大广坝水电厂机组动能参数在线监测

On-line Computer Monitoring of Unit Energy Parameters in Daguangba Hydropower Plant

大广坝水电厂机组动能参数在线监测系统由测量断面及引压系统、采样变送器和YLX－DZ型微机流量效率监测仪等3部分组成。流量监测是机组动能参数监测的核心，有关单位采用差压法进行过水流量在线监测，并研制了差压微机型流量装置。实践表明，在水轮机、水泵和大管道流量监测时差压法相对电磁法、超声波法费用较省，适用于各种机型和条件，安装调试和运行维护较简便；微机型监测装置具有自动化水平高、功能齐全、技术先进和性能价格比高等优点。

The on-line computer monitoring systern for unit energy paramters in Daguangba Hydropower Plant is composed of mea-suring section and intake system, sample transmitters and YLX-02 computer monutoring device of discharge-efficiency. Dischargemonitoring is the core of unit energy paramers monitoring which is carried out by pressure differential method.Practice reveal method. Practice reveals inmoritoring of discharge in turbine, pump and large conduit, pressure differential method is less in cost than electromagnetic methodand ultrasonic method and suitable for any type of unit and any condition. The computer monitoring device has the following advan-tages: high degree of automization, complete range of functions,advance in technology and high performance-cost ratio.