1. ADS and WPR Seed Case Background
Nick Hatton
Associate Engineer II
Western Electricity Coordinating Council

2. ADS Background: Purpose & Products
Common Starting Point – Consistent initial data from the RPGs that helps WECC populate their Base Case
Reflects key planning assumptions of:
Resource and transmission topology
RPS compliance
Other public policy considerations
Key Products: 2028 HS PF; 2028 ADS PCM, Change files and roundtrip-validated 1-hour exports.
The Board of Directors approved the development of the Anchor Data Set (ADS) concurrently as the Reliability Assessment Committee (RAC). The ADS is a compilation of ten-years of load, resource and transmission topology information used by the Western Planning Regions (WPR) and International Planning Regions (IPR) in their regional transmission plans as well as by other stakeholders in various planning analyses. Data included in the ADS would be compatible with Production Cost Models (PCM) and Power Flow Models (PFM),1 including dynamic data and associated assumptions. The data would reflect applicable provincial, state and federal public policy requirements. The primary goals of the ADS development are:
1. Reduced duplication. A single submission of a solved power flow and PCM would reduce the current iterations between various power flow and PCM cases.
2. Increased collaboration between WECC and Regional Planning Groups. The ADS validation process would establish a single forum for resolving questions about data included in Regional Transmission Plans.
3. Establishment of a single repository for data used in reliability assessments. The ADS would contain reliability assessment data in a single repository instead of multiple locations within WECC, Western Planning Regions and International Planning Regions.
4. Increased synchronization between Year-10 and Year-20 reliability assessments. The ADS process would increase review and validation of assumptions used in reliability assessment data during preparation of the ADS.

3. Operational ADS Workflow (1.0)
Quick overview of ADS process here
Western Electricity Coordinating Council

4. Base Case Data and the ADS Workflow
Discussion on how base case will be built, and where various parties get to have input
Western Electricity Coordinating Council

5. WPR Seed Case Expectations
WPR seed case exists as a reference
Typical Case build
Coordination points
Review what the WPR seed case is, and what it should include. Cover what our beliefs are as to what people will do with this information
Cover how the WPR data and the typical data submitter’s data will make it into the base case
Cover where the WPR and the data submitters will have a chance to coordinate
Western Electricity Coordinating Council

6. Western Electricity Coordinating Council
Timeline
8/4/ – Data Request mailed out
Use the WPR seed case to inform what data is included in the data being provided
Coordinate any significant deviations from the seed case with the planning regions
9/29/17 – Initial Data Due to WECC
10/27/17 – WECC staff send case for review
Key time to coordinate changes with the planning regions
11/17/17 – Data submitter comments due to WECC Staff
12/01/17 – WECC staff finalize the case
Western Electricity Coordinating Council

7. Western Electricity Coordinating Council
Data Quality Request
Correct Non-Conforming Flags
Interface Definitions
Turbine Types
All Seasonal branch ratings
Generators as negative loads – please follow DPM (any single unit above 10 MVA, or aggregation above 20 MVA modeled as generator)
Station Service loads should have an ID of “SS”
Each bus should have its Balancing Authority labeled
Western Electricity Coordinating Council

8. WPR expanded data request
Western Electricity Coordinating Council

9. Western Electricity Coordinating Council
Questions? Please contact me:
Nick Hatton
(801)
Western Electricity Coordinating Council