天广直流阀冷却系统膨胀箱水位下降分析与处理  

Analysis and Treatment of Falling Water Level in Expansion Tank of Valve Cooling System in Tian-guang HVDC

作　　者：陈杰 Chen Jie(Tianshengqiao Bureau,CSG EHV Power Transmission Company,Guizhou Xingyi 562400,China)

机构地区：[1]中国南方电网有限责任公司超高压输电公司天生桥局,贵州兴义562400

出　　处：《广西电力》2018年第2期68-69,76,共3页Guangxi Electric Power

摘　　要：介绍±500 kV天广直流阀冷却系统膨胀箱水位控制原理,分析了膨胀箱水位下降原因,并结合几起案例说明根据膨胀箱水位下降情况可判断内冷水系统是否存在漏水缺陷,最后给出了相关的运维建议,保证了阀冷却系统的正常稳定运行。The principle of water level control of expansion tank of valve cooling system in±500 kV Tian-guang HVDC is introduced.,and reasons of falling water level in expansion tank are analyzed.It is explained by several cases that whether there is leakage defects in cooling system or not can be judged by the falling situation of water level in expansion tank.Finally,corresponding suggestions on operation and maintenance are proposed to ensure the normal stable operation of valve cooling system.

关 键 词：天广直流 阀冷却系统 内冷水系统 膨胀箱 水位下降 

分 类 号：TM721.1[电气工程—电力系统及自动化]