4 ms·

If anyone else was looking for the source of this, it's here: https://emergencyprocedures.pjm.com/ep/pages/dashboard.jsf https://emergencyprocedures.pjm.com/ep

If anyone else was looking for the source of this, it's here: https://emergencyprocedures.pjm.com/ep/pages/dashboard.jsf https://emergencyprocedures.pjm.com/ep/pages/dashboard.jsf

lgats 2y ago
Fascinating, if anyone has info on other grids that share these types of alerts, pease link!
- Brybry 2y ago
  ercot (texas): https://www.ercot.com/services/comm/mkt_notices/notices https://www.ercot.com/services/comm/mkt_notices/notices miso (midcontinent): https://www.misoenergy.org/markets-and-operations/notifications/real-time-operations-notifications/ https://www.misoenergy.org/markets-and-operations/notificati... ieso (canada/ontario): https://www.ieso.ca/Sector-Participants/RSS-Feeds/Day-0-Advisory-Notices-Summary https://www.ieso.ca/Sector-Participants/RSS-Feeds/Day-0-Advi...
  - everybodyknows 2y ago
    CAISO (California): https://www.caiso.com/informed/Pages/Notifications/NoticeLog.aspx https://www.caiso.com/informed/Pages/Notifications/NoticeLog... https://www.caiso.com/informed/Pages/Notifications/NoticeArchive.aspx https://www.caiso.com/informed/Pages/Notifications/NoticeArc... Nothing reported just yet ...
  - andrewinardeer 2y ago
    Ercot seems to put some geo restrictions on their page. I've been blocked from viewing. I'm in Australia. When I put on my US VPN, it works.
- Animats 2y ago
  PJM is still at "warning". No alerts or actions are listed. If problems were expected, there would be alerts and preparatory actions. PJM mentions that they turn off guest access if the site overloads. So please don't over-use this link.
  - Animats 2y ago
    Minor update: the warning has been extended another 16 hours, but downgraded from K8 to K7.
    - icehawk 2y ago
      PJIM is at 'Action' now: ' A Geomagnetic Disturbance Action has been issued as of 22:15 on 05.10.2024 to protect the power system from damage or disruptions due to increased geomagnetic activity.'
      - Animats 2y ago
        Not good. PJM has a plan. Geo-Magnetic Disturbance (GMD) Operating Plan (EOP-010-1)[1] Usage of some specific transmission lines has to be kept below certain values. Right now, this is a low-load period late at night without bad weather, so there are no additional actions ordered. The system load is probably within the more restrictive limits just because it's late night. If problems develop, you'll see more actions in there. Watch morning load take-up tomorrow. There's a press release, too.[2] If you really want to understand this, start at page 32 of this training PowerPoint.[3] In 1989, PJM had a blackout because of this, and that's thoroughly discussed in the training materials. Geography matters. PJM has transmission lines running in the same direction as a mountain range with igneous rock. So "ground" isn't as conductive as is desirable. During a geomagnetic disturbance event, ground voltage at different points can differ. This causes problems with wye-wound transformers grounded at the center of the wye. They get some induced DC current, which can partially saturate the magnetics and heat up transformers. There's a control room running this in Valley Forge, PA. (And a second control room in an undisclosed location.) (Incidentally, this has absolutely nothing to do with electromagnetic pulse problems. EMP has a rise time of nanoseconds. GMD has a rise time in minutes. Unless you have a really long wire (many kilometers) with a potential to ground, this doesn't affect much.) [1] https://pjm.com/directory/manuals/m13/index.html#Sections/38_GeoMagnetic_Disturbance_GMD_Operating_Plan_EOP0101.html https://pjm.com/directory/manuals/m13/index.html#Sections/38... [2] https://insidelines.pjm.com/pjm-issues-geomagnetic-disturbance-warning-for-may-10/ https://insidelines.pjm.com/pjm-issues-geomagnetic-disturban... [3] https://www.pjm.com/-/media/training/nerc-certifications/trans-exam-materials-2018/transmission/lesson-10-emergency-procedures-2018.ashx https://www.pjm.com/-/media/training/nerc-certifications/tra...
- caf 2y ago
  AEMO: https://aemo.com.au/en/market-notices?marketNoticeQuery=%22space+weather%22&marketNoticeFacets= https://aemo.com.au/en/market-notices?marketNoticeQuery=%22s...
- tommerjones 2y ago
  ISO New England: https://www.iso-ne.com/event-details?eventId=155085 https://www.iso-ne.com/event-details?eventId=155085
japhyr 2y ago
This chart of the real-time K-index is pretty interesting: https://www.swpc.noaa.gov/products/planetary-k-index#:~:text=The%20K%2Dindex%20quantifies%20disturbances,during%20a%20three%2Dhour%20interval https://www.swpc.noaa.gov/products/planetary-k-index#:~:text.... I found this after looking up what "A GMD warning of K7 or greater" means.
- keepamovin 2y ago
  Thanks for that link!!! I didn't know there was a dedicated page for the K index :) haha
pyuser583 2y ago
That server is down. I hope we didn’t break it by too many requests.
- keepamovin 2y ago
  I don't think it's just "us". A lot of people are seeking answers right now

If anyone else was looking for the source of this, it's here: https://emergencyprocedures.pjm.com/ep/pages/dashboard.jsf https://emergencyprocedures.pjm.com/ep/pages/dashboard.jsf

lgats 2y ago

Fascinating, if anyone has info on other grids that share these types of alerts, pease link!

Brybry 2y ago
ercot (texas): https://www.ercot.com/services/comm/mkt_notices/notices https://www.ercot.com/services/comm/mkt_notices/notices miso (midcontinent): https://www.misoenergy.org/markets-and-operations/notifications/real-time-operations-notifications/ https://www.misoenergy.org/markets-and-operations/notificati... ieso (canada/ontario): https://www.ieso.ca/Sector-Participants/RSS-Feeds/Day-0-Advisory-Notices-Summary https://www.ieso.ca/Sector-Participants/RSS-Feeds/Day-0-Advi...
- everybodyknows 2y ago
  CAISO (California): https://www.caiso.com/informed/Pages/Notifications/NoticeLog.aspx https://www.caiso.com/informed/Pages/Notifications/NoticeLog... https://www.caiso.com/informed/Pages/Notifications/NoticeArchive.aspx https://www.caiso.com/informed/Pages/Notifications/NoticeArc... Nothing reported just yet ...
- andrewinardeer 2y ago
  Ercot seems to put some geo restrictions on their page. I've been blocked from viewing. I'm in Australia. When I put on my US VPN, it works.
Animats 2y ago
PJM is still at "warning". No alerts or actions are listed. If problems were expected, there would be alerts and preparatory actions. PJM mentions that they turn off guest access if the site overloads. So please don't over-use this link.
- Animats 2y ago
  Minor update: the warning has been extended another 16 hours, but downgraded from K8 to K7.
  - icehawk 2y ago
    PJIM is at 'Action' now: ' A Geomagnetic Disturbance Action has been issued as of 22:15 on 05.10.2024 to protect the power system from damage or disruptions due to increased geomagnetic activity.'
    - Animats 2y ago
      Not good. PJM has a plan. Geo-Magnetic Disturbance (GMD) Operating Plan (EOP-010-1)[1] Usage of some specific transmission lines has to be kept below certain values. Right now, this is a low-load period late at night without bad weather, so there are no additional actions ordered. The system load is probably within the more restrictive limits just because it's late night. If problems develop, you'll see more actions in there. Watch morning load take-up tomorrow. There's a press release, too.[2] If you really want to understand this, start at page 32 of this training PowerPoint.[3] In 1989, PJM had a blackout because of this, and that's thoroughly discussed in the training materials. Geography matters. PJM has transmission lines running in the same direction as a mountain range with igneous rock. So "ground" isn't as conductive as is desirable. During a geomagnetic disturbance event, ground voltage at different points can differ. This causes problems with wye-wound transformers grounded at the center of the wye. They get some induced DC current, which can partially saturate the magnetics and heat up transformers. There's a control room running this in Valley Forge, PA. (And a second control room in an undisclosed location.) (Incidentally, this has absolutely nothing to do with electromagnetic pulse problems. EMP has a rise time of nanoseconds. GMD has a rise time in minutes. Unless you have a really long wire (many kilometers) with a potential to ground, this doesn't affect much.) [1] https://pjm.com/directory/manuals/m13/index.html#Sections/38_GeoMagnetic_Disturbance_GMD_Operating_Plan_EOP0101.html https://pjm.com/directory/manuals/m13/index.html#Sections/38... [2] https://insidelines.pjm.com/pjm-issues-geomagnetic-disturbance-warning-for-may-10/ https://insidelines.pjm.com/pjm-issues-geomagnetic-disturban... [3] https://www.pjm.com/-/media/training/nerc-certifications/trans-exam-materials-2018/transmission/lesson-10-emergency-procedures-2018.ashx https://www.pjm.com/-/media/training/nerc-certifications/tra...
caf 2y ago
AEMO: https://aemo.com.au/en/market-notices?marketNoticeQuery=%22space+weather%22&marketNoticeFacets= https://aemo.com.au/en/market-notices?marketNoticeQuery=%22s...
tommerjones 2y ago
ISO New England: https://www.iso-ne.com/event-details?eventId=155085 https://www.iso-ne.com/event-details?eventId=155085

japhyr 2y ago

This chart of the real-time K-index is pretty interesting: https://www.swpc.noaa.gov/products/planetary-k-index#:~:text=The%20K%2Dindex%20quantifies%20disturbances,during%20a%20three%2Dhour%20interval https://www.swpc.noaa.gov/products/planetary-k-index#:~:text.... I found this after looking up what "A GMD warning of K7 or greater" means.

keepamovin 2y ago
Thanks for that link!!! I didn't know there was a dedicated page for the K index :) haha

pyuser583 2y ago

That server is down. I hope we didn’t break it by too many requests.

keepamovin 2y ago
I don't think it's just "us". A lot of people are seeking answers right now