| Spooks on the Power System |
A critique of Mr. Nailen's Spooks on the Power Line paper. Mr. Nailen was writing about the use of induction machines as co-generators on electric utility systems. His premise was that utilities fear these machines for unsound reasons. I believe he made some critical mistakes in his phasor diagram analysis of these machines as generators. My opinion is that he mixed two conventions for analyzing machines and got erroneous results. My critique is about Mr. Nailen's phasor diagram. |
| Warrington's Equations |
Warington's Equations were developed in the 1940's or early 50's as a means to predict how a distance relay will see different kinds of faults. In the summer of 1978, I was asked to go through the derivations for the phase distance relay equations to make sure the equations were based on the usual assumptions. |
| Transformer PU |
This is an attempt to sort out some of the problems associated with doing per unit calculations around transformers in a power system. |
| Impedance Volts |
Here is some information about the term "Impedance Volts." The term is used on large transformer specifications or nameplates. |
| Phasor Diagrams |
A very basic discussion of V, I, S, P, Q, and phasor diagrams. |
| Neutral Shift |
Here is one way to describe what causes a transformer neutral shift. |
| Nasty HW Problem |
Here is a nasty little home work problem about transformers. |