By - Jon Brown

Electric Distribution Grounding & Stray Voltage
September 18-19, 2019 | Denver, CO

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Overview

The electric distribution ground system is a complex network of various paths and accommodates the return current back to the substation. Ohm’s Law tells us that any current passing through an impedance creates a voltage. If we acknowledge that the ground path(s) is not a perfect a conductor, we know that stray voltage is inevitable.

This course provides insight into the workings of the grounding system from the end user back to the substation. Attendees learn the causes of high ground currents, how they can be minimized, and the techniques to mitigating stray voltage.

Learning Outcomes 

  • Discuss the basic electrical formulas associated with grounding and stray voltage
  • Review how transient events create hazards which may be dangerous to the public and utility personnel, as well as damage equipment
  • Review Section 9 of the National Electric Safety Code and learn acceptable grounding methods
  • Review the definitions of commonly used terms such as “effectively grounded” and “bonded”
  • Identify ground resistance measurement for both substations and the distribution system
  • Discuss the effects of electricity on biological objects (animals and human beings)
  • Discuss the definition of stray voltage
  • Assess stray voltage trouble shooting and mitigation techniques
  • Discuss various stray voltage scenarios

Credits

AP_Logo

EUCI has been accredited as an Authorized Provider by the International Association for Continuing Education and Training (IACET).  In obtaining this accreditation, EUCI has demonstrated that it  complies with the ANSI/IACET Standard which is recognized internationally as a standard of good practice. As a result of their Authorized Provider status, EUCI is authorized to offer IACET CEUs for its programs that qualify under the ANSI/IACET Standard.

EUCI is authorized by IACET to offer 1.1 CEUs for this event.

 

Requirements For Successful Completion Of Program 

Participants must sign in/out each day and be in attendance for the entirety of the course to be eligible for any continuing education credit. 

Instructional Methods 

PowerPoint presentations, case studies, and workshop exercises will be used in this program. 

Agenda

Wednesday, September 18, 2019 

8:00 – 8:30 a.m. :: Registration & Continental Breakfast

8:30 a.m. – 5:00 p.m. :: Course Timing 

12:00—1:00 p.m. :: Group Luncheon 


Engineering Formulas Relevant to Grounding

  • Ohm’s Law
  • Kirchhoff’s Voltage and Current Laws
  • Alternating Current
  • Impedance Model
  • Three Phase Power Systems

Transient Event on the Distribution System

  • Lightning Events
    • Surge Arrester Operation
  • Line to Ground Faults
    • Temporary Over Voltage (TOV)

Grounding Methods

  • NESC 2017 Section 9
    • Point of Connection
    • Method of Connection
    • Grounding Electrodes
    • Separation of Ground Conductors

Grounding Definitions

  • Effectively Grounded – Per NEC
  • Bonded – Per NEC
  • Step/Touch

Common Grounding Practices

  • Distribution System
    • Ground Resistance Measurements
      • Earth Ground Clamp Meters
    • Substation
      • Ground Grids
        • Soil Resistivity

Effects of Electricity on Biological Objects

  • Humans
  • Animals
  • Threshold of Perception
  • Threshold of Fatality

Thursday, September 19, 2019 

8:00—8:30 a.m. :: Continental Breakfast

8:30 a.m. – 12:00 p.m. :: Course Timing

Stray Voltage Definition

  • Per IEEE Working Group 1695
  • Stray Voltage vs. Contact Voltage
  • Influential Factors on Stray Voltage

Stray Voltage Mitigation Techniques

  • Phase Balancing
  • Power Capacitor Bank Issues
  • Deteriorated Neutrals
  • Neutral Isolators

Stray Voltage Scenarios

  • Swimming Pools
  • Shower and Faucets
  • Farms
  • Fences and Gates
  • Marina and Boat Docks

Instructors

Chris Sticht, Senior Consultant, Pike Engineering

Chris Sticht is a specialist in utility system planning, load analysis, planning software, underground, solar and Smart Grid. Chris has extensive background in power delivery planning, design, operations and protection. His background includes work on transmission systems, distribution systems, substations, and commercial building electrical systems. He has managed teams of engineers, designers and electricians. His experience includes consulting, contracting, work at two power flow software companies, and at several major utilities. He holds a MSEE from the University of Washington and a BSEE from Georgia Tech.


Jerry Josken, Senior Consultant, Pike Engineering

Jerry holds a BS in Electrical Engineering Technology from the Milwaukee School of Engineering and a MBA from North Central College. During his 30+ year career with Eaton’s Cooper Power Systems, Jerry served in a variety of engineering capacities. Past leadership positions include Chair of IEEE Rural Electric Power Conference (2012) and GLEMS Distribution Equipment /Controls (2013-2014). Presently, Jerry coordinates Pike Engineering Professional Development Program.

Location

EUCI Office Building Conference Center

4601 DTC Blvd, B-100

Denver CO, 80237

 

Nearby Hotels

Hyatt Regency Denver Tech Center
7800 E Tufts Ave
Denver, CO 80237
Phone: 303-779-1234
0.3 miles away

Hilton Garden Inn Denver Tech Center
7675 E Union Ave
Denver, CO 80237
Phone: 303-770-4200
0.6 miles away

Denver Marriott Tech Center
4900 S Syracuse St
Denver, CO 80237
Phone: 303-779-1100
0.7 miles away

Hyatt Place Denver Tech Center
8300 E. Crescent Parkway
Greenwood Village, CO 80111
Phone: 1-888-492-8847
0.9 miles away

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