利用供电线路临界长度确定施工用电供电方式

Making use of the critical length of feed line to determine the power supply system for construction

铁路建设临时电力线、集中发电费用 ,在大型临时设施费用中占较大比重。为提高工程经济专业设计文件质量 ,此文根据现行规定 ,从定量的角度出发 ,提出了通过计算供电线路临界长度进行经济比较 。

The cost of temporary power lines and central power generation of railway construction makes a comparatively great proportion of the cost of large scale temporary installations. In order to promote the design document quality of the engineering economy specialty, this article, based on the current provisions and from the angle of quantitative determination, presents that a comparison is made of the computed critical length of the electric line to determine the power supply system for construction.