TG422 - Concepts of Steam Turbine Controls

2.5 days - 1.6 Continuing Education Units Awarded

"Concepts of Steam Turbine Controls" is a Seminar designed to provide a working knowledge of steam turbines and their associated control and protection equipment. Although not the focus of the Seminar, attendees will gain a solid understanding of how power is generated.  Turbine controls system design concepts are the primary focus.  Included in these discussions are Speed Control, Load Control, Pressure Control and Protection Against Overspeed.  All discussions are conceptual.  It is our intention that the participant understand these topics well enough (conceptually) that they can be readily applied to any steam turbine operating unit.

OBJECTIVES
Upon successful completion of this Seminar the participant will be able to:

1. Describe fundamental design of steam turbines and the major components.
2. List those major components that have a direct bearing on the operations and / or reliability of steam turbine controls.
3. Describe how steam turbine governors function off-line.
4. Describe how steam turbine governors function on-line and being responsive to grid conditions.
5. Describe how steam turbine governors function on-line when programmed to not be responsive to grid conditions.
6. Describe steam turbine governor response to overspeed conditions.
7. Describe how an emergency governor should respond to overspeed conditions.
8. Describe how to determine proportionality between inlet valve position and steam flow.
9. Describe operation of typical servomechanisms such as the Abex and Moog servo-valves.
10. Describe typical operational exercises.
11. Describe typical routine preventive maintenance activities.

OUTLINE

1. Steam Turbine Fundamentals: Turbine Stages, Reaction versus Impulse Blading, Shells/Casings, Rotors, Seals, and Valving.
2. Turbine Theory & Performance Curves: Fundamental Theory of Operation, Efficiency Issues, Valve Positioning for Efficiency and Reliability
3. Governor Operation: Purpose, Speed Control, Load Control, Pressure Control, Valving, Start-Up, System Frequency Deviations, and Shutdown
4. Steam Turbine Operations: Thermal Stress, Start Up Curves, Auxiliary Valving Systems
5. Steam Turbine Protection: Stability Issues, Loss of Synchronism, Synchronizing Errors, Motoring, Overspeed, Thrust Bearing Failure

SATISFIED CLIENTS of HPC Turbine Controls Seminars: Alliant Energy, Amergen, ATCO Electric, Boston Edison, Commonwealth Edison, Dayton Power & Light, Detroit Edison, Duke Energy, Entergy Operations, First Energy Corporation, MidAmerican Energy, New England Power, New York Power Authority, Niagara Mohawk Power Corporation, North American Energy Services, Northern States Power, Oklahoma Gas & Electric, Ontario Power Generation, Potomac Electric Power, SaskPower, South Carolina Electric & Gas, Southern Nuclear Operations, Tennessee Valley Authority, Texas Municipal Power Agency, Vermont Yankee