umkc senior substation design team website:
TRANSCRIPT
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UMKC Senior SUBSTATION DESIGN TEAM
Website: http://umkcsubstationdesign.weebly.com/
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UMKC Senior Substation Design TeamMembers:Zane Potts - Power TransformerPayam Ansari - Circuit BreakersBrandon Howland - Protective RelayingRobert Biggs - Lightning MitigationEhab Abdelhaq - Grounding Gary Kertz - Substation Layout Layout
Website: http://umkcsubstationdesign.weebly.com/
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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
Circuit Breaker
Current Transformer
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Purpose of Circuit Breakers and Disconnect Switches
Size of Breakers• Fault Current
• Continuous Current• X/R Ratio
• Power Flow
Disconnect Switch and Circuit Breaker
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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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CoordinationLightning/Switching SurgeEhab – GroundingGary – Substation & Equipment LayoutLine PhasingGary – Substation & Equipment Layout
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Why grounding is important ?1-Path for short circuit to remote earth2-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 :– Touch Voltage : Voltage difference between equipment being touched and the ground at your feet
– Step Voltage : Voltage difference in ground between your feet as you are standing or walking
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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
ControlsRacewaysTrenchConduitControls house
Security and ServiceabilityFencing RoadwaysLighting FoundationStabilityElevation Containment
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Substation Layout Bus LayoutConfigurationReliabilityCostPhysical LayoutForces PotentialsMaterials usedCopperAluminum
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Website: http://umkcsubstationdesign.weebly.com/
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