CAJ | 학술논문

近年来，寻找SF6替代气体的研究工作成为各国科学家和电力部门需要解决的迫切问题。从局部放电绝缘特性角度出发，对CF3I/CO2与CF3I/N2两种混合气体在不同气压、混合比和间距下的局部放电起始电压(工频负半周局放起始电压(negative partial discharge inception voltage，PDIV-)和正半周局放起始电压(positive partial discharge inception voltage，PDIV+))进行测量和比较，同时对两种混合气体的PDIV-和 PDIV+值随混合比变化的协同效应进行计算和对比分析。试验结果表明：相同试验条件下 CF3I/CO2混合气体的 PDIV-值和 PDIV+值分别约为 CF3I/N2混合气体的1.2倍和1.0~1.4倍，且CF3I/CO2混合气体PDIV-和PDIV+值随混合比变化的协同效应也均明显优于CF3I/N2混合气体。故综合考虑温室效应潜在值(global warming potential，GWP)、液化温度以及局部放电绝缘特性等因素，在特定环境下，混合比为25~30%的CF3I/CO2混合气体较CF3I/N2混合气体更适合被考虑作为 SF6气体的绝缘替代物用于低中压电气设备中。
근년래，심조SF6체대기체적연구공작성위각국과학가화전력부문수요해결적박절문제。종국부방전절연특성각도출발，대CF3I/CO2여CF3I/N2량충혼합기체재불동기압、혼합비화간거하적국부방전기시전압(공빈부반주국방기시전압(negative partial discharge inception voltage，PDIV-)화정반주국방기시전압(positive partial discharge inception voltage，PDIV+))진행측량화비교，동시대량충혼합기체적PDIV-화 PDIV+치수혼합비변화적협동효응진행계산화대비분석。시험결과표명：상동시험조건하 CF3I/CO2혼합기체적 PDIV-치화 PDIV+치분별약위 CF3I/N2혼합기체적1.2배화1.0~1.4배，차CF3I/CO2혼합기체PDIV-화PDIV+치수혼합비변화적협동효응야균명현우우CF3I/N2혼합기체。고종합고필온실효응잠재치(global warming potential，GWP)、액화온도이급국부방전절연특성등인소，재특정배경하，혼합비위25~30%적CF3I/CO2혼합기체교CF3I/N2혼합기체경괄합피고필작위 SF6기체적절연체대물용우저중압전기설비중。
In recent years, the research on seeking the substitute of SF6 has become an imperative case that should be resolved for scientists and the electricity sectors. From the perspective of partial discharge insulation properties, this paper measured the PDIV-(negative partial discharge inception voltage) and PDIV+(positive partial discharge inception voltage) of CF3I/CO2 and CF3I/N2 gas mixtures in different gas pressures, mixing ratios and electrodes distances, and calculated their synergistic effect, meanwhile, the PDIV-, PDIV+ and synergistic effect of CF3I/CO2gas mixtures were compared with that of CF3I/N2 gas mixtures. The results show that the PDIV- and PDIV+ of CF3I/CO2gas mixtures were respectively 1.2 times and 1.0~1.4 times of CF3I/N2 gas mixtures under the same testing condition, and its synergistic effect was much better than CF3I/N2 gas mixtures. Therefore, compared with CF3I/N2gas mixtures, CF3I/CO2 gas mixtures with mixing ratio of 25~30% is more suitable for being used in low medium voltage gas insulated equipment as the insulation substituting of SF6 gas after the comprehensive consideration of liquefaction temperature, effects on environment and PD insulation characteristics.