid products

gas pressure

elec-trode distance

attaching mode.

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⁰

Influence of SF6 Solid Decomposition Products on DC Surface Flashover Voltage

DOI：10.13296/j.1001-1609.hva.2018.05.015

摘要

Abstract

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references

Influence of SF₆ Solid Decomposition Products on DC Surface Flashover Voltage