480V to 125kV for a Energy storage facility - How is this best done?
480V to 125kV for a Energy storage facility - How is this best done?
(OP)
I'm trying to learn more about how a bi-directional 10-20MW energy storage facility might be fielded and connected to high voltage. What is the most economical way to connect many 480V devices to the transmission grid.
It appears that this would normally be done with a substation transformer (say 125kV to 13.8kV) and then with a collection of 10-20 smaller transformers (13.8kV to 480V). This kind of dedicated facility would be expensive.
Is there any way to create a dedicated facility that might be more economical? Is there a way to go directly to/from high voltage?
It appears that this would normally be done with a substation transformer (say 125kV to 13.8kV) and then with a collection of 10-20 smaller transformers (13.8kV to 480V). This kind of dedicated facility would be expensive.
Is there any way to create a dedicated facility that might be more economical? Is there a way to go directly to/from high voltage?






RE: 480V to 125kV for a Energy storage facility - How is this best done?
Bill
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"Why not the best?"
Jimmy Carter
RE: 480V to 125kV for a Energy storage facility - How is this best done?
"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
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RE: 480V to 125kV for a Energy storage facility - How is this best done?
If there was no electricity there would be no internet. Good point, don´t you? :D
RE: 480V to 125kV for a Energy storage facility - How is this best done?
What storage technology are you considering?
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If we learn from our mistakes I'm getting a great education!
RE: 480V to 125kV for a Energy storage facility - How is this best done?
Our company has experience with 100kW flywheels for energy storage. We have been contracted to look at producing a 500kW / 125kWh flywheel module with aggressive cost goals. We are currently funded for developing a smaller prototype that will prove the concepts required for the 500kW design. We have a unique design that we believe can compete with Beacon power on the flywheel unit. We lack knowledge on the power side beyond the drive, so we are looking to get educated.
RE: 480V to 125kV for a Energy storage facility - How is this best done?
Better make the most of the prototype project.
Wind farms use an intermediate voltage of 34.5 kV or something in that range.
David Castor
www.cvoes.com
RE: 480V to 125kV for a Energy storage facility - How is this best done?
Watch out if there's a high X/R ratio due to the stored energy devices because most distribution breakers don't like the long time to first current zero crossing, which can get a bit awkward during a fault.
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If we learn from our mistakes I'm getting a great education!
RE: 480V to 125kV for a Energy storage facility - How is this best done?
If there was no electricity there would be no internet. Good point, don´t you? :D