Protective Relaying, 4th Edition

Chapter 17

Problems

These practical problems, developed over many years from actual experience, provide the opportunity to apply the material in the book by practicing the basic techniques. Problems involving application choices are generally so subjective that I have avoided them whenever possible. Each problem has a message to be unlocked with a reasonable minimum of labor—that is, with a good RH factor, where R denotes relative minimum labor and H denotes high educational value.

Chapter 2

1. 2.1 A wye-connected generator has a nameplate rating of 200 MVA, 20 kV, and its subtransient reactance (${X^{″}}_{\text{d}}$ ) is 1.2 pu. Determine its reactance in ohms.
2. 2.2 The generator of Problem 2.1 is connected in a power system where the base is specified as 100 ...