Ratings Information
Ratings Information is currently available in eDART to users via Trans. Tickets -> Public Files
Following 881 Go-Live, this page will no longer be available and 881 ratings information will only be available in eDART via:
For questions around FERC Order 881, please contact Order881@pjm.com or eDART881@pjm.com.
| Type |
Frequency |
Description |
| Permanent TXT |
Twice per day
9:00 a.m. EPT
1:00 p.m. EPT |
- All reportable facilities within the PJM operational footprint
- Obtained from the PJM Energy Management System
- Changes reflect effective permanent ratings
|
| Temporary TXT |
Twice per day
9:00 a.m. EPT
1:00 p.m. EPT |
- Limited durations, typically less than six months due to reliability and safety
- Active, temporary changes, as well as future changes
- Estimated dates are provided to indicate when the temporary ratings are in effect.
- The facilities will revert to their permanent ratings upon the completion of the temporary rating change.
|
NERC Alert TXT
|
Twice per day
9:00 a.m. EPT
1:00 p.m. EPT |
Rating changes due to NERC Alerts (Emergency or Near term) issued to verify field conditions are consistent with established ratings as per standards FAC-008 and FAC-009. |
Real Time
DLR ZIP
|
Every 10 minutes |
Real time ratings for facilities enabled for dynamic ratings. |
Effective ZIP
|
Every 10 minutes |
- Permanent and temporary ratings
- NERC Alert changes
- Dynamic Ratings Forecast files - For transmission owners with Dynamic Line Ratings (DLR) facility, the zipped file contains individual company files with DLR forecasted information for up to the next 48hrs.
- Real Time DLR
|
Historical
Today ZIP
Yesterday ZIP
2 days ago ZIP
3 days ago ZIP |
Today - every hour
Yesterday - daily
2 days ago - daily
3 days ago - daily
|
- Effective Ratings for Today
- Effective Ratings for Yesterday
- Effective Ratings for 2 Days Ago
- Effective Ratings for 3 Days Ago
|
|
Reasons for Rating Change TXT
|
Daily 05:37 a.m. EPT |
A list of available reasons that are required by PJM to be selected for a rating change. Reasons are periodically added and retired based on operational needs.
|
Ratings Formats
| Column Name |
Column Definition |
| Company |
PJM EMS abbreviation of the designated Transmission Owner where the equipment resides, or equipment owner, for the equipment. |
| Substn |
The substation for the given equipment. For lines, the substation shown will usually be the first alphanumeric substation name. (Ex. A line going from Alpha substation to Bravo substation would be listed under Alpha. aka, PJM EMS B1 field.) |
| kV |
The voltage level for the given equipment expressed in kilovolts (kV). (aka, PJM EMS B2 field.) |
| Dev |
Device name, abridged to a maximum of 8 characters, for the PJM EMS equipment device name for the given equipment. (aka, PJM EMS B3 field.) |
| End |
PJM EMS END A or END B for a LINE, END A for a flow or series device or HIGH/LOW for a XFMR. |
| Descr |
Description of the equipment. (aka, PJM EMS B3 Text field.) |
| DLR |
Indicates if facility is enabled for dynamic ratings (Y) or not (N) |
| Degf |
Temperature set in degrees Fahrenheit. |
| Norm |
Continuous rating under Normal (NL) operating conditions. (See manual M-03: Section 2 re: Facility Ratings.) |
| Long |
Long Term Emergency (LTE) rating. (See manual M-03: Section 2 re: Facility Ratings.) |
| Shrt |
Short Term Emergency (STE) rating. (See manual M-03: Section 2 re: Facility Ratings.) |
| Dump |
Load Dump (LD) emergency rating. (See manual M-03: Section 2 re: Facility Ratings.) |
Each temperature level has a separate set of ratings for day and night time operations.
Additional information on PJM operations related to thermal violations can be found in
PJM Manual 03: Transmission Operations PDF.
| Column Name |
Column Definition |
| Substn |
The substation for the given equipment. For lines, the substation shown will usually be the first alphanumeric substation name. (Ex. A line going from Alpha substation to Bravo substation would be listed under Alpha. aka, PJM EMS B1 field.) |
| kV |
The voltage level for the given equipment expressed in kilovolts (kV). (aka, PJM EMS B2 field.) |
| Dev |
Device name, abridged to a maximum of 8 characters, for the PJM EMS equipment device name for the given equipment. (aka, PJM EMS B3 field.) |
| End |
PJM EMS END A or END B for a LINE, END A for a flow or series device or HIGH/LOW for a XFMR. |
| Descr |
Description of the equipment. (aka, PJM EMS B3 Text field.) |
| DLR |
Indicates if facility is enabled for dynamic ratings (Y) or not (N) |
| Reason |
The reason for the ratings change. Available choices can be found in the Reasons for Rating Change text report. |
| Start |
IF Active: Date and time the ratings were made effective.
IF Future: Estimated date and time the ratings will be in effect.
Date is in MM/DD/YYYY format. Time is in 24 hour format. |
| Est. End |
Estimated date and time ratings are scheduled to end. The date is in the MM/DD/YYYY format. The time is in 24 hour format. |
| Status |
The current status of the temporary rating request. The following statuses are displayed in the report: Active, Approved, and Awaiting Approval. |
| Degf |
Temperature set in degrees Fahrenheit. |
| Norm |
Continuous rating under Normal (NL) operating conditions. (See manual M-03: Section 2 re: Facility Ratings.) |
| Long |
Long Term Emergency (LTE) rating. (See manual M-03: Section 2 re: Facility Ratings.) |
| Shrt |
Short Term Emergency (STE) rating. (See manual M-03: Section 2 re: Facility Ratings.) |
| Dump |
Load Dump (LD) emergency rating. (See manual M-03: Section 2 re: Facility Ratings.) |
Each temperature level has a separate set of ratings for day and night time operations.
Additional information on PJM operations related to thermal violations can be found in PJM Manual 03: Transmission Operations PDF.
| Column Name |
Column Definition |
| HourEndGMT |
End Hour for which the dynamic ratings are valid.
Time is in GMT
|
| Station |
The substation for the given equipment. For lines, the substation shown will usually be the first alphanumeric substation name. (Ex. A line going from Alpha substation to Bravo substation would be listed under Alpha (aka, PJM EMS B1 field.) |
| Voltage |
The voltage level for the given equipment expressed in kilovolts (kV). (aka, PJM EMS B2 field.) |
| Equipment |
Description of the equipment. (aka, PJM EMS B3 Text field.) |
| End |
PJM EMS END A or END B for a LINE, END A for a flow or series device or HIGH/LOW for a XFMR. |
| Normal |
Continuous rating under Normal (NL) operating conditions. (See manual M-03: Section 2 re: Facility Ratings.) |
| LongTerm |
Long Term Emergency (LTE) rating. (See manual M-03: Section 2 re: Facility Ratings.) |
| ShortTerm |
Short Term Emergency (STE) rating. (See manual M-03: Section 2 re: Facility Ratings.) |
| LoadDump |
Load Dump (LD) emergency rating. (See manual M-03: Section 2 re: Facility Ratings.) |
| Column Name |
Column Definition |
| Substn |
The substation for the given equipment. For lines, the substation shown will usually be the first alphanumeric substation name. (Ex. A line going from Alpha substation to Bravo substation would be listed under Alpha. aka, PJM EMS B1 field.) |
| kV |
The voltage level for the given equipment expressed in kilovolts (kV). (aka, PJM EMS B2 field.) |
| Dev |
Device name, abridged to a maximum of 8 characters, for the PJM EMS equipment device name for the given equipment. (aka, PJM EMS B3 field.) |
| End |
PJM EMS END A or END B for a LINE, END A for a flow or series device or HIGH/LOW for a XFMR. |
| Descr |
Description of the equipment. (aka, PJM EMS B3 Text field.) |
| DLR |
Indicates if facility is enabled for dynamic ratings (Y) or not (N) |
| Status |
The current status of NERC Ratings Alert Changes. (Ex. Implemented.) |
| Reason |
The reason for the ratings change. Available choices can be found in the Reasons for Rating Change text report. |
| Est. Start |
Estimated date and time ratings are scheduled to start. Date is in MM/DD/YYYY format. Time is in 24 hour format. |
| Est. End |
Estimated date and time ratings are scheduled to end. The date is in the MM/DD/YYYY format. The time is in 24 hour format. |
| Act. Start |
Actual date and time ratings were made effective. Date is in MM/DD/YYYY format. Time is in 24 hour format. |
| Degf |
Temperature set in degrees Fahrenheit. |
| Norm |
Continuous rating under Normal (NL) operating conditions. (See manual M-03: Section 2 re: Facility Ratings.) |
| Long |
Long Term Emergency (LTE) rating. (See manual M-03: Section 2 re: Facility Ratings.) |
|
| Shrt |
Short Term Emergency (STE) rating. (See manual M-03: Section 2 re: Facility Ratings.) |
|
| Dump |
Load Dump (LD) emergency rating. (See manual M-03: Section 2 re: Facility Ratings.) |
|
Each temperature level has a separate set of ratings for day and night time operations.
Additional information on PJM operations related to thermal violations can be found in PJM Manual 03: Transmission Operations PDF.
| Column Name |
Column Definition |
| Station |
The substation for the given equipment. For lines, the substation shown will usually be the first alphanumeric substation name. (Ex. A line going from Alpha substation to Bravo substation would be listed under Alpha (aka, PJM EMS B1 field.) |
| Voltage |
The voltage level for the given equipment expressed in kilovolts (kV). (aka, PJM EMS B2 field.) |
| Name |
Short name of the equipment. (aka, PJM EMS B3 Name field.) |
| Equipment |
Description of the equipment. (aka, PJM EMS B3 Text field.) |
| End |
PJM EMS END A or END B for a LINE, END A for a flow or series device or HIGH/LOW for a XFMR. |
| Normal |
Continuous rating under Normal (NL) operating conditions. (See manual M-03: Section 2 re: Facility Ratings.) |
| Long |
Long Term Emergency (LTE) rating. (See manual M-03: Section 2 re: Facility Ratings.) |
| Short |
Short Term Emergency (STE) rating. (See manual M-03: Section 2 re: Facility Ratings.) |
| Load Dump |
Load Dump (LD) emergency rating. (See manual M-03: Section 2 re: Facility Ratings.) |