"Magic Balls" installed by drones may revolutionize US power grid | Hacker News Reader

"Magic Balls" installed by drones may revolutionize US power grid

thecooldown.com

53 pointsforuhar20 comments

Magic Balls aka temperature sensors that allow transmission lines to be overloaded based on environmental conditions, meaning more capacity across existing lines when conditions are favorable.

+1 Thank you.

It also has voltage, vibration, ground clearance, inclination so you are also measuring snow and wind and other scada shit.

What's actually cool is I've never seen a drone install anything before. Closest thing is placing a bomb, which has an high amount of tolerance.

They say it can be installed without shutting down power. Think of all the things it skips, outages and the paperwork, working from heights and the paperwork, clearance zones and the paperwork. It's probably a 20 man team down to 10.

Also noted "Heimdall said that advanced weather information, power-line data, and machine learning are part of the solution its experts bring to the grid."

I'm not a fan of the manufacturer dubbing these "Magic Balls", when "sensor spheres" or even "Neuron" from the original article linked in this thread, is more than sufficient. We're not trying to appeal to home consumers here. Maybe it's for politicians...

Cool project though, transmission costs account for a large proportion of energy delivery.

it's probably for Americans

This story references the electrek story (already posted [0]), although the Heimdall post from October[1] (also referenced) seems to have the best info.

[0]: https://news.ycombinator.com/item?id=38983886 [1]: https://heimdallpower.com/us/arva-customer-story-magic-ball/

Just for a bit of background, transmission companies want to know the temperature of transmission lines because the dynamic clearance of the line to the ground as the current heats the wire limits the max current. Surprisingly complex to model accurately as it is quite dynamic (sometimes the conductor is pinned with the insulator and it swings, or sometimes it can slip through, etc, etc).

I can't find any information on how these are powered. Do they partly use current flow from coronal discharge? Or is it some long lasting battery?

Likely from the magnetic field from the conductor. They even have street lights that are powered this way.

https://livrepository.liverpool.ac.uk/3005516/1/TPEL2436702%...

https://www.youtube.com/watch?v=KqbIhZO7SJc

Not sure how much I am allowed to go into detail here, but can confirm what 127361 wrote: the sensors harvest power from the electromagnetic field in normal use. However, considering "power outage detection" is a selling point, you can draw your own conclusions about there being some power storage onboard ;)

power harvest and large/super caps? neat

I think the first assumption should be a boring old battery. Probably some lead acid type, since discharge would be very very rare.

probably patented by now? disclosed yet?

A few years ago I was thinking of how to use powerlines to recharge drones using the electromagnetic field. Imagine a drone hanging from a line like a bat, recharging in remote areas.

I think MIT had a patent for that. This could be the perfect use case for that too..?

There is already a lot of telemetry on North American transmission lines and even more on transmission substation equipment, because the utilities understand that these are their highest-replacement-cost assets. But in our regulatory environment, squeezing out the last increment of dynamic capacity is more of an RTO concern than a utility concern. The RTOs may be doing cost-benefit analysis on things like this, but that analysis will be very complicated.

"Regional Transmission Organization"?

Yes.according to Wikipedia:

A RTO in the US is a TSO that coordinates, controls, and monitors a multi-state electric grid. The voluntary creation of RTOs was initiated by FERC Order No. 2000, issued on December 20, 1999. RTOs typically perform the same functions as ISOs but cover a larger geographic area.

Those hyperlinks are pretty ballsy.

Good lord, please don’t do this to hyperlinks.

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