Chapter 13: Q2CSQ (page 857)
Where are the surge arrestor located in the power system.
The surge arrestor are located in parallel with the equipment such that it provides the low resistance path to the overvoltage.
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For the circuit given in Problem 13.8, replace the circuit elements by their discrete-time equivalent circuits. Use and . Determine and show all resistance values on the discrete-time circuit. Write nodal equations for the discrete-time circuit, giving equations for all dependent sources. Then solve the nodal equations and determine the sending-and receiving-end voltages at the following times: and .
From the results of Example 13.2, plot the voltage and current profiles along the line at times , and . That is, plot and versus for ; then plot and versus .
As shown in Figure 13.33, two identical, single-phase, two-wire, lossless lines are connected in parallel at both the sending and receiving ends. Each line has a characteristic impedance, velocity of propagation, and line length. The source voltage at the sending end is a step with source impedance . The receiving end is shorted . Both lines are initially unenergized. (a) Determine the first forward traveling voltage waves that start at time and travel on each line toward the receiving end. (b) Determine the sending- and receiving-end voltage reflection coefficients in per-unit,
(c) Draw the Bewley lattice diagram for .
(d) Plot the voltage at the center of one line versus time for .
Rework Problem 13.3 if at the receiving end and the source voltage at the sending end is ,with an inductive source impedance . Both the line and source inductor are initially un-energized.
What is the largest loss-of-generation event in the U.S. Western Interconnection as recognized by the North America Electric Reliability Corporation?
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