Study on Valve Management of DEH for Steam Turbine

Changjie Yin, Jizhen Liu

The State Key Lab of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, China.

DOI: 10.4236/epe.2013.54B063                

Abstract

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.

Keywords

Valve Management; Steam Turbine; Digital Electro-Hydraulic Control System; Valve Flow Characteristic

Conflicts of Interest

The authors declare no conflicts of interest.

References

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