Businessman Lance Smile own two large malls in Basilan Island. Both malls are connected in parallel and operating at a voltage of 13.2 kVms. The local utility supplied power to the malls through a feeder line with impedance equal to 0.1+j0.25 ohms. Mall 1 is consuming 400 kW at 0.75 pf lagging while Mall 2 is consuming 300 KVAR at 0.80 pf lagging. Determine the following: a) The local utility's sending-end (source) voltage. b) The total real and reactive power of the system. c) The overall pf of the system.

Businessman Lance Smile own two large malls in Basilan Island. Both malls are connected in parallel and operating at a voltage of 13.2 kVms. The local utility supplied power to the malls through a feeder line with impedance equal to 0.1+j0.25 ohms. Mall 1 is consuming 400 kW at 0.75 pf lagging while Mall 2 is consuming 300 KVAR at 0.80 pf lagging. Determine the following: a) The local utility's sending-end (source) voltage. b) The total real and reactive power of the system. c) The overall pf of the system.

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...

See similar textbooks

Similar questions

Explore the concept of smart grids and their role in enhancing the efficiency and sustainability of power distribution. What are the challenges in implementing smart grid technologies?
2. For the 3-bus network shown in figure, the impedances indicated are in per unit. a) Draw pu admittance diagram and obtain the bus admittance matrix Ybus for the network. b) Find the source voltages Eai and Ecz so that buses 1 and 2 have the voltages V = 120°, V2 = 1.05490° X= 0.20 pu X = 0.20 pu X= 0.36 pu Xo = 0.36 pu Xo 0.15 pu X p= 0.36 pu X- 0.36 pu X - 0.3 pu Load %3D
A low voltage distribution transformer feeds two different loads with a three-phase line. The nominal voltage of the line is 400 Volt. The total length of the feeder is 500 m. The distance from the transformer to these loads is 140 m and 340 m, respectively. Their consumption is 11 kVA with a 0.8 lagging power factor and 10 kW with a 0.8 lagging power factor, respectively. The feeder's cross-section is 15 mm2 and the feeder's conductivity is 56 m/ohm.mm2. Find the following information. The distance from the transformer to the maximum voltage drop point is m The maximum voltage drop is Volt The power loss between the transformer and 11 kVA load is Watt.
System AB is connected to system BC via a 1000 MW tie-line. The total capacity of the online units and the demand of system AB are 10000 MW and 8500 MW, respectively. The total capacity of the online units and the demand of system BC are 20000 MW and 17000 MW, respectively. System AB is importing 500 MW from system BC and all units operate with a common governor droop setting of 5% for both systems. All generating units are operating with sufficient spinning reserve and can respond to frequency changes. AB System capacity=10000 MW 8500 MW 9000 MW AB system load (a) (b) (c) (d) (e) T... 60.15 Hz 60.075 Hz 60.0 Hz 59.925 Hz 59.85 Hz BC system capacity = 20000 MW 500 MW 17500 MW Q34. Determine the new frequency of system AB if the tie-lie interconnecting systems AB and BC trips (a) (b) (c) (d) Q35. Determine the new frequency of system BC if the tie-lie trips 60.15 Hz 60.075 Hz 60.0 Hz 59.925 Hz 59.85 Hz 17000 MW BC system load
A short transmission line connects a step-up transformer on the source side with a series impedance of j0.5 ohms (referred to the primary) to a step-down transformer on the load side with a series impedance of 50 ohms (referred to the primary). The turn ratio of the step-up transformer is 1:10 and a no-load primary voltage of 13.2 (line-to-line) kv. The step-down transformer has a turn ratio of 15:1 and it has a Y-connected, balanced load of 0.667 +j 0.111 ohms connected to its secondary side. A capacitor bank of -j0.239 ohms is added parallel to the load. Assuming an ideal transmission line, the effective impedance of the system (per phase) seen by the source would be: O A. 0.093 + j0.249 O B. 0.372 + j0.996 OC.3.72 + j9.96 O D. None of the other choices are correct O E. 0.186 + j0.498
A 4-bus three-phase power system consists of the following equipment: • Generator 1 connected to bus 1 with a rated power of 20MVA, rated voltage of 20 kV, and a series reactance of 0.4 p.u. • Generator 2 connected to bus 5, with a rated power of 12MVA, rated voltage of 10 kV, and a series reactance of 0.3 p.u. Transformer 1 connected between buses 1 and 2, is wye-wye connected with a rated power of 20 MVA, rated voltages 20/100 kV, and a series reactance of 0.1 p.u. • Transformer 2 connected between buses 4 and 5, is wye-wye connected with a rated power of 12 MVA, rated voltages 12/110 kV, and a series reactance of 0.15 p.u. • Transmission Line 2-3 connects buses 2 and 3 and had a series impedance of 50 + j75 ohms. • Transmission Line 3-4 connects buses 3 and 4 and had a series impedance of 40 + j80 ohms. • Load A connected to bus 3 and abosorbes20 MW and 10 MVAR. The voltage at bus 3 is 105 kV. 1) Draw the one-line diagram for the system. 2) Draw the per-unit, per phase…
Which of the following statements about next-generation wind energy is correct? a. They will have a lower capacity factor than current wind energy. b. Offshore wind energy will be much cheaper than onshore. c. Offshore wind has the potential for a higher capacity factor than onshore installations. d. Integrating offshore wind into existing grid infrastructure is easier than for onshore energy
A short transmission line connects a step-up transformer on the source side with a series impedance of j0.5 ohms (referred to the primary) to a step-down transformer on the load side with a series impedance of 50 ohms (referred to the primary). The turn ratio of the step-up transformer is 1:10 and a no-load primary voltage of 13.2 (line-to-line) kV. The step-down transformer has a turn ratio of 15:1 and it has a Y-connected, balanced load of 0.667 +j 0.111 ohms connected to its secondary side. A capacitor bank of -j0.239 ohms is added parallel to the load. Assuming an ideal transmission line, the load voltage (line-to-neutral) would be: A. 5118 V B. 6.2 kV C. 8865 V D. None of the other choices are correct E. 4225 V
The Y/Y connected 3-phase step-up transformer has a rating of 1200 MVA, operating at 33 kV/340 kV and 60 Hz. Its impedance is characterized solely by a reactance of 11.5 percent. Its purpose is to increase the voltage from a generating station in order to supply power to a 340 kV transmission line. Answer the following questions: a) Draw and determine the equivalent circuit of this transformer, per phase, in per-unit. b) Using the per-unit method, determine the generator terminal voltage when the high-voltage (HV) side of the transformer supplies 800 MVA at a power factor of 0.90 with a lagging angle, and the voltage is 360 kV. Hint: Select the nominal voltage as a base voltage, and the nominal power rating as a base power.
In the context of smart grids, how do advanced metering infrastructure (AMI) and demand response technologies enhance the efficiency of power systems?
Businessman Lance Smile own two large malls in Basilan Island. Both malls are connected in parallel and operating at an unknown voltage. The local utility system voltage is 13.8 kVrms and supplied power to the malls through a feeder line with impedance equal to 1+j2.5 ohms. Mall 1 is consuming 400 kW at 0.8 pf lagging while Mall 2 is consuming 300 KVAR at 0.75 pf lagging. Determine the following: a) The malls operating rms voltage. b) The total real and reactive power of the system. The overall pf of the system. C)
10. A three-phase transformer consists of a bank of single-phase transformers connected to form a Dd0 connection. A fault on one of the transformers causes it to be removed from the circuit, and the remaining two transformers are connected in an open-delta (V-V) connection. Show that the capacity of the open-delta connected transformers is 58% of the delta-connected transformers.