NOTICE DATE: October 10, 2014
NOTICE TYPE: W-A101014-01 Operations
SHORT DESCRIPTION: Implementation of maximum shadow price for an irresolvable constraint in SCED
INTENDED AUDIENCE: ERCOT Market Participants
DAY AFFECTED: October 10, 2014
LONG DESCRIPTION: On October 10, 2014, ERCOT is implementing a modified maximum shadow price for a constraint that was found to be irresolvable per the criteria defined
in Section 3.6.1 of the business practice document, “Setting the Shadow Price Caps and Power Balance Penalties in Security Constrained Economic Dispatch.”
This maximum shadow price change is in addition to the change that was implemented on October 9, 2014, per Market Notice W-A100914-01 attached below.
The contingency/constraint pair and maximum shadow price (set in accordance with Section 3.6.2 of that same document) are as follows:
|
Contingency Name |
Constraint Name |
Description |
Maximum Shadow Price |
|
SLA_RIO8 |
RIOHND_ERIOHND_1 |
Loss of the 138 kV line from Las Palma to Rio Hondo overloading the 138 kV line from Rio Hondo – East Rio Hondo sub |
$2,000.00 |
Additionally, there is a correction to the constraint description for the maximum shadow price change that occurred yesterday. In Market Notice W-A100914-01 attached below issued on October 9, 2014, the constraint description referred
to the “69 kV line from Harlingen #1 – Oleander.” The description should have stated the “138 kV line from Harlingen #1 – Oleander.” The corrected table is as follows:
|
Contingency Name |
Constraint Name |
Description |
Maximum Shadow Price |
|
SLA_RIO8 |
HARLNS_OLEAND1_1 |
Loss of the 138 kV line from Las Palma to Rio Hondo overloading the 138 kV line from Harlingen #1 - Oleander |
$2,000.00 |
ADDITIONAL INFORMATION: The business practice document is posted under
Key Documents on the Real-Time Market Web page.
CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email
at [log in to unmask].
If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list:
http://lists.ercot.com.
_____________________________________________________________________________
NOTICE DATE: October 9, 2014
NOTICE TYPE: W-A100914-01 Operations
SHORT DESCRIPTION: Implementation of maximum shadow price for an irresolvable constraint in SCED
INTENDED AUDIENCE: ERCOT Market Participants
DAY AFFECTED: October 9, 2014
LONG DESCRIPTION: On October 9, 2014, ERCOT is implementing a modified maximum shadow price for a constraint that was found to be irresolvable per the criteria defined in Section 3.6.1 of the business practice
document, “Setting the Shadow Price Caps and Power Balance Penalties in Security Constrained Economic Dispatch.” The contingency/constraint pair and maximum shadow price (set in accordance with Section 3.6.2 of that same document) are as follows:
|
Contingency Name |
Constraint Name |
Description |
Maximum Shadow Price |
|
SLA_RIO8 |
HARLNS_OLEAND1_1 |
Loss of the 138 kV line from Las Palma to Rio Hondo overloading the 69 kV line from Harlingen #1 - Oleander |
$2,000.00 |
ADDITIONAL INFORMATION: The business practice document is posted under
Key Documents on the Real-Time Market Web page.
CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email
at [log in to unmask].
If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list:
http://lists.ercot.com.
sa