Course Details
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Course Description
This course is designed for those who have a need to understand most aspects of power plant GENERATORS.
The course addresses Theory of Generator Operation, Design Considerations, Construction, Relationships to the System, Excitation Systems, Auxiliaries, Normal/Abnormal Operations, Protective Relaying associated with the Generator, Outage Planning, Disassembly, Inspection/Repair, and Reassembly.
The Training Course Will Highlight ?
Training Objective
Target Audience
Electrical Engineers
Technicians
Training Methods
This interactive Training will be highly interactive, with opportunities to advance your opinions and ideas and will include;
Lectures
Workshop & Work Presentation
Case Studies and Practical Exercise
Videos and General Discussions
Daily Agenda
Day-1
Generator Theory
- Armature Reaction
- Resistive Loads
- Inductive Loads
- Capacitive Loads
- Power Transfer and Load Angle
- Reactive Power
- Net Air Gap
- Developed Torque
- Watt and VAR Control
- Generator Capability
- Stator Winding Heating
- Field Heating
- Core End Iron Heating
- Power System
- Power Transfer Between Generator Rotor and Stator
- Short Circuit Ratio
- Fundamentals of Generator Design
- Review of AC Power
- Armature Reaction
- Development of Torque
- Net Air Gap Magnetic Fields
- Effects of VARs on Current
- Effect of VARs on Voltage
- Active and Reactive Power Flow
- Generators Operating Under Load
- Changing MW load
- Changing MVAR load
Day-2
System Operations
- Structure of the Power System
- Interconnections
- Power Balance
- Operation of the System
- State of the Power System
Generator Construction
- Stator Frame
- Core, Windings
- End Shield
- Rotor Body
- Field Windings
- Retaining Rings
- Collector Rings
- Hydroelectric Differences
Day-3
Excitation Systems, Voltage & Frequency Control
- Speed Governor Response to Frequency Deviations
- Automatic Voltage Regulator Response to Voltage Deviations
- Manual Regulator
- URAL
- Impedance Compensator
- Volts/Hertz
- Maximum Excitation Limit
- Transfer & Tracking
- PSS
- De-Excitation
Steady State Operation
- Transient Conditions
- Earlier Excitation Systems
- Rotating AC Exciters
- Alterrex
- Brushless Excitation Systems
- Static Excitation Systems
Day-4
Generator Auxiliary Systems
- Purpose and Operations of the Generator Hydrogen Control System
- Generator Seal Oil System
- Stator Liquid Cooling System (as required)
Normal Operations
- Preparation for Start-Up
- Synchronizing
- Load Changes
- Use of Reactive Capability Curve
- Shut-down
Abnormal Operations:
- System Steady & Dynamic Conditions
- Frequency Deviations
- Voltage Deviations
- Instabilities
- Loss of Synchronism
- Stator Overcurrent
- Field Ground
- Stator Ground Fault
- Stator Phase-to-Phase Fault
- Over Voltage
- Over Volts-per-Hertz
- Field Overheating
- Loss of Excitation
- Bearing Vibration
- Synchronizing Errors
- Motoring
- Seal Oil System Pressure
Day-5
Outage Planning & Scheduling
- Why Maintenance
- Preparation
- Tooling
- Documentation
- Pre-Shutdown Maintenance
- Decision Making
Generator Electrical Tests
Stator
- Winding Resistance
- Insulation Resistance
- Dielectric Absorption
- Direct Current Leakage
- Dissipation Factor Test
- Radio Noise (Corona)
- High Potential Test
- Ring Test
Rotor
Resistance Test
PI
Impedance Testing
Flux Pattern Test
Air Gap Flux Probe Testing
Accreditation
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