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
159 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.