Power Plant Construction and QA/QC
Section 7.4 – Hydroelectric Generators, Transformers and Controls
Engineering Technology Engineering Technology DivisionDivision
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Overview
Section 7.4 – Hydroelectric Generators, Transformers and Controls
• Many Changes
• Electrical Code
• Material Improvements
• Equipment Updates – Oil Filled
• Base Load Power Generation
• Salient Pole Generator – Extended Field Poles
• Due to Slow Speed
• Maintain Frequency
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Generator Ratings
Section 7.4 – Hydroelectric Generators, Transformers and Controls
• Speed 300 to 1200 RPM• Frequency 60 Hz (cps)• Rotor Diameter 2 to 62 ft• Generator Rating 50 kVA to 900 mVA• Power Factor 0.8 to 1.0 (0.95 normal)• Power Capacity 50 to 1000 MW• Efficiency 97.5% to 98.8%• Output Voltage 18 kV• Transformer Output 500 kV
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Generator Types - Standard
Section 7.4 – Hydroelectric Generators, Transformers and Controls
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Generator Types - Umbrella
Section 7.4 – Hydroelectric Generators, Transformers and Controls
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Generator Types – Semi Umbrella
Section 7.4 – Hydroelectric Generators, Transformers and Controls
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Section 7.4 – Hydroelectric Generators, Transformers and Controls
Generator Components
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Voltages
Section 7.4 – Hydroelectric Generators, Transformers and Controls
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Transformers
Section 7.4 – Hydroelectric Generators, Transformers and Controls
Hoover Dam Switchyard
Chief Joseph Dam Generator Output Transformers
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Generator Circuit Breakers
Section 7.4 – Hydroelectric Generators, Transformers and Controls
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Battery Room
Section 7.4 – Hydroelectric Generators, Transformers and Controls
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Questions?
Section 7.4 – Hydroelectric Generators, Transformers and Controls