Purpose of Transmission & Distribution System
Transmits the power from source to load centre.
Transmission & distribution of electric energy have developed since 20th century. Bulk power is generated in power station which is very efficient so transmission & distribution must be required. Because of transmission & distribution, all consumers & industries get electricity.Transmits the power from source to load centre.
Transmission & distribution of electric energy have developed since 20th century. Bulk power is generated in power station which is very efficient so transmission & distribution must be required. Because of transmission & distribution, all consumers & industries get electricity.
Factors For Transmission Line Design:
• Voltage level.
• Conductor type & size.
• Line regulation & voltage control.
• Corona & losses.
• Proper load flow and system stability.
• System protection.
• Grounding.
• Insulation co-ordination.
• Sag and stress calculation.
• Conductor spacing.
• Conductor composition.
• Structure/Tower type.
ELEMENTS OF TRANSMISSION SYSTEM
i. Step –up transformer.
ii. Line support.
iii.Line insulator.
iv.Conductor.
v. Step-down transformer.
vi.Protective device.
vii.Regulator.
TYPICAL POWER SUPPLY SCHEME
•Generating station
•Primary transmission
•Secondary transmission
•Primary distribution
•Secondary distribution
