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Transmission Outage Coordination

COMPASS is a system used for planning, scheduling, and communicating transmission outages to ensure grid reliability. It helps identify outage types, limitations, and mitigations. The Reliability Assessment process considers time, risks, and coordination with other entities for outage planning. Outage notifications are sent to relevant parties for preparedness. By utilizing COMPASS, outage information can be shared promptly with field personnel and operators. This tool enhances coordination and communication for outage management.

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Transmission Outage Coordination

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  1. Transmission Outage Coordination

  2. Transmission Outages • Outage Coordination Group • Outage Timelines • Outage Requestors • COMPASS • Reliability Assessment • Notifications

  3. Outage Department • Part of PacifiCorp Transmission and Balancing Authority real time operations group • Part of the Reliability Entity for the PacifiCorp BAA footprint • Responsible for coordinating the reliability assessment of outages within the PacifiCorp BAA footprint and with adjacent BAA’s and the Peak RC • Facilitates communication of outages, reliability path de-rates, and scheduling path de-rates as requested by any entities and as appropriate • Operates week days, and is supported by real time operations during other hours

  4. Outage Timelines • Certain lines identified in the Northwest Power Pool planned outage coordination process require scheduling 45 days prior to the start of the Outage Month • 10 working days for lines and equipment 150 kV and above • 5 working days for lines and equipment 34.5 kV to 150 kV • 3 working days for distribution outages • These are minimums and we encourage scheduling outages as early as possible • Unplanned/Emergency outages are entered and communicated as soon as practical

  5. Outage Requestors • Transmission Operators (including but not limited to Pacific Power and Rocky Mountain Power) • Balancing Authority Areas • Generator Operators • Others working in proximity to energized equipment

  6. COMPASS • Coordinated Outage Management, Planning And Scheduling System • Used to create, post and communicate outages • Identifies which equipment and what type of outage is occurring • Can be used to identify transmission or scheduling limitations associated with the outage • Can be used to identify potential mitigations or additional notes pertaining to an outage • Can be set up to auto-notify via e-mail specific persons for specific equipment outages

  7. Reliability Assessment • Each outage request is considered by outage coordinators, accounting for the time of the outage and any other outages scheduled at that time, as the outage requests are received • Requestors are contacted by outage coordination for follow up questions as appropriate • Transmission and scheduling limitations associated with the outage are identified prior to posting • As necessary, further studies or coordination with other departments or companies is performed • For outages that present an elevated level of reliability risk, the requestor is contacted to discuss shortening, moving the outage or doing work on nights/weekends, etc.

  8. Reliability Assessment (continued) • Outages are posted as soon as practical to allow field and operations personnel, Transmission Services departments, and others as much time as possible to prepare for or comment on the outage • Further assessments are carried out on month ahead, week ahead, day ahead, and a real time basis. • A new assessment of an outage or combination of overlapping outages can be initiated by any party at any time

  9. Outage Notifications • COMPASS has the ability to associate any piece of equipment with any e-mail recipient. Once a request is made to associate an e-mail list with a piece of equipment, that party shall be contacted for all future outages as soon as they are posted. This feature can not be used for Market affiliates, but is available to Customer Account Managers • In addition to specific requests, notification to the PEAK RC, CAISO, affected TOP’s, GOP’s and BAA’s are made upon all outage postings or updates • COMPASS can submit outage information including generic notes sections or specific TTC information to Transmission Service providers per their request so they can post on their OASIS sites

  10. Questions?

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