Please answer completely with accurate diagrams. The two generators shown in below (G1 and G2) are generating at 1 p.u. voltage.T,T2FG2ふみThe star points of G1 and the two transformers T1 and T2 are solidly earthed. The systemreactances are:Gl:X1 = 0.3, X2 = 0.2, and X0 = 0.05G2:X1 = 0.25, X2 = 0.15, and XO = 0.05T1:X1 = 0.12, X2 = 0.12, and XO = 0.12T2:X1 = 0.1, X2 = 0.1, and X0 = 0.1L1 and L2:X1 = X2 = 0.3, and X0 = 0.7All values are in p.u. on the same base.Calculate the current fed into a double line-to-ground fault at point F. Assume that the Blue andYellow phases are to be shorted at the fault point.Ans. IB = 4.09 + j2.45 pu, IY = -4.09 + j2.45 pu.

fault is at F fault type - double line to ground E =1 pu

The two generators shown in below (G1 and G2) are generating at 1 p.u. voltage. L, T2 F G2 The star points of Gl and the two transformers T1 and T2 are solidly earthed. The system reactances are: Gl: X1 = 0.3, X2 = 0.2, and X0 = 0.05 G2: X1 = 0.25, X2 = 0.15, and X0 = 0.05 T1: X1 = 0.12, X2 = 0.12, and XO = 0.12 T2: X1 = 0.1, X2 = 0.1, and X0 = 0.1 L1 and L2: X1 = X2 = 0.3, and X0 = 0.7 All values are in p.u. on the same base. Calculate the current fed into a double line-to-ground fault at point F. Assume that the Blue and Yellow phases are to be shorted at the fault point.

The two generators shown in below (G1 and G2) are generating at 1 p.u. voltage. L, T2 F G2 The star points of Gl and the two transformers T1 and T2 are solidly earthed. The system reactances are: Gl: X1 = 0.3, X2 = 0.2, and X0 = 0.05 G2: X1 = 0.25, X2 = 0.15, and X0 = 0.05 T1: X1 = 0.12, X2 = 0.12, and XO = 0.12 T2: X1 = 0.1, X2 = 0.1, and X0 = 0.1 L1 and L2: X1 = X2 = 0.3, and X0 = 0.7 All values are in p.u. on the same base. Calculate the current fed into a double line-to-ground fault at point F. Assume that the Blue and Yellow phases are to be shorted at the fault point.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter6: Power Flows

Section: Chapter Questions

Problem 6.61P

See similar textbooks

Similar questions

⦁ Does transformers work on DC? Justify your answer.
A gantry crane of weight W=100 Kg moves across a bridge with the length /=5 m. The front axle of the crane (which is nearer end A) carries 3/4W whereas the rear axle (nearer end B) carries 1/4 W. The distance of the axles is b = 1/20. Determine the maximum value of the bending moment and enter your answer in N-m units.. Remember to also show all your work (FBDs, calculation steps, etc on the handworked file) HINT: Determine the shear and bending moment equations along the beam. Assume only concentrated loads at the front and rear axles. So it’s wrong answer 1136 N can anyone how to solve for it different ?
A circuit is constructed with an AC generator, a resistor, capacitor and inductor as shown. The generator voltage varies in time as ε = Va - Vb = εmsinωt, where εm = 120 V and ω = 429 radians/second. The values for the remaining circuit components are: R = 61 Ω, C = 426 μF. The value for L is unkown. What is known is that the voltage across the generator leads the current in the circuit by φ = 48 degrees. 1) What is t1, the first time after t = 0 when the magnitude of the voltage across the inductor is maximum? 4) What is VL,max, the magnitude of the maximum voltage across the inductor? 5) What is VL = Vb - Vc, the voltage across the inductor, at time t = 0? Note that VL is a signed number.
The numerical values of the voltages and currents in theinterconnection seen in P1.31 are given in Table P1.31. Does theinterconnection satisfy the power check?
Answer the following points in detail and rigorously. Instead of resorting to formulas, develop from basic principles (laws of voltages and currents, definition of electrical power, properties of phasors, among others). d) Show that the complex power consumed by two elements in parallel is the sum of the individual complex powers. Then repeat the procedure but for two elements in series. e) What meaning would you give to the P consumed by an element? Which to Q?
Answer the following points in detail and rigorously. Instead of resorting to formulas, develop from basic principles (laws of voltages and currents, definition of electrical power, properties of phasors, among others). a) Show that the complex power consumed by two elements in parallel is the sum of the individual complex powers. Then repeat the procedure but for two elements in series. b What meaning would you give to the P consumed by an element? Which to Q? c) Suppose you know P and Q for a two-terminal element. What is the power factor of this element? When would you be ahead and when would you be behind? d) Suppose you know the equivalent resistance R and the equivalent reactance X of a two-terminal passive network. What is the power factor of this network? When would you be ahead and when would you be behind?
You are given five light bulbs designed to operate on 160 mA current at 3.0 V (rms values), arid want to connect them in parallel, through an ideal transformer, to 120 V rms AC household power. a) Draw a circuit diagram showing the AC power source (a generator symbol ), the transformer, and resistors for the light bulbs. b) Is the required transformer step-up or step-down? What turns ratio N5/N is needed? e) Calculate the ruts current through both the primary and secondary coils of the trans former, in mA.
a) A sudden electrical surge is known to cause a nearly one-second-long power spike in an electrical system. The behaviour of the system during the spike has been studied, and during that event the power (in kW) is modelled as: P(t) = sin(t) - t5 i) Determine the maximum power that the system must be designed, in order to handle the electrical surge, to a relative error of 0.01%. ii) After how many iterations will the methid converge. b) Perform 3 steps of the secant method for the function f(x) = x2 - 2, starting with x-1 = 0 and x0 = 1
Q-1: Give brief answer to the following: (Answer Ten only)1) what is the potential transformer used for in power substation?2) what is process leads to lowering the number of free electrons?3) what is The Townsend’s Criterion4) why Sulphur Hexafluorid has good insulation strength?5) What is Intrinsic Breakdown6) why do bubbles lead to breakdown of liquid?7) how to decease the ripple voltage of cockroft-walton voltage multiplier circuit8) how much the maximum charging current of A Van de Graaff generator has a beltwidth 1 m, a belt speed of 4 m/s, and charge density of 10 c/m29) Why does need for Reactive Power Compensation in test transformer?10) The output voltage of series resonant circuit is given by the formula _________11) what is impulse voltage and what is its standard wave shape?12) Which advice can measure impulse voltage?
. A system consists of two plants connected by a tie and a load is located at plant two. When 100MW are transmitted from plant one a loss of 10MW takes place on the T-line . Determine the generating schedule at both the plant and the power received by the load when λ for the system is GHC 25 per megawatt hour and the incremental fuel cost are given by the equation dF1dP1=0.031P1 + 17 GHC/ MWh ; dF2dP2=0.06P2 + 19 GHC/MWh
Solve for the currents I1, I2 and I3. Use KVL and KCL to derive the equations and use Gauss-Jordan Elimination to solve for the unknowns.
In the circuit in the figure, there is a load formed by connecting the resistor R0 between the terminals a and b and the inductance L0 in series. The amplitude of the voltage Vs (t) is √2 150 volts, the phase angle θs = 0 degrees, the period is T = 200π microseconds. Since R = 300OHM and C = 1 microFa) If the load phase angle is constant θL = 60 degrees, find the values of R0 and L0 that enable the load to draw the maximum average power from the circuit.b) Calculate the average power on the load.