35. Fig. 29.17 shows the single line diagram of a 3-phase transmission line. The three phase short circuit fault (i.e. symmetrical fault) will be (i) more severe at F₁ (ii) more severe at F₂ (iii) same severe at F, and F₂ (iv) none of above 10 MVA 5₁14840 192 492 kV Fig. 29.17 5 MVA 10% 5% F2 Load

35. Fig. 29.17 shows the single line diagram of a 3-phase transmission line. The three phase short circuit fault (i.e. symmetrical fault) will be (i) more severe at F₁ (ii) more severe at F₂ (iii) same severe at F, and F₂ (iv) none of above 10 MVA 5₁14840 192 492 kV Fig. 29.17 5 MVA 10% 5% F2 Load

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

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.21P

See similar textbooks

Similar questions

Q. 13. Transmission systems that produce switching surges higher than lighting surges are the ones that operate at: A. 200 kV B. 300 kV C. 400 kV D. B and C Q. 14. When constructing volt time curve, if flashover occurs on the tail side of the wave, the point on the curve will have a voltage magnitude equal to: Whos A. The applied wave peak B. The applied wave flashover point C. The applied wave peak multiplied by a factor of 0.9 D. The applied wave flashover point multiplied by a factor of 0.9
A synchronous generator is feeding its rated power of 250 MW to a large 60 Hz network over a double circuit transmission The maximum steady state power that can be transmitted over the line with both circuits in service is 500 MW and is 350 MW with any one out of service. A solid three-phase fault occurring at the network-end of one of the lines causes it to trip. If inertia constant is H = 3.5 s, calculate the critical clearing angle and critical clearing time in which the circuit breakers must trip so that synchronism is preserved.
estion 9 The fault current level of a circuit breaker used in a transmission line with phase voltage 2.2 kV and breaking capacity 50 MVA is yet ......kA. vered -ked out of Flag question estion 10 The voltage between lines in a transmission line is the maximum value of the sine waveform. yet vered Select one: -ked out of O True Flag question O False
A 13.2 kV, 60 Hz, 3-phase synchronous generator is connected in star and its neutral point is earthed while inductance per phase is 0.02 Henry. The generator is connected to a bus bar through a circuit breaker. The distributed capacitance up to circuit breaker between phase and neutral is 0.015 micro Farad. Determine the following: (i) Peak re-striking voltage (in kV) across the contact of circuit breaker; (ii) Frequency of oscillations (in kHz); (iii) Time to occurs first peak re-striking voltage (in micro second) and (iv) The average rate of rise of re-striking voltage (in mega volts per second)
In the following network, the voltage magnitudes at all buses are equal to 1 p.u., the voltage phase angles are very small, and the line resistances are negligible. All the line reactances are equal to j1 p.u. (1) (2. P₂ = 0.1 p.u. P3 = 0.2 p.u. The voltage phase angle 83 in radian at bus 3 is (Assume one of the generator bus as slack bus and sin-¹ (0.1) = 0.1 rad) (a) -0.1 (b) -0.2 (c) 0.1 (d) 0
A synchronous generator has been synchronized to an infinite grid of 13.8 kV and 60 Hz. The generator prime mover C/C is such that the no-load frequency is 62.5 Hz and the power slope is 1 MW/Hz. The AVR C/C (The reactive power against the terminal voltage C/C) is such that the zero reactive power voltage is 14.6 kV, while the slope is 0.4 MVAR/kV. Calculate: (a) the kVA loading of the generator and its power factor. (b) the settings of the prime mover and AVR such that the generator delivers 3 MW at 0.85 lagging power factor.
A parallel connection of a RL branch with a C branch is connected across a 100V AC mains. At first R = 10 ohms, L = 20mH and frequency of 1000rad / s, the current measured is 2.2361A at 89.44 leading power factor. A) Determine the initial capacitance. B) However, a fault occurs on the capacitor branch making its capacitance 20% lower and a resistance of 5 ohms is detected. If this faulty circuit is rerun but at a frequency of 500 rad / s, determine the new current that will flow through the circuit.
Q A 50 Hz, 13.6kv, 3-phase arternator with grounded neutral hasinductance of 12 mH per phase and is connected to busbar 16]through a circuit breaker. The capacitance to earth between thealternator and the location of circuit breaker is o.03pF per phase.Neglect the resistance of the alternator. Determine the following:i) Maximum value of re-striking voltag. ."ro". the contactsof circuit breaker.i1) Frequency of transient oscillationsiii) Maximum value of RRRVir') Average RRRV upto the first peak of transientoscillations.
A lightning surge with a peak value of 3600kV strikes a transmission line at point A. Find the maximum value of the voltage surge that will be experienced by an equipment connected to point C. 3600kr Z, = 5002 Z, -1002 Zc 6000 %3D
The VSWR on an 50-Ohm transmission line is 5. The distance between successive voltageminima is 80 cm while the distance from the load to the first minimum is 30 cm. What are thereflection coefficient and load impedance
5.5 kW, 1450 rpm. L-type equivalent circuit and parameters for a continuous sinusoidal phase of a star connected 3-phase ASM with line voltage 220 V and frequency 50 Hz are given as follows, ignoring core (iron) losses: R1=0.21 Ohm, R2=-0.18 Ohm, X1=X2-0.66 Ohm and Xm = 9.9 Ohm How many times the inrush current will be the rated current when the ASM is started directly? Answer options group 8.0815 2.6455 4.3763 7.1534 1.2558 6.3414 5.2280 3.7473
A Cock-eroft Walton type voltage maltiplier has 7 atagea with capacitance tranaformer secondary voltage is 133kv 250H. IE the load eurrent to be upplied is 6. SnA. The opt imum number of stages for the minimum voltage drop in all equal to 0.07pr. The at a frequency of (a 21 (b 18 Ie 19 te 11 Ob. b Od.s Oe d