摘要
为评估HFO-1336mzz(E)/X混合气体在高压气体绝缘设备中应用的可行性,计算了HFO-1336mzz(E)与3种缓冲气体分别混合后的配置方案,并通过试验得到其工频绝缘特性。该文考虑–15℃、–20℃、–25℃为最低使用温度约束条件,通过计算饱和蒸气压得到混合气体中HFO-1336mzz(E)的临界摩尔占比,并对该占比下的HFO-1336mzz(E)混合气体进行了工频放电试验。研究结果表明:HFO-1336mzz(E)与空气(Air)混合时协同效应最优;以–15℃为最低使用温度约束,0.5 MPa 8.0%HFO-1336mzz(E)/92.0%Air混合气体的最高击穿电压仅为相同气压下SF_(6)的65%,相当于0.26 MPa SF_(6)的绝缘水平,且混合气体放电后会出现固体沉积物。综合考虑混合气体的液化温度、绝缘强度以及放电沉积物,认为HFO-1336mzz(E)混合气体在高压气体绝缘设备中应用存在局限性。
To evaluate the application feasibility of HFO-1336mzz(E)mixed gas in high pressure gas insulation equipment,the configuration scheme of HFO-1336mzz(E)mixed with three buffer gases is calculated,and the power frequency insulation strength of HFO-1336mzz(E)is obtained through tests.In this paper,the critical molar proportions of HFO-1336mzz(E)in the gas mixture is obtained by calculating the saturated vapor pressure under the constraint conditions of–15℃,–20℃,and–25℃,and the power-frequency breakdown test is carried out for the HFO-1336mzz(E)gas mixture with these proportions.The results show that HFO-1336mzz(E)has the best synergistic effect when mixed with air.With−15℃as the minimum operating temperature constraint,the maximum breakdown voltage of 0.5 MPa 8.0%HFO-1336mzz(E)/92.0%Air mixture is only 65%of SF_(6)at the same pressure,which is equivalent to the insulation level of 0.26 MPa SF_(6),and solid deposits appear after discharge of the mixture gas.The liquefaction temperature,insulation strength,and discharge deposits of the gas mixture are taken into consideration,and it is concluded that the application of HFO-1336mzz(E)gas mixture in high pressure gas insulation equipment has limitations.
作者
任书波
周文俊
郑宇
王宝山
董利
罗运柏
REN Shubo;ZHOU Wenjun;ZHENG Yu;WANG Baoshan;DONG Li;LUO Yunbai(State Key Laboratory of Power Grid Environmental Protection,Wuhan University,Wuhan 430072,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,China;Beijing Yuji Science&Technology Co.,Ltd.,Beijing 100089,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2023年第11期4527-4534,共8页
High Voltage Engineering
基金
国家重点研发计划(2021YFB2401400)
国家电网公司科技项目(SGAHDK00LFJS2200332)。
