• The Electricity Discussion
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Personally, I find electricity fascinating. Post in here various videos, pictures, stories relating to electricity and it's awesomeness. I'll start: [QUOTE] Sequence of events The following is the blackout's sequence of events on August 14, 2003 12:15 p.m. Incorrect telemetry data renders inoperative the state estimator, a power flow monitoring tool operated by the Indiana-based Midwest Independent Transmission System Operator (MISO). An operator corrects the telemetry problem but forgets to restart the monitoring tool. 1:31 p.m. The Eastlake, Ohio generating plant shuts down. The plant is owned by FirstEnergy, an Akron, Ohio-based company that had experienced extensive recent maintenance problems. 2:02 p.m. The first of several 345 kV overhead transmission lines in northeast Ohio fails due to contact with a tree in Walton Hills, Ohio. 2:14 p.m. An alarm system fails at FirstEnergy's control room and is not repaired. 3:05 p.m. A 345 kV transmission line known as the Chamberlin-Harding line sags into a tree and trips in Parma, south of Cleveland. 3:17 p.m. Voltage dips temporarily on the Ohio portion of the grid. Controllers take no action. 3:32 p.m. Power shifted by the first failure onto another 345 kV power line, the Hanna-Juniper interconnection, causes it to sag into a tree, bringing it offline as well. While MISO and FirstEnergy controllers concentrate on understanding the failures, they fail to inform system controllers in nearby states. 3:39 p.m. A FirstEnergy 138 kV line trips in northern Ohio. 3:41 p.m. A circuit breaker connecting FirstEnergy's grid with that of American Electric Power is tripped as a 345 kV power line (Star-South Canton interconnection) and fifteen 138 kV lines fail in rapid succession in northern Ohio. 3:46 p.m. A fifth 345 kV line, the Tidd-Canton Central line, trips offline. 4:05:57 p.m. The Sammis-Star 345 kV line trips due to undervoltage and overcurrent interpreted as a short circuit. Later analysis suggests that the blackout could have been averted prior to this failure by cutting 1.5 GW of load in the Cleveland–Akron area. 4:06–4:08 p.m. A sustained power surge north toward Cleveland overloads three 138 kV lines. 4:09:02 p.m. Voltage sags deeply as Ohio draws 2 GW of power from Michigan, creating simultaneous undervoltage and overcurrent conditions as power attempts to flow in such a way as to rebalance the system's voltage. 4:10:34 p.m. Many transmission lines trip out, first in Michigan and then in Ohio, blocking the eastward flow of power around the south shore of Lake Erie from Toledo, Ohio, east through Erie, Pennsylvania and into the Buffalo, New York metropolitan area. Suddenly bereft of demand, generating stations go offline, creating a huge power deficit. In seconds, power surges in from the east, overloading east-coast power plants whose generators go offline as a protective measure, and the blackout is on. 4:10:37 p.m. The eastern and western Michigan power grids disconnect from each other. Two 345 kV lines in Michigan trip. A line that runs from Grand Ledge to Ann Arbor known as the Oneida-Majestic interconnection trips. A short time later, a line running from Bay City south to Flint in Consumers Energy's system known as the Hampton-Thetford line also trips. 4:10:38 p.m. Cleveland separates from the Pennsylvania grid. 4:10:39 p.m. 3.7 GW power flows from the east along the north shore of Lake Erie, through Ontario to southern Michigan and northern Ohio, a flow more than ten times greater than the condition 30 seconds earlier, causing a voltage drop across the system. 4:10:40 p.m. Flow flips to 2 GW eastward from Michigan through Ontario (a net reversal of 5.7 GW of power), then reverses back westward again within a half second. 4:10:43 p.m. International connections between the United States and Canada start to fail. 4:10:45 p.m. Northwestern Ontario separates from the east when the Wawa-Marathon 230 kV line north of Lake Superior disconnects. The first Ontario power plants go offline in response to the unstable voltage and current demand on the system. 4:10:46 p.m. New York separates from the New England grid. 4:10:50 p.m. Ontario separates from the western New York grid. 4:11:57 p.m. The Keith-Waterman, Bunce Creek-Scott 230 kV lines and the St. Clair–Lambton #1 230 kV line and #2 345 kV line between Michigan and Ontario fail. 4:12:03 p.m. Windsor, Ontario and surrounding areas drop off the grid. 4:12:58 p.m. Northern New Jersey separates its power-grids from New York and the Philadelphia area, causing a cascade of failing secondary generator plants along the New Jersey coast and throughout the inland regions west. 4:13 p.m. End of cascading failure. 256 power plants are off-line, 85% of which went offline after the grid separations occurred, most due to the action of automatic protective controls.[/QUOTE] Direct from wikipedia, that was a sequence of events from the 2003 Mass Cascading Failure that led to a blackout covering most of the Northeast United States and Canada. I was 7 years old at the time.
This is cool. [media]http://www.youtube.com/watch?v=8hwLHdBTQ7s[/media]
[QUOTE=Runar;37315679]This is cool. [media]http://www.youtube.com/watch?v=8hwLHdBTQ7s[/media][/QUOTE] how the shit did he get 244 batteries?
[QUOTE=Yahnich;37315920]presumably he bought them[/QUOTE] Look like he wrote "used" on some of them. I would call that experiment "destroyed".
[QUOTE=Runar;37315679]This is cool. [media]http://www.youtube.com/watch?v=8hwLHdBTQ7s[/media][/QUOTE] That arc looks very similar to the one that occurs during welding. I doubt it has as many amps though, as it usually requires around 60 amps to make the metal melt properly.
Well then do I have a YouTube Channel for you!~ [url]http://www.youtube.com/user/Photonvids[/url] Most of his videos are a combination of educational and destructive. [video=youtube;WSgRS0q5lek]http://www.youtube.com/watch?v=WSgRS0q5lek&feature=plcp[/video]
[media]http://www.youtube.com/watch?v=mpus81qzcNw[/media] :science:
High energy electric stuff is the best electric stuff. Gotta love them OCBs and tapchangers.~
True shit: Maxwell's theory of electromagnetism led to the discovery of relativity.
[QUOTE=VistaPOWA;37316759]High energy electric stuff is the best electric stuff. Gotta love them OCBs and tapchangers.~[/QUOTE] Especially when it fails [video=youtube;DCyMS7FKCZc]http://www.youtube.com/watch?v=DCyMS7FKCZc&feature=player_detailpage[/video] [editline]19th August 2012[/editline] Wow I just found about these "smart meters". [video=youtube;IrLF19BzIBI]http://www.youtube.com/watch?v=IrLF19BzIBI&feature=player_detailpage[/video] There was a story I read somewhere that 15 of these were installed on the side of an apartment building. Apparently, the radiation these things pour out killed the garden next to the meter block, and gave several of the occupants lymphoma. Luckily, I still have an analog meter in my home.
[QUOTE=Adelle Zhu;37317616]Wow I just found about these "smart meters". [video=youtube;IrLF19BzIBI]http://www.youtube.com/watch?v=IrLF19BzIBI&feature=player_detailpage[/video] There was a story I read somewhere that 15 of these were installed on the side of an apartment building. Apparently, the radiation these things pour out killed the garden next to the meter block, and gave several of the occupants lymphoma. Luckily, I still have an analog meter in my home.[/QUOTE] there is no empirical evidence to support this.
Tesla
[QUOTE=mike;37317852]there is no empirical evidence to support this.[/QUOTE] I'm attempting to find someone with a Gieger counter and a Smart Meter.
Woo, Studying to be an electrician, 1 year of school left! After that i can work with voltages between 1000V-230V iirc.
[QUOTE=Str4fe;37317956]Woo, Studying to be an electrician, 1 year of school left! After that i can work with voltages between 1000V-230V iirc.[/QUOTE] Do you need a different certification to work with >230Kv?
Yeah. And to get that you need to study a lot more.
[QUOTE=Str4fe;37318016]Yeah. And to get that you need to study a lot more.[/QUOTE] "Dont touch the ground"
The only radiation coming from them is EM and Geiger counters cannot detect that. Stop believing in alienconspiracy-grade stuff without them backed by control studies and being peer reviewed.
The smart meters shouldn't be more harmful than a cell phone. It's more of a privacy violation than it is dangerous.
[QUOTE=areolop;37318029]"Dont touch the ground"[/QUOTE] Well nailing some 2.5x3 MMJ cable on a wall is quite different than working with those MASSIVE cables for 230kV
here is a little light switch I made at school. the thing is that you don't have to touch it to turn it on. [media]http://www.youtube.com/watch?v=O8LQ25ZzmP0[/media] so you can hide it behind a wall. and just slide your hand over it to turn it on and off.
[QUOTE=jani_killer;37318351]here is a little light switch I made at school. the thing is that you don't have to touch it to turn it on. [media]http://www.youtube.com/watch?v=O8LQ25ZzmP0[/media] so you can hide it behind a wall. and just slide your hand over it to turn it on and off.[/QUOTE] In the future we'll all be slamming our arms into the wall to turn the lights on. [editline]19th August 2012[/editline] My friend made something similar that was voice-activated. It was a simple little circuit, but he was so excited to use it, he installed it on a lamp in his bedroom. Needless to say, it was allergy season, and the lamp was going nuts with him sneezing.
I'm an electrician gotten electrocuted about six times rofl
I've been electrocuted twice and had a capacitor explode in my face. I accidentally reversed the polarity on one when charge testing a bunch of them and it blew its contents all over my face and hand.
[QUOTE=Str4fe;37317956]Woo, Studying to be an electrician, 1 year of school left! After that i can work with voltages between 1000V-230V iirc.[/QUOTE] where you from?
So I was playing Tekkit (a really technical Minecraft mod) and I hooked up a high voltage solar array of about 48 panels to a substation. Input from array: ~9,000 EU/tick Output from High to Medium TX: 128 EU/tick Output from Medium to Low TX: 32 EU/tick Output from Direct Line: 512 EU/tick EU/tick = Amps EU/packet = Volts (packets are the "containers" of the power, each panel outputs 512 EU/p at 512 EU/t)
[QUOTE=Runar;37315679]This is cool. [media]http://www.youtube.com/watch?v=8hwLHdBTQ7s[/media][/QUOTE] Just watching this guys level of HV safety is making me cringe. Not to mention I can hear young children in the background Would anyone be interested in some pics of a really big vacuum tube (a transmitting triode), an x-ray tube, a Jacobs Ladder, and a whole bunch of other HV stuff? I'm not going to bother with them unless people are actually interested
[QUOTE=No_Excuses;37319042]I've been electrocuted twice and had a capacitor explode in my face. I accidentally reversed the polarity on one when charge testing a bunch of them and it blew its contents all over my face and hand.[/QUOTE] When I worked at a cinema, one of the technicians blew up a huge capacitor from a projector power unit. The metal disk in the top wasn't scored like they usually are, so it just flew off in one piece and punched a hole in the ceiling. Oh, that was a fun place. The projectors had the scariest warning labels I've ever seen: High voltage, high intensity light, UV light warning, high pressure xenon bulb (explosion warning), ozone warning, hot surface warning.
[QUOTE=Str4fe;37317956]Woo, Studying to be an electrician, 1 year of school left! After that i can work with voltages between 1000V-230V iirc.[/QUOTE] Electricians make da big bucks, no?
in Sweden we do earn quite a bit but it takes 4 years after school to become fully payed currently on my second year, first year is apprenticeship
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