Download Next Day Studies Guideline Exhibit 3 Outage Operating Memo

Outage Operating Memo
Outage Description
Outage Name
COS# Crow number
Select Outage start date – Select Outage End Date
Entity
Concurrent
Outage(s)
Coordinated Entities
Written By
Reviewed By
Written Date
Revision
Company acronym of entity taking the outage
Enter any significant outages and dates occurring in the area. List “N/A” if there are
not any applicable concurrent outages.
Company acronyms for all impacted entities
Company acronym and the last name of the author of the memo
Company acronym and last name of every person involved in the memo
Date the memo was written and/or issued
Version number. Start with 000 and increment when a change is made
Note: Although the studies used in preparing this Outage Operating Memo indicated the following predefined issues, system
conditions may change (e.g., higher-than-expected load forecasts or forced outages) and may result in additional issues
not identified in this memo. As such, pre-contingent actions for those issues shall be handled in accordance with the Peak
RC Monitoring of Real-Time SOL and IROL Exceedances procedure.
1.0 Outage Description
Any pertinent details of the outage such as: purpose/reason for the outage, recall associated with the
outage, any general system issues observed in taking the outage, etc.
2.0 Switching Point Setup
All relevant switching points (i.e., circuit breakers and/or disconnects) changing state for the outage
required for proper modeling. List “N/A” if this section does not apply for the outage.
TOP/BA
ID
Substation
Name of the substation, e.g., Acme
PCB or DSW Identifier
PCB or DSW Identifier,
e.g., PCB123.
Status (Open or Closed)
The expected status for the
outage.
3.0 System Monitoring
Provide a list of the expected critical contingency/monitored element pairs along with the rating
magnitude and duration of the monitored element. Study engineer shall make a judgment call as to
what to include in this section.
TOP/BA
Monitored Element
Critical Contingency
Highest
Available Rating
Rating
Duration
ID
The monitored
element(s).
Critical Contingency
resulting in monitored
element exceedance.
Magnitude
MVA, kV (P.U.)
etc.
Applicable
time
duration.
Rating Type
Rating type
(continuous,
emergency,
etc.).
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Outage Operating Memo
4.0 Pre-Contingency Mitigation
Generation Requirements
If required, list all generators and their expected dispatch needed to facilitate the outage. Indicate
whether a generator needs to be on for the duration of the outage or if any system conditions need to
be monitored to determine the necessity of the generation.
All generators and their expected dispatch needed to facilitate the outage. Indicate whether a
generator needs to be on for the duration of the outage or if any system conditions need to be
monitored to determine the necessity of the generation. List “N/A” if this section does not apply for the
outage.
Path or Interface Flow Requirements
List all paths or interfaces and their associated limits that need to be monitored for the outage.
All paths or interfaces and their associated limits that need to be monitored for the outage. List “N/A” if
this section does not apply for the outage.
RTCA Monitoring
List all pre-contingent actions (e.g., generation re-dispatch, curtailments, topology adjustments, etc.) to
be taken if an exceedance of the highest available rating in either RTCA or another monitored value is
expected to occur. The action may not be necessary for the outage to begin, but can become applicable
at any point due to changes in system conditions (e.g., load, generation dispatch, forced outages).
All pre-contingent actions to be taken if an exceedance of the highest available rating in either RTCA or
another monitored value is expected to occur. List “N/A” if this section does not apply for the outage.
5.0 Post-Contingent Action
List all post-contingent actions, when applicable, taken to alleviate the SOL exceedance,
including RAS and automatic actions (i.e., thermal relay opening a line if trip setting is
exceeded). These actions are only acceptable if the highest value is not exceeding postcontingency and if the action can be taken prior to exceeding the SOL duration. Other
acceptable post-contingent actions may include automatic load-shedding schemes (voltage or
frequency), but only if all other action (e.g., generation redispatch, system configuration) has
already been taken AND the post-contingent system performance has been verified not to
result in an IROL condition.
All post-contingent actions, when applicable, taken to alleviate the SOL exceedance, including RAS and
automatic actions. List “N/A” if this section does not apply for the outage.
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