generation station of 1MW supplied
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- Tam responsible for any violations with regard to this. A load of 135 MW at a power factor of 0.65 lagging can be delivered by a 3-phase transmission line. The voltage at the receiving end is to be maintained at 54 kV and the loss in the of transmission is 6 % of the power delivered. (Consider the line to be a short transmission line) Find ion Single phase Power delivered Per phase voltage snt fleiDevelop a small-scale equivalent transmission line pi model (per phase) of the transmission lines with the specification given in table 1. The conductors are placed with a flat horizontal spacing of 7.25 meters. Consider that the load connected against the line 125MW at 0.85 lagging power factor. You are required to develop an equivalent model for a maximum 220V (RMS) sending and receiving end voltage and a maximum of 5A load current. Sr. NTDC Transmission Line Length Conductor No. Туре 220 kV DG Khan-Loralai Transmission Line (227 km) 227km Pheasant TABLE AJ Electrical characteristics of bare aluminum conductors steel-relnforced (ACSR)+ Reniertance Reactance per conductor 1-ft apacing. 60 Ha Ae, 60 Ha Capaitive Aluminum ares, emil Layers of Outaide aluminum diameter, in a/1,000 ft soC, D/ml GMR Induetive Stranding AL/8t De, 20°C. 20C, a/mi Code word D. t Ma-mi Waswing Partridge Ostrieh Merlin Linnet Oriole Chickndee Ibin Pelienn Flicker Hawk 266,800 206,800 300,000 336, 400 336.400…JQK! A: For a medium line model, draw the circle diagram only and put the value of you know that the 3-p line is supplying a load of 810 A with power factor voitage of 275 KV. While, the current and the voltage at the sending power factor of 0.83 and 240 KV per phase respectively. Note: torque angle is 24° OS and Ot. If OR, of 0.85 lagging side are 590 A lagging and with
- 7. In the circuit below write the loop equations and set up (not solve) the matrix equation for the load current. Wiso 150 75 28 100of stion 4 A single phase transmission line is delivering 450 kVA load at 12 kV. Its resistance is 4.5 2 and inductive reactance is 6 2. If the load power factor is 0.9 lagging. Determine the Current through the line Sending end voltage Sending end power factor Regulation of transmission line Efficiency of transmission line A load of 120 MW at a power factor of 0.8 lagging can be delivered by a 3-phase transmission line. The voltage at the intained at 33 kV and the loss in the transmission as 7.5 % of the power delivered. (ConsiderPROBLEM 1: a. Find the Real Power, Reactive Power and power factor characteristics of the load. b. Show the real and reactive power flow on each line, complete and separate, THREE-PHASE. Indicate the efficiency of line 2. c. Find the load node regulation. Assume the generator terminal voltage is kept constant.
- A two-area system connected by tie-line has the following parameters on a 1000 MVA common base Area The units are operating in parallel at the nominal frequency of 50 Hz. A load change of 200 MW occurs in area 1. Determine the new steady state frequency and the change in the tie-line flow?Q6/ The per-unit reactance for a given system are shown in figure below. (1 MVA) is being delivered to the receiving end bus of the system at unity power factor and unit voltage. A three phase short circuit occurs at F. Find the critical clearing angle and the critical clearing time? Take H = 3 p. u. second tc X=j0.3 j0.1 w Peralat j0.25 j0.25 V20 x 1What is load line and what is duty cycle?
- Consider the 500 kV, three phase bundled conductor line as shown in the figure below. Find the line to neutral capacitance. 0.5 m 30 mm (0) (O to Ine 15 m 15 mA 3-phase 11kv generator feeds power to upf load of 100mw through 3-phase transmission line. The line to line voltage is maintained constant at 11kv. The impedance of line based on 100mva and 11kv is j0.2pu. The line to line voltage at terminal is 11kv. Determine the total reactive power injected at the terminal of load to maintain the line voltage at 11kv.A system consists of four idenital 400 MVA generating units feed- ing a total load of 1016 MW. The intertia constant of each unit is 5 on 400 MVA base. The load changes by 1.5% for a 1% change in frequency. When there is sudden drop in load by 16 MW, obtain the power system time constant (T) with constants H and D expressed on 1600 MVA base.