Excitation Systems
The two day course ‘An Introduction to Excitation Control Systems’ is designed for Electrical Engineers, technicians and operational staff involved in power generation. The content is relevant for all types of generation involving synchronous machines; from traditional coal, oil, gas and hydro, to offshore and nuclear. The course will give delegates a firm understanding in the operation of excitation control systems along with an appreciation of the different types available and the numerous systems offered by the major manufacturers.
"1. Course Introduction 2. Synchronous generators and motors
• Synchronous machine theory
• The component parts of a synchronous machine
• Synchronous machine examples 3. Synchronous machine operating chart
• Different types of operating chart
• Under excitation limiter
• Over excitation limiter
• Stator current limiter"
4. Excitation systems
• Basic excitation theory
• Excitation system examples
5. Static excitation systems
• What is static excitation?
• Advantages and disadvantages
6. Brushless and rotating exciter systems
• What is brushless excitation?
• What is a rotating exciter?
• Advantages and disadvantages
• Case studies
7. Excitation System Components
• The exciter
• The static rectifier
• The excitation transformer
• The thyristor bridge output stage
• The IGBT output stage
• Component examples
8. Closed loop control theory
• Generator voltage control
• Field current control
• The transfer function diagram
• AVR response during transient system event
9. Parallel Operation of Generators
• Droop (compounding) AVR control
• Reactive load sharing
• Power factor control
• MVar control
• Power System Stabilisers
10. Commissioning, Operation and Maintenance
• Excitation system commissioning
• Transmission company compliance
• Troubleshooting
• Preventative maintenance
• Excitation Performance evaluation