A dc transmission facility is modeled by the approximate series circuit shown below. If the load voltageis known to be Vload= 458.3 kilovolt (kV) what is the power loss in the line in megawatt (MW)? Writetwo(2) decimal places in your answer. Answer Format: 50.55MWI̟ Rine20 1Vs Rload 220 2Vlond = 458.3 kV%3!

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Answered: A dc transmission facility is modeled…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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A generator is rated 100 MW, 13.8kV and 90% power factor. The effectiveresistance is 1.5 times the ohmic resistance. The ohmic resistance isobtained by connecting two terminals to a DC source. The current andvoltage are 87.6 A and 6 V respectively. What is the DC resistance perphase? What is the effective resistance per phase? Whole Solution
S1) The serial impedance per unit length of a three-phase 140 km power transmission line is 0.09 + j0.88 ohm/ km and its admittance is j4.1x10-6 S / km. Power factor under 210 kV interphase voltage from the end of this energy transmission line A power of 150 MVA, which is 0.85 back, is drawn. Using this transmission line data and the T equivalent circuit model, the line Calculate the head voltage (V1), current (I1) and load angle.
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A hydro-electrie station is operated with a mean head (h) of 30 m and consume (discharge water) 218.75 * 10 6 m3 of water in one ycar for the average load. The expected load factor for the station is 80 %. Calculate the power in Kw for which the station should be designed (max.load). Assume that the mechanical efficiency of the turbine is 90% and the efficiency of the generator is 95%,
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Q.10: 380V line voltage, 3-¢, 4-wire Y-connected, power system with A-oad (Zag=10£-30°Q, Zac=10£-30°Q & Zca=20260°Q). Find the line cumrents and the power dissipated in the load when if Vp,=V,,£1 20°v? (Ans.: 1,=55.28/-10°A, 15=65.822150°A, 1,.=23 55/-84°A, & Pr= 28.6KW)
A dc transmission facility is modeled by the approximate series circuit shown below. If the load voltage is known to be Vload= 458.3 kilovolt (kV) what is the power loss in the line in megawatt (MW)? what is the voltage at the source Vs in kilovolt? Write two(2) decimal places in your answer.
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. A power station has a connected load of 48 MW. The energy generated for the year is 61,500 MWh. If the station has a load factor of 35%, solve the demand factor of the station. Answer: 0.4179 or 41.79% Subject: Distribution System and Substation Design
Electric Machine-check image, all question there. Consider the above equivalent circuit of IM. A three phase, Y connected , 215 V (line to line), 7.5Kw , 60Hz , three pole IM has the following parameter values in Ω/phase referred to the stator R1=0.294Ω , R2=0.144 Ω, X1=0.203 Ω, X2=0.409 Ω, Xm=10.25 Ω The total friction , windage and core losses may be assumed to be constant at 350W independent of load, For a slip s=0.02, compute the followings a)Stator current b)Power factor(pf) c)Rotor speed d)Power Output(shaft) e)Output(shaft) torque f)Efficiency

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