摘要
为满足区域电力负荷增长和电网运行可靠性要求,需对在运变电站进行超规模改扩建。在场地和空间受限情况下,选用GIL设备可以实现在运变电站的这种扩建需求。本文从额定参数选择、布置设计、伸缩节配置、接地设计、在线监测等方面阐述了GIL电气设计的关键技术,针对改扩建工程中的场地空间限制和基础不均匀沉降问题,提出了"抬梁法"和"锚杆静压桩"方案,为今后的工程应用提供了借鉴。
In order to meet the requirements of regional power load growth and power grid operation reliability,it is necessary to carry out large-scale reconstruction and expansion of substations.Gas Insulated Transmission Line(hereinafter referred to as GIL)equipment can be applied to satisfy the expansion demand of those substations when the site and space are limited.In this paper,the key points of GIL electrical design are described from the aspects of ratings selection,layout design,expansion joint configuration,grounding design,online monitoring,etc.The“Beam Supporting Method”and“Anchor Pile”are recommended to effectively solve the confined space under certain conditions and the uneven settlement of foundation in soft ground,which provides a reference for the future engineering application.
作者
胡文华
徐昌云
郑孝清
王伟颖
吕青
HU Wen-hua;XU Chang-yun;ZHENG Xiao-qing;WANG Wei-ying;LYU Qing(East China Electric Power Design Institute Co.,Ltd.of CPECC Shanghai 200063,China)
出处
《电力勘测设计》
2020年第8期11-19,共9页
Electric Power Survey & Design
关键词
变电站改扩建
GIL
不均匀沉降
抬梁法
锚杆静压桩
reconstruction and extension of substation
GIL
uneven settlement
beam supporting method
anchor pile
