٩ Consider the system shown in below fig. phase 'b'is open due to conductor break.Calculate the sequence or symmetrical components of currents and also the neutral current.= 50[0° AI, = 50[120° A50/6º5oL120°la0 = 17.77 L60, la1 = 44.44 LO, la2 = 17.77 L-60In = 60L60None of the abovela0 = 15.55 L60, la1 = 66.66 LO, la2 = 15.55 L-60In = 30L60la0 = 16.66 L60, la1 = 33.33 LO, la2 = 16.66 L-60In = 50L60

In this question , we will find symmetrical components of current...

Consider the system shown in below fig. phase 'b'is open due to conductor break.Calculate the sequence or symmetrical components of currents and also the neutral current. 1- 50L0° A 1,- 50120° A 5o6 50l120 la0 = 17.77 L60, la1 = 44.44 LO, la2 = 17.77 L-60 In = 60L60 None of the above la0 = 15.55 L60, la1 = 66.66 LO, la2 = 15.55 L-60 In = 30L60 la0 = 16.66 L60, la1 = 33.33 LO, la2 = 16.66 L-60 In = 50L60

Consider the system shown in below fig. phase 'b'is open due to conductor break.Calculate the sequence or symmetrical components of currents and also the neutral current. 1- 50L0° A 1,- 50120° A 5o6 50l120 la0 = 17.77 L60, la1 = 44.44 LO, la2 = 17.77 L-60 In = 60L60 None of the above la0 = 15.55 L60, la1 = 66.66 LO, la2 = 15.55 L-60 In = 30L60 la0 = 16.66 L60, la1 = 33.33 LO, la2 = 16.66 L-60 In = 50L60

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.31P: Figure 4.37 shows the conductor configuration of a three-phase transmission line and a telephone...

See similar textbooks

Similar questions

The resistance and reactance of the single-phase 60Hz transmission line conductors are 8.8 ohm and 10.4 ohm respectively. The transmission line delivers 55MW at a power factor of 0.78 lagging to the load with 50kV receiving end voltage. Determine the following a) The inductance of the transmission line in mH Answer for part 1 b) Sending end power factor Answer for part 2 c) Percentage voltage regulation Answer for part 3 d) Percentage Efficiency Answer for part 4
The resistance and reactance of the single-phase 60Hz transmission line conductors are 7.6 ohm and 6.6 ohm respectively. The transmission line delivers 20MW at a power factor of 0.66 lagging to the load with 54kV receiving end voltage. Determine the following a) The inductance of the transmission line in mH b) Sending end power factor c) Percentage voltage regulation d) Percentage Efficiency
The value of cosφ=0.8 is given for all receivers of the 3-phase Al-conductor branch network in the figure.AB, BC, CD, DE, EF, DG, GH 80 meter. If the forces withdrawn Pb=16kw, Pc=12kw, Pe=12kw, Pf=8kw, Pg=12kw, Ph=4 kw At all receiving points where these forces are withdrawnmains voltage will be accepted as U=380V. Calculate the transformer output section for a maximum voltage drop of 5%.(γAl=35)
Please in 15 minutes VERY EASY! Line conductors with 3-phase, 50Hz, “68” kV values are positioned horizontally as shown in the figure. The diameter of the conductors is “1.29” cm and the line length is “110” km. Find the following according to these values? (ε0=8*854*10-12F/m) a-) Find the capacitance value of a phase? b-) Find the capacitive reactance value of a phase? c-) Find the current value that will flow from a single phase line? (charge current, using Capacitive reactance)
A 210V, 50 Hz, single phase radial distribution system, the resistance of the wire is 0.0008 ohm/m supply and return. Two loads are connected and it consumes 10 and 10 A respectively and are fed from the cable at distance of 15 and 15 respectively. Calculate the voltage available across load 1 and 2
1. Repeat Example 4.2, parts (a) and (b), assuming a three-phase 34.5 kV wye-grounded feeder main that has 350 kcmil 19-strand copper conductors with an equivalent spacing of 37 in between phase conductors and a lagging-load power factor of 0.9. K=3.5935 ×10-5 [%VD/KVA-mi]Below attached image is for example 4.2
please help me dont copy from google In a 250 km long, interphase voltage of 154 kV, 50 Hz three-phase transmission line, the diameter of the steel core aluminum conductors is 22 mm, the roughness coefficient of the conductors is 0.8, and the spacing between the phases is 4 m. Average air temperature along the line is 27 degrees, air pressure is 750 mm Hg. Calculate the total corona loss per phase at 1.5 times the operating voltage under these conditions (E0=21.2 kV/cm)
In a 3-phase, 4-wire system, the currents in R. Yand B lines under abnormal conditions of trading are as under IR-100 230 A; IY-50 2300 A: IB-30 2180 A Calculate the positive, negative and zero sequence currents in the R-line and return current in the neutral wire.
A three phase transmission line is made up of aluminum conductor wires 80 km long. Find the dc and ac loop resistance if the conductors are 480 mils in diameter. Resistivity = 2.8 x 10 -8 ohm – meter.
An energy transmission line with a length of 130 km transmits 150MVA of power at 380 kV voltage. The conductors used have a conductivity of 35 [m / mm mm²] and a diameter of 28.11mm. The final temperature reached by this transmission line is 66 degrees. (NOTE = temperature coefficient of conductor a20deg = 0.00403deg ^ -1) Approximately how many kWatts is the total loss in the three-phase line at 20 degrees?
Three conductors of a 3-phase overhead line are arranged in a horizontal plane in the order a-b-c, distance between a and b is 6 m, b and c is spaced 6 m apart. The diameter of each line conductor is 1.5 cm. Calculate the Inductance per phase per km (L1) for this arrangement. Calculate Inductance per phase per km(L2) if the spacing between the conductors are reduced by half. Calculate the Ratio of L2 with respect to L1.
Electric Machine; Check image, all question there. Consider the above approximate equivalent circuit for IM. A six-pole, 220Volt (line to line), 50Hz, Y connected, three phase IM has the following on a per phase basis: R1=0.5Ω , R2=0.25 Ω, X1=0.75 Ω, X2=0.5 Ω, Xm=100 Ω, Rc=500 Ω The friction and windage loss is 150 W. Determine the following at its rated slip of 3.5% a)Total Impedance(Zt) b)Rotor Copper Loss c)Core loss(Pm) d)Shaft Power(P0) e)Efficiency