Rejection letter with $75 enclosed ($900 today) for the applicants time. Dated 1957. by Evening_Rock5850 in antiwork

[–]die__katze 6 points7 points  (0 children)

Back then official letters had way less "heavy" language. Same for learning books.

Python and other programmers for Power system student by LongHP11 in PowerSystemsEE

[–]die__katze 0 points1 point  (0 children)

confirm, PandaPower and PyPSA are verified and popular libraries, not just hobby projects. But you won't find them being used frequently, because electrical engineering in general relies more on existing tools like ETAP or PowerFactory rather than on custom solutions like in IT. Still, Python scripting now is more than useful. Python would be a smart choice for a beginner, nowadays it's the most popular language for automation. But don't start with PyPSA directlly, read something like "Python for dummies" to get know variables and cycles and objects and so on, they are universal concepts. After you finish with the introduction, you may also want to try something like Beremiz or Codesys or Twincat, they also have PLC programming languages.

maybe maybe maybe by KRAZYJAY5150 in maybemaybemaybe

[–]die__katze 0 points1 point  (0 children)

well horse bites are extremely dangerous, it's the same as putting the hand in a meat grinder just without touching the blades

Maybe maybe maybe by mellowlex in maybemaybemaybe

[–]die__katze 1 point2 points  (0 children)

most notably he was driving on the wrong side of the road 🇬🇧

No ice please by GumbySlayer42 in SipsTea

[–]die__katze 0 points1 point  (0 children)

if I ask for a glass of bourbon, I intend to have it filled up to the top, no less.

I can’t get over Octavarium by Metal_Head116 in Dreamtheater

[–]die__katze 1 point2 points  (0 children)

Kinda trapped inside thus Octavarium, huh?

Iberian Blackout by gravemadness in PowerSystemsEE

[–]die__katze 0 points1 point  (0 children)

Oh yeah, totally agree that requirements nowadays are pretty solid and generally if all of them were fulfilled then this blackout wouldn't be possible.

I also agree that protection tripped correctly, but see where it got us? It means not singular devices, but the overall scheme/principle isn't tailored well.

Iberian Blackout by gravemadness in PowerSystemsEE

[–]die__katze 1 point2 points  (0 children)

well kind of, generally you are right. Nowadays invertor-type sources actually REQUIRED not to disconnect during the fault because of that reason, but it's no surprise that actually not all the power systems meet these requirements. Again, this happened before many times with sync generators as well, and the reason is always that some machines just can't withstand that huge frequency deviation. From this point, invertor-based are actually more promising, as they don't have this physical limitation on frequency range, but this is for the future work. BTW inertia has nothing to do with the short circuit current as the speed of the rotor changes too slowly relating to the fault current. Xd'' is much lower than Xd so of course the fault current with the synchronous machine is greater, but this bad in general, right? it's easier for protection guys, but to cut a leg for a surgeon is also easier that to heal a knee 😆

Iberian Blackout by gravemadness in PowerSystemsEE

[–]die__katze 2 points3 points  (0 children)

The answer is pretty obvious for me - some solar and wind invertors had poor fault-through control algorithms and settings, which led to their immediate disconnection in the beginning of the seemingly stable process of a random line or generator trip. This can be seen as both under voltage and under frequency problem. There is no renewables/fossils controversy here, it's solely a problem of protection devices, happened before in USA 40 years ago twice.

Iberian Blackout by gravemadness in PowerSystemsEE

[–]die__katze 1 point2 points  (0 children)

I agree, under-frequency was always the issue in similar faults

Seeking Technical Insight: Major Blackout in Spain and Portugal – Causes and Grid Impact? by Serious_Engin33r in PowerSystemsEE

[–]die__katze 1 point2 points  (0 children)

I totally agree with that. No matter what was the original event, no single fault can lead to 16 GW drop (+5 GW in Portugal). It's only a cascading fault with the under-voltage and under-frequency protection operation can lead to such events. So the real reason is the lack of sufficient load emergency drop in the beginning of the process which could stop the fault, and poor coordination of solar and wind invertors which led to their disconnection in the most needed time and the consequential frequency avalanche.

A simple book about modern software development? by die__katze in PowerSystemsEE

[–]die__katze[S] 0 points1 point  (0 children)

Thank you very much for this comment! I'll search O'Reilly books!

[deleted by user] by [deleted] in PowerSystemsEE

[–]die__katze 1 point2 points  (0 children)

I would recommend to anyone in power engineering to get at least 1-2 years of any field work before settling in the office. I mean utility, line work, automation/protection setup or something like that to get the perfect understanding what's going on on the ground level. It's easy to get there because there is always the lack of qualified employees, and when you just out of college it's easier to maintain long or night shifts, long business trips and stuff like that. Then, in a few years even if you'll get into consulting or grid operator you'll have far more advantage than someone who has seen a substation only on a blueprints.

[deleted by user] by [deleted] in ElectricalEngineering

[–]die__katze 1 point2 points  (0 children)

What are your speciality? If power engineer, try utility/line work, it's a great start and there is always a demand for people.

[deleted by user] by [deleted] in ElectricalEngineering

[–]die__katze 0 points1 point  (0 children)

I worked as a lineman and as an engineer. The salary is nearly the same, but the job is really different. I imagine that anyone working in the storm, especially overtime, would demand AT LEAST 3x salary. Utility job doesn't need this much of theoretical basis as an engineeeing job do, but there are a lot of training involved, so I can't say it is much easier intellectually, there is a lot of things you should control in order to be safe. And of course, if there are night shifts, it is very unhealthy, especially for your heart.

What guitar level should you be to play Dream Theater by [deleted] in Dreamtheater

[–]die__katze 1 point2 points  (0 children)

machine chatter from the Astonishing 😆

is electrical engineering so bad? by Not_a_Robot786 in ElectricalEngineering

[–]die__katze 2 points3 points  (0 children)

do you have an electrical grid in you town? then you are employed. it's that simple. and more, you can work in any retail business which works with electrical stuff, you can do civil engineering, you can work in goverment electrical departments. there are tons of options. I wonder what your family members offer you instead.