Gas turbine features and Cross-Bonding- A system is cross-bonded if the
arrangements are such that the circuit provides
electrically continuous sheath runs from earthed termination to earthed termination but with the sheaths so sectionalized and cross-connected in order to eliminate sheath circulating currents. In such case, a voltage will be induced between screen and earth, but no significant current will flow. Maximum induced voltage will appear at the link boxes for cross-bonding. This method permits a cable current-carrying capacity as high with single point bonding but longer route lengths than the latter. It requires screen separation and additional link boxes.
PRINCIPLE OF GAS TURBINE GENERATOR
To Generate Electricity- the gas turbine heats a mixture of air and fuel at very high temperatures, causing turbine blades to spin. The spinning turbine drives a generator that converts the energy into electricity. The gas turbine can be used in combination with a steam turbine in a combined cycle power plant to create power extremely efficiently.
1. COMBUSTOR-Air-fuel mixture Ignites-Gas turbine
compresses air and mixes it with fuel that is then burn
at extremely high temperatures, creating a hot gas
2. COMPRESSOR- Hot gas spins turbine blades- hot air/fuel mixture moves turbine blades that spin quickly.
3. TURBINE Spinning blades turn drive shaft FAST spinning turbine blades rotate turbine drive shaft. Kinetic Energy Conversion-Mixed of HOT GASES and AIR-SPIN the BLADE@ HIGH TEMPERATURE
4. Turbine Rotation Powers the Generator-Spinning
turbine is connected to rod in a generator that turns
a large magnet surrounded by coils of copper wire.
5. Generator Magnet-causes electrons to move and
creates Electricity-Fast-revolving generator magnet
creates a powerful magnetic field that lines up the electrons around the copper coils -causes to move.
Movement of electrons through a wire is electricity.
6.Stator - Stationary component. It contains a set of
electrical conductors wound in coils over an iron core
7. Rotor / Armature -Rotor generates a moving magnetic field around the STATOR, which induces a voltage difference between windings of the stator. This produces alternating current (AC) output of the generator to power equipment
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