Electric power distribution from powerplant to homes

  • Thread starter Thread starter EN1986
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SUMMARY

The discussion centers on the efficiency of electric power transmission from power plants to homes using high voltage. It is established that higher voltage reduces current, which in turn minimizes power losses in transmission lines due to resistance. The relationship between power (P), voltage (V), and current (I) is defined by the equations P = VI and P_loss = I²R, demonstrating that increasing voltage while maintaining power results in lower current and significantly reduced losses. Additionally, transformers play a crucial role in adjusting voltage levels for efficient transmission and distribution.

PREREQUISITES
  • Understanding of Ohm's Law (V = IR)
  • Familiarity with power equations (P = VI and P_loss = I²R)
  • Knowledge of transformer functions in electrical systems
  • Basic concepts of electrical resistance and its impact on power loss
NEXT STEPS
  • Research the role of transformers in high-voltage transmission systems
  • Learn about the impact of line resistance on power loss in electrical distribution
  • Explore the design and efficiency of high-voltage power lines
  • Investigate the relationship between voltage levels and infrastructure costs in power distribution
USEFUL FOR

Electrical engineers, utility managers, and anyone involved in power distribution and transmission systems will benefit from this discussion, particularly those looking to optimize efficiency and reduce losses in electrical networks.

  • #31
By the way, even overhead line presents insulation: the insulators and the air. However, if the heat is evacuated by conduction in cables in the overhead line it is convection and radiation the evacuation way. The conductor temperature is limited by metal mechanical properties since annealing aluminium produces elongation of the conductor and so permanent sag increase. For short-circuit the limit may be the fusing temperature of the conductor. So, the melting point may be the limit.
 

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