Course Description:

This course covers important topics related to introduction to exciter / automatic voltage regulator (AVR). This includes a functional description of the generator digital excitation system, control, maintenance, and protection as well as the routine maintenance requirements of the system. The course will include the troubleshooting for generator excitation system

Course Goal:

To enhance the delegate knowledge, skills, and abilities necessary to control voltage in the interconnected system

Course Objectives:

By the end of this course the participant will be able to:

1. Be familiar with excitation system and operation.
2. Be familiar with the types of generators:
3. Design of thyristor controllers:
4. Be familiar with starting methods.
5. Understand automatic voltage regulation and frequency control.
6. Be familiar with disadvantages of ungrounded systems and types of bonding and transformers.

Course Outline:

• Introduction to excitation system and operation:

• 1. General Background.
  2. Generator Exciters.
  3. Preventive, corrective, and predictive maintenance.
  4. Inventory and stock control, Proper Storage.
  5. Protective Relaying.
  6. Over-voltages and under-voltages protection.
  7. Standard Specifications.
  8. H.V Current Limiting Fuses.

• Generators:

• 1. A.C. Generators.
  2. Single phase generators.
  3. Three-phase Generators.
  4. Prime movers.
  5. Parallel AC Generator Operation.
  6. Generator Stability.
  7. Digital Exciters.

• Generator Exciters:

• 1. Dynamic Shunt Compensation.
  2. Overexcited synchronous machines.
  3. Underexcited synchronous machines.
  4. Synchronous Condenses.
  5. Static Generator Exciter.
  6. Maintenance and troubleshooting of digital exciter.
  7. Characteristics of generator exciter power (GEP) systems.
  8. Excitation system analysis.
  9. Installation and circuits layout of digital exciter.
  10. Understanding digital circuits.
  11. Input and output definitions and programming.

• Design of Thyristor Controllers:

• 1. Thyristors.
  2. Thermal Consideration.
  3. Description of thyristor controller.
  4. An example of thyristor controller.

• An Example Of A Modern Digital Static Generator Exciter:

• 1. Basic Arrangement.
  2. Description of main components.
  3. Performance testing.

• Starting Methods:

• 1. Starting generator exciter.
  2. Static Starter.
  3. Static Design Consideration.

• Automatic Voltage Regulation and Frequency Control.

• 1. Voltage Regulation Operation.
  2. Field Inspection.
  3. Regulator Replacement.
  4. Field Control Check.

• Earthing and bonding:

• 1. Disadvantages of ungrounded systems.
  2. Types of grounding.
  3. Earthing transformers, current transformers, and voltage transformers.

Who Can Benefit?

All engineers and technicians involved in the power sectors and power station operation, control, and maintenance, and also in the factories, and enterprises.