What is the meaning of Ferranti effect?

In electrical engineering, the Ferranti effect is the increase in voltage occurring at the receiving end of a very long (> 200 km) AC electric power transmission line, relative to the voltage at the sending end, when the load is very small, or no load is connected.

What do you mean by Ferranti?

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.

Which is true for Ferranti effect?

The ferranti effect is an phenomenon where the steady voltage at the open end of an uncompensated transmission line is always higher than the voltage at the sending end.It occours as a result of the capacitive charging current flowing through the inductance of the line and resulting over voltage increases according to …

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.

Which is the best definition of the Ferranti effect?

Freebase (0.00 / 0 votes)Rate this definition: Ferranti effect In electrical engineering, the Ferranti effect is an increase in voltage occurring at the receiving end of a long transmission line,to the voltage at the sending end. This occurs when the line is energized but there is a very light load or the load is disconnected.

What does Ferranti mean in a transmission line?

Let us consider the long transmission line in which OE represents the receiving end voltage; OH represent the current through the capacitor at the receiving end. The phasor FE represents the voltage drop across the resistance R. The voltage drop across the X (inductance). The phasor OG represents the sending end voltage under a no-load condition.

Which is the reference phasor for the Ferranti effect?

In general for a 300 Km line operating at a frequency of 50 Hz, the no-load receiving end voltage has been found to be 5% higher than the sending end voltage. Now for the analysis of the Ferranti effect let us consider the phasor diagrams shown above. Here, V r is considered to be the reference phasor, represented by OA.

How is the Ferranti effect determined for a small Pi?

The equation for a small PI can be deduced as follows known as Ferranti effect equation. However in case if the resistance of transmission lines is neglected. This equation is showing that is in negative value which means that the voltages at the receiving end are greater than that of transmission end.