A single phase a.c. distributor AB 300 meters long is fed from end A and is loaded as under: (i) 100 A at 0-707 p.f. lagging 200 m from point A (ii) 200 A at 0-8 p.f. lagging 300 m from point A The load resistance and reactance of the distributor is 0-2 Q and 0-1 Q per kilometer. the total voltage drop in the distributor

A single phase a.c. distributor AB 300 meters long is fed from end A and is loaded as under: (i) 100 A at 0-707 p.f. lagging 200 m from point A (ii) 200 A at 0-8 p.f. lagging 300 m from point A The load resistance and reactance of the distributor is 0-2 Q and 0-1 Q per kilometer. the total voltage drop in the distributor

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

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.8P: A 60-Hz, single-phase two-wire overhead line has solid cylindrical copper conductors with a 1.5 cm...

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A 60-Hz, single-phase two-wire overhead line has solid cylindrical copper conductors with a 1.5 cm diameter. The conductors are arranged in a horizontal configuration with 0.5 m spacing. Calculate in mH/km (a) the inductance of each conductor due to internal flux linkages only, (b) the inductance of each conductor due to both internal and external flux linkages, and (c) the total inductance of the line.
• Zh = 100 ohm • Draw the pu reactance diagram by taking Ut(base) = 132kV, St(base) = 100MVA. If the 33 kV busbar voltage is kept constant at 30 kV and 0.8 inductive 50 MVA power is drawn from this bus, what is the voltage at the synchronous machine ends?
Given the circuit shown below, determine the current in each branch by: a. Nodal Method b. Maxwell’s Method
A 230 kV, 60 Hz, three-phase completely transposed overhead line has one ACSR 874.5-kcmil conductor per phase and flat horizontal phase spacing, with 8 m between adjacent conductors (refer Table A.4). Determine the inductance in H/m and the inductive reactance in Ω/km.
In a 380 kV three-phase transmission system, the diameter of the overhead lines in the form of cylinder conductors is 28 mm. a) How much distance should there be between two conductors using the maximum area calculation equations? Calculate. (Puncture peak strength of air is 30kV / cm.) b) In this configuration, if the distance between phase conductors is 4 m, at what voltage level Calculate the discharge occurs? c) Maximum electric field in the same configuration, for electrode distances to be 8 m Calculate the value. If needed in calculations Ꜫ0 = 8.854x10-12 F / m
The diameter of the overhead lines in the form of cylindrical conductors in a 380 kV three-phase transmission system is 28 mm.a) - How much distance should there be between two conductors using the maximum area calculation equations?Calculate. (Puncture peak strength of air is 30kV / cm.)b) - In this configuration, if the distance between phase conductors is 4m, at what voltage levelCalculate the discharge occurs?c) - Maximum electric field in the same configuration, for electrode distances to be 8mCalculate the value. If needed in calculations Ꜫ0 = 8.854x10-12 F / m)
The annual load duration curve of a power supply system may be considered as straight line from 40 MW to 8 MW. The load factor of the system is ?
Problem N. 7 Proposed. A 100 km long three km line is composed of 3 drivers Braided aluminum, one for each phase, with a diameter of 23.55 mm and a DS of 9,571 mm. The line has an asymmetric arrangement, where the distances between centers of the drivers are, 10m, 10 m and 16 meters, respectively. The temperature of the conductors can be assumed at 75 ° C. The CD resistance of drivers, at 20 ° C is 0.102 Ohms per km. Sample the complete single -line diagram of the line, with the corresponding OHMS values. Assume a skin effect of 3% and a system operating at 60 Hz.
three phase 60Hz, 120kV transmission line consisting of 3 conductors are placed at the corners of a triangle of sides 20, 15, and 8 meters. The radius of each line conductor is 1.5 cm. The length of the transmission line is 120 km. Assume epsilon subscript 0 equals 8.854 cross times 10 to the power of negative 12 end exponent. Determine a) Capacitance per phase per meter Answer for part 1 b)Capacitance per phase per km Answer for part 2 c) Total capacitance for 120 km Answer for part 3 d) Capacitance between the line (Cab) Answer for part 4 d) Capacitive reactance between the line( Xab) Answer for part 5 e) Charging Current for the 120 km
DISCUSS TEH ADVANTAGES AND DISADVANTAGES OF DIFFERENT TYPES COMPESATING EQUIPMENT TO TRANSMISSION SYSTEM eXPLAIN IN DETAILS
A 500 kV, 60 Hz uncompensated three-phase transmission line is 500 km long. The line has three ACSR 1113-kcmil (Finch) conductors per phase with parameters Current carrying capability of single ACSR 1113-kcmil (Finch) conductor is 1,110 A. Calculate the theoretical maximum (steady state stability limit) real power that this line can deliver and compare with the thermal limit of the line. Assume VS = VR = 1.0 per unit and unity power factor at the receiving end.
A single circuit 60 Hz transmission line. the conductors are Linnet type with flat horizontal spacing of 17.46 feet between conductors. Determine: (a) Assume that the line is short with a length of 50 miles, calculate the parameters of the line and draw the equivalent circuit. (b) Assume that the line is average with length of 150 miles (Pi-nominal model). draw the pi-nominal circuit for the transmission line and calculate its parameters (Z and Y/2 values, where Z is the series impedance of the transmission line and Y is the shunt admittance).