Increase transmission line voltage to over 500KV
Increase transmission line voltage to over 500KV
(OP)
In Ontario Canada, why cant 500 KV transmission lines be upgraded by adding a transformer uping the voltage to lets say 700 KV with the existing lines?
Instead of building a new power corridor.
Is there a law that states the max voltage?
Instead of building a new power corridor.
Is there a law that states the max voltage?






RE: Increase transmission line voltage to over 500KV
1. There may not be sufficient clearance on the line as-built for the higher voltage to avoid arcing to the earth or other corona effects.
2. The equipment may not be designed (insulators, buswork, breakers, etc) to handle the higher voltage and would have to be rebuilt at the higher rating.
3. As you get into the UHV designs, often the line configurations change drastically to avoid corona effects, audible noise, and other issues, that may be entirely different than the current 500kV line configuration.
It is not unheardof that a line can be rebuilt to a higher voltage, but often it has been designed to the higher voltage in the first place but operated at a lower voltage for a period. Otherwise, a significant amount of rebuilding may be required, and often it is not much more expensive to build a completely separate line on a different right-of-way and also be able to maintain the existing line to maintain power flows.
RE: Increase transmission line voltage to over 500KV
Keith Cress
kcress - http://www.flaminsystems.com
RE: Increase transmission line voltage to over 500KV
RE: Increase transmission line voltage to over 500KV
Keith Cress
kcress - http://www.flaminsystems.com
RE: Increase transmission line voltage to over 500KV
Besides turning off the intertie would generally have no impact on the side of the California-Oregon border that has generation; it would only impact the side that won't build a sufficient amount of generation.
RE: Increase transmission line voltage to over 500KV
Keith Cress
kcress - http://www.flaminsystems.com
RE: Increase transmission line voltage to over 500KV
Bill
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