基于最小二乘法的输电线路建设成本估算研究

Research on Cost Estimation of Transmission-Line Construction Based on Least Square Method

采用最小二乘法对输电线路铺设成本进行了拟合估算。首先对输电线路的建设成本进行了分析,然后以实际工程历史数据为样本分别采用单变量法和双变量法对输电线路施工成本进行了拟合估算。结果表明,采用最小二乘法对线路铺设成本进行估算具备一定精度和可行性;双变量法较单变量法要全面合理、误差小。对输电线路的施工成本估算提供了参考意义。

This paper adopts the least square method to estimate the construction cost of the transmission-line. The detailed transmission-line construction cost is firstly analyzed. Then the construction cost is estimated respectively by single-variable method and double-variable method based on the historical cost data. The results show that it is somewhat accurate and practical to use the least square method for transmission-line cost estimation. Besides, the double-variable method is more sensible and has less error than the single-variable method. This work offers reference and thought for the cost estimation of the transmission-line construction and has positive meaning.