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- Characteristics of 165 kV, 150 MVA, 50 Hz 3-phase 100 km transmission linevalues are given below. r=0.103ohm/ kmx=0.525ohm/ kmy=3.3x10^-6 S/ km (a) Calculate the constants A and B for the equivalent circuit of this transmission line,(b) Load lagging power factor of 0.9 when the line is running at nominal (tag) value.if so, find the production side voltage. lesson: Power system analysesA three-phase overhead line has a load of 30MW, the line voltage is 33kV and power factor is 0.85 lagging. The receiving end has a synchronous compensator, 33kV is maintained at both ends of the line. (i)Calculate the MVAr of the compensator given that the line resistance is 6.5Ω per phase and inductance reactance is 39Ωper phase. (ii)Repeat your calculation using the short-circuit current at node method. Compare and explain the difference between the results.An overhead 3-phase transmission line delivers 1200KW at 22KV at 0.8 power factor lagging. The length of the line is 25 Km . The resistance and reactance of conductor are 0.25ohm per Km and 0.30ohm per Km. Determine: 1) Sending end voltage 2) Percentage regulations 3) Sending end power factor 4) Transmission efficiency
- A 3 phase, overhead transmission line has a total series impedance per phase of 200ohms and a total shunt admittance of 0.0013 siemens per phase. The line delivers aload of 80 MW at a 0.8 pf lagging and 220 kV between the lines. Determine the sendingend line voltage and current by Rigorous method.2. Obtain the symmetrical components of a set of unbalanced currents:IA = 1.6 ∠25IB = 1.0 ∠180IC = 0.9 ∠1323. Given V0 = 3.5 ∠122, V1 = 5.0 ∠ − 10, V2 = 1.9 ∠92, find the phase sequencecomponents VA, VB and VC.Please do not Copy From Other Source and Give Answer in Hand written properly i give upvote. A 60 km long transmission line supplies a load of 6 MVA at 0.8 pf lagging at 33 kV, with a transmission efficiency of 88%. The volume of aluminium conductor required for the line in the cases of single phase two wire system will be calculate.An overhead 1 phase transmission line delivers 1100kW at 33kV at 0.8 pf lagging. The resistance and reactance of each conductor is 10 ohms and 15 ohms respectively. Detemine: i. Sending End Voltage ii. Sending End Power Factor. iii. Recerving End Power Factor. iv. Regulation in Percentage v. Transmission Line Efficiency
- Problem 5. An 11 kV, 3-phase transmission line has a resistance of 1·5 Ω and reactance of 4 Ω per phase. Calculate the percentage regulation and efficiency of the line when a total load of 5000 kVA at 0.8 lagging power factor is supplied at 11 kV at the distant end.A 25 kilometer long three phase transmission line has conductors 2.5cm in diameter and are separated by a distance of 2 meter. The resistance of the line is 4 Ω and it delivers 15MW at 33kV, 0.7 power factor lagging. Estimate i. Inductive reactance ii. Sending end voltage iii. Voltage regulation iv. Transmission line efficiencyA three-phase 138-kV transmission line is connected to a 49-MW load at a 0.85 lagging power factor. The line constants of the 52-mi-long line are Z = 95∠78° Ω and Y = 0.001∠90° S. Using nominal-T circuit representation, (i) Calculate the A, B, C, and D constants of the line, (ii) send end voltage
- Calculate the branch currents of the given network below using Maxwell Mesh MethodA 20km overhead 3-phase transmission line delivers 5500 kVA at 22 kV at 0.7 lagging. The resistance and inductive reactance of each conductor is 0.25 ohms and 0.35 ohms per kilometer respectively. Determine: i) line Current ii. sending end voltage iii) percentage regulation iv) transmission efficiencyAn overhead 3-phase transmission line delivers 1200 kW at 22 kV at 0.8 power factor lagging. The length of the line is 25 km. The resistance and reactance of conductor are 0.25 Ω per km and 0.30 Ω per km. Determine, i) Sending end voltage ii) Percentage regulation iii) Sending end power factor iv) Transmission efficiency