ACSS is really a fine choice. It is even better using trapezoidal wire. I appreciate what ACCC brings to the table but wow, why would you want to run a conductor that hot? Just because it performs thermally doesn't mean you won't have voltage issues, clamp issues, and terminal issues while...
Use the way back machine. Go to the following URL: http://web.archive.org/ and search www.ferc.gov archives before September 2001. The FERC 715 filings (i.e. power flow cases) are available from that time frame. Indeed, they are still available if you care to go through a small amount of...
What is the nature of the exciter loss? In other words, what do you expect the exciter to do when it stops working? Will exciter volts/amps fail as is? Will volt/amps fail high? Or will volts/amps fail to zero? Answer the previous question and you can then correctly model your exciter...
PDCI ground return operation is possible and does occur on rare occasions. It is NOT desirable and swift action is taken to cut PDCI path flows and fix the problem that caused blocking/ground return operations. Ground return works, but as one might imagine there is an unpredictable element...
Last I knew NERC HAS hired Power Engineers, but perhaps not the most nuanced in the way of relay speak it seems You can ask them what the heck they meant by the way. I do like the comment about the fault anticipator, lol. Where do you buy those at? It might be helpful if you could post the...
Does your breaker failure relay post a target or relay status change when it detects a breaker failure? This question is somewhat rhetorical since that is it's purpose, correct? Knowing NERC they are probably asking you if that breaker failure relay function is sent back as an alarm log in...
PowerWorld has been used as the primary power flow planning and operations tool by several utilities in the Pacific NW since around 2000. The utility I work for uses it in both operations and planning as the go to power flow tool. This year we are moving to it as the primary transient...
The PowerWorld transient stability tool has coded the GE and PTI transient stability models. To directly answer your question...yes, the standard type 1, 2, 3, and 4 wind models are in the code. Basically any PTI or GE model is, or will be in PowerWorld transient stability. Like any complex...
Agreed that Python is what PTI has chosen for automation these days.
However, do you HAVE to use the PTI PSDS4 software? If you have a choice you might want to give the transient stability package of PowerWorld Simulator a try. All of its "automation" for running multiple fault...
Low impedance transformers are typically preferred if your short circuit protection can interrupt short circuit currents. The utility I work for almost always specifies low impedance transformers and swaps out circuit breakers that aren't up to snuff for fault current. Keep in mind this is at...
You really will not find a single piece of software that will do everything you desire very well. You WILL find software that does do power flow, fault analysis, and transient stability. Those three functions are generally related enough that the same data set may be used (i.e. starting with...
Marmots seem to be a favorite where I work. They somehow get up on transformers or regulators and then try a experiment in conducting that usually ends badly for them. Raptors do their part as well. I remember a rattlesnake or two that got cooked a time or two. Throw in some high winds, ice...
Kinetic energy solutions are always the most feared. Bombs so to speak do a fine job of really wrecking things.
The Aurora science experiment is just that, an experiment. What they don't discuss in the report is how many times they tried the experiment before something notable happened...
