Earn Continuing Education Unit (CEU) Credits

Successful completion of this course qualifies delegates to receive a certificate of course completion with indicated CEUs. CEUs are granted by the Engineering Institute of Canada. One CEU is equivalent to 10 professional development hours of instruction.
The following course earns 1.4 CEUs.

BONUS FEATURES

• FREE 108-Page Power Quality and Grounding Vol. 7 Handbook (Value $35)
• A FREE subscription to Electricity Today Magazine (Value $40),
• An Electricity Forum Coupon (Value $100) to be used against any future 2007 Electricity Forum event (restrictions apply)
• Forum Presentations in Paper Format
• CD Rom containing Presentations

COURSE BENEFITS

Who Should Attend

• Utility and Industrial Electrical Engineers and Engineering Technicians
• Project Engineers
• Design Engineers
• Field Technicians
• Electrical Technicians
• Electricians
• Plant Operators
• Plant Engineers
• Electrical Supervisors

After Attending, You Will Learn:

• The basic principles of grounding of electrical systems
• Protective or Safety grounding system
• Safe and unsafe working conditions
• Design considerations of a grounding grid for medium and high voltage
• Measuring of ground resistance, resistivity in substations
• Protection of substations from lightning energy

A properly designed and installed grounding system ensures reliable performance of electrical substations. Fast clearing of faults, made possible by good grounding, improves the overall safety and reliability of an electrical system.

This one-day course will provide the basic principles of grounding a power supply network to ensure safety of personnel and equipment. Understanding these principles will provide the correct tools to design a grounding system applicable to utility networks and industrial plant distribution. This course covers the basic procedures in working safely on medium and high voltage systems.

OVERVIEW

• Basics Of High Voltage Grounding
• Electrical Bonding of High Voltage Systems
• Proper Sizing of conductors
• Grounding of Substations
• High Voltage Surge protection
• Electrical Grounding for lightning protection

SUBSTATION GROUNDING DESIGN

Session 1: Definitions and Interpretations

• Determination of Need of Personal Protective Grounding
• Basic Criteria for Safe Grounding Practices
• Electric Shock Hazard
• Grounding practices
• Basic design options
• Soil resistivity
• Ground fault currents
• Fault clearing time

Session 2: Grounding Options

• Ground Cable Assemblies
• Grounding Cable Ampacities
• Grounding Cable Reactance
• Parallel Grounds
• Grounding Clamps
• Grounding Insulated Power Cable
• Ground potential rise (GPR) in medium and high voltage systems

Session 3: Ground grid design for substations

• Determination of Maximum Available Fault Current
• Exposure Voltage Calculations for Plants & Switchyards
• Touch and step potential
• Transferred potential
• Elimination of step and touch potential
• Selection of the right connector
• Horizontal Grid Design IEEE STD 80-2000
• Introduction to 2-Layer soil Model
• Vertical Rods Connected by a Grid
• Temporary grounding

Session 4: Switchyard and Substation Protective Grounding

• General Considerations for placement of Protective Grounds
• Power Circuit Breakers and Transformers
• Disconnect Switches and Bus
• Insulated High Voltage Cable
• Cable Terminations
• Midsections and Splices
• Grounding Transformers and Phase Reactors
• Capacitor Banks

Session 5: Power Line Protective Grounding

• Grounding of Metal Transmission Structures
• Slip Joints
• Steel Pole Structures
• Overhead Ground Wires
• Structure Footing Ground
• Grounding on Wood Pole Transmission Structures
• Transmission Line Terminal Ground Switches
• Grounding on Distribution Lines
• Surface Equipment and Vehicle Grounding

Session 6: Technical Considerations in Protective Grounding in Substations and Switchyards

• Substation Grounding System
• Typical Shock Situations- Conditions of Danger
• Structure touch
• Electric Circuit for Witch Operator Sources of Hazardous Current on De-energized Equipment
• Grounding and Jumpering Requirements
• IEE Std 80-2000

International and Local Regulations

• CSA
• IEEE 80-2000, IEEE Guide for Safety in AC Substation Grounding, 2000
• ASTM F 855-97 Standard Specifications for Temporary Protective Grounds
• IEEE 1246-2002, IEEE Guide for Temporary Protective Grounding Systems Used in Substations
• IEEE 1048-2003, IEEE Guide for Protective Grounding of Power Lines, 2003

TUTORIAL TIMETABLE:

Start: 8:30 a.m.
Coffee Break: 10:00 a.m.
Lunch: 12:00 noon
Restart: 1:15 p.m.
Finish: 4:30 p.m.