- 2080 Baishakh
Powerhouse components by functional use
Short answer
Powerhouse components group by function: water passage (penstock, valve, spiral casing, draft tube), energy conversion (turbine, generator, governor), electrical control (transformers, switchgear, control room), auxiliaries (cooling, drainage, air, fire), handling (EOT crane, erection bay, workshop), and structure (substructure, floors, superstructure).
Describe the components of a power house in a hydropower plant based on their functional use.
The parts of a powerhouse are grouped by what they do.
1. Water passage (hydraulic) parts
- Penstock and main inlet valve bring water to the machine and allow isolation.
- Spiral casing, stay ring and guide vanes distribute the water to the runner.
- Draft tube and tailrace discharge the water after the runner, recovering head.
2. Energy conversion parts
- Turbine and shaft: convert water energy to mechanical energy.
- Generator and exciter: convert mechanical to electrical energy.
- Governor and oil pressure unit: control speed by moving the guide vanes.
3. Electrical and control parts
- Transformers, switchgear, busbars and switchyard: step up and transmit power.
- Control room, relays, instrumentation, batteries and cables: monitoring, protection and operation.
4. Auxiliary services
- Cooling water, drainage and dewatering, compressed air, lubricating oil, fire protection, ventilation and lighting.
5. Handling and service parts
- Overhead travelling (EOT) crane and erection bay: for installation and maintenance of heavy parts.
- Workshop, store, offices, staff rooms, access roads and parking.
6. Structural parts
- Substructure (foundation, draft tube concrete), intermediate floors (turbine and generator floors) and superstructure (walls, roof, crane beams).
✓ Answer checked by Claude Opus 5.5 (high effort)
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