基于正交试验的输电导线截面选择优化研究

The Optimization of Transmission Cable Type Study Based on Orthogonal Test

根据输电线路的投资费用,建立输电导线优化选型的数学模型,运用正交试验法研究了线路投资回收年限、导线电阻系数、电能的电价以及导线单位长度单位面的费用对最优截面的影响。试验结果的极差分析与方差分析等结果表明导线电阻系数对导线截面优化影响最大,电能的电价次之,投资回收年限再次之,导线的费用的影响程度最小,最优试验方案为A3B1C1D2。分析可知,导线的电阻系数越小,所优化的导线截面积越小,电能价格越便宜,导线截面越小,越经济。

According to investment costs of the transmission line,establishing the mathematical model of transmission wire optimize the selection and the research is carried out with the method of orthogonal test to study the effects of some main parameters such as investment recovery period,resistance coefficient,electricity price and unit cost on the optimal cross-sectional area.The results form range analysis and variance analysis show that the influence of resistance coefficient is the greatest among the four parameters on the optimal cross-sectional area;the second is electricity price;the third is investment recovery period and the least is unit cost.Therefore,the optimal scheme is A3B1C1D2.It is clear that the smaller resistance coefficient,the smaller cross-sectional area and the cheaper electricity price,the less optimal cross-sectional area and more economical.