On a similar note to a previous posting regarding faults and short-circuits another question was discussed regarding what constitutes a “stiff” source of fault current. Again opinions and thoughts were divided as were the responses.
Some defined a ‘stiff” source in terms of bus voltage and...
This is a somewhat of a philosophical or at least subjective question, but I would appreciate some other thoughts and opinions on the topic. I recently had discussion and debate with some fellow power engineers on the topic of whether a “fault” is the same as a “short-circuit” and the answers...
Presently I performing post event fault analysis of the following situation and would appreciate input in trying clarify the concepts of phase voltages with one open phase.
The situation is as follows:
Customer has a facility that is served by incoming utility services both from transformers...
I would appreciate others feedback on the following situation.
A customer of mine has one phase cable in a 5kV duct bank approximately 600' in length with parallel runs that has gone bad and needs to be replaced. The cable is 2250 kCmil Al and approximately 40 years old. Due to age of the...
The final report of the investigation into the NE blackout of last summer has been completed and just released. It is available at www.nerc.com In the report it says the blackout was preventable and lays the most of the blame on First Energy of Ohio. I would be interested in hearing what others...
Hello,
I would appreciate any feedback or reviews that anyone could provide on the Westinghouse T&D book. I know the Westinghouse version is no longer in print, but it is now being published by ABB instead and available from them. It has long been a standard industry reference for power...
I would like to start a new thread and get some feedback and information on a topic that was previously discussed in this forum. The topic was on fault calculations using what is known as the MVA method.
Apparently there was paper written by Moon H Yuen, but unfortunately after searching I...
