ALTERNATIVE ENERGY FORUM - etc.

Solar => Solar energy => Topic started by: CG on October 22, 2020, 08:10:08 am

Title: Worlds largest Solar farm HVDC transmission ??
Post by: CG on October 22, 2020, 08:10:08 am

WOW
https://www.sciencealert.com/world-s-largest-solar-farm-to-pipe-power-internationally-from-australia-under-the-sea

Title: Re: Worlds largest Solar farm HVDC transmission ??
Post by: Caleb on October 23, 2020, 06:38:36 am

What could go wrong?

Title: Re: Worlds largest Solar farm HVDC transmission ??
Post by: CG on October 23, 2020, 09:45:03 am

I just wondered why they chose to transmit it as DC rather than traditional AC. Can't use transformers on that. But then again the farm would generate the power as DC and then have to be put through an inverter or motor/generator to get AC.
It's a toss-up, I guess.
Pretty big project. I would think they would want to use it themselves, but it may be the "end user" is  just renting the land for "their" project.

Title: Re: Worlds largest Solar farm HVDC transmission ??
Post by: Caleb on October 25, 2020, 10:48:39 am

I think inductive losses get quite high when a transmission line is so long like that. 

Title: Re: Worlds largest Solar farm HVDC transmission ??
Post by: CG on October 25, 2020, 12:28:27 pm

1 mile of 0000 copper is 0.2588 ohms, I thought it would be higher.
But copper may be too expensive. 100 miles = 25.88 ohms .724.64 ohms for the 2800 miles.  Aluminum is 0.3985 ohms. 100 miles would be 39.85 ohms.