Impedance / DUTT, Electrical Engineering

3) The impedance for a 120 km, 230-kV line is given as j 0.9 ohm/km and
j 0.6 ohm/km for self and mutual terms respectively; resistance is neglected. The mho
characteristic for the line’s distance protection is set to reach 100 km at the line’s
characteristic impedance angle. Assume that a line-to-ground fault occurs at a distance “x”
from the relay by contact with a tree branch, where the tree presents an impedance of 30
ohms to the flow of fault current.
(a) What is the impedance seen by the relay, expressed as a function of x?
(b) What is the relay reach (in km) for this fault condition (i.e. at what distance from the relay
is the fault on the verge of going undetected)?
Posted Date: 4/2/2013 3:39:00 PM | Location :







Related Discussions:- Impedance / DUTT, Assignment Help, Ask Question on Impedance / DUTT, Get Answer, Expert's Help, Impedance / DUTT Discussions

Write discussion on Impedance / DUTT
Your posts are moderated
Related Questions
show a schematic diagram of michelson interferometer

Effect of Supply  Voltage a.As the applied  as voltage  is increased hysteresis loss increases. b.Eddy current losses are given by W e α f 2 t 2 B 2 m Where B m =

Explain the operation of IRET instruction.  What memory locations contain the vector for an INT 34 instruction? The Interrupt return (IRET) instruction is utilized only along w


Q. What is the significance of giving a negative voltage to the gate higher than that of the source?  This is done to reach the saturation at a lower of level of V DS .  The re

Explain mechanisms of propagation of radio communication. Radio communication deals with electronic radiation of electromagnetic energy from one point to another through atmosp

The electric roadway system shall utilize solar energy as the main power source. The electric roadway system shall negotiate with the power utility on backup power supply.

Determine the total energy loss: Two capacitors C 1 = 50 μF and C 2 = 100 μF are connected in parallel across 250 V supply. Determine the total energy loss. Figure

Q. Consider a pair of coupled coils as shown in Figure of the text, with currents, voltages, and polarity dots as indicated. Show that the mutual inductance is L 12 = L 21 = M by

What is meant by polling? In polling schemes, a set of address lines is driven by the controller to address every of the masters in sequence. When a bus request is received fro