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输变电工程造价的变化除了受到工程技术属性等内在的因素影响外,还受到众多种宏观经济因素的影响。为了研究宏观经济因素对输变电工程造价的影响机理,本文选取国内生产总值、PPI、CPI、贷款基准利率、城镇化率、人均可支配收入共六个代表性指标,研究设计了适用的敏感性分析方法以解决指标间的共线性问题,测算出各因素对造价的敏感系数,分析几项宏观经济变量对输变电工程造价的影响程度。
In addition to the engineering and technical properties and other inherent factors, changes in the cost of transmission and transformation projects are also affected by many macroeconomic factors. In order to study the impact mechanism of macroeconomic factors on the transmission and distribution costs, this paper selects six representative indexes of GDP, PPI, CPI, loan benchmark interest rate, urbanization rate and per capita disposable income, and studies and designs the applicable Sensitivity analysis method to solve the problem of collinearity between indicators to calculate the sensitivity of various factors on the cost of the coefficient analysis of several macroeconomic variables on the impact of transmission and distribution costs.