ICS29.240QGDW国家电网有限公司企业标准Q/GDW11881.2-201835kV220kV输变电工程初步设计与施工图设计阶段勘测报告内容深度规定第2部分:架空线路Code of content profundity of investigation report for preliminary design stage andworking drawing design stage for 35kV220kV transmission and distributionprojectsPart 2:Overhead power transmission line2019-10-23发布2019-10-23实施国家电网有限公司发布