The SF6 decomposed products are very alike,so the peaks of the SF6 decomposed products are overlapped.It make us hard to quantitatively calculate.This paper introduced a method to separate the overlapped chromatogram ...The SF6 decomposed products are very alike,so the peaks of the SF6 decomposed products are overlapped.It make us hard to quantitatively calculate.This paper introduced a method to separate the overlapped chromatogram peaks with iterative curve-fitting and Gauss function,and deduced the formula of the iterative curve-fitting;provided a method to calculate the initial value of the peaks intensity and width by iterative formula,and confirm the final peaks intensity and width to separate the overlapped signals.By the analysis of the real chromatogram data,it proved the validity of this method on the main components used in distinguishing the GIS internal defects.This method overcomes the influence of SF6 peak to the other thin concentration peaks,so it can be used in the study of the quantitative analysis of the decomposed products on different failures and different voltages.展开更多
为解决现有微通道散热技术存在的不足和电子散热需求多元化的发展趋势,提出一种蛛网型微通道热沉结构,并对其几何结构参数进行了多目标优化来提升蛛网形微通道热沉的综合性能。采用Box-Behnken设计方法,对热沉的槽宽、翅宽、槽深设计变...为解决现有微通道散热技术存在的不足和电子散热需求多元化的发展趋势,提出一种蛛网型微通道热沉结构,并对其几何结构参数进行了多目标优化来提升蛛网形微通道热沉的综合性能。采用Box-Behnken设计方法,对热沉的槽宽、翅宽、槽深设计变量进行响应曲面分析,拟合出蛛网形微通道的温度与压降函数;以拟合后的两函数为目标函数,用多目标粒子群寻优算法得到Pareto解集,并使用逼近理想解排序法(technique for order preference by similarity to an ideal solution,TOPSIS)从Pareto解集中进行选择。结果表明,Pareto解集为不同状况下的最优解,温度与压降函数的多元统计系数R^(2)分别为0.9996和0.9984,表明拟合函数的精确度高。优化后的结构与原设计相比,不仅平均温度降低了3 K,压降也降低了1514 Pa,综合性能显著提升,表明合理的通道结构设计可以进一步提高微通道热沉的综合性能。展开更多
基金Project Supported by National Natural Science Foundation of China （ 50777070）, Science and Technique Project of Chongqing （CSTC, 2007AC2041 ）.
文摘The SF6 decomposed products are very alike,so the peaks of the SF6 decomposed products are overlapped.It make us hard to quantitatively calculate.This paper introduced a method to separate the overlapped chromatogram peaks with iterative curve-fitting and Gauss function,and deduced the formula of the iterative curve-fitting;provided a method to calculate the initial value of the peaks intensity and width by iterative formula,and confirm the final peaks intensity and width to separate the overlapped signals.By the analysis of the real chromatogram data,it proved the validity of this method on the main components used in distinguishing the GIS internal defects.This method overcomes the influence of SF6 peak to the other thin concentration peaks,so it can be used in the study of the quantitative analysis of the decomposed products on different failures and different voltages.
文摘为解决现有微通道散热技术存在的不足和电子散热需求多元化的发展趋势,提出一种蛛网型微通道热沉结构,并对其几何结构参数进行了多目标优化来提升蛛网形微通道热沉的综合性能。采用Box-Behnken设计方法,对热沉的槽宽、翅宽、槽深设计变量进行响应曲面分析,拟合出蛛网形微通道的温度与压降函数;以拟合后的两函数为目标函数,用多目标粒子群寻优算法得到Pareto解集,并使用逼近理想解排序法(technique for order preference by similarity to an ideal solution,TOPSIS)从Pareto解集中进行选择。结果表明,Pareto解集为不同状况下的最优解,温度与压降函数的多元统计系数R^(2)分别为0.9996和0.9984,表明拟合函数的精确度高。优化后的结构与原设计相比,不仅平均温度降低了3 K,压降也降低了1514 Pa,综合性能显著提升,表明合理的通道结构设计可以进一步提高微通道热沉的综合性能。
