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DC Tie Viewer


ERCOT EAST

OUTAGE UPDATE
Updated at 11/8/2022 11:51:08 AM – The ERCOT EAST DC Tie has been returned to normal operation.

History

ERCOT NORTH

OUTAGE UPDATE
Updated at 12/3/2022 12:17:59 AM (CS) - The ERCOT NORTH DC Tie in both directions will be limited to 0 as a result of an unplanned maintenance outage from 12/2/2022 12:17:00 AM (CS) to 12/9/2022 4:00:00 PM (CS).

History

WSCC EDDY Co.

El Paso Electric has posted a Business Practice on the EPE OASIS regarding operation of the Eddy County HVDC tie. Customers requesting transmission service under the SPP OATT for service up to or out of the Eddy HVDC tie are responsible for reading and understanding this EPE Business Practice. The customer should also understand that any transmission service charges for reservations under the SPP OATT up to or out of the EDDY HVDC tie will not be forgiven when the Eddy HVDC tie becomes inoperable due to this EPE Business Practice. Questions related to the EPE Business Practices or status of the Eddy HVDC Tie due to this Business Practice should be directed to the EPE OASIS or EPE Staff.

OUTAGE UPDATE
Updated at 8/2/2022 3:41:00 PM – The WSCC EDDY Co. DC Tie has been returned to normal operation.

History

WSCC BLACKWATER

OUTAGE UPDATE
Updated at 9/1/2022 1:25:32 AM – The WSCC BLACKWATER DC Tie has been returned to normal operation.

History

LAMAR

OUTAGE UPDATE
Updated at 11/11/2022 5:44:04 PM – The LAMAR DC Tie has been returned to normal operation.

History

MILES CITY

OUTAGE UPDATE
Updated at 10/25/2022 2:02:26 PM – The MILES CITY DC Tie has been returned to normal operation.

History

STEGALL

Transmission service across the Stegall HVDC Tie is administered by WAPA. SPP administers service to and from the Eastern terminal of this tie. Information provided here represents status of the HVDC Tie and outage information as communicated to SPP.
OUTAGE UPDATE
Updated at 10/24/2022 3:53:46 PM – The STEGALL DC Tie has been returned to normal operation.

History

SIDNEY

Transmission service across the Sidney HVDC Tie is administered by WAPA. SPP administers service to and from the Eastern terminal of this tie. Information provided here represents status of the HVDC Tie and outage information as communicated to SPP. Sidney DC Tie out of service due to maintenance work in the West.
OUTAGE UPDATE
Updated at 12/5/2022 7:20:33 AM – The SIDNEY DC Tie has been returned to normal operation.

History

RAPID CITY NON-DC TIE INJECTION POINT

Transmission service across the Rapid City HVDC Tie is administered by Black Hills Power. SPP administers service to and from the Eastern terminal of this tie (RCEASTINJ). Information provided here represents status of the Eastern terminal of the Rapid City DC Tie as communicated to SPP.
OUTAGE UPDATE
Updated at 11/11/2022 4:32:12 AM (CS) - The RAPID CITY NON-DC TIE INJECTION POINT DC Tie in both directions will be limited to 0 as a result of a planned maintenance outage from 10/10/2022 9:00:00 AM (CS) to 12/9/2022 2:00:00 PM (CS).

History

SASK POWER (SPC) NON-DC TIE INJECTION POINT

Transmission service across the SPP/SPC interface (at Boundary Dam substation on the Boundary Dam-Tioga 230kV line) is administered by SaskPower north of Boundary Dam, and by SPP south of Boundary Dam. Information provided here represents status of the SPP/SPC interface south of Boundary Dam substation (i.e. SPP Flowgates “SPC_EXP” (South-to-North) and “SPC_IMP” (North- to-South)), and outage or limitation information on the SPP Transmission System as communicated to SPP. There are Standing Operating Guides in place that outline reliability limitations that may occur during high western North Dakota load conditions (i.e., in the Bakken oil field area) or during contingency situations (e.g., outages). WAPA-UGP, as the Transmission Operator, coordinates the Operating Guides with SPP. The Operating Guides identify limitations to the North-to-South and South-to-North flows on the Boundary Dam-Tioga 230kV line. High western North Dakota loads in the Bakken area currently limit the ability to transfer power South-to-North across the Boundary Dam-Tioga 230kV line and have caused the Available Transfer Capability (ATC) for the “SPC_EXP” flowgate to be significantly limited and posted at 0 MW for extended time periods. The Bakken area load levels that trigger the reliability limitations are outlined in the Operating Guides. WAPA-UGP posts public information about historical, current, and forecasted load in the Bakken area utilized in the Operating Guides. This can be found on WAPA-UGP’s OASIS Homepage under ‘System Information’ > ’Williston Load Pocket Information’. WAPA-UGP and SPP periodically update the Operating Guides to reflect updated load conditions and network upgrade additions to the SPP Transmission System in the Bakken area, and SPP continues to release Non-Firm ATC on the South-to-North “SPC_EXP” flowgate, to the extent possible, based upon the current Operating Guides. SPP has authorized significant additional transmission reinforcements in, or around, the Bakken area, to address reliability needs identified in its recent Integrated Transmission Planning (ITP) process studies. More information related to the transmission limitations in the Bakken area that are currently impacting the ATCs on the SPP/SPC interface can be found on SPP’s website. SPP has posted emergency Non-Firm ATC at the request of WAPA-UGP as the TOP under certain circumstances. WAPA-UGP will post a notice, initiating an OASIS ENotice, when a request is sent to SPP for emergency ATC to be released over the SPP/SPC interface. The posting will be located on WAPA-UGP’s OASIS Homepage under ‘ATC Information’ > ‘WAPA-UGP-Emergency-ATC-Release-Request-Notifications’.
OUTAGE UPDATE
Updated at 12/5/2022 6:39:21 PM (CS) - The SASK POWER (SPC) NON-DC TIE INJECTION POINT DC Tie from south to north will be limited to 0 as a result of a planned maintenance outage from 12/5/2022 4:00:00 PM (CS) to 12/6/2022 12:00:00 PM (CS).

History