750+kV输电线路三相导线差异化设计研究.pdf

第 5 卷 第 5 期 智 能 电 网 Vol. 5 No. 5 2017 年 5 月 Smart Grid May 2017 DOI ：10.14171/j.2095-5944.sg.2017.05.014 文章编号：2095-5944 (2017) 05-0496-06 中图分类号：TM 72 文献标志码：A 750 kV 输电线路三相导线差异化设计研究 郭啸龙，吴庆华，刘文勋，李健，黄欲成 ( 中国电力工程顾问集团中南电力设计院有限公司，湖北省 武汉市 430071) Study on Differentiation Design of Three-phase Conductors Based on the 750 kV Transmission Line Project GUO Xiaolong, WU Qinghua, LIU Wenxun, LI Jian, HUANG Yucheng (Central Southern China Electric Power Design Institute of China Power Engineering Consulting Group, Wuhan 430071, Hubei Province, China) ABSTRACT: With the development of transmission line design, fine design and differentiation design become more and more important in engineering design. Based on the 750 kV transmission line project, the differentiation design simulation model of three-phase conductors is established based on Ansoft Maxwell in this paper. Electric field intensity on conductor surface is calculated respectively under the condition of changing the bundle spacing of mid-phase conductors, increasing the sectional area of mid-phase conductors, decreasing the sectional area of side-phase conductors and decreasing the number of split side-phase conductors. Electromagnetic environment and corona loss under different differentiation design are calculated based on the surface electric field intensity. Combining with the audible noise limit and radio interference limit, an environment-friendly, economic and reliable differentiation design of three-phase conductors is proposed through economic analysis. KEY WORDS: transmission line; three-phase conductors; differe