Much higher.
Stepping up voltage from 11kV to 400kV during transmission is primarily done to reduce energy losses over long distances. Higher voltages allow for lower current flow for the same power transfer, which minimizes resistive losses (I²R losses) in the transmission lines. Additionally, higher voltage transmission is more efficient and enables the use of thinner, lighter conductors, reducing infrastructure costs. This process is typically achieved using transformers at substations.
A high voltage like 750kV is used in transmission lines because this reduces the current in the wires for a given amount of power. A reduced current will reduce the power lost in transmission (I^2R).CommentFar more importantly than reducing line losses, it reduces the voltage drop along the line which would, otherwise, be enormous!
Transmission loss reduce by using 1) higher diameter conductor (R = q l / a) or specially maded low loss conductors 2) using energy efficient equipment such as low loss transformer 3) twisted conductors instead of solid 4) proper monitoring and control of transmission eqipment 5) use of high temperature super conductors ....etc
Using larger amounts of copper will decrease copper loss (use bigger wire than necessary).
Changing the voltage during power transmission increases efficiency by reducing current flow for the same power level, which minimizes energy losses due to resistance in the transmission lines. Higher voltage allows for lower current, resulting in reduced I²R losses (where I is current and R is resistance). This means that less energy is wasted as heat, improving the overall efficiency of the power transmission system. Additionally, efficient voltage levels can enable longer transmission distances with less energy loss.
Stepping up voltage from 11kV to 400kV during transmission is primarily done to reduce energy losses over long distances. Higher voltages allow for lower current flow for the same power transfer, which minimizes resistive losses (I²R losses) in the transmission lines. Additionally, higher voltage transmission is more efficient and enables the use of thinner, lighter conductors, reducing infrastructure costs. This process is typically achieved using transformers at substations.
There are losses in d.c. transmission lines, due to their resistance. But there are no reactive losses. So, d.c. transmission lines have less losses in comparison to an equivalent a.c. transmission line.
A high voltage like 750kV is used in transmission lines because this reduces the current in the wires for a given amount of power. A reduced current will reduce the power lost in transmission (I^2R).CommentFar more importantly than reducing line losses, it reduces the voltage drop along the line which would, otherwise, be enormous!
Transmission loss reduce by using 1) higher diameter conductor (R = q l / a) or specially maded low loss conductors 2) using energy efficient equipment such as low loss transformer 3) twisted conductors instead of solid 4) proper monitoring and control of transmission eqipment 5) use of high temperature super conductors ....etc
Electricity needs to be transformed before distribution to reduce energy losses and lower costs. Transformers change the voltage levels of electricity to make it suitable for long-distance transmission over power lines. High voltage electricity can travel more efficiently over large distances, minimizing energy losses due to resistance in the wires.
Power lines have a high voltage to reduce the amount of current flowing through them, which helps to minimize heat loss and energy waste during the transmission of electricity.
Usage of such high voltages will increase the efficiency of the transmission lines and decreases the losses in the line. It also reduces the requirement of conductor size.
Using larger amounts of copper will decrease copper loss (use bigger wire than necessary).
Changing the voltage during power transmission increases efficiency by reducing current flow for the same power level, which minimizes energy losses due to resistance in the transmission lines. Higher voltage allows for lower current, resulting in reduced I²R losses (where I is current and R is resistance). This means that less energy is wasted as heat, improving the overall efficiency of the power transmission system. Additionally, efficient voltage levels can enable longer transmission distances with less energy loss.
Electricity is transmitted at high voltages, such as 400,000V, to reduce energy losses that occur due to resistance in the transmission lines. Higher voltage allows for lower current for the same power transmission, which significantly decreases resistive losses, typically calculated using the formula (P = I^2R). Additionally, high-voltage transmission enables the efficient movement of electricity over long distances, making it feasible to connect power generation sources located far from consumption areas. Lower voltage levels, like 25,000V, would result in higher energy losses and require thicker, more expensive conductors to handle the increased current.
Increase the voltage in the lines.
in order to reduce the transmission line losses we need low impedance...Low impedance also improves power transfer capacity of the line..