1. 2017 System Assessment Jonathan Young February 2017

2. Outline Timeline Active Timeline Work Base Cases
Contingency & RAS Files
What should we study?
Special / Sensitivity Studies

3. Timeline Provide Review Cases for Members Finalize Ten Year Plan
Solicit Order 1000 Potential Needs suggestions
December
Early January
Review and Finalize Study Cases/Dynamics Data(Due by 16th)
Mid January (After Case Finalization)
Provide TPL /Stability Contingency & Automatic Action Files
January
Develop Contingency Lists
Reaffirm base and sensitivity study plan
Request updates to 2022 cases to create 2023 cases
February
Process & Review Contingency Results
Evaluate Order 1000 Potential Needs
Process & Review Transient Stability Study Contingency Results
March/April
Prepare System Assessment
Identify Order 1000 Needs
Prepare Need Statement
Approve System Assessment
Recommend Study Teams for Proposed & Order 1000 Needs
TBD
Timeline

4. Active Timeline Work Distribute Additional Updates (unplanned)
Provide TPL /Stability Contingency & Automatic Action Files
Develop Contingency Lists
Reaffirm Base and Sensitivity Study Plan
Request Updates to 2022 Cases to Create 2023 Cases

5. WECC Cases For Study Plan
Base Case
Desired Study Year
WECC Build Yr
Notes
1-2 Year Heavy Summer
2017 HS2-OP
= 2019
2016
1-2 Year Heavy Winter
HW3-OP
= 2018/19
5 Year Heavy Summer
2022 HS1
= 2022
Plan to create a 2023 Case in early 2017
5 Year Heavy Winter
HW2
= 2021/22
Long Term Heavy Summer
2026 HS1
= 2027
2015
Long Term Heavy Winter
HW1
= 2026/27
1-5 Year Light LS
2019

6. Contingency & RAS Models
Contingency Lists:
All Cases:
Base: Models to produce P1-P7
Addition: Models to accommodate any sensitivities
RAS:
TBD
Recommendation: At a minimum, developing a way to indicate if a RAS could operate for the outage condition.

7. Confirmation on What to study?
Traditionally we have studied all seven cases produced in the System Assessment process. It has been suggested that we still produce the cases but focus more on sensitivities and assessment fewer cases.
We are recommending assessing the long-term peak cases and an off peak case.
Comments?

8. Special / Sensitivities Studies
N-1-1: Refine study method from past year’s to better meet the member needs
High Renewable Study: Expand on mapping method used from 2016 Biennial Plan
Evaluate the need for the delayed 2016 Operational & Planning gap study and study if needed
Special Studies
Geomagnetic Disturbance Study to align with NERC standard
MOD-33

9. Questions?