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Higher Study | Power Systems | Load Flow Studies

In load flow studies PV bus is treated as PQ bus when
The figure shows the per-phase representation of a phase-shifting transformer connected between buses 1 and 2, where α is a complex number with non-zero real and imaginary parts. For the given circuit Ybus and Zbus are bus admittance matrix and bus impedance matrix respectively, each of size 2 × 2. Which one of the following statements is true?
A three – bus network is shown in the figure below indicating the p.u. impedance of each element. The bus admittance matrix, Y-bus, of the network is
For load flow studies, what are the quantities specified at load bus?
In which type of bus the magnitude and the phase angle of the voltage are known?
Which of the following buses is also known as P-Q bus ?
Which one of the following matrices reveals the topology of the power system network?
Which of the following simultaneous equations is being involved in Load flow studies?
Which of the following buses are used to form bus admittance matrix for load flow analysis? 1. Load bus 2. Generator bus 3. Slack bus
In power flow analysis for a voltage-controlled bus, which of the following is the unknown quantity?
A load-flow program is run twice. In the second run, the previous reference bus gets changed to a PQ bus. Which one of the following statements is true?
In the figure, the voltages are v1(t) = 100 cos (ωt), v2(t) = 100 cos (ωt + π/18) and v3(t) = 100 cos (ωt + π/36). The circuit is in sinusoidal steady state, and R << ωL. P1, P2 and P3 are the average power outputs. Which one of the following statements is true?
Which load flow method is sensitive to initial guess in respect of reliability of convergence of solution?
Which among the following statement is true for a power system with lagging power factor?
Which of the following quantities are known on the generator bus?
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