Utility Plant Accounting and Work Orders
September 24, 2024 | Online
If you are unable to attend at the scheduled date and time, we make recordings available to all registrants for seven days after the event
“Matt was awesome. Very knowledgeable and willing to show many different ways to cover all possible testing scenarios for finding stray voltage. Great job.” – QUES
“Course was full of useful information to help potentially find stray voltage and mitigate any problems resulting from it.” – QUES
“Matt was exceptional – knowledgeable, practical and very quick to address questions asked.” – Eversource Energy
The Transmission & Distribution Grounding and Stray Voltage program aims to provide electric engineering professionals and technicians with a contemporary overview of grounding practices and stray voltage issues, helping them leave the course with a full understanding of this complex network.
Register today and leave this course with a comprehensive understanding of:
- Necessary grounding methods and practices
- Stray voltage mitigation techniques
- With special attention to:
- Three-phase power systems
- Step/touch potentials
- Ground resistance measurements
- Ground grid
- Test equipment
- Neutral isolators, and more
Learning Outcomes
- Review engineering formulas in order to start a foundational knowledge of grounding (i.e., Ohm’s Law, Kirchhoff’s Voltage & Current Laws, etc.)
- Discuss grounding methods and definitions, including step/touch potentials, connection points, electrodes, etc.
- Evaluate grounding practices in the distribution and transmission system (measurements, substation, ground grids, ground design)
- Examine the effects of electricity on humans and animals
- Review stray voltage definitions and how stray voltage it’s measured
- Analyze stray voltage mitigation techniques, including phase balancing, deteriorated neutrals, and neutral isolators
- Assess stray voltage scenarios such as swimming pools, farms, fences and more
Agenda
TUESDAY, SEPTEMBER 24, 2024
9:00 a.m. – 4:30 p.m. Central Time
Engineering Formulas Relevant to Grounding
- Ohm’s Law
- Kirchhoff’s Voltage and Current Laws
- Alternating Current
- Impedance Model
- Three-Phase Power Systems
Grounding Methods
- NESC 2017 Section 9
- Connection Points
- Method of Connection
- Grounding Electrodes
- Separation of Ground Conductors
- NEC 2020 Article 250
- Grounding Electrode System
- Separately Derived Systems
- Intersystem Bonding
Grounding Definitions
- Effectively Grounded – Per NEC
- Step/Touch Potentials – IEEE Std. 80
- Bonded
Grounding Practices
- Distribution System
- Ground Resistance Measurements
- Earth Ground Clamp Meters
- Substation
- Ground Grids
- Transmission System
- Tower Ground Design
- Steel Pole Grounding
Effects of Electricity on Humans & Animals
- Humans
- Animals
- Threshold of Fatality and Perception
WEDNESDAY, SEPTEMBER 25, 2024
9:00 a.m. – 4:30 p.m. Central Time
Stray Voltage Definition
- Per IEEE Working Group 1695
- Stray Voltage vs. Contact Voltage
Stray Voltage Measurement
- Test Equipment
- Measurement Scenarios
- Harmonic Analysis
- Data Collection
Stray Voltage Mitigation Techniques
- Phase Balancing
- Deteriorated Neutrals
- Neutral Isolators
Stray Voltage Scenarios
- Swimming Pools
- Shower and Faucets
- Farms
- Fences and Gates
- Street Furniture
Stray and Contact Voltage Case Studies
- Transmission Line Influence on Railroads
- Substation Grounding Causing Shower Shocks
- Transmission Line Influence on Pool Grounding
- Boat Dock Shock Caused by Distribution Line Routing
Instructor
Matthew Norwalk, Sr. Advisor – Distribution and Power Quality, Southern California Edison
Matt Norwalk has been involved in the electric industry for over 26 years and has experience in the design, construction and operation of utility and customer power systems. For the past 19 years he has worked for Southern California Edison’s Power Quality Department where he’s been involved with ensuring the safe and reliable power delivery to SCE’s customers and is currently a Senior Advisor. He is the current Chair of the Institute of Electrical and Electronics Engineers (IEEE) Stray and Contact Voltage Working Group and is leading the revision of IEEE Standard 1695, Guide to Understanding, Diagnosing, and Mitigating Stray and Contact Voltage.