Transcript No Slide Title - Electrical and Computer Engineering

Possible Relaying Schemes
• Differential
– General Electric TTS
– Schweitzer 387
• Overcurrent
– General Electric MDP
– Schweitzer 387
• Distance
– General Electric - D60
– Schweitzer 321
• Directional
– General Electric ALPS
– Schweitzer 321
Design Team 15
Team Members
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Caleb Emmes
Thomas Carpenter
Steve Stec
Jason Sundquist
Tim Grunlund
Kevin Vicklund
Advisors
• Faculty
– Dr. Bruce Mork
• Consumers Energy
– John Zipp
– John Larson
– Rich Cottrell
Project Definition
Design an economic and efficient relay
protection scheme for a 345/138 kV
300/400/500 MVA transformer and
surrounding transmission lines.
Microprocessor Relays
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There are several brands of relays
which may be used to protect the
power system. Microprocessor
relays are designed to monitor
several electrical inputs
simultaneously and decide whether
to send a “trip” signal to active
breakers or reclosers..
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There are many microprocessor
manufacturers...
– Schweitzer
– General Electric
– ABB
– Basler
Voltage and Current Transformers
•Used to breakdown voltages and currents that the relays are designed to operate with
Transformer Relay
Protection
Sponsored By:
Consumer’s Energy
Computer (CAPE) Fault Simulation
Using the computer to simulate faults within our system and using this
data to apply our relay settings.
Project Motivation
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Transformer Specifications
300/400/500 MVA
345/138 kV - 13.8 kV tertiary
Wye-primary and secondary
Delta-tertiary
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Protection Against
Overheating Low oil levels
Sudden pressure changes
Overcurrent
Faults on the surrounding lines
Transformer internal faults
Low nitrogen pressure