Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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1 000 kV GIL设备在特高压南阳站扩建工程中的应用

来源:电工电气发布时间:2022-06-21 11:21 浏览次数:313

1 000 kV GIL设备在特高压南阳站扩建工程中的应用

刘涛,裴东良,黄克选,余开伟,王卓,候交通
(国网河南省电力公司直流中心,河南 郑州 450051)
 
    摘 要:介绍了南阳站气体绝缘输电线路 (GIL) 工程总体布置方案,给出了工程关键组部件的标准化单元设计,研究了 3 套不同原理的故障定位系统优缺点。分析了 GIL 故障时为可靠闭锁对站重合闸,差动保护采用专用远传信号传输装置及通道的方案。基于就近的自平衡伸缩节或铰链伸缩节作为拆解故障单元的起始位置,阐述了不同类型母线气室故障检修方案及设备投运以来柔性设计部件存在的问题,为后续 1 000 kV GIL 工程的设备制造、工程设计、运维检修等提供借鉴。
    关键词:特高压;气体绝缘输电线路 (GIL) ;关键组部件;故障定位系统;差动保护;检修方案
    中图分类号:TM726     文献标识码:B     文章编号:1007-3175(2022)06-0036-08
 
Application of 1 000 kV GIL Equipment in the Extension Project of
UHV Nanyang Power Substation
 
LIU Tao, PEI Dong-liang, HUANG Ke-xuan, YU Kai-wei, WANG Zhuo, HOU Jiao-tong
(State Grid Henan Electric Power Company DC Center, Zhengzhou 450051, China)
 
    Abstract: This paper introduced a general layout scheme of the gas-insulated transmission line (GIL) project of Nanyang station. It proposed the standardized unit design of the vital components of the project and studied the advantages and disadvantages of three sets of fault location systems with different principles.In addition, this research analyzed the plan which could shut down the reclosing of the opposite substation when the GIL fails, and the differential protection device employed the scheme of a special remote signal transmission device and channel. This paper elaborated on different maintenance plans for the bus air chamber fault and the existing problems of the flexible design part based on the starting point of dismantling the faulty unit, which is the nearest automatic balancing expansion joint or expansion hinge. It provides a reference for the follow-up 1 000 kV GIL projects from various aspects, such as machinery manufacturing, engineering design, operation, and maintenance, etc.
    Key words: UHV; gas-insulated transmission line(GIL); key component; fault location system; differential protection; maintenance plan
 
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