All transmission lines in the following system have impedance (0.05+ j0.5)22/mi . Each line is labeled with its length in miles. 1 3 4 5 R₁3 40 mi R34 50 mi 25 mi 25 mi 30 mi 2 Units R₁3, R34 are mho-type distance relays. (a) What are the three zone settings (in primary ohms) for R₁3 ? Express in polar form |Z| ≤0° with three significant digits. (b) What are the three zone settings (in primary ohms) for R34 ? Express polar form |Z|Z0° with three significant digits.

All transmission lines in the following system have impedance (0.05+ j0.5)22/mi . Each line is labeled with its length in miles. 1 3 4 5 R₁3 40 mi R34 50 mi 25 mi 25 mi 30 mi 2 Units R₁3, R34 are mho-type distance relays. (a) What are the three zone settings (in primary ohms) for R₁3 ? Express in polar form |Z| ≤0° with three significant digits. (b) What are the three zone settings (in primary ohms) for R34 ? Express polar form |Z|Z0° with three significant digits.

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

Chapter13: Transmission Lines: Transient Operation

Section: Chapter Questions

Problem 13.17P

See similar textbooks

Similar questions

A Three-Phase, 180 KV, 75 Hz Transmission Line consists of 1.2 cm radius conductors spaced at 2.4 meters apart in an equilateral triangular formation. If the Temperature is 40 ºC and Atmospheric Pressure is 76 cm of Hg, calculate the Corona Loss per km of the line. Take m0=0.8
Three phase, 260 kV, 50 Hz transmission line consists of 3.2 cm diameter conductor spaced 0.002 km apart in equilateral triangular formation. If the temperature is 35°C and atmospheric pressure is 76 cm, calculate the corona loss per km of the line. Assume mo =0-85.
A Three-Phase, 50 Hz, 220 KV Transmission Line consists of conductors of 1.2 cm radius spaced 2 meters at the corners of an equilateral triangle. Calculate the Corona Power Loss per km of the line at a Temperature of 20ºC and Barometric Pressure of 72.2 cm of Hg. Take the Surface Factor of the conductor as 0.96
Estimate the corona loss for a three-phase, 110 kV, 50 Hz, 150 km long transmission line consisting of three conductors each of 10 mm diameter and spaced 2.5 m apart in an equilateral triangle formation. The temperature of air is 40ºC and the atmospheric pressure is 750 mm of mercury. Take irregularity factor as 0.89. Ionization of air may be assumed to take place at a maximum voltage gradient of 30 kV/cm.
Estimate the corona loss for a 3-phase, 110 kV, 50 Hz, 150-km-long transmission line consisting of three conductors, each of 10 mm diameter and spaced 2.5 m apart in an equilateral triangle formation. The temperature of the air is 30oC and the atmospheric pressure is 750 mm of mercury. Take the irregularity factor as 0.85. Ionisation of the air may be assumed to take place at a max voltage gradient of 30 kV/cm.
)A 60-ohm distortionless transmission line has a capacitance of 0.15nF/m. The attenuation of the line 1.15*10-3 Np/m. Calculate: (i) The line parameter resistance, inductance and conductance per meter of the line, (ii) Voltage at a distance of 1Km and 4Km with respect to sending voltage.
. A 70 cm long lossless transmission line with characteristics impedance of 50 Ω operating at 5Mhz is terminated with a load of ?? = (65+j80) Ω. If the velocity is 0.8 times the velocity of light, then calculate (a) The reflection co-efficient, also verify the value using the given smith chart. (b) Compute the input impedance using the transmission line input impedance equation 50 Ω line is terminated with an impedance of ??= (90 – j120) Ω. Design a shortcircuited single stub matching circuit using Smith chart that is provided
A 300 km long 3-phase transmission line of 154 kV is operated at 60 Hz. The line is on average 1200 m above sea level and instead At 120m, an air outlet decreases by 10 mmHg. Sea free air the dose is 760 mmHg and the puncture strength of the air is 30 kV / cm As it is known, the roughness of the line is 0.89 for the average outdoor temperature of 34 oC, The distance between the conductors is 550 cm and the conductor cross section is 40mm. along the line by calculating the corona voltage and corona discharge voltage calculate the total corona loss that occurred.
A 50-ohm lossless transmission line has series inductance of 250 nH/m and shunt capacitance of 100 pF/m. What is the time delay per unit length (in ns/m) of this transmission line? Enter only the numerical value. No need for the unit. Use four decimal places (if the answer is not an interger).
PROBLEM SOLVING NO. 1: A Three-Phase, 75 KV, 50 Hz Transmission Line consists of 0.44 cm radius conductors spaced at 1.2 meters apart in an equilateral triangular formation. If the Temperature is 34°C and Atmospheric Pressure is 75 cm of Hg, calculate the Critical Disruptive Voltage at which Corona occurs. Take m0 = 0.83.
.A 3-phase, 220 k 50Hz transmission line consists of 1.5 cm radius conductor spaced 2 metres apart in equilateral triangular formation. If the temperature is 40°C and atmospheric pressure is 76 cm, calculate the corona loss per km of the line. Take m = 0.85
I want a solution for branches A and B, pleaseA) Determine the primary constants, R, L, G, and C for a distortion-less line working at 300 MHz. Given that the line has characteristic impedance, Zo=750, attenuation constant a=0.12Np/m, and wave velocity, v=1.4×10 m/sB) A lossless transmission line used in a TV receiver has a capacitance of 50 pF/m and an inductance of 200 nH/m. Find the characteristic impedance for sections of a line 10 meter long and 500 m long.