[RFI] Interesting...

[John Langdon]

I saw a presentation long ago about the early days of electrification, when sales forces got "spiffed" for selling to customers with lagging or leading loads depending on the current mix the power company had, and offering discounts for customers with purely resistive loads!

At least 50% of all industrial location decisions are based on available power options and costs.

73 John N5CQ


-----Original Message-----
From: RFI <rfi-bounces+woyb10051=outlook.com at contesting.com> On Behalf Of Jim Brown
Sent: Monday, December 30, 2024 1:06 AM
To: rfi at contesting.com
Subject: Re: [RFI] Interesting...

On 12/29/2024 6:43 PM, William Kim . wrote:
> This is interesting.  We (our utility) keep an eye on loads and distortion caused by loads.  There are restrictions.

The link seems to be "technobabble" from a reporter who didn't understand most of what someone (or multiple someones) told him.

Power systems all over the world have been plagued with highly distorted load currents for decades, ever since electronic loads have become a very large fraction of the load on our power systems. Virtually all the load current flows at positive and negative peaks of the sine wave, causing very high levels of distortion. To make matters much worse, triplen harmonics (those whose harmonic number is divisible by three) from load currents ADD in the neutral in three phase systems, and leakage currents add in the protective earth. I addressed all of this about 20 years ago in this "White Paper for contractors installing large audio and video systems for public buildings.

What is far more concerning about these data centers is the sheer magnitude of their loads, and added demands it places on power systems, cooling systems and the loads they place on the environment, and so on.
I've seen a lot of more intelligent and better informed reporting on on these very real issues in the mainstream press.

73, Jim K9YC


_______________________________________________
RFI mailing list
RFI at contesting.com
http://lists.contesting.com/mailman/listinfo/rfi