Study on Static Characteristics of Steam Turbine Digital Electro-hydraulic Control System
The research about digital electro-hydraulic control system of steam turbine(DEH)lays a foundation for the Flexible and economic operation of the unit.Taking a 600MW unit as an example,we analyses the static characteristics of DEH system's components and end up with a four quadrant diagram of DEH system.The study shows that:The first quadrant in the four quadrant diagram of DEH system is linear which is stacked by two nonlinear curves,the curves of transmission amplification mechanism and steam distribution mechanism.The different position of software convex cam and mechanical CAM device in control system is the main reason for the difference between four quadrant diagrams of two Control Systems above.
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