Application of C6F12O/CO2 mixture in 10 kV medium-voltage switchgear
Application of C6F12O/CO2 mixture in 10 kV medium-voltage switchgear
复制标题
C6F12O/CO2混合物在10 kV中压开关柜中的应用
DOI：
10.1049/iet-smt.2018.5482
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发表时间：
2019
影响因子：
1.4
通讯作者：
Li Yi
中科院分区：
文献类型：
--
作者：
Tian Shuangshuang;Zhang Xiaoxing;Xiao Song;Zhang Ji;Chen Qi;Li Yi
由于SF6的高全球变暖潜能值（GWP），在电气设备中使用新气体引起了越来越多的关注。研究了环保型气体十二氟-2-甲基戊-3-酮（C6 F12 O）与CO2混合气体在10 kV中压开关柜中的应用。本文首先论述了C6 F12 O的基本物理化学性质，并对其在装备中应用的毒性和安全性进行了分析。然后，在实验室中测量了击穿电压。在0.1 ~ 0.2MPa下，对混合比为2%、4%和6%的材料进行了工频击穿试验，分析了电场利用系数对击穿性能的影响。最后确定了合适的混合比，并在负荷开关柜和断路器开关柜中进行了试验，包括工频耐压试验和雷电冲击试验。试验结果表明，在大于0.14 MPa的压力下，4%C6F12O和CO2均达到标准值，具有作为10 kV开关柜绝缘气体的潜力。
Due to the high global warming potential (GWP) of SF6, the use of new gases in electrical equipment has drawn increasing attention. Here, the application of environmental‐friendly gas dodecafluoro‐2‐methylpentan‐3‐one (C6F12O) and CO2mixture in 10 kV medium‐voltage switchgear is studied. First, the basic physical and chemical properties of C6F12O were discussed, and the toxicity and safety of its application in equipment was analysed. Then, the breakdown voltage was measured in the laboratory. The power‐frequency breakdown test was carried out with the mixing ratio of 2, 4 and 6% at 0.1∼0.2 MPa, and the influence of utilisation coefficient of electric field on the breakdown performance was analysed. Finally, the appropriate mixing ratio was determined and tested in the load switch cabinet and the circuit breaker switch cabinet, including the power frequency withstand voltage test and the lightning impulse test. The test results show that 4% C6F12O and CO2meet the standard value tested at a pressure of >0.14 MPa, which has the potential to be used as an insulating gas in a 10 kV switchgear.