In this paper, instead of with the more expensive Fourier Transform Infrared Spectrometer(FTIR) a new technique of Temperature Programmed Transient Response(TP-TR) has been used with gas chromatography. Therefore, the...In this paper, instead of with the more expensive Fourier Transform Infrared Spectrometer(FTIR) a new technique of Temperature Programmed Transient Response(TP-TR) has been used with gas chromatography. Therefore, the TP-TR will be applied more widespreadly than ever before. With the technique of TP-TR and electric conductivity, the study is on the reaction mechanism and the adsorption behavior of the reactants and products to the present catalyst Mo-V-Nb/Al_2O_3 in the reaction from ethane through oxydehydrogenation to ethylene as the product. By Range-Kutta-Gill and Margarat methods, the kinetic parameters of the reaction elementary steps (i.e. rate constants, active energies and frequency factors) have been evaluated. The mathematical treatment coincides with the experimental results.展开更多
针对3/2接线方式变电站开关设备回路电阻的在线计算问题,提出一种基于电流和有功功率测量的在线评估方法。利用基尔霍夫定律和焦耳定律建立开关设备回路电阻的数学模型,将计算开关设备回路电阻的问题转化为线性最优规划问题。在求解最...针对3/2接线方式变电站开关设备回路电阻的在线计算问题,提出一种基于电流和有功功率测量的在线评估方法。利用基尔霍夫定律和焦耳定律建立开关设备回路电阻的数学模型,将计算开关设备回路电阻的问题转化为线性最优规划问题。在求解最优规划问题的过程中,采用遗传算法可大大减少求解规划问题的难度,避免最终结果陷入局部最优解。以采用3/2接线方式的某500 k V变电站的实测电流和有功功率数据进行仿真计算,验证该方法的有效性。展开更多
文摘In this paper, instead of with the more expensive Fourier Transform Infrared Spectrometer(FTIR) a new technique of Temperature Programmed Transient Response(TP-TR) has been used with gas chromatography. Therefore, the TP-TR will be applied more widespreadly than ever before. With the technique of TP-TR and electric conductivity, the study is on the reaction mechanism and the adsorption behavior of the reactants and products to the present catalyst Mo-V-Nb/Al_2O_3 in the reaction from ethane through oxydehydrogenation to ethylene as the product. By Range-Kutta-Gill and Margarat methods, the kinetic parameters of the reaction elementary steps (i.e. rate constants, active energies and frequency factors) have been evaluated. The mathematical treatment coincides with the experimental results.
文摘针对3/2接线方式变电站开关设备回路电阻的在线计算问题,提出一种基于电流和有功功率测量的在线评估方法。利用基尔霍夫定律和焦耳定律建立开关设备回路电阻的数学模型,将计算开关设备回路电阻的问题转化为线性最优规划问题。在求解最优规划问题的过程中,采用遗传算法可大大减少求解规划问题的难度,避免最终结果陷入局部最优解。以采用3/2接线方式的某500 k V变电站的实测电流和有功功率数据进行仿真计算,验证该方法的有效性。
