+ IMG_4551.jpg 目 : 13 The average real power delivered to the load impedance ZL = 30 Q in the two port network shown below is .W: (The voltage given is in RMS) %3D 20 Ω I2 + Z11 = 40 Q Z12 = 60 2 50/0° V V2 V1 Z21 = 80 2 Z22 = 100 2 60
Q: The average real power delivered to the load impedance ZL = 30 Q in the two port network shown below…
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Q: Example 1: n the power system shown, bus 1 is a slack bus with V, = 1Z0° per unit and %3D us 2 is a…
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A: The average power delivered across ZL is found below:
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Q: 1. The load flow data for the sample power system are given below. The voltage magnitude at bus 2 is…
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- S.2) The serial impedance of the 300 km power transmission line is 23 + j75 ohm / phase and the shunt acceptance is j500 microS / phase. A power of 50 MW with a power factor of 0.88 under 220 kV interphase voltage from the end of the power transmission line being shot. Using these data of the energy transmission line, a) Characteristic impedance of the energy transmission line, b) Natural apparent power of the energy transmission line according to the 220 kV interphase operating voltage, c) The values of the line parameters A, B, C and D of the transmission line using hyperbolic functions, d) Calculate the maximum power that the power transmission line can transmit.A transmission line with 50 ohm characteristic impedance feeds the ZL = 100 ohm load with a compatible 10 V power supply. For the case where the line is 2.3lambda long and has an attenuation constant a = 0.5 db / lambda, calculate the forces transferred by the source, lost on the line and transferred to the load.The network shown in Fig. P10.18 consists of a balanced 120 V (rms) Y-source connected in a positive phase se-quence, lossless transmission lines, and an unbalanced Δ(delta)-load with Zab = 14Ω(ohm), Zbc = (6 - j2)Ω(ohm), and Zca = (24 + j6)Ω(ohm). Assign V1 a phase angle of 0°.
- How do distributed energy resources (DERs) such as solar panels and wind turbines impact the operation and planning of power systems? Analyze their integration challenges.4 Sinusoidal voltage source of us(t) = [100 cos ωt]V , (ω = 20Mrad s ) voltage is connected to the input of a transmission line of h = 10m length. The wawe parameters of the line and the impedance of the loading two-pole connected to the output at ω angular frequency are: Z0 = (49, 5 - j2)Ω, γ = (0, 5 + j40)km-1, and Z2 = Z0. Find the voltage amplitude at the nearest point to the source where the voltage phase angle is 0! a) U = 100V b) U = 92, 4V c) U = 36, 8V d) U = 50VIn the circuit given below, Ra=Rb=Rc=9 ohm loads are fed with an AC voltage with a fundamental frequency of f=30Hz. The power value drawn from the source was measured as PK=5512.50 watts. Each switching element is triggered to be 120 degrees conduction. Calculate the effective values of the voltage Vab and the current flowing through the S1 switching element Vab_rms=, Ls1_rms?
- Consider an ac network with an ideal transformer (with turns ratio of n:1) shown below where ZL=(1+j0) is the load impedance and Zs=(7−j24). Ideal transformer turns ratio n is chosen so that the average power delivered to the load is maximized. Under this scenario, the average power delivered to the load is given bya) You have been employed as an electrical engineer by a power transmission company to design a short transmission line to supply power to a light-industrial load consumer with power system specification as follows, a 3-ph, 60Hz overhead short transmission line with a line-to-line voltage of 23KV at the load end, line impedance of 2.48 ±j6.57Ω/phase, the industry has a cumulative consumption of 9MW with a power factor of 0.85 of lagging as a result of several induction motor on its production lines.As part of the regulations for connections to the grid, you are to provide justifications and values to the Energy Commission of Ghana.(i) What would be value of the voltage between the live conductor and the neutral, between live and live voltages at the industrial premises of the factory?(ii) What load angle would expect the factory to be operating at?If the values of real power and reactive power is specified for a bus, then it is called as PQ bus. Select one: True False
- A Z0 = 50 Ω transmission line of length l = 4.25 m (with dielectric material with parameters εr= 4, µr = 1) is attached to a time-harmonic generator (V0rms = 30 V, Rg = 20 Ωf = 75 MHz). The line is terminated with a load ZL = 100 + j50 Ω.Write Matlab (or similar high level language) code to find the complex instantaneous voltagesand currents along the line and time averaged losses in the load and generator. Use this codeto make a movie of the instantaneous total voltage and current along the line, and plot thecomplex voltage and current for the line in the following two cases:a) Assume the line is losslessb) Assume the line has a small loss equivalent to R’ = 1.2 Ω/m please solve part bA transformer has a ratio of 4:1. The high voltage side is connected to a 240 Vrms source. The low voltage side (secondary) is connected to an impedance ZL = 20 + j10 Ω.a. What is the value of the load impedance when referred to the primary?b. (in A rms) What is the current out of the source?For a current of r.m.s. value 5 A, and frequency 2 kHz, write down the standard expression. Hence, calculate: (a) the instantaneous value 150 μs after it passes through zero, and