基于网络化水轮机组状态监测的节点设计

Network node design based on turbine condition monitoring

针对水轮机组运行时各设备参数的实际值、上/下位机的信号传输、设备是否发生故障等问题,将数据信号采集技术、A/D转换技术和收发器分别应用到信号的采集转换和传输中。开展了水轮机组状态监测原理和网络化水轮机组状态监测的节点设计分析,建立了水轮机组工作时过程层中设备数据的现场采集、监测层中信号的传输与站控层中系统PC机通讯之间的关系,提出了在现场节点设计的基础上数据的采集、信号的转换和传输等方法。在以ATmega8515单片机为核心的系统结构上,对各芯片构成的现场节点进行了评价,进行了对该设计的测试和性能分析试验。研究结果表明:采用网络化水轮机组状态监测的节点设计,实现了水轮机组的数据信号的采集、存储、转换和传输,从而完成了采样数据和状态特征的实时监测和远程监控。

Aiming at solving the problems of the actual values of parameters, the signal transmission of upper and lower machines or faults of each equipment appeared during the operation of hydraulic turbine group, the data signal acquisition technology, the A/D conversion technol- ogy and transceivers were applied to the technology of the signal conversion and transmission respectively. The condition monitoring principles and the node design of the condition monitoring of the networking hydraulic turbine group were investigated and the relationship between the site acquisition of the equipment data, the signal transmission and the systematic PC communications during the operation of the hydraulic turbine group were established. Accordingly, a method was presented to data acquisition, signal conversion and transmission. The site nodes constituted of each chip were evaluated on the systematic structure where the core was ATmega8515 single chip. The designed effect and performance were tested and analyzed. The results indicate that designed effect of the data acquisition, storage, conversion and transmission of the hydraulic turbine group have been achieved by using the designed nodes of condition monitoring of networking hydraulic turbine group, thus completing the real-time and remote monitoring of the sample data and status eharaeteristies.