IEEE
February 20th, 2016

Upcoming Events

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Safety Assessment of a Substation Ground Grid with a Software Package

This presentation covers the case study of a substation ground grid safety performance. The presenter brings a case where the soil, site environment, and power system properties present challenges that can be solved with the use of a software package. The program tool used in the example was SES Tech – CDEGS. The software package uses a finite element analysis that helps in determining soil model layers, grid spacing, electrode depth, surface rock, etc.

 

The presenter will walk the audience through soil modelling, fault current analysis for grounding, ground grid modelling, and calculation of grid resistance, ground potential rise, and touch & step voltages. Eduardo will explain how to interpret results and plots. He will also give recommendations for design and study methodology.

 

If time allows Eduardo has volunteered for a question and answer short session covering the following topics:

  • Soil resistivity testing
  • Seasonal modelling of soils
  • Implementation of ground wells and other mitigation methods
  • Split factor modelling

 

Presenter Profile: Eduardo Ramirez-Bettoni, P.E.

Eduardo works as a Principal Engineer at the Transmission & Substations Standards (TSS) department at Xcel Energy. He received a B.S. in Electrical Engineering from the University of Costa Rica (UCR). Eduardo is a licensed PE with 14 years of international experience in design, construction, and O&M of electrical substations up to 500 kV. Eduardo’s expertise is in substation protection & control, physical design, and grounding.

 

When:

Thursday, January 26, 2017

11:30AM-1:30PM

 

Where:

NV5-Sebesta

1450 Energy Park Drive

Suite 300 East

St. Paul, MN 55108

 

Register here: https://events.vtools.ieee.org/meeting_registration/register/42674  (limit 35)

 

Lunch will be provided!

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