【作者】 王娜；

【导师】 习华勇；

【作者基本信息】 河北工程大学 ， 水利水电工程， 2010， 硕士

【摘要】 水电是我国重点发展的绿色能源,水电生产具有开停机方便、运行费用低,对环境污染小等优点,合理充分地利用水电能源对我国的经济发展起着巨大的推动作用,因此有效地对水力机组运行参数进行检测、分析、优化,对水轮机组高效稳定运行将起到重要作用。本文采用虚拟仪器技术,通过LabVIEW和MATLAB混合编程的方法,开发了一套水力机组运行实时监测系统,该系统不仅实现了水轮机运行参数的实时检测、分析、计算以及水力机组能量特性模型的建立,而且为建立水力机组优化运行系统打下基础。本文主体分为三部分,每部分内容如下:第一部分:采用虚拟仪器的概念,构建了实时监测系统的硬件结构并详细介绍了硬件的选型设计。该系统的硬件部分主要采用了美国NI公司的产品,包括信号调理设备以及数据采集卡,经过试验验证,该系统硬件结构不论采集精度、速度以及抗干扰能力都能够满足实时监测系统的要求。第二部分:利用图形化编程语言LabVIEW建立了岗南水电站1～3号机组的运行参数数据采集系统,实现了水轮机的工作水头、流量、出力等参数的实时在线监测、显示、处理以及存储,同时可根据水力机组实时监测的数据计算水轮机的运行效率,并实时显示,使工作人员随时了解水轮机的运行状况。第三部分:在水力机组运行参数数据采集系统的基础上,利用LabVIEW和MATLAB混合编程技术,构建了水轮机能量特性模型,开发了水力机组运行工况实时监测系统,该系统可以实现在水轮机的三维能量特性曲面图上实时显示水轮机的运行工况点的功能,以便运行人员直观地了解水轮机的运行状况,从而对整个机组进行合理调节,使机组运行于高效区。本系统的开发对于充分利用水资源,提高水电站的经济效益,实现水力机组的高效稳定运行及优化运行均具有一定的实际指导意义。更多还原

【Abstract】 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.更多还原