SF6/N2混合气体应用的综合评价模型

SF6/N2混合绝缘气体因其液化温度低、电气性能好、环保及价格低等优点,被认为是目前最具发展前景的SF6替代介质。但SF6/N2混合气体应用的综合评价问题尚缺乏研究。文中从电气性能、环境影响及成本三方面入手,构建了SF6/N2混合气体应用的综合评价模型。考虑混合气体各方面约束,提出采用电气性能目标最大化、环境影响目标及成本目标最小化的气体压力与SF6应用比例求解方法。结果表明:提出的SF6/N2混合气体应用的综合评价模型可实现电气性能、环境影响及成本多目标的综合考虑,尤其是环境温度对气体压力与SF6应用比例的影响,能够有效提升混合气体GIL工程应用的环保性、安全性和可靠性。

Comprehensive Evaluation Model of SF_6/N_2 Gas Mixture for Engineering Application

SF6/N2 gas mixtureis regarded as one of the most promising alternative insulating gases to SF6 because of its advantages such as low liquefaction temperature,nice electrical performance,good environmental protection and low price.This paper considers electrical performance,environmental impact and cost to build a multi-objective optimization comprehensive evaluation model of SF6/N2 gas mixturefor engineering application.Considering all aspects of the constraints of the gasmixture,a method for solving the gas pressure and SF6 application ratio toward maximizing electrical performance objective and minimizing environmental impact and cost objectivesis proposed.The results show that the proposed evaluation model of SF6/N2 gas mixture application can comprehensively consider electrical performance,environmental impact and cost,especially the influence of ambient temperature on the gas pressure and the SF6 application ratio.This study mayeffectively facilitate environmental protection,safety and reliability of the GIL in engineering application.