Suppose a power system consists of two isolated regions: a western region and an eastern region. Five units have been committed to supply 3090 MW as shown below. The two systems are separated by a transmission line that can handle a maximum transfer of 550 MW in either direction. Unit 1 550 MW Unit 4 Unit 2 Unit 5 Unit 3 Western Region Eastern Region 1450 MW 1640 MW Unit 1: 1000 MW Unit 4: 1200 MW Unit 2: 800 MW Unit 5: 600 MW Unit 3: 800 MW

Suppose a power system consists of two isolated regions: a western region and an eastern region. Five units have been committed to supply 3090 MW as shown below. The two systems are separated by a transmission line that can handle a maximum transfer of 550 MW in either direction. Unit 1 550 MW Unit 4 Unit 2 Unit 5 Unit 3 Western Region Eastern Region 1450 MW 1640 MW Unit 1: 1000 MW Unit 4: 1200 MW Unit 2: 800 MW Unit 5: 600 MW Unit 3: 800 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

Chapter6: Power Flows

Section: Chapter Questions

Problem 6.61P

See similar textbooks

Similar questions

The circuit shows an unbalanced electrical installation powered by a positive sequence symmetrical three-phase network of 380 V compound voltage. The loads are single phase. Load 1 absorbs an active power of 950 W with f.d.p. 0.5 inductive. Load 2 absorbs an active power of 1,140 W with f.d.p. Unit. Load 3 absorbs from the network an active power of 760 W with f.d.p. 0.5 capacitive. Taking the network voltage URN as the phase reference, calculate: a) complex expressions of the line currents IR. Is. and IT
The circuit shows an unbalanced electrical installation powered by a positive sequence symmetrical three- phase network of 380 V compound voltage. The loads are single phase. Load 1 absorbs an active power of 950 W with f.d.p. 0.5 inductive. Load 2 absorbs an active power of 1,140 W with f.d.p. Unit. Load 3 absorbs from the network an active power of 760 W with f.d.p. 0.5 capacitive. Taking the network voltage URN as the phase reference, calculate: a) complex expressions of the line currents IR. Is. and IT RO- SO TO IR Is IT U₁-380 V CARGA 1 P₁ =950 W cos p1=0,5 ind. CARGA 2 P₂=1.140 W cos p₂=1 CARGA 3 P3=760 W cos p3=0,5 cap.
What is the max load demand of the following feeders 4152 MW, 2.891 MW, 815.20 KW, 905.12 KWand 1.972 MW A) 10,735.32 KW B) 12,815.32 KW C) 10,571 MW D) 12.052 MW
2. Two transformes A and B of ratings 5uokVA and 25okVA. Supplying a load kVA of 750 ato.8Pf lagging. open circunt valtajes are 400V and 410v respectively. Trusfarmn A has 1/ nsistance and 5/ ractance and traugformer B hay 1.$, mesistona and 41 reactance. Find (^) Crossacarent in the seandaries on no.load.ib) the load shared by euch transfarmer Their are
H* 3G zain IQ Asiacell The generator convert from PV to PQ if the active power of the generator exceed the * maxinum and minimum limits between the maximum and mimium limit equal to the load power Non of them With base voltage of 450 kV. The actual voltage of the generator is 560 kV. The magnitude voltage in the parameter of the PV generator in the nepaln software is * O 1.2444 pu O 450 kV O 124.44 % O 0.8036 pu 80.36 % Non of them
In the circuit in the figure; L1 load draws 15 kVA with lagging power factor 0.6. The L2 load draws 6 kVA with a leading power factor of 0.8. According to this; What is the value of the complex power for the L2 load?
In load bus, the real and reactive power are specified. Select one: True False
A workshop from a 231/400 V transformer center with a 3-phase and four-conductor underground cablefed. The resistance of the phase conductors is 0.035 ohms and the resistance of the neutral conductors is 0.05 ohms.25 kVA at 0.8 reverse power factor from R phase of the supply line, 0.8 forward power factor from S phase 15Fully ohmic loads of 10 kVA are drawn from kVA and T phases.(a) Find the currents flowing through the phase conductors and neutral conductors.(b) Voltage drops between the transformer substation and the workshop and at the load terminals.calculate the voltages(c) Plot the supply line currents and phase voltages phasorally.
The instantaneous power absorbed by the load in a single-phase ac circuit, for a general R LC load under sinusoidal-steady-state excitation. is (a) Nonzero constant (b) Zero (c) Containing double-frequency components
Three single-phase transformers, each rated 10MVA,66.4/12.5kV,60Hz, with an equivalent series reactance of 0.1 per unit divided equally between primary and secondary, are connected in a three-phase bank. The high-voltage windings are V-connected and their terminals are directly connected to a 115-kV three-phase bus. The secondary terminals are all shorted together. Find the currents entering the high-voltage terminals and leaving the low-voltage terminals if the low-voltage windings are (a) Y-connected and (b) - connected.
The units of admittance, conductance, and susceptance are siemens. (a) True (b) False
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 = 0.8 pu on a base of 1500 MVA Area 2: R2 = 0.03 pu and D2 = 0.9 pu on a base of 500 MVA The power flow direction on the tie line is from Area 1 to Area 2. Using a common base of 1500 MVA, what is the per-unit steady-state frequency change (Aw) for a load increase of 150 MW in Area 1? Select one: O a. 1.4822 x 10-³ pu O b. - 0.8763 x 10-² pu O c. None of these O d. - 1.2677 x 10-³ pu