How is the Ferranti effect of transmission lines corrected?

The influence of inductance and capacitance on the receiving end voltage of AC transmission lines at light load conditions is the root cause of the Ferranti effect. Shunt compensation and series compensation can be employed in transmission lines to reduce the Ferranti effect.

Which element can reduce Ferranti effect?

shunt reactors
Which of the following equipment or element can reduce Ferranti effect? Explanation: For high voltage and extra high voltage lines shunt reactors are provided to absorb part of charging current. As leading charging current is reduced. Ferranti effect is also reduced.

What is Ferranti effect in transmission system?

The Ferranti Effect is a voltage increase in the receiving end of an electrical transmission line when it is operated in a no-load, or low-load, condition. This results in a receiving end voltage value higher than the sending point. This phenomenon was discovered by electrical engineer Sebastian Ziani de Ferranti.

In which transmission line Ferranti effect occurs?

Ferranti effect is more occurs in short transmission cables because their capacitance is high.

What is Ferranti effect Mcq?

Ferranti effect occurs in case of no load or light load condition of a medium and long transmission lines due to capacitance effect of the transmission lines. Ferranti effect occurs in case of no load or light load condition of a medium and long transmission lines due to capacitance effect of the transmission line.

What is skin effect and Ferranti effect?

When a conductor carries steady current ie, direct current the current density throughout that conductor will be uniform. But while AC current flow through the conductor it will not be true, rather it has a tendency to concentrate near the surface of the conductor. This phenomenon is called as skin effect.

How can proximity effect be reduced?

It is possible to reduce the proximity effect by reducing the size of the conductor and the frequency and by increasing the voltage and space between conductors.

Why is the Ferranti effect severe in a long line transmission system?

The effect is due to the voltage drop across the line inductance being in phase with the sending end voltages. Therefore inductance is responsible for producing this phenomenon. The ferranti effect will be more pronounced the longer the line and the higher the voltage applied.

Is Ferranti effect good or bad?

Therefore, the Ferranti effect tends to be a bigger problem on lightly loaded lines, and especially on underground cable circuits where the shunt capacitance is greater than with a corresponding overhead line. The Ferranti Effect will be more pronounced the longer the line and the higher the voltage applied.

Why Ferranti effect occurs more in case of underground cables?

The Ferranti effect is much more pronounced in underground cables, even in short lengths, because of their high capacitance per unit length, and lower electrical impedance. , hence in increased voltage on the receiving side.

What is ferferranti effect in a transmission line?

Ferranti Effect in a transmission Line is reduced using voltage compensation which in turn is accomplished by Shunt Reactor. Shunt Reactor is just like a Transformer but it has only primary and no secondary.

What is the Ferranti effect on a 250 km power line?

If it’s a short line no control is needed as the voltage rise will not be significant during light load or no load condition i.e. Ferranti Effect will not be dominating. For a medium length line of 250 km the rise in voltage will be about 9.4\% and it is above tolerance limit of 5\% for 400 kV and above.

What is the role of shunt reactor in transmission lines?

Shunt Reactor absorbs the excess reactive power generation during no load / light load condition and thus helps in stabilizing the voltage of Transmission Line. But for longer lines of about 400 km and above compensation has to be provided somewhere in the middle of the line in addition to the receiving end.

What is a compensation device in a transmission line?

The compensation device is a shunt reactor which is connected in parallel with the transmission line. It reduces the voltage level by absorbing the reactive power. Running the transmission line with higher load.