Question

A 100 km long, three phase 50 hz transmission line has resistance per phase per km...

A 100 km long, three phase 50 hz transmission line has resistance per phase per km of 0.1 ohms, reactance per phase per km of 0.5 ohms, susceptance per phase per km of 10 x 10-6 siemens. If the line supplies a load of 20 MW at 0.9 pf lagging at 66 KV at the receiving end, calculate the regulation and efficiency of the line using the following assumptions:

a. nominal pi vector solution

b. nominal T vector solution

c. using end condenser method

d. using the ABCD constant of a long transmission line.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1- A 69-kV, three-phase short transmission line is 16 km long. The line has a per...
1- A 69-kV, three-phase short transmission line is 16 km long. The line has a per phase series impedance of 0.125 + j0.4375 ohm per km. Determine the sending end voltage, voltage regulation, the sending end power, and the transmission efficiency when the line delivers a. 70 MVA, 0.8 lagging power factor at 64 kV b. 120 MW, unity power factor at 64 kV 2-three-phase, completely transposed 345-kV, 200 km line has two 795,000- cmil 26/2 ACSR conductor per bundle...
1- 30-kV, three-phase transmission line has a per phase series impedance of z = 0.05+j0.45 ohm...
1- 30-kV, three-phase transmission line has a per phase series impedance of z = 0.05+j0.45 ohm per Km and a per phase shunt admittance of y = j3.4x10-6 siemens per km. The line is 80 km long. Using the nominal π model, determine a The transmission line ABCD constants. b Find the sending end voltage and current, voltage regulation, the sending end power and the transmission efficiency when the line delivers 1. 200 MVA, 0.8 lagging power factor at 220...
A 250 km , three- phase , 50 Hz transmission line is delivering 25 MVA at...
A 250 km , three- phase , 50 Hz transmission line is delivering 25 MVA at 0.8 lagging power factor to a balanced load at 132 KV ( line-line) . The conductor resistance is 0.11 ohm/km . The line inductance per phase is 1.24 mH/km and the line to neutral capacitance is given as 9.4 x 10 – 9 F/km. a ) find the nominal – Л representation. b) find the sending end voltage , VS by nominal – Л...
A 100 MVA, 13.2 kV three phase generator (G) having a synchronous reactance of 10% is...
A 100 MVA, 13.2 kV three phase generator (G) having a synchronous reactance of 10% is connected to a three phase Y-Y transformer T1 which feeds a 132 kV 10 miles transmission line having an impedance per phase of 2 + j5 ?/mile. At the receiving end of the transmission line is a Y-Y step down transformer T2. Three loads are connected to the secondary side of the transformer T2. Loads are as follows: Load#1 40 MVA at 0.8 pf...
a 200km, 300kv, 50Hz transmission line has a reactance of 0.4 ohms per km and a...
a 200km, 300kv, 50Hz transmission line has a reactance of 0.4 ohms per km and a distributed capacitance of 400000 ohms per km. Draw an equivalent circuit of the line per phase. Calculate the line current per phase at the sender end when the receiver is open. What is the reactive power supplied to the sender?
a) A three phase transformer rated at 30 MVA 10 kV(Δ)/1 kV(Y) is supplying a load...
a) A three phase transformer rated at 30 MVA 10 kV(Δ)/1 kV(Y) is supplying a load at the low voltage side. The load absorbs 5 MVA, 0.7 power factor lagging at line to line voltage 0.9 kV. The transformer has an equivalent reactance 0.05 Ω/phase. Assuming 10 MVA and 1 kV as base value, draw the per unit diagram for the system. Find the Line to Line voltage at the primary side of the transformer. b) A three-phase synchronous generator...
A 3-phase, 5 MVA, kV, 60 Hz synchronous machine has a synchronous reactance of 10 ohms...
A 3-phase, 5 MVA, kV, 60 Hz synchronous machine has a synchronous reactance of 10 ohms per phase. The machine is connected to kV, 60 Hz bus and is operated as synchronous condenser (synchronous motor at no-load condition) a. For normal excitation (excitation voltage terminal voltage), find the line current. Draw the phasor diagram b. If the excitation is increased to 150% of the normal excitation, find the line current and reactive power delivered or absorbed by the bus. Draw...
A 42 kVA three-phase synchronous generator with line voltage 4.16 kV at a frequency of 60...
A 42 kVA three-phase synchronous generator with line voltage 4.16 kV at a frequency of 60 Hz, is connected in star configuration. The generator has a winding whose armature resistance is 0.8 Ω and a synchronous reactance of 7.4 Ω, both per phase. Determine the voltage regulation when the power factor is 0.600 lagging.
1. A 7 kV 60 Hz single phase two-wire overhead line has Dove ACSR conductors with...
1. A 7 kV 60 Hz single phase two-wire overhead line has Dove ACSR conductors with 1 m horizontally between conductors. Calculate resistance , inductance ,and reactance. 2. A 12 kV 60 Hz three-phase three-wire overhead line has Drake ACSR conductors spaced 4 ft apart in an equilateral triangle. Calculate resistance , inductance ,and reactance . 3. A 230 kV, 60 Hz, three-phase transposed overhead transmission line has one ACSR 954 kcmil conductor per phase and flat horizontal spacing with...
4. A short three phase transmission line with length of 10km and the line impedance is...
4. A short three phase transmission line with length of 10km and the line impedance is given as 0.25 +j0.433 ohms per km per conductor. This line supplies a 237.6 KVAR of power at a 0.8 power factor leading. Compute for the regulation of this line. Also draw and label the corresponding phasor diagram. (20 pts)
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT
Active Questions
  • Use the given transformation to evaluate the integral. (x − 6y) dA, R where R is...
    asked 16 minutes ago
  • Which document is necessary in establishing outsourcing relationships with an application service provider (ASP)? Service Level...
    asked 25 minutes ago
  • In order to conduct a hypothesis test for the population proportion, you sample 450 observations that...
    asked 31 minutes ago
  • Doctor’s Order: Vancomycin 500mg tab i po q12h X 7 days Available: Vancomycin 500mg tablets What...
    asked 44 minutes ago
  • Calculate the ΔG∘rxn for the reaction using the following information. 4HNO3(g)+5N2H4(l)→7N2(g)+12H2O(l) ΔG∘f(HNO3(g)) = -73.5 kJ/mol; ΔG∘f(N2H4(l))...
    asked 45 minutes ago
  • Question 03: Saturn Shoes (Pvt.) Ltd manufacture multi-style fashion boots for the residents of Missouri. Leather...
    asked 47 minutes ago
  • A highway with a design speed of 100 km/hr is designed with a sag curve connecting...
    asked 59 minutes ago
  • Shift Registers can be used for serial/parallel interface applications. True or false?
    asked 1 hour ago
  • Scenario 1: To describe the instructors’ experience, the researcher records the year in which each instructor...
    asked 1 hour ago
  • develop a flowchart or pseudocode to check the prime numbers 1- below 100 what to do...
    asked 1 hour ago
  • Which of the following statements are true? I. The sampling distribution of ¯xx¯ has standard deviation...
    asked 1 hour ago
  • Which of the following methods of reporting cash flows provided by operating activities does the Financial...
    asked 1 hour ago