Two power system areas operating at a nominal frequency of 60 Hz are connected with a tie line, and have the following characteristics: Area 1: R1 = 0.015 pu and D1 = 0.9 pu on a base of 1500 MVA Area 2: R2 = 0.02 pu and D2 = 1 pu on a base of 400 MVA The power flow direction on the tie line is from Area 1 to Area 2. Using a common base of 1000 MVA, what is the change in prime mover power (in MW) in Area 1 (APmech1) for a load increase of 250 MW in Area 1? Select one: O a. None of these O b. 816.99 MW O c. 164.44 MW O d. 205.33 MW

Two power system areas operating at a nominal frequency of 60 Hz are connected with a tie line, and have the following characteristics: Area 1: R1 = 0.015 pu and D1 = 0.9 pu on a base of 1500 MVA Area 2: R2 = 0.02 pu and D2 = 1 pu on a base of 400 MVA The power flow direction on the tie line is from Area 1 to Area 2. Using a common base of 1000 MVA, what is the change in prime mover power (in MW) in Area 1 (APmech1) for a load increase of 250 MW in Area 1? Select one: O a. None of these O b. 816.99 MW O c. 164.44 MW O d. 205.33 MW

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

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.16P: A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and...

See similar textbooks

Similar questions

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
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
In a house there is a three-wire system configured as follows: A refrigerator with an impedance of (10 + j 10) Ω is connected to line L1 and to a neutral. And to line L2 and neutral all the lighting in the house consisting of 10 luminaires of 20 W each. In addition, there is a 240 V dryer that consumes 8 kW connected between the two lines. Calculate current in line L1, line L2 and neutral total power consumed Problem was Initially stated in spanish, i will add it in case it works. En una vivienda se tiene un sistema trifilar configurado de la siguientemanera. Se tiene conectada a la línea L1 y a neutro una refrigeradora con impedancia de (10 + j 10)Ω y a la línea L2 y neutro toda la iluminación de la casa consistente en 10 luminarias de 20 W cadauna. Además, se tiene una secadora a 240 V que consume 8 kW. Calcule a) corriente de la línea L1 yde la línea L2 y de neutro b) potencia total consumida.
A Factory is supplied froma 3-phase, 4-wire, 400 V, simmetrical system. The resistance of each line is 0.4 Ωand of the neutral 0.6 Ω. The power input to the main is as follows: 10 KVA at a laggin poer factor ofd 0.7 to phase R, 10 KVA at a leading power factor of 0.7 to phase S, and 10 KVA at unity power factor to phase T. Calculate the current in the neutral wire and the voltaje between line R and the neutral at the Factory. Phase secuence RST.
A three phase,Y connected, 215 V (line to line), 7.5 kW, 60 Hz, three pole IM has the following parameter values in Ohm/phase referred to the statorR₁ = 0.294 Ohm, R₂ = 0.144 Ohm, X₁ = 0.203 Ohm, X₂ = 0.409 Ohm, Xm = 10.25 Ohm.The total friction,windage and core losses may be assumed to be constant at 350 W independent of load. For a slip s = 0.02, compute the followingsa) Stator Currentb) Power Factor(pf)c) Rotor Speedd) Power Output(Shaft)e) Output(Shaft) Torquef) Efficiency(n)
For transferring electrical power at 220 kV, six conductors of ACSR Drake constitute a 60Hz double circuit three phase line arranged as shown below. The vertical spacing between consecutive conductors is 14ft; the longer horizontal distance is 32ft whereas the shorter horizontal distance is 25ft. a. Find the inductance per phase per mile and the inductive reactance per phase in ohms per mile. b. Find the capacitive reactance to neutral in ohm-miles. c. Find the resistance per phase per mile in ohms per miles. d. If the length of the line is 90 miles then draw an equivalent circuit of the line and analyse the open circuit and short circuit performance of the line. e. Find the maximum power we can transmit over the line. f. If the line is delivering power to a load of 20MW at 0.8 power factor lagging then find the voltage at the receiving end of the line. Also, Determine the voltage regulation, losses and efficiency of the line. g. If a fixed shunt compensation of 3 MVAr is attached at…
Which termination would result to a phase change of 180 degrees at the load if Zo = 100 ohm? a. 50 ohm b. short circuit c. 75 ohm d. all of these What is the purpose of impedance matching? a. maximum return loss b. maximum SWR c. maximum load power d. maximum reflection A short piece of transmission line that may be open or shorted and used for impedance matching purposes. a. converter b. decoder c. stub d. transformer
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
Estimate the distance over which a load of 15000 KW at p.f-0.8 lagging can be delivered by a 3-phase T.L having conductor each of resistance 0.8 2 per km the voltage at the receiving end is to be 132 KV and the losses in the line is to be 5% of received power
L-type equivalent circuit and parameters for a continuous sinusoidal phase of a 5.5 kW, 1450 rpm, line voltage 220 V and frequency 50 Hz star-connected 3-phase ASM, ignoring core (iron) losses given as follows: 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?
L-type equivalent circuit and parameters for a continuous sinusoidal phase of a 5.5 kW, 1450 rpm, line voltage 220 V and frequency 50 Hz star-connected 3-phase ASM, ignoring core (iron) losses given as follows: R1=0.21 Ohm, R2=0.18 Ohm, X1=X2=0.66 Ohm and Xm=9.9 Ohm How many times the rated current will the inrush current be when the ASM is started directly?
Electric Machine-check image, all question there. Consider the above equivalent circuit of IM, A six pole, 250 volt(line to line), 60Hz, Y connected , three phase IM has the following parameters on a per phase basis: R1=0.125Ω , R2=0.45 Ω, X1=0.5 Ω, X2=0.75 Ω, Xm=50 Ω, Rc=225 Ω The friction and windage loss is 115 W. Determine the following at its rated slip of 1.5% a)Excitation Circuit b)Power developed by motor(Pd) c)Shaft Power(Pshaft) d)Shaft Torque(Tshaft) e)Efficiency