Question

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?

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
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....
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...
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...
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...
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)
An Australian (50HZ) power transmission line is designed to deliver 100 MVA at 6.6 kV over...
An Australian (50HZ) power transmission line is designed to deliver 100 MVA at 6.6 kV over a distance of 100 km. The total transmission line loss is not to exceed 2.5% of the rated line MVA. The magnitude of the leakage current due to the capacitive effect is 0.291 A. In this transmission system, you need to reduce this capacitive effect at least by 50%. In this situation, what type of compensation do you need? At the same time, you...
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...
•The 3-phase system consists of a generator, circuit breaker, power transformer and extra high voltage transmission...
•The 3-phase system consists of a generator, circuit breaker, power transformer and extra high voltage transmission line. •The generator is rated at 60Hz, 1559Mva and 24kV. The sub-transient reactance is 2*%. The winding connection is wye with the neutral grounded. •The transformer is a 1550Mva, 3-phase, shell type, 2-winding transformer with a 24kV delta winding and a 525kV grounded wye winding. Neglect saturation and core losses. The exciting current is 1.0% of the rated current. The capacitance of each low...
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 small manufacturing plant is located 2 km down a transmission line, which has a series...
A small manufacturing plant is located 2 km down a transmission line, which has a series reactance of 0.5 ?/km. The line resistance is negligible. The line voltage in the plant is 480?0 V and the plant consumes 120 kW at 0.85 power factor lagging. • Determine the voltage and power factor at the sending end of the transmission line. • Find the parallel capacitor bank in kVAr that enhance the power factor to unity. Assume the plant voltage is...