Historical inquiry: wartime influences on the power system
Historical inquiry: wartime influences on the power system
(OP)
Greetings:
What knowledge can you share about how the war (most interestingly World War II) changed the way power systems operate?
Some examples which I have found,
-the increased use of capacitors in industrial plants
-the decrease in 600-V equipment, despite its economy
-tapped transmission lines and the need for differential protection
Thanks for your thoughts!
What knowledge can you share about how the war (most interestingly World War II) changed the way power systems operate?
Some examples which I have found,
-the increased use of capacitors in industrial plants
-the decrease in 600-V equipment, despite its economy
-tapped transmission lines and the need for differential protection
Thanks for your thoughts!






RE: Historical inquiry: wartime influences on the power system
They then discovered some of the idiosyncrasies of a wye:delta transformer bank when the primary neutral is connected.
Some utilities went to floating the primary wye point and discovered some new issues. Mostly all wye:wye now.
Bill
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"Why not the best?"
Jimmy Carter
RE: Historical inquiry: wartime influences on the power system
The war made it clear to governments the need for interconnectivity of grid, reliabilty issues,overloading requirements in case of emergencies.
My fond memory with regard to transformers- during war period US Government wanted some medium sized transformers urgently for war production.Since there was acute shortage of copper, government released few tonnes of silver from treasurey to make transformer windings.After the war,of course, the transformers were scrapped and the silver returned to US coffers.
RE: Historical inquiry: wartime influences on the power system
The conversion of 2400 V delta circuits to 4.16 kV wye also predated WWII by a decade or more.
Today's preferred distribution design is 4-wire multi-grounded neutral. However, if you see what types of distribution are in California, they still have a mix of a considerable amount of 3-wire delta circuits in addition to 4-wire circuits. The other 49 states have mostly 4-wire distribution.
RE: Historical inquiry: wartime influences on the power system
I didn't realize that the conversion started that early in some areas.
Our little local utility (Okanagan Valley, Western Canada) went from 2400 V delta to 4160 V wye in the 50's.
Thanks for the information.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Historical inquiry: wartime influences on the power system
It's use in transformers was rare.
The type HH copper transmission line from Boulder dam to LA was on it's was to replacement before war was declaired.