While designing the distribution to locality of one lac population with medium dense load requirement, we can employ ___________ a) radial system b) parallel system c) ring main system d) any of the mentioned
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While designing the distribution to locality of one lac population with medium dense load requirement, we can employ ___________
a) radial system
b) parallel system
c) ring main system
d) any of the mentioned
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Solved in 2 steps
- please solve for nodal stress method. (if it is possible to apply supernodes)To qualify system stability, we use: a. Routh criterion b. Phase margin c. Gain and phase margin d. Gain marginThe node (busbar) and branch (line) data of a power system are provided in Table Q1.1 and Table Q1.2 respectively. All values in the tables are stated in per unit (p.u.). i) Write the network incidence matrix. ii) Using node 1 (busbar 1) as the reference (slack bus), calculate the line flows using the DC power flow method.
- 1. FIGURE 52 shows the one-line diagram of a simple three-bus power system with generation at bus I. The voltage at bus l is V1 = 1.0L0° per unit. The scheduled loads on buses 2 and 3 are marked on the diagram. Line impedances are marked in per unit on a 100 MVA base. For the purpose of hand calculations, line resistances and line charging susceptances are neglected a) Using Gauss-Seidel method and initial estimates of Va 0)-1.0+)0 and V o)- ( 1.0 +j0, determine V2 and V3. Perform two iterations (b) If after several iterations the bus voltages converge to V20.90-j0.10 pu 0.95-70.05 pu determine the line flows and line losses and the slack bus real and reactive power. 2 400 MW 320 Mvar Slack 0.0125 0.05 300 MW 270 Mvar FIGURE 52Discuss the concept of power flow analysis in electrical grids and its role in maintaining system stability.4) State the relation between line and phase values of voltage and current for 3-pha se DELTA connected load .state the equation for active, reactive power consumed by 3-phase load.
- Each line of a 3-phase system given in figure is suspended by a string of 5 identical disks and the ratio of C1/C=0.1 (Shunt capacitance per self-capacitance) is given. If the string is connected to line of voltage 33kV. a) What is the voltage distribution over the unit of string and what is the string efficiency? b) When the string is supplied by a Guard Ring and this lead to add a two air capacitance of value 0.2C, 0.1C respectively to the nearest to the conductor. Find the new voltage distribution and the new efficiency.Considering two parallel three-phase circuits that are close together, when calculating the equivalent series- impedance and shunt-admittance matrices, mutual inductive and capacitive couplings between the two circuits can be neglected. a. True b. False5) Non minimum phase systems are also non causal. ) True False
- A three-phase overhead transmission line is being supported by three-disc suspension insulators; the potentials across the first and second insulator from the top are 8 kV and 11 kV respectively. Calcualte (1) the line voltage (ií) the ratio of capacitance between pin and earth to self capacitance of each unit (iií) the string efficiency..Discuss the reasons that make the load flow problem non-linear.A three phase symmetrical double circuit line is arranged in a horizontal plane as shown in figure below. Calculate and derive an expression for the transposed line for the inductance. Assume balanced equally distributed loads.