Power transmission via Transformer.

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SUMMARY

Power transmission via transformers involves stepping up voltage to reduce current, thereby minimizing power loss during transmission. The relationship between power loss and voltage is clarified by the equation P=I^2R, indicating that power loss is dependent on the current and the resistance of the transmission lines, not the voltage delivered to the load. The voltage drop across the conductors is what affects power loss, not the line voltage itself. Therefore, increasing the voltage delivered to the load does not increase power loss.

PREREQUISITES
  • Understanding of electrical power equations, specifically P=V*I and P=I^2R.
  • Knowledge of transformer operation and voltage transformation principles.
  • Familiarity with transmission line resistance and its impact on power loss.
  • Basic concepts of electrical current and voltage in power systems.
NEXT STEPS
  • Research the principles of transformer efficiency and loss minimization techniques.
  • Learn about transmission line design and the impact of resistance on power loss.
  • Study the effects of high-voltage transmission on overall power system performance.
  • Explore advanced topics in power system analysis, including load flow and voltage drop calculations.
USEFUL FOR

Electrical engineers, power system designers, and anyone involved in optimizing electrical transmission efficiency.

moatasim23
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In transmission lines the the voltage is stepped up to a specified level thereby reducing current to ensure its transmission with minimal power loss.
But we know that P=V*I
so by increasing the voltage won't Powerloss gets increased?
 
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The powerloss doesn't depend on the voltage delivered to the load, but on the voltage across the conductors of the transmission lines, this voltage depends on their resistance and the current through them. V_loss = I * R, and the powerloss will then be P = I * V_loss = I^2 R. So decreasing the current will decrease the losses, and increasing the voltage delivered to the load won't affect the powerloss at a..
 
The V in that equation refers to voltage drop, not line voltage.
 

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