power plant construction and qa/qc section 4.4 – in-plant electrical distribution engineering...
TRANSCRIPT
Power Plant Construction and QA/QC
Section 4.4 – In-Plant Electrical Distribution
Engineering Technology Engineering Technology DivisionDivision
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Section 4.4 – In-Plant Electrical Distribution
Overview
• Loads vary – 5v to 13.8 kV
• Vital and Non Vital loads
• Both AC and DC voltage
• Multiple Power Sources – Battery, Emergency Generators
• Protection
• Voltage
• Current
• Faults
• Shorts
• Connection – Wire and bus trays
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Section 4.4 – In-Plant Electrical Distribution
Power Plant Distribution - Concept
Source 1
Transformer
Switchgear
Load Center
Vital Load Center
Transformer
Transformer
Source 2
Transformer
Switchgear
Load Center
Transformer
Source 3
13.8 kVTo
1,460 VTo
480 Vto
120 V
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Section 4.4 – In-Plant Electrical Distribution
Power Plant Distribution
Transformer
Switchgear
Equipment
SourceStorage
Bus Bars
Bus Bars
Wires
Wires
Wires
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Section 4.4 – In-Plant Electrical Distribution
Power Plant Distribution
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Section 4.4 – In-Plant Electrical Distribution
Switchgear – Circuit Breakers
Installed 13.8 kV Circuit Breaker Removed
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Section 4.4 – In-Plant Electrical Distribution
Switchgear – Circuit Breakers
Front 480 V Circuit Breaker Back
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Section 4.4 – In-Plant Electrical Distribution
Switchgear – Circuit Distribution
Circuit Breaker
Fuse
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Section 4.4 – In-Plant Electrical Distribution
Switchgear Bus Work
Internal
External
4,160 and 13,800 Volts
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Section 4.4 – In-Plant Electrical Distribution
Cable Trays 480 / 240 and 120 Volt
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Questions?
Section 4.4 – In-Plant Electrical Distribution