Insulation Performance of 550kV SF<sub>6</sub>/N<sub>2</sub> Busbar

NIU Wenjun; WEI Junmei; ZHANG Duo; SUN Yongheng

doi:10.13296/j.1001-1609.hva.2014.01.014

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Insulation Performance of 550kV SF₆/N₂ Busbar

更新时间：2025-04-26

- Insulation Performance of 550kV SF₆/N₂ Busbar
- High VoltageApparatus Vol. 50, Issue 1, Pages: 77-80(2014)
- 作者机构：
  
  新东北电气集团高压开关有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.01.014
  CLC： TM855.1
- Published：2014
- 稿件说明：
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[1]牛文军,魏俊梅,张铎,孙永恒.550kV SF_6/N_2充气母线绝缘性能研究[J].高压电器,2014,50(01):77-80.

NIU Wenjun, WEI Junmei, ZHANG Duo, et al. Insulation Performance of 550kV SF₆/N₂ Busbar[J]. High voltageapparatus, 2014, 50(1): 77-80.
[1]牛文军,魏俊梅,张铎,孙永恒.550kV SF_6/N_2充气母线绝缘性能研究[J].高压电器,2014,50(01):77-80. DOI： 10.13296/j.1001-1609.hva.2014.01.014.

NIU Wenjun, WEI Junmei, ZHANG Duo, et al. Insulation Performance of 550kV SF₆/N₂ Busbar[J]. High voltageapparatus, 2014, 50(1): 77-80. DOI： 10.13296/j.1001-1609.hva.2014.01.014.

摘要

由于SF6气体的温室效应

减少SF6气体的使用具有深远的社会意义

用SF6/N2混合气体取代纯SF6气体作为高压电器设备的绝缘介质是减少使用SF6气体的有效措施。介绍了SF6/N2混合气体的优点。从气体放电理论出发

对不同比例SF6/N2混合气体的绝缘性能进行了分析

结果表明:SF6体积分数仅为20%的SF6/N2混合气体击穿强度为相同气体压力纯SF6的70%左右;若SF6体积分数为20%的SF6/N2混合气体的击穿强度要达到纯SF6气体的击穿强度

其总压力应为纯SF6气体的1.4倍。新东北电气集团高压开关有限公司研制的采用20%SF6和80%N2混合气体绝缘

总压为0.6 MPa的550 kV SF6/N2混合气体母线在机械工业高压电器产品质量检测中心（沈阳）顺利通过了绝缘型式试验

且其雷电冲击耐受水平高达1 842.5 kV。因此

用SF6/N2混合气体作为550 kV母线的绝缘介质是切实可行的。

Abstract

Due to greenhouse effect of SF6

it is necessary to substitute SF6/N2gas mixture for SF6gas as insulation medium in electric power equipment. In this paper

advantages of SF6/N2mixtures are discussed. The insulation performances of the SF6/N2gas mixtures with different SF6contents are analyzed according to gas discharge theory.The results show that: the critical field strength of the SF6/N2gas mixture with 20% of SF6in volume reaches 70%that of pure SF6under same pressure

and the SF6/N2gas mixture with 20% SF6can achieve the same critical field strength with that of pure SF6if the pressure of the mixture is 1.4 times of that of pure SF6. The 0.6 MPa 20%SF6/80%N2gas mixture insulated 550 kV busbar developed by New Northeast Electric Group High Voltage Switchgear Co.

Ltd. has passed the insulation tests in High Voltage Apparatus Quality Test & Research Center of Machinery Industry（Shenyang）

and its lightning impulse withstand level reaches to 1 842.5 kV.

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Insulation Performance of 550kV SF6/N2 Busbar

DOI：10.13296/j.1001-1609.hva.2014.01.014

摘要

Abstract

关键词

Keywords

references

Insulation Performance of 550kV SF₆/N₂ Busbar