Project 2022-01 Reporting ACE Definition and Associated Terms

​​​​​​​​​​​​​​​Related Files

​Status

Board Adopted: February 15, 2024

​Filed with FERC: March 8, 2024​

Background

The SAR states that the current definition of Reporting Area Control Error (ACE) presents a conflict with the Western Interconnection's Automatic Time Error Correction (ATEC) process and does not allow other Interconnections to pursue ATEC. Additionally, there is confusion in that the terms ACE and Reporting ACE are both used throughout the standards. A revised definition should provide improve long-term average frequency performance as well as give other Interconnections the ability to pursue automatic correction approaches.

Standard(s) Affected: Multiple standards reference the Reporting ACE definition, including BAL.


Draft

Actions

​Dates

Results​
Consideration of Comments



Reporting ACE Definition Master List including Errata Change

Clean | Redline​
Errata Change: On February 21, 2024, Standards Committee approved changes to add “Automatic Generation Control (AGC)” to the modified definitions list, and accepted the proposed changes made to the AGC term and definition. 


05/02/24

​Reporting ACE Definition Master List

Clean | Redline to Last Posted​ | Redline to Last Approved
For informational purposes. These documents will be presented to the Board of Trustees


01/16/2024





Final Draft


​Reporting ACE Definiti
on Master List
Clean | Redline to Last Posted | Redline to Last Approved

Implementation Plan
Clean | Redline






Final Ballots

Info

Vote








12/11/23 - 12/20/23

Modified - Interchange Meter Error -(IME)
This ballot was set up in the system as additional vs. final. The ​results were verified in accordance with the SPM for final ballots.

 
Retirement - Net Actual Interchange
This term should not have been balloted for final approval. It will not proceed to Board adoption/regulatory approval.


All other ballot results are correct and can be accessed here:

New - ACE Diversity Interchange (ADI)

New - Inadvertent Interchange Management (IIM)

Modified - Actual Net Interchange (NIA)

Modified - Area Control Error (ACE)

Modified - Automatic Time Error Correction (ATEC)

Modified - Balancing Authority Area (BAA)

Modified - Balancing Contingency Event (BCE)

Modified - Control Performance Standard (CPS)

Modified - Disturbance

Modified - Dynamic Interchange Schedule or Dynamic Schedule

Modified - Frequency Bias Setting (FBS)

Modified - Frequency Error

Modified - Implemented Interchange

Modified - Inadvertent Interchange

Modified - Operating Reserve – Spinning

Modified - Operating Reserve – Supplemental

Modified - Overlap Regulation Service

Modified - Pseudo-Tie

Modified - Ramp Rate or Ramp

Modified - Regulation Service

Modified - Reportable Balancing Contingency Event (RBCE)

Modified - Reporting Area Control Error (Reporting ACE)​

Modified - Reserve Sharing Group (RSG)

Modified - Reserve Sharing Group Reporting ACE

Modified - Scheduled Frequency

Modified - Scheduled Net Interchange (NIS)

Modified - Supplemental Regulation Service

Modified - Tie Line Bias (TLB)

Modified - Time Error (TE)

Modified - Time Error Correction (TEC)

Retirement - Disturbance Control Standard

Retirement - Net Interchange Schedule

Retirement - Net Scheduled Interchange

Retirement - Reportable Disturbance

Implementation Plan​​






​Draft 2

Inadvertent Interchange Management – (IIM)
and 
Reporting Area Control Error – (Reporting ACE)
Clean | Redline

Draft 1
ACE Diversity Interchange (ADI)
Clean | Redline

Supporting Materials
Unofficial Comment Form (Word)




Initial and Additional Ballots

Ballot Open Reminder​

Info​

Vote






10/20/23 - 10/30/23​

​Ballot Results





​Join Ballot Pool
​09/14/23 - 10/13/23


​Comment Period

Info

Submit Comments​


09/14/23 - 10/30/23​

​​​​

Consideration of Comments​​​









​Reporting ACE Definition Master List



Supporting Materials

Unofficial Comment Form (Word)











Initial Ballots

Ballot Open Reminder​

Info

Vote












03/07/23 - 03/16/23

​​Ballot Results

New - Inadvertent Interchange Management (IIM)​

Modified - Actual Net Interchange (NIA)​

Modified - Area Control Error (ACE)​

Modified - Automatic Time Error Correction (ATEC)

Modified - Balancing Authority Area (BAA)

Modified - Balancing Contingency Event (BCE)

Modified - Control Performance Standard (CPS)​

Modified - Disturbance

Modified - Dynamic Interchange Schedule or Dynamic Schedule

Modified - Frequency Bias Setting (FBS)

Modified - Frequency Error​

Modified - Implemented Interchange

Modified - Inadvertent Interchange

Modified - Interchange Meter Error (IME)

Modified - Operating Reserve – Spinning

Modified - Operating Reserve – Supplemental

Modified - Overlap Regulation Service

Modified - Pseudo-Tie

Modified - Ramp Rate or Ramp

Modified - Regulation Service​

Modified - Reportable Balancing Contingency Event (RBCE)

Modified - Reporting Area Control Error (Reporting ACE)

Modified - Reserve Sharing Group (RSG)

Modified - Reserve Sharing Group Reporting ACE

Modified - Scheduled Frequency

Modified - Scheduled Net Interchange (NIS)

Modified - Supplemental Regulation Service

Modified - Tie Line Bias (TLB)

Modified - Time Error (TE)

Modified - Time Error Correction (TEC)

Retirement - Disturbance Control Standard

Retirement - Net Actual Interchange

Retirement - Net Interchange Schedule

Retirement - Net Scheduled Interchange

Retirement - Reportable Disturbance

Implementation Plan​​

​​​

​Join Ballot Pools
Note: There is a separate ballot for each of the definitions and implementation plan related to this project – a total of 36. It is necessary to join each ballot pool in order to submit votes on all of the definitions and implementation plan




​01/31/23 - 03/01/23















​Comment Period

Info​

Submit Comments


01/31/23 - 03/16/23​​
​​



The Standards Committee accepted the SAR on June 15, 2022


Drafting Team Nominations

Supporting Materials

Unofficial Nomination Form (Word)


Nomination Period

Info

Submit Nominations​




​​02/09/22 - 03/10/22




Standard Authorization Request

Supporting Materials

Unofficial Comment Form (Word)

​​
Comment Period

Info

Submit Comments


​​
02/09/22 - 03/10/22