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UMKC Senior SUBSTATION DESIGN TEAM
Website:
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UMKC Senior Substation Design Team
Members: Zane Potts - Power Transformer Payam Ansari - Circuit Breakers Brandon Howland - Protective Relaying Robert Biggs - Lightning Mitigation Ehab Abdelhaq - Grounding Gary Kertz - Substation Layout Layout Website:
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What is a substation used for ?
One of the main goals that every electrical utility company has is transportation of electrical energy from the generating station to the customer, while meeting the following main criteria: • High reliability of power supply • Low energy cost • High quality of energy (required voltage level, frequency etc.)
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Power Transformer
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Forms Core Shell
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How It Interfaces
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Disconnect Switches Bushings Current Transformer Circuit Breaker
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Disconnect Switch and Circuit Breaker
Purpose of Circuit Breakers and Disconnect Switches Size of Breakers Fault Current Continuous Current X/R Ratio Power Flow
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Our Team Design of Breakers
3-138KV Breakers Ring Layout 1-69KV Breaker
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Protective Relaying
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Protective Relaying
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Zones of Protection
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Lightning & Switching Surge Mitigation
Line Phasing
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Coordination Lightning/Switching Surge Line Phasing Ehab – Grounding
Gary – Substation & Equipment Layout Line Phasing
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Why grounding is important
Why grounding is important ? 1-Path for short circuit to remote earth 2-Provide safe step and touch potentials Grounding system design consists of all the following : Grounding rods Grounding grid Copper cables Equipment connectors
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Main safety issues in grounding to be concerned about in designing the grounding system :
Step Voltage : Voltage difference in ground between your feet as you are standing or walking Touch Voltage : Voltage difference between equipment being touched and the ground at your feet
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GPR ( Ground Potential Rise )
- V = I * R Fault current into the grounding system times resistance to “remote earth”
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Grounding Design procedure :
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Substation Layout Security and Serviceability Fencing Roadways
Lighting Foundation Stability Elevation Containment Controls Raceways Trench Conduit Controls house
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Substation Layout Bus Layout Reliability Configuration Physical Layout
Cost Physical Layout Forces Potentials Materials used Copper Aluminum
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Questions? Website: http://umkcsubstationdesign.weebly.com/
Professional Guidance Provided by: Website:
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