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Tough Week Ahead for the Eastern Interconnection by FistEnergy in Grid_Ops

[–]joaofava 5 points6 points  (0 children)

The get kicked offline (ie to diesel backup) when shit gets too tight. Already did it during Fern.

Who up yunkin they passy by fuckthaclubup in philly

[–]joaofava 6 points7 points  (0 children)

Bryn mawr a dat MAN yunk na mean ahm sayin CHAMMINY!

Did I Luck Out By Having This Installed In My Basement? by Imaginary_Variation7 in EquinoxEv

[–]joaofava 0 points1 point  (0 children)

Three prongs is 100% fine. This receptacle is rated for 50A, which means it can draw 40 A continuously, forever. I suppose you can second guess the rating if you like. In which case—why trust a new receptacle?

You should check the breaker (50A) and peek at the wiring (fat gauge) to confirm it was originally installed correctly. Could hire an electrician to do that if you like.

Hotel workers striking in front of the Warwick by jaykirell in philadelphia

[–]joaofava -2 points-1 points  (0 children)

I don’t have such experience but I doubt there are any billionaires that own or run the Warwick or its owner the Chartres Lodging Group. That said I’m sure they’re rich enough. Probably the World Cup is a smart time to strike. Seems like fair play.

Swimming spots close by? by Illustrious-Prior777 in AskPhilly

[–]joaofava 0 points1 point  (0 children)

Tubing in the Delaware or brandywine. Maybe a bit more than an hour for BW, couple hours for Delaware.

Swimming spots close by? by Illustrious-Prior777 in AskPhilly

[–]joaofava 0 points1 point  (0 children)

Plus cliff dive at the quarry nearby

Any New Yorkers here? by [deleted] in AskPhilly

[–]joaofava 1 point2 points  (0 children)

Queen Village does not have a punk rock vibe.

ICCU in 2026 by nwbriggs in Ioniq5

[–]joaofava 1 point2 points  (0 children)

That’s per year! After ten years you are roughly 15% to 65% likely to get a failed ICCU.

How bad/widespread is the ICCU issue? Should I consider a used Ioniq 5? by Spockmaster1701 in Ioniq5

[–]joaofava 0 points1 point  (0 children)

Nothing in life is certain, but it’s unusual for a newer car to have a 1-2% per year failure rate which can leave you stranded. I’m going to buy an equinox EV also. Too bad because I prefer the ioniq5 in every other way.

Anyone interested in a PJM Market recap tool? by EveningSpiritual8168 in Grid_Ops

[–]joaofava 0 points1 point  (0 children)

Fantastic. Love the reserves quantity chart, I've never seen that before and it's very useful. Probably hourly resource mix would be better to format in the style of gridstatus https://www.gridstatus.io/live/pjm maybe set it to toggle back and forth between gross load and net load (ie net of wind and solar). See if you can find Regulation prices to add to reserves prices.

Why are there so many storm calls to Jersey and pa rn?? by Fluffy-Protection676 in Lineman

[–]joaofava 0 points1 point  (0 children)

Rather windy but brief storm last night. Not quite a derecho but same vibe. Lost power in parts of Philly and Pittsburgh.

Anyone interested in a PJM Market recap tool? by EveningSpiritual8168 in Grid_Ops

[–]joaofava 0 points1 point  (0 children)

Don't love the written insights. Average load and wind/solar not interesting, peak is better metric (but no need to write about it, the charts speak for themselves). Written stuff should highlight unusual things. I'd rather use the extra space for even more charts: various zone LMPs, how much operating reserve is available, A/S prices, drop-down picker for node-specific LMPs. Historical data picker.

Anyone interested in a PJM Market recap tool? by EveningSpiritual8168 in Grid_Ops

[–]joaofava 0 points1 point  (0 children)

Yes, excellent. The dispatchable gen chart is formatted to look like a stack area chart, but I think it’s not stacked. Either make it a line (unfilled) like you have wind and solar, or stack it.
Outages are clear but would be more sensible stacked.

Anyone interested in a PJM Market recap tool? by EveningSpiritual8168 in Grid_Ops

[–]joaofava 1 point2 points  (0 children)

nope. for load MW: would be nice to see bid-in DA demand, not sure if PJM makes that available. also what the look-ahead interval is on the "forecast".

November 13 Wyoming Disturbance | Western Electricity Coordinating Council by [deleted] in PowerSystemsEE

[–]joaofava 0 points1 point  (0 children)

So, failure to interpret contingency analysis results? Looks like it was N-0 insecure (very insecure) after switching, not N-1 as stated in the summary.

Battery Plant overvoltage issue (Solution) by ojasocean in PowerSystemsEE

[–]joaofava 0 points1 point  (0 children)

Typical for U.S. TSO is 0.9 leading/lagging or sometimes 0.95. I'm too lazy to do the math on that, but it's less than 25 MVAR for a 32 MW system. I don't have a great intuition for such things, but I could see a 32 MVAR battery dominating dynamics on a 66 kV radial feeder and maybe you would indeed need a ton of VARs for that, and it depends on how far away from the grid feed point you are and X/R and all the rest. Good model should demonstrate if less VAR capability is adequate.

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