Valve management is one of the major functions of DEH for steam turbine. It has an important practical significance for the security and economy of the steam turbine. This paper starts from the valve configuration fig...Valve management is one of the major functions of DEH for steam turbine. It has an important practical significance for the security and economy of the steam turbine. This paper starts from the valve configuration figure of the domestic-type 300 MW steam turbine, and then makes a simple comparison between the two types of valve governing modes. In order to realize the valve control, the structure of control system has been established, in which the roles of the mathematical functions are discussed. On the basis of the experiment of valve flow characteristic, this article carries out a quantitative study on the functions of the valve management and the parameter tuning method. Through a serious corrections, the sequence valve flow characteristic curve is obtained, which can provide significant guidance on the research of valve management of the similar steam turbines.展开更多
为了研究大型火电机组调节系统参数实测之迟缓率测定,通过四象限静态特性图和象限映射变换方法对数字电液调节系统(digital electro-hydraulic control system,DEH)的迟缓构成进行了分析和研究,提出了一种通过测取机组转速微变极值来间...为了研究大型火电机组调节系统参数实测之迟缓率测定,通过四象限静态特性图和象限映射变换方法对数字电液调节系统(digital electro-hydraulic control system,DEH)的迟缓构成进行了分析和研究,提出了一种通过测取机组转速微变极值来间接获取DEH迟缓率的静态试验方法。应用该试验方法,成功对华能海门电厂1 036MW汽轮发电机组DEH的迟缓率进行了静态测定。展开更多
文摘Valve management is one of the major functions of DEH for steam turbine. It has an important practical significance for the security and economy of the steam turbine. This paper starts from the valve configuration figure of the domestic-type 300 MW steam turbine, and then makes a simple comparison between the two types of valve governing modes. In order to realize the valve control, the structure of control system has been established, in which the roles of the mathematical functions are discussed. On the basis of the experiment of valve flow characteristic, this article carries out a quantitative study on the functions of the valve management and the parameter tuning method. Through a serious corrections, the sequence valve flow characteristic curve is obtained, which can provide significant guidance on the research of valve management of the similar steam turbines.
文摘为了研究大型火电机组调节系统参数实测之迟缓率测定,通过四象限静态特性图和象限映射变换方法对数字电液调节系统(digital electro-hydraulic control system,DEH)的迟缓构成进行了分析和研究,提出了一种通过测取机组转速微变极值来间接获取DEH迟缓率的静态试验方法。应用该试验方法,成功对华能海门电厂1 036MW汽轮发电机组DEH的迟缓率进行了静态测定。
