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I haven't used PSS/E for years, but if I remember correctly, .SLD files were not used until more recent versions (maybe rev. 28/29?). In rev. 26 and other old versions, text files (.DRW files) were used to drive the program's graphics interface. It was a bit crude, but it worked. As for...

RUS Bulletin 1724E-214 (starting on page A-13) has a nice discussion on weathering vs. galvanized steel.

andrew... It really just sounds to me like you have a poorly conditioned powerflow model (which isn't entirely uncommon in large regional models nowadays). Does it have problems solving even with small (or no) disturbances? I've seen cases that, even from a solved state, when re-solved, take...

andrew... I find it hard to believe you'd see such behavior physically, so I'm assuming that you're describing the behavior of a powerflow model. As such, I think you've answered your own question... the powerflow did not converge well. Sometimes you'll see odd solutions like that in poorly...

Here's the questions that this thread leads me to consider that I find most interesting and personally enlightening: -- Why do humans seem to have an innate sense of right and wrong at all? -- Why does that sense of right and wrong seem to be so very similar amongst both the religious and...

ivymike, I don't know about "magical fairies", but yes... most religious faiths hold that humans have a spirit of some sort that lives on past this life, and that actions in this life will be rewarded / punished in the hereafter. Given that the hereafter would seem to last much longer than the...

Values, beliefs, principles... when talking about the foundation of a code of ethics, these words can all be used interchangably (at least in my opinion). Sounds like my disagreement may simply be a matter of semantics.

Ah, but to conduct oneself in accordance with an ethical system, isn't it generally beneficial (if not essential) to agree with the values / beliefs upon which the ethical system is founded? If you believe strongly enough to the contrary, your ethical system will differ, and thus your conduct...

Two things, one to the engineering side, one to the business side: -- Murphy was an optimist. -- Dilbert is real. While engineering is serious business, if you can't find humor in the unexpected failures, the frustrations of management, etc., you're eventually going to hit the wall of burnout.

At the risk of being off-topic, I just wanted to state and re-emphasize that I don't agree with a large number of things in the Crichton link. My intent in posting the link was not to offend anyone's religious beliefs (he offended mine, to be honest), but merely to offer an article that, as...

Although I don't agree with everything he says, Michael Crichton had an interesting take on environmentalism as a whole, which seems to be quite applicable to this discussion: http://www.perc.org/publications/articles/Crichtonspeech.php The point, of course, is that facts don't necessarily...

Try http://www.kilowattclassroom.com/Archive/DevNos.pdf.

Try the following: http://www.ncees.org http://www.nspe.org http://www.ppi2pass.com Not sure if there are online courses or not offered through these sites, but there are definitely good study materials.

In addition to simply ensuring your arresters are properly sized, I would not use air-gap arresters in the future. My understanding is that weathering tends to allow contamination of the air-gap to occur over time, reducing the breakdown voltage of the gap and allowing the arrester to operate...

Here's a thought -- Do you really want your most technically competent individuals out of positions where they are most effective? I'm not saying managers in general are less competent, but rather this -- given the choice between moving the best engineer to management (where his/her skills are...

How far can you take this line of thinking though? Seriously, how far? Example... I work for an electric utility (GASP!). The electricity we produce comes from power plants (coal, natural gas, etc.), which release certain gases which, based on whose research you read and believe, cause global...

Just noticed that my link to amazon.com isn't working. Just search amazon for "protective relaying" to get the list to which I attempted to link.

See: http://www.geindustrial.com/industrialsystems/pm/notes/artsci/index.htm http://www.selinc.com/sel-lit.htm http://standards.ieee.org/catalog/olis/relaying.html etc. There are a multitude of books available as well: http://www.amazon.com/exec/obidos/search-handle-form/103-4929287-2773451...

NERC also has information available on their website supporting the findings of the joint investigation. See: http://www.nerc.com/~filez/blackout.html for more.

The U.S. - Canada Power System Outage Task Force released its interim report on the August 14th Northeast Blackout today. See http://www.energy.gov for more information.