户外环境对SF_(6)压力表的影响因素分析  

Analysis of Influence Factors of Outdoor Environment on SF_(6)Pressure Gauge

作　　者：刘杰 黄秀娟 LIU Jie;HUANG Xiujuan(EHV Branch Company of State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 311121,China)

机构地区：[1]国网浙江省电力有限公司超高压分公司,浙江杭州311121

出　　处：《电工技术》2023年第1期152-154,158,共4页Electric Engineering

摘　　要：对变电站中GIS压力监测进行了分析,指出目前变电站内存在的两种SF 6压力表安装形式的优缺点。分别从温度变化和环境湿度两个方面分析了户外运行环境对SF_(6)压力表的影响,给出了应对措施。对于前者,如果发现压力降低的情况,就应第一时间进行气室泄漏检查,排除泄漏的情况下再进行压力表及其回路等方面的检查分析。对于后者,给出了在压力表接线盒封堵和直流负极端增加压控导通元件来避免压力表接线柱氧化发生的方案。The GIS pressure monitoring in substation is analyzed,and the advantages and disadvantages of two SF 6 pressure gauge installations in substation are pointed out.The influence of outdoor operating environment on SF_(6)pressure gauge is analyzed from two aspects:temperature change and environmental humidity,and countermeasures are given.For the former,if the pressure is found to be reduced,the air chamber leakage inspection should be carried out at the first time,and then the pressure gauge and its circuit should be checked and analyzed under the condition of eliminating leakage.For the latter,a scheme is given to add voltage-controlled conduction components in the pressure gauge junction box plugging and DC negative terminal to avoid the oxidation of the pressure gauge terminal post.

关 键 词：GIS设备 SF 6压力表 压力补偿 绝缘降低 

分 类 号：TM595[电气工程—电器]