MaxDNA控制系统DPU频繁切换导致机组跳闸故障分析  

Fault Analysis of Unit Trip Caused by DPU Frequent Switching of MaxDNA System

作　　者：李学伟 姚常青 高嵩 

机构地区：[1]华电章丘发电有限公司,济南251200 [2]国网山东省电力公司电力科学研究院,济南250003

出　　处：《山东电力技术》2017年第3期70-73,共4页Shandong Electric Power

摘　　要：对一起335MW机组MaxDNA控制系统DPU(分布式处理单元)频繁切换导致机组跳闸的故障进行分析,通过进行切换试验、故障统计,对比DPU版本号和查阅MaxDNA系统硬件手册,发现该切换故障是由DPU本身硬件缺陷所导致的。制定解决方案对相应的DPU模块进行更换,有效地防止了该类型故障的发生。A unit trip fault caused by DPU frequent switching of MaxDNA system in a 350 MW power unit is analyzed.The switch fault is found to be caused by the DPU hardware bug through analyzing the switching test and fault statistics, contrasting the DPU version number and consulting the MaxDNA system hardware manual.The corresponding solution is formulated, and the corresponding DPU module is replaced, which effectively prevents the occurrence of the fault.

关 键 词：机组跳闸 分散控制系统 分布式处理单元 频繁切换 

分 类 号：TM621.6[电气工程—电力系统及自动化]