High Voltage Grounding Training

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

High Voltage Grounding and Bonding For Utility and Industrial Applications

Session 1: Understanding Grounding Basics and Safety Considerations

Objective: Introduce the key principles of high-voltage grounding, focusing on personnel safety and system integrity.

Definitions and Interpretations:

• Introduction to key terms in grounding and bonding for high-voltage systems.
• Overview of the latest grounding standards (e.g., IEEE Std 80, IEC 61936).

Need for Personal Protective Grounding:

• Criteria for determining the necessity of personal protective grounding in utility and industrial settings.
• Electric Shock Hazard and understanding the physiology of electric shock.

Safe Grounding Practices:

• Best practices for grounding high-voltage systems to protect against electric shock hazards and ensure compliance with safety standards.

Grounding Design Basics:

• Essential considerations for substation grounding and the impact of system voltage, soil resistivity, and ground fault currents on design.
• Soil Resistivity: Understanding its role in grounding system performance.

Ground Fault Current and Fault Clearing Time:

• Importance of correctly calculating ground fault current and designing systems that can handle fault clearing times to minimize risks.

Session 2: Advanced Grounding Options and Materials

Objective: Explore advanced grounding methods, materials, and techniques used in high-voltage applications.

Grounding Cable Assemblies:

• Overview of different grounding cable ampacities and how to select appropriate cable sizes based on fault currents.

Parallel Grounds and Reactance:

• How to utilize parallel grounds to distribute fault currents, and understanding the impact of grounding cable reactance.

Ground Potential Rise (GPR):

• Detailed analysis of Ground Potential Rise (GPR), including methods to mitigate risks in medium- and high-voltage systems.

Grounding Clamps and Insulated Power Cable:

• Selection of appropriate grounding clamps and understanding the importance of properly grounding insulated power cables.

Session 3: Ground Grid Design for Substations

Objective: Learn how to design effective grounding grids in substations, with an emphasis on safety and compliance with modern standards.

Determining Maximum Available Fault Current:

• Methods to calculate the maximum available fault current for substation systems.

Touch and Step Potential:

• Understanding touch and step potential hazards in substations and switchyards, and how to calculate and mitigate these risks.

Exposure Voltage Calculations:

• Exposure voltage calculations for plants and switchyards, based on IEEE Std 80 guidelines.

Two-Layer Soil Model and Horizontal Grid Design:

• Introduction to the two-layer soil model for designing effective ground grids, and its role in mitigating grounding hazards.
• Design considerations for horizontal grid designs, vertical grounding rods, and the use of conductors to ensure low impedance paths.

Temporary Grounding:

• Best practices for temporary grounding in substation environments to maintain safety during maintenance and construction activities.

Session 4: Switchyard and Substation Protective Grounding

Objective: Explore protective grounding techniques specifically for switchyards and substations.

Placement of Protective Grounds:

• Strategic placement of protective grounds to ensure maximum safety in high-voltage environments.

Grounding for Power Circuit Breakers, Transformers, and Bus Systems:

• Grounding considerations for circuit breakers, transformers, bus systems, and the importance of grounding critical components.

Grounding Insulated High Voltage Cables:

• Proper grounding techniques for insulated high-voltage cables, including cable terminations, splices, and midsections.

Capacitor Banks and Grounding Reactors:

• How to ground capacitor banks, phase reactors, and other high-voltage equipment to minimize electrical hazards and ensure operational reliability.

Session 5: Power Line Protective Grounding

Objective: Understand the principles of grounding for transmission and distribution lines, including grounding for metal and wood pole structures.

Grounding Metal Transmission Structures:

• Effective methods for grounding metal transmission structures and ensuring safety from fault currents.

Slip Joints, Steel Poles, and Overhead Ground Wires:

• Grounding considerations for steel pole structures, slip joints, and the role of overhead ground wires in providing protection from lightning and fault currents.

Wood Pole Transmission Structures:

• Grounding solutions for wood pole transmission lines, including the use of transmission line terminal ground switches.

Vehicle and Surface Equipment Grounding:

• How to properly ground surface equipment and vehicles in proximity to high-voltage transmission lines to ensure operator safety.

Session 6: Modern Considerations for High Voltage Grounding Systems

Objective: Examine modern technical considerations and standards in high-voltage protective grounding for substations and switchyards.

Substation Grounding Systems and IEEE Standards:

• An in-depth look at substation grounding systems and the latest recommendations from IEEE Std 80 for designing safe and effective grounding grids.

Typical Shock Situations and Dangerous Conditions:

• Overview of typical shock scenarios, how they occur, and steps to mitigate the risks.

Structure Touch Hazards and Electric Circuits:

• Addressing structure touch and contact hazards in substations and how to manage these risks through proper grounding.

De-Energized Equipment Hazards:

• Identifying sources of hazardous currents on de-energized equipment and understanding the grounding and jumpering requirements to maintain safety.

COURSE SCHEDULE:

Start: 10 a.m. Eastern Time
Finish: 4:30 p.m. Eastern Time