C4-PFN-CO2混合气体在145 kV隔离开关结构下的灭弧性能研究

doi:10.16628/j.cnki.2095-8188.2021.12.002

电器与能效管理技术 ›› 2021, Vol. 0 ›› Issue (12): 7-12.doi: 10.16628/j.cnki.2095-8188.2021.12.002

C4-PFN-CO₂混合气体在145 kV隔离开关结构下的灭弧性能研究

王炜¹, 罗颜², 黄青丹¹, 卓然², 宋浩永¹, 王邸博²

1.广东电网有限责任公司广州供电局, 广东广州 510000
2.南方电网科学研究院有限责任公司, 广东广州 510080

收稿日期:2021-09-28 出版日期:2021-12-30 发布日期:2022-01-24
作者简介:王炜(1988—),女,工程师,主要从事电力化学相关的研究工作。|罗颜(1991—),男,工程师,主要从事新型绝缘材料及电气设备安全运行研究。|黄青丹(1982—),男,教授级高工,主要从事绿色绝缘材料与储能技术研究。
基金资助:
南方电网公司重点科技项目(ZBKJXM20190087)

Research on Arc-Extinguishing Performance of C4-PFN-CO₂ Mixed Gas in 145 kV Disconnecting Switch

WANG Wei¹, LUO Yan², HUANG Qingdan¹, ZHUO Ran², SONG Haoyong¹, WANG Dibo²

1. Guangzhou Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Guangzhou 510000,China
2. CSG Electric Power Research Institute Co.,Ltd.,Guangzhou 510080,China

Received:2021-09-28 Online:2021-12-30 Published:2022-01-24

摘要/Abstract

摘要：

为了验证C4-PFN气体在145 kV隔离开关中的灭弧能力以及应用前景,选取了C4-PFN-CO₂混合气体作为介质进行开断实验。先对C4-PFN气体的饱和蒸气压特性进行了研究,得到了在-25 ℃液化温度限制下C4-PFN-CO₂混合气体的最佳混合比例。在-25 ℃温度下C4-PFN-CO₂混合气体中C4-PFN的最大比例为5.8%。实验发现,在0.6 MPa情况下,C4-PFN-CO₂混合气体的弧压相对SF₆低,且电弧能量注入量也小,说明SF₆的能量耗散速率更高,且灭弧能力更优良。提高压力至0.7 MPa时C4-PFN-CO₂混合气体的弧压与0.6 MPa下的SF₆很接近,且起弧时也出现电压尖峰,说明气压升高明显提升了混合气体的能量耗散速率,提高了灭弧性能。从燃弧时间分散性上看,气压提升也降低了分散性,对于提高开断过程的电弧稳定性有重要意义。

关键词: SF₆替代气体, C4-PFN-CO₂混合气体, 隔离开关, 灭弧性能

Abstract:

In order to verify C4-PFN arc extinguishing ability in the 145 kV disconnecting switch and the application prospects,C4-PFN-CO₂ mixed gas is selected as the medium for the current interruption experiments.Before the experiments,the saturated vapor pressure characteristics of C4-PFN gas was studied,and the optimal mixing ratio of C4-PFN-CO₂mixed gas was obtained under the limit of -25 ℃ liquefaction temperature.The maximum proportion of C4-PFN in the mixed gas is 5.8% at -25 ℃.Through the experiments,it can be found that at 0.6 MPa,the arc voltage of the C4-PFN-CO₂ mixed gas is lower than that of SF₆,and the amount of arc energy injection is also smaller.It shows that the energy dissipation rate of SF₆is higher and the arc extinguishing ability is better.When the pressure increase to 0.7 MPa,the arc voltage of the C4-PFN-CO₂ mixed gas is very close to SF₆ at 0.6 MPa,and voltage spikes also appear at the start of the arc.It means that the increase of pressure can significantly improve the energy dissipation rate of the mixed gas and the arc extinguishing performance.For arc time dispersion,the increase of pressure also reduces the dispersion,which significantly improves the arc stability during the current interruption process.

Key words: SF₆ alternative gases, C4-PFN-CO₂ mixed gas, disconnecting switch, arc extinguishing performance

中图分类号:

TM564

王炜, 罗颜, 黄青丹, 卓然, 宋浩永, 王邸博. C4-PFN-CO₂混合气体在145 kV隔离开关结构下的灭弧性能研究[J]. 电器与能效管理技术, 2021, 0(12): 7-12.

WANG Wei, LUO Yan, HUANG Qingdan, ZHUO Ran, SONG Haoyong, WANG Dibo. Research on Arc-Extinguishing Performance of C4-PFN-CO₂ Mixed Gas in 145 kV Disconnecting Switch[J]. LOW VOLTAGE APPARATUS, 2021, 0(12): 7-12.

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C4-PFN-CO₂混合气体在145 kV隔离开关结构下的灭弧性能研究

Research on Arc-Extinguishing Performance of C4-PFN-CO₂ Mixed Gas in 145 kV Disconnecting Switch

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