Gas Turbine Basics


Gas Turbine Basics


Gas Turbine Basics
Gas Turbine Basics

Different types of a Turbine

• Steam turbine:

Most power plants use coal, natural gas, oil or a nuclear reactor to create steam. The steam runs through a huge and carefully designed multi‐stage turbine to spin an output shaft that drives the plant’s generator.

• Water turbine:

The turbine used in a hydroelectric plant is completely different from a steam turbine as water is so much denser and slow moving than steam, but water turbines work on the same principle.


• Wind turbine:

Wind turbine is also known as windmill. It uses wind as its motive force. A wind turbine looks nothing like a steam turbine or a water turbine because wind is slow moving and very light but again principle is the same.

• Gas turbine:

A gas turbine is an extension of the same concept. In a gas turbine, a pressurized gas spins the turbine. In all modern gas turbine engines, the engine produces its own Pressurized gas, and it does this by burning something like propane, natural gas, and kerosene or jet fuel. The heat that comes from burning the fuel expands air, and the high‐speed rush of this hot air spins the turbine.


Practical Guide to AC Motors and Control Options

Table Of Contents

1. Introduction to a gas turbine

1.1. Basic working principle of a gas turbine (video tutorial in the CD)

1.2. Brayton cycle : Thermodynamic cycle of a gas turbine

1.3. Parts of a gas turbine

1.4. Operational modes of gas turbine

1.5. Important terms and techniques

2. GTG control architecture

2.1. Unit control panel 1

2.2. Unit control panel 2

2.3. OSM (Historian) introduction and alarms/trends viewing


3. GTG important P&ID’s

3.1. GTG P&ID’s

4. Start/Stop sequence of GTG

4.1. Ready to start

4.2. Auxiliaries starting

4.3. Crank

4.4. Ignition

4.5. Warm up

4.6. Acceleration to operative speed

4.7. Synchronization

4.8. Load control

4.9. Shutdown request

4.10. Trip request

4.11. Shutdown/trip sequence

4.12. Cool down sequence

5. GTG loop drawings

5.1. Loop drawings

5.2. UCP1 drawings

5.3. UCP2 drawings

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