Research On Real-time Monitoring System Of Operation Of Hydro-generating Units Based On Virtual Instrument

Hydroelectricity is regarded as green energy of mainly development in our country. It has many characteristics such as quick start-up, low operation outlay and low pollution. How to make full use of hydro-electric power will enormously promotes the development of our country's economic. Therefore, to test, analyze and optimize the hydraulic parameters effectively will play an important role in the efficient and reliable operation of hydro-generating units.A real-time monitoring system of operation of hydro-generating units based on virtual instrument techniques was designed in this paper by using LabVIEW and MATLAB mix programming method.This system not only realizes the real-time detection, analysis and computation of the hydraulic parameters and the creation of energy characteristics model of hydro-generating units,but also it laies the foundation of the establishment of optimal operation system of hydro-generating units.The paper is made of three parts,which were showed below:The first part is to build the hardware structure of the real-time monitoring system adopting the idea of virtual instrument,and the design of hardware is discussed in detail.The main hardware of the system uses the products which are developed by National Instruments(NI),such as signal conditioning equipment and data acquisition card.After the test ,it can be proved that the hardware structure of this system,whether acquisition accuracy,speed or anti-jamming ability,is able to meet the requirements of the real-time monitoring system.The second part is to build the data acquisition system of NO.1 to NO.3 units processing parameter in Gangnan hydropower station by LabVIEW.With the system,the real-time monitor,display,data processing and storage of turbine operating parameters such as water level,water flux and the output are achieved.The hydraulic efficiency can be calculated and displayed real-timely according to the real-time monitoring data of hydro-generating units,so that the operators can hold the running status of turbine at any time.The third part is to build the energy characteristics model of turbine and develop the real-time monitoring system of operating conditions for hydro-generating units based on the data acquisition system of hydraulic parameters by using LabVIEW and MATLAB mix programming method. With the system,the operating condition points of turbine can be displayed in real-time on the surface graph of energy characteristics of turbine,so that the operators can hold the running status of turbine directly,and adjust the entire units reasonably.Development of system has practical guidance for the utilization of water resources, the enhancement of hydroelectric power station economic efficiency, the realization of efficient and stable operation and optimal operation of hydro-generating units.