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Fundamentals of Gas Insulated Substations

May 14, 2025 Online :: Central Time

“This webinar offered a very good introduction to GIS vs AIS substations for electric utility industry personnel”

Technical Consultant, TDS-Transmission & Distribution Services

“Excellent program and speakers”

Director, Tecnica Fase, S.A.

“Well done seminar.”

Engineer Senior, LCRA

This is a great course for those with no or limited Gas Insulated Substations (GIS) knowledge as it will provide attendees with an understanding of GIS, including design, construction, and operations.  Overall station design, fundamentals of SF6 gas, pros and cons of going with GIS, gas insulated stations vs. air insulated stations, and applications for GIS are some of the topics that will be discussed.  This course also dives into the intricacies involved in the construction, testing and commissioning of gas insulated substations.  Register today to enhance your understanding of GIS.

Learning Outcomes

  • Describe the components and equipment that make up a GIS
  • Discuss the differences between gas insulated stations and traditional air insulated stations
  • Review the fundamentals of the gas used and its alternatives
  • Expand on the engineering and design considerations for gas insulated station
  • Identify what is involved with testing, shipping, and installation of equipment
  • Review project cycle, cost considerations, and reliability of GIS
  • Describe GIS monitoring systems and applications for GIS

Register

Please Note: This event is being conducted entirely online. All attendees will connect and attend from their computer, one connection per purchase. For details please see our FAQ

If you are unable to attend at the scheduled date and time, we make recordings available to all attendees for 7 days after the event

REGISTER NOW FOR THIS EVENT:

Individual attendee(s)$ 995.00 each
Volume pricing also available

Individual attendee tickets can be mixed with ticket packs for complete flexibility

Pack of 5 attendees$ 4,230.00 (15% discount)
Pack of 10 attendees$ 7,960.00 (20% discount)
Pack of 20 attendees$ 14,925.00 (25% discount)

Your registration may be transferred to a member of your organization up to 24 hours in advance of the event. Cancellations must be received on or before April 11, 2025 in order to be refunded and will be subject to a US $195.00 processing fee per registrant. No refunds will be made after this date. Cancellations received after this date will create a credit of the tuition (less processing fee) good toward any other EUCI event. This credit will be good for six months from the cancellation date. In the event of non-attendance, all registration fees will be forfeited. In case of conference cancellation, EUCIs liability is limited to refund of the event registration fee only. For more information regarding administrative policies, such as complaints and refunds, please contact our offices at 303-770-8800

Agenda

Wednesday, May 14, 2025
Central Time

Online

Log In and Welcome

8:15 AM

Lunch Break

12:00 - 1:00 PM

Adjourn for the day

5:00 PM

8:15 AM - 8:30 AM

Log In and Welcome

12:00 - 1:00 PM

Lunch Break

8:30 AM - 5:00 PM

Course Timing

Definitions and Advantages/Disadvantages

  • Air Insulated Substation (AIS) vs. Gas Insulated Substation (GIS)
  • Clearance differences between GIS and AIS
  • Differences between indoor and outdoor GIS
  • GIS Pros and Cons

GIS Components

  • Circuit Breakers
  • Switches
  • Gas Insulated Bus
  • Ancillary Devices
  • Terminations/Interfaces
  • Transformers
  • Control Cabinets
  • Identifying the Components
    • Gas Zones
    • Cable Feeder Unit
  • Diagrams/Schematics

Fundamentals of SF6 and Gas Characteristics

  • SF6 Definition and Properties
  • Gas Density Gauge
  • SF6 Sealing Systems
  • Gas Zones and Buffer Zones
  • Safe Handling
  • Foreign Material Exclusion
  • Leak Detection Methods
  • SF6 Seal System

Gas Circuit Breaker

  • Arc Physics and Interruption Process
  • Breaker Specification Parameters
  • Breaker Control
  • Breaker Monitor
  • Breaker Components

Switches (Disconnect, Ground and Fast Acting Ground)

  • Types of Switches
  • Identifying the Components
  • Switch operators
  • Viewports

Current Transformers, Voltage Transformers and Surge Arrestors

  • Identifying the Components
  • Internal and External Current Transformers
  • Voltage Transformer
  • Surge Arrestors

Gas Zones

  • Identifying the Components
  • Barrier Insulators
  • Maintenance and Safety Considerations

Additional Components

  • Bellows
  • Particle Traps
  • Terminations
  • Insulators
  • View Ports
  • Platforms
  • Gas Insulated Bus
  • Rupture Disks
  • Buildings
  • Local Control Cabinets

Grounding and Bonding

  • Overview
  • Dead Tank Design
  • Leveling
  • Grounding Wire
  • Bonding Locations and Details

Control Cabinets

  • Types of Cabinets

Conduit Design

  • Types of Conduit
  • Installation Methods/Types
  • Wiring Design

Seismic Considerations

Factory Testing

Shipping

Installation

  • Steps of installation
  • Field Testing and Hi-pot Testing

GIS Project Cycle

  • Review of all milestones in project cycle

Gas Monitoring Systems

Instructor

Ms. Wagar attended the University of Pittsburgh where she earned a Bachelor of Science degree in Engineering and joined MEPPI in 2005 as a project manager of gas insulated substation and static var compensator projects. This work has included managing multiple contracts and subcontracts, planning/scheduling of engineering, procurement, and installation, and keeping communication flowing from customers through field personnel. Her current position is as the GIS Product Line Manager at the company.

Brenda Wagar

GIS Product Line Manager

Mitsubishi Electric Power Products, Inc.

Continuing Education Credits

IACET

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EUCI is accredited by the International Accreditors for Continuing Education and Training (IACET) and offers IACET CEUs for its learning events that comply with the ANSI/IACET Continuing Education and Training Standard. IACET is recognized internationally as a standard development organization and accrediting body that promotes quality of continuing education and training.

EUCI is authorized by IACET to offer 0.8 CEUs for this event

Verify our IACET accreditation

Who recognizes IACET Credits?

Requirements for Successful Completion of Program

Participants must log in and be in attendance for the entirety of the event to be eligible for continuing education credit.

Instructional Methods

Case studies, PowerPoint presentations, and group discussion will be used in this event.

CPE

Upon successful completion of this event, program participants interested in receiving CPE credits will receive a certificate of completion.

Course CPE Credits: 9.0
There is no prerequisite for this Course.
Program field of study: Specialized Knowledge
Program Level: Basic
Delivery Method: Group Internet Based
Advanced Preparation: None

CpeEUCI is registered with the National Association of State Boards of Accountancy (NASBA) as a sponsor of continuing professional education on the National Registry of CPE Sponsors. State boards of accountancy have final authority on the acceptance of individual courses for CPE credit. Complaints regarding registered sponsors may be submitted to the National Registry of CPE Sponsors through its web site: www.nasbaregistry.org

Who Should Attend

This course is designed for new or prospective utility professionals interested in gas insulated substations; however, other substation stakeholders may find a benefit from attending. This course will attempt to provide a robust education on GIS installations including relevant policies, practices and could be of interest to professionals in other areas of the utility such as communications, community engagement, and safety.

  • Substation and distribution engineers
  • Project managers involved in substation design, modification, and instillation
  • Utility asset managers
  • Construction firms involved in GIS projects
  • Transmission and distribution planners
  • Utility environmental managers
  • Transmission and distribution executives and managers