基于PROFIBUS的发电机组监测系统的实现

IMPLEMENTATION OF MONITORING SYSTEM OF THERMAL GENERATOR BASED ON PROFIBUSIN POWER PLANT

针对电厂发电机组的事件顺序 ( SOE)记录和快速测试 ,论述了一种基于 PROFIBUS现场总线的发电机组监测系统。着重分析了高速的 PROFIBUS— DP通信网的通信机制和该监测软件的实时数据采集、数据库策略。通过监测主机的高速采样、数据库的优化 ,完成了快速数据采集 (最高分辨率为 1 ms)软件的设计。同时该现场总线控制系统 ( FCS)可实现远程分散数据的集中监视、故障诊断等功能。该系统已在浙江北仑电厂 2号机组投入运行。

Aim ing at sequence of event SOE and fast testing of therm al generator,a m onitoring system of therm al generator based on PROFIBUS in power plant is discussed. The communication principle of high- speed PROFIBUS- DP com munication net,the software of real time data acquisition and database schem e are emphasized.By high- speed sam pling of hostcomputer and optimization of database,software design of fast data acquisition 1ms resolution for SOE analysis and2 m s sample- rate for data test has been completed. This fieldbus control system also has other advantages such as centralized monitor of distributed data and fault diagnosis.The system has been put into operation in No.2 therm al generator of Zhejiang Beilun Thermoelectric Power Plant.