DCS系统接地方式对模拟量信号的影响分析  

Analysis of DCS Earthing Methods Influenceon Analog Signal

作　　者：方国春 张腾宇 唐堂 FANG Guochun;ZHANG Tengyu;TANG Tang(Datang Northeast Electric Power Experiment & Research Institute Co.,Ltd.,Changchun,Jilin 130102,China)

机构地区：[1]大唐东北电力试验研究院有限公司,吉林长春130102

出　　处：《东北电力技术》2021年第10期50-52,共3页Northeast Electric Power Technology

摘　　要：以某350 MW超临界机组汽动给水泵传动端径向轴承温度异常波动导致机组非正常停机为例,由DCS系统接地、温度升速率保护模块、模块精度测试等3方面进行多角度剖析,总结DCS系统接地方式对模拟量信号的影响,为同类型机组故障分析提供参考。Takinga 350 MW supercritical unit boiler feed pump turbine(BFPT)temperature fluctuations which causes unit unplanned outage as an example,it analyzes the unplanned outage from multi-dimensionsuch as distributed control system(DCS)earthingm,temperature rising rate protection function block,module precision test,etc.The influence of DCS grounding mode on analog signal is summarized to provide reference for fault analysis of similar units.

关 键 词：DCS系统接地 影响分析 速率保护 

分 类 号：TM862[电气工程—高电压与绝缘技术]