城市电网中500 kV电缆与GIL输电应用研究探讨  

Engineering Difference Between 500 kV Cable and GIL Transmission Lines in Urban Power Grids

作　　者：阴玮 韩赛赛 王卫华 李浩翥 YIN Wei;HAN Saisai;WANG Weihua;LI Haozhu(East China Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Shanghai 200001,China)

机构地区：[1]中国电力工程顾问集团华东电力设计院有限公司,上海200001

出　　处：《电工技术》2024年第18期176-179,183,共5页Electric Engineering

摘　　要：城市中心建设500 kV线路受规划和环境等影响,500 kV电缆在城市电网中已得到规模化应用,而在更大输送电流场景下,GIL输电方式也逐渐得到应用。2种输电方式各有优劣,其技术和投资差异甚至会在一定程度上影响系统规划对电网运行方式的考虑以及城市中心变电站的建设规模。为此,从输送容量、输电损耗、断面设置、通风系统、监控系统、本体投资等角度阐述了电缆与GIL输电方式的工程设计和投资差异,从而为深入城市中心的500 kV输电方式选择提供借鉴。500 kV transmission lines in urban centers cannot apply overhead mode owing to the impact on urban planning and environment.Hence 500 kV cables have found large-scale application in urban power grids,and GIL transmission mode has also been gradually applied when larger current carrying capacity is needed.The two transmission modes have their own advantages and disadvantages,and their differences in technology and investment will even affect the consideration of system planning,power grid operation mode and the scale of urban central substations.This paper focuses on the differences in engineering design and investment between cable and GIL transmission mode from the perspectives of transmission capacity,transmission loss,tunnel section design,ventilation system,monitoring system,and investment cost,so as to provide useful information for the selection of 500 kV transmission mode in urban centers.

关 键 词：500 kV电缆 GIL 工程设计 

分 类 号：TM761[电气工程—电力系统及自动化]