Electrical power is amazing and dangerous at high voltages. Electrical substation is a part of an electrical generation, transmission, and distribution system that transform voltage from high to low, or the reverse, or control the flow of electrical power. Substations may be owned and operated by an electrical utility, or may be owned by a large industrial or commercial customer. Generally substations are unattended, relying on SCADA for remote supervision and control. Here is a collection of videos on electrical substations:
Electrical Grid 101 : All you need to know !
Power Substation Overview
3D Animation of 33/11KV Substation (Outdoor Section)
Electrical Substation visit. Inside an Electrical Substation.
6 Electrical Substation Bus Schemes Explained
375 MVA Transformer – A quick look and energising
500kV substation equipment – A quick look
Broken Hill Substation
132/33 kv Substation overview
132kV Circuit breaker – A brief overview
ABB 145 KV SF6 circuit breaker
354KV Disconnect Openning
500,000 volt line opened under load
Electrical Substation Tour
How to Install the TripSaver II Recloser
Substations and Switchyards [PREVIEW]
50KVA distribution transformer 20Kv-400V
Isolator vs Circuit Breaker – Difference Between Isolator and Circuit Breaker
A practical working explanation of ISOLATOR-Dissconnector switch for 220kV switchyard
Isolator opening on load. All video
Difference between Circuit breaker and Disconnector/Isolator | Explained | TheElectricalGuy
Operation of Isolator With Earth Switch in Electrical Substation
Electrical Substations
Brazil-Argentina HVDC Interconnection
110 kV transformer switching on line
Sub Station Training
20KV High Voltage Transformer – Jaycobs Ladder demo
184 Comments
Tomi Engdahl says:
HV / LV Cable fault location
https://www.youtube.com/watch?v=7U973NPm2ns
A compilation video of cables going ‘bang’.
These arc’s are struck in the course of cable fault location when pinpointing the faults using an acoustic discharge method.
Tomi Engdahl says:
AC substation grounding for safety
https://www.youtube.com/watch?v=NXtA5rxJXGA
This video provides a process to test and design a substation grounding system for safety. Some of the factors you need to consider in substation design include fault currents, surface coverings, power system configurations, and existing ground grid.
Tomi Engdahl says:
Underground Transmission Lines
https://www.youtube.com/watch?v=i5WvDpjqXuo
Georgia Transmission explains why high-voltage power lines are rarely installed underground: prohibitive construction costs, shorter life expectancy, and slower repair time during outages.
Comments:
SHORTER LIFE EXPECTANCY?!
Overhead lines change temperature faster, change temperature MORE, are exposed to wind, ozone, UV, water, ice and snow. They are exposed to MORE animals, especially squirrels and birds
Loss-costs are, on average, 2.8% for underground, vs 37% for overhead.
70% of line failures are weather-related, 11 percent are animals on overhead cables/poles/transformers…
Underground cables bring those externality risks down by at least an order of magnitude!
Overhead cables not being insulated or very thin insulation are kept cool by passing air, underground with thick insulations cables heat up when passing a lot of current for lengthy times thus resulting to very decreased life of the plastic insulation.
Depends. Overloaded cables are affected by temperature, but the process is much faster than the life expectancy proposed on the video.
At values below the nominal ampacity the isolation degrades because electrostatic phenomena.
Anywhere in the US, as I know it, don’t allow underground transmission lines. I think it’s because of the big Electromagnetic Field (EMF). Underground lines tend to be below 20 feet below the surface. When we walk near or above one of those lines, we can be severely harmed by the EMF radiation.
Overhead transmission lines running near houses causes leukemia in the people of those houses, especially kids.
Under ground transmission lines can be shielded and made safer but the power company doesn’t want to afford the cost.
Tomi Engdahl says:
Installing Underground Wiring
https://www.youtube.com/watch?v=YpQ_nZhnFIo
The steps Walton EMC takes to install underground electrical wiring to serve homes and businesses.
Underground Cable laying
https://www.youtube.com/watch?v=Od0k9nqtoCM
Tomi Engdahl says:
Underground cable in the National Grid – How it’s done
https://www.youtube.com/watch?v=Xtk7QI-JHBc
A film about how Svenska Krafnät builds underground cables in the National Grid.
Tomi Engdahl says:
Underground Splice
https://www.youtube.com/watch?v=Y2f2f0G_jkM
ComEd terminates a new three-phase distribution cable with a Cold Shrink Straight Joint. Host Utility: Commonwealth Edison.
Tomi Engdahl says:
How to Install a Recloser
https://www.youtube.com/watch?v=L-Zwbfw-lCs
In Aurora, Illinois, just west of Chicago, a Commonwealth Edison crew installs a new G&W Viper ST recloser.
Tomi Engdahl says:
360 tour of The University of Manchester’s High Voltage Lab
https://www.youtube.com/watch?v=yBedWO5cRF0
Hear Dr Vidyadhar Peesapati explain the work that goes on inside the UK’s largest ‘lightning lab’.
http://www.mub.eps.manchester.ac.uk/science-engineering/2017/04/10/drone-vs-lightning/
Tomi Engdahl says:
How The Power Gets To The Outlet
https://hackaday.com/2019/08/28/how-the-power-gets-to-the-outlet/
How Do Substations Work?
https://www.youtube.com/watch?v=7Q-aVBv7PWM
If you want to learn more about the kinds of wires you see overhead, we’d did that earlier. In fact, we had a whole series on the electric grid, smart and otherwise.
Tomi Engdahl says:
Electrical Bus-Bar And Its Types
https://electricalenergyworld.org/electrical-bus-bar-and-its-types
The most common of the bus-bars are 40×4mm (160 mm2); 40×5 mm (200 mm2) ; 50×6 mm (300mm2) ; 60×8 mm (480 mm2) ; 80×8 (640 mm2) and 100×10 mm (1000 mm2).
The various types of busbar arrangement are used in the power system. The selection of the bus bar is depended on the different factor likes reliability, flexibility, cost etc. The following are the electrical considerations governing the selection of any one particular arrangement.
The bus bar arrangement is simple and easy in maintenance.
The maintenance of the system did not affect their continuity.
The installation of the bus bar is cheap.
The small substation where continuity of the supply is not essential uses the single bus bar. But in a large substation, the additional busbar is used in the system so that the interruption does not occur in their supply
Tomi Engdahl says:
Tomorrow’s Hydropower Begins With Retrofitting Existing Dams
https://spectrum.ieee.org/energywise/energy/renewables/tomorrows-hydropower-begins-retrofitting-dams
With wind and solar prices dropping, it can be easy to forget that two-thirds of the globe’s renewable energy comes from hydropower. But hydro’s future is muddled with ghostly costs—and sometimes dubious environmental consequences.
Tomi Engdahl says:
Elements of a substation
A Primary power lines’ side B Secondary power lines’ side
1.Primary power lines 2.Ground wire 3.Overhead lines 4.Transformer for measurement of electric voltage 5.Disconnect switch 6.Circuit breaker 7.Current transformer 8.Lightning arrester 9.Main transformer 10.Control building 11.Security fence 12.Secondary power lines
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Why are Stones laid in an Electrical Substation?
https://www.electricaltechnology.org/2020/07/stones-in-substation.html
Tomi Engdahl says:
69 KV Substation – Walk through
https://www.youtube.com/watch?v=_ib1XxLSuaQ
This video is a quick walkthrough of a very basic Substation. Most subs now have much more advanced equipment! None the less, all of the equipment is tested regularly and just as reliable in terms of delivering power to the customers. In fact often times, substation related problems are fewer and far between not having to deal with all the fancy equipment! I’d still much rather operate a breaker remotely then mess around with a high tension fuse.
Tomi Engdahl says:
https://www.electricaltechnology.org/2020/07/stones-in-substation.html
Tomi Engdahl says:
140,000 Volt Substation Explosion
https://www.youtube.com/watch?v=uhG5RTKy66k
Tomi Engdahl says:
Awesome Arcing, 400KV Isolator closing at night
https://www.youtube.com/watch?v=d-bEK2R8nII
230 kv open switch failure
https://www.youtube.com/watch?v=0pRZ-4Q-uqo
Tomi Engdahl says:
Energized Static
https://www.youtube.com/watch?v=UHOgyL6KjRk
We were working in an Entergy substation. I’m not a lineman, but I believe there’s half a million volts on each one of the three phases coming into the transformer. The sound you hear is the electricity trying to ground itself through the water vapor in the air. A lightning rod of a cell tower sounds similar when a thunderstorm is close. Nothing special, I just thought it was cool.
Tomi Engdahl says:
Unicoi Substation – Energizing New Transformer
https://www.youtube.com/watch?v=lVZz3dgIROA
Erwin Utilities energizing a new transformer at the Unicoi Substation, October 2019.
Tomi Engdahl says:
TAMCO VCB 11kV Racks
https://www.youtube.com/watch?v=2WfiPnb3RZQ
SHUTDOWN, RACKING OUT AND ISOLATION OF 11KV VCB
https://www.youtube.com/watch?v=AbQ15q17ypY
Tomi Engdahl says:
Opening 230Kv Air Disconnect switch
https://www.youtube.com/watch?v=nv5OTeOs6Ug
Awesome Disconnector Switching with ❙ Electric Arc (part 2)
https://www.youtube.com/watch?v=9GeXkussHfw
Tomi Engdahl says:
Unitil Kingston Substation Expansion, Chapter 4 – Power On
https://www.youtube.com/watch?v=NcLE6hjSUOM
In 2013, Unitil embarked on a multi-year project to upgrade the infrastructure at an important substation serving the Seacoast NH service territory. The expansion and upgrades will accommodate load growth throughout the area and will free up capacity at other system supplies for the future.
Tomi Engdahl says:
All About Substations
https://www.youtube.com/watch?v=G6D_dNizuPo
What does an electrical substation do? MVEC substation techs Bryce and Brent give you the inside scoop.
Tomi Engdahl says:
Working inside a Substation (138kv – 345kv)
https://www.youtube.com/watch?v=lOlWWxh9jHU
Hey Everyone!
First thing I’ll get out of the way is, ONLY qualified people should be within the fenced area of a Substation unless accompanied by a trained representative for specific tasks. (Example: Snow removal). While every company has a different set of procedures and guidelines, I feel these 3 things are a good place to start. If ever you see something that you are not sure of … Stop and Ask. Don’t ever get yourself into a situation in which you are not familiar with the equipment you are working with.
Tomi Engdahl says:
Live Wire Demonstration
https://www.youtube.com/watch?v=2Xoyb9M5-EA
Dominion Safety Experts travel our service area conducting live wire demonstrations for fire departments and emergency responders to alert them to the dangers of working around power lines.
Tomi Engdahl says:
What Is A Black Start Of The Power Grid?
https://www.youtube.com/watch?v=uOSnQM1Zu4w
Tomi Engdahl says:
Authorized Personnel Only – How to Start and Sync a 400,000 Watt Turbine Hydroelectric Generator
https://www.youtube.com/watch?v=xGQxSJmadm0
Tomi Engdahl says:
Wash live lines
https://youtu.be/ghKr3Nu7uTQ?si=MQZMIeoflRSU1F9c
https://youtu.be/Ef1byR3ik1U?si=eXka7dRwdMBfKpBU
Tomi Engdahl says:
https://www.electricaltechnology.org/2023/12/5p10-5p20-current-transformer.html
Tomi Engdahl says:
https://electrical-engineering-portal.com/download-center/books-and-guides/electricity-generation-t-d/undergrounding-hv-lines
Tomi Engdahl says:
This begins with a very simple DC circuit, but quickly gets into capacitors and inductors and the manipulation of the POWER FACTOR by electrical grid companies!
https://m.youtube.com/watch?v=ZwkNTwWJP5k&fbclid=IwZXh0bgNhZW0CMTEAAR2O0tG6dKi8XaTvoxDtfKy8jqmFmfM4NTrnPW_QuNmFmNwrHWjwcCFGSrQ_aem_D1NDn1bgpSpj-eyV3C1B1A
Tomi Engdahl says:
https://www.electricaltechnology.org/2020/07/stones-in-substation.html?fbclid=IwY2xjawFqY45leHRuA2FlbQIxMQABHa-1gVzhtJ_ZQlnkZw0uu6lD_WXUuQPPLdENEGmczn7QGkRpRuPmdV1zcw_aem_cQteqCuecJQpc6cNUP6g5w#google_vignette
Tomi Engdahl says:
The Most Confusing Part of the Power Grid
https://www.youtube.com/watch?v=ZwkNTwWJP5k
What the heck is power factor?
Geomagnetic storms aren’t the only thing that can make the grid behave in funny ways. There are devices even in your own home that force the grid to produce power and move it through the system, even though they aren’t even consuming it.
Tomi Engdahl says:
Which Power Plant Does My Electricity Come From?
https://www.youtube.com/watch?v=sH1PVVJuBtE
The grid is not only mechanically and electrically complicated; it’s financially complicated, too. We don’t really participate in all that complexity – we just pay our bill at the end of every month. But it does affect us in big ways, so I think it’s important at least to understand the basics.