Substation Maintenance Training Course Outline
DAY ONE
Session 1: Substation Overview
- Purpose of a Substation
- Components of a Power System
- Types of Substations
- Substation Switching Configurations
- Distribution Substation Configurations
- Substation Components
- Metering in Substations
- Relaying in Substations
- Substation SCADA
Session 2: Air and Disconnect Switches
- Maintenance and Testing
- Components
- Interlocking
- Motor-Operated Mechanism
- Vacuum Interrupters
- Maintenance Requirements
- Testing
Session 3: Circuit Breaker Maintenance and Testing
- Overall Maintenance
- Electrical Testing
- High-Potential Testing (Hi-Pot)
- Principles of Power Factor Testing
- Operation and Timing Tests
Session 4: Switchgear Maintenance and Testing
- Arrangement of Components
- Maintenance Intervals
- Maintaining the Insulation System
- Maintaining Auxiliary Components
- Torque Requirement for Switchgear Assemblies
- Electrical Testing of Switchgear
Session 5: Transformer DC and AC Testing
- General Safety Precautions
- DC Testing
- Insulation Resistance
- Winding Resistance Testing
- AC Testing
- Power Factor Testing Fundamentals
- Transformer Winding Testing
- Typical Tests Performed Using Power Factor/Dissipation Factor Test Sets
- Transformer Bushing Testing
- Liquid Insulating Power Testing
- Core Excitation Current Testing
DAY TWO
Session 6: Transformer Oil Testing
- Insulating Liquids
- Liquid Sampling
- Sampling for Power Factor Testing
- Sampling for Gas-In-Oil Analysis ASTM D-3613
- Silicone Insulating Fluid
- Dielectric Breakdown Voltage Test
- Color Testing (ASTM D-1500)
- Visual Examination (ASTM D-1524)
- Neutralization Number Test (ASTM D-1534)
- Interfacial Tension Test
- Moisture Content Test (ASTM D-1533)
- Evaluation of Test Data
- Other Insulating Liquids
Session 7: Transformer Gas Testing
- Gas Detection
- Oxygen Testing
- Combustible Gas Testing
- Gas Analysis Interpretation
Session 8: Current and Voltage Transformers
- Elementary Connections
- Instrument Transformers
- Types of Current Transformers
- Understanding CT Ratios
- Determining CT Polarity
- Measuring Current
- Shorting CT Secondary
- Current Circuits
- Operation of Current Transformers at Excessive Burden
- Open-Circuit Voltage
- Understanding CTs in a Schematic
- Voltage Transformers
- Coupling Capacitors Voltage
- Transformer Design Fundamentals
- Application: High-Voltage
- Transmission (115 kV – 500 kV)
- Understanding Voltage Transformers in a Schematic
Session 9: Ground Testing
- Types of Connections
- Applications
- Reasons for Special Treatment
- The Hazard
- Surface Resistivity
- Bulk Soil Resistivity Measurement
- Design of Grid
- Operating Handles
- Fences
- Principles Involved in Earth Resistance Testing
- Basic Test Methods for Earth Resistance
- Effects of Different Reference Probe Locations
- Tests at a Large Substation
- General Comments
- Other Tests
- Maintenance
Session 10: Battery Maintenance and Testing
- Battery In-Service Operation
- Temperature and Battery Life
- Battery Safety Factors
- Safety Hazards
- Safety Equipment
- Safety Precautions
- Battery Inspections
- Corrective Actions
- Equalizing Charge (Lead-Acid Only)
- Battery Measurement Techniques
Session 11: Overview of Protective Relays
- Classification of Relays
- Protective Zones
- Fundamentals of Electromechanical Design
- Relay Construction
- Time Characteristics
- Protective Relay Maintenance and Testing
- Mechanical and Visual Inspections
- Preventive Maintenance Testing
- Acceptance Testing
- Testing Techniques
- General Tests
- Relays in Substations
COURSE SCHEDULE:
Both days:
Start: 10 a.m. Eastern Time
Finish: 4:30 p.m. Eastern Time
