Base Case Build Process Elena Melloni Associate Engineer Western Electricity Coordinating Council

Western Electricity Coordinating Council Discussion Outline WECC Base Case Building Procedure Powerflow construction Dynamics Conversions Posted Zip files Reporting Data Anomalies Western Electricity Coordinating Council

Base Case Compilation Schedule DATE DATA REQUEST MAILED DATE DATA DUE TO DATA SUBMITTER DATE DATA DUE TO WECC STAFF WECC STAFF SEND CASE FOR REVIEW DATE COMMENTS DUE TO DATA SUBMITTER DATE DATA SUBMITTER COMMENTS DUE TO WECC STAFF WECC STAFF FINALIZE DATE 2021 LSP1-S 07/21/17 08/18/17 09/15/17 09/29/2017 10/13/2017 10/20/2017 11/03/2017 2027-28 HW1 08/04/17 09/01/17 09/29/17 10/27/17 11/10/17 11/17/17 12/01/17 2028 HS1 2028 LSP1-S3 09/08/17 10/6/17 11/3/17 N/A 2019-20 HW1-S 10/06/17 11/03/17 12/15/17 12/29/17 01/05/18 01/19/18 2018-19 HW3-OP 11/17/17 12/15/17 01/12/18 02/9/18 02/23/18 03/09/18 03/23/18 2018-19 LW1-OP 2019 HSP1-OP 01/5/18 02/2/18 03/2/18 03/30/17 04/13/18 04/20/18 05/04/18 2023-24 HW2 02/16/18 03/16/18 05/11/18 05/18/18 06/01/18 06/15/18 2024 HS2 2019 HS3-OP 04/06/18 06/29/18 07/13/18 07/27/18 08/10/18 2019 LS1-OP 2019 LSP1-S 05/25/18 06/22/18 07/20/18 08/17/18 08/24/18 08/31/18 09/14/18 2028-29 HW1 07/06/18 08/03/18 09/28/2018 10/05/2018 10/19/2018 11/2/2018 2029 HS1 2029 HSP1-S 10/05/18 11/02/18 11/30/18 12/28/18 1/04/19 1/11/19 02/25/19 Western Electricity Coordinating Council

Base Case Building Power Flow Data Submitter uploads “prerun” files: Area Specific power flow data L&R spreadsheet Any Dynamics model changes/updates Any tie line changes (must be coordinated!!!!) List of significant changes Any additional info that will help with base case compilation Western Electricity Coordinating Council

Area Interchange Schedules BC Hydro Interchange with Northwest 2300 MW Northwest Interchange with BC Hydro -2300 MW Area interchange case specific spreadsheet: located on the team site Western Electricity Coordinating Council

Western Electricity Coordinating Council Extracting Area Data Western Electricity Coordinating Council

The Master Tie Line File Contains data for the following: Branches Transformers Line connected shunts Transformer impedance tables Interface data (Paths) Branch interface data Zones Owners BAAs Area Interchanges Western Electricity Coordinating Council

Western Electricity Coordinating Council Tying It All Together Western Electricity Coordinating Council

Power Flow Solution and Data Checking Tie line check Island check Edit table checks Checkazo.p Mustfix.p Checks.p svdsnap.p Pathmoni.p Dchk Overload check Branches (Chkrating.p & SADD) Paths (Pathmoni.p) DCINTMT.p Insert Gen ID (WSM map) Need data for others Fix owner epcls Fix bad gen owner.p Fix owner–noparticipation.p Qtab correction.p Western Electricity Coordinating Council

PF Data Checking continued PSS®E Users Data InsertLID.p Baseloader.p InsertTurbine.p FillRatingsPSSe.p Contingencies (Operations Cases) Replog & Steady state and Dynamics Dashboard (SADD) PowerWorld Western Electricity Coordinating Council

Base Case Building - Dynamics The Master Dynamics File (MDF) Models Updates in PSLF format Temporary vs. permanent changes Condenser and pump check Composite load models Western Electricity Coordinating Council

Initializing Dynamics Data Reading in the MDF Missing data (updated ID or netted) Duplicate models Initialization Governor errors (check real power limits) Exciter errors (bad voltage profiles) Other messages Western Electricity Coordinating Council

Western Electricity Coordinating Council Running and Plotting A no-disturbance run The DYTOOLS disturbance routine Ringdown (Chief Jo Break) Double Palo Verde Outage (when PDCI flow is N-S) Loss of PDCI (when PDCI flow is S-N) Post-transient solution Standard Disturbances Midway-Diablo and Midway-Gates Comanche-Daniels Park Colorado River – Red Bluff Hells Canyon – Brownlee Double Palo Verde Outage or loss of PDCI DYTOOLS? Western Electricity Coordinating Council

Western Electricity Coordinating Council Plotting Plotting the channel file Searching for the largest deviation (spread) Plotting Parameter Efd – 0.063 PG – 1.0 Spd – 0.000 Other paramters – qg, qsvc, qstc Western Electricity Coordinating Council

Western Electricity Coordinating Council Plotting Western Electricity Coordinating Council

Power Flow Conversions PSS®E Conversion Case Prep (combine SVDs, Net DG, negative transformer types, shift ratings) WECCLF Dummy bus Case IDV Difference Compare PowerWorld EPC Difference Compare Dynamics Western Electricity Coordinating Council

Base Case Building - Comments Types Submitted in EPCL, EPC, .m, or by list Epcl_xtractv21d.p MUST be made to review case Changes to tie lines must be coordinated Extensive data changes Western Electricity Coordinating Council

Files included in ZIP folders Base Case (.sav, .epc, .raw, .pwb) Dynamics(.dyd, e.dyd) ASMAT Annual Study Program Results Log Data Checking (Replog, CaseCheck Dynamics, CaseCheck Powerflow, SADD) Pss_exempt.dat Supplemental.zip Signoff Bubble (.jpg, Bubble_33.drw, Bubble_33.irf) PTI data Templates (Ba data, baseload, composite load long IDs, turbine type) *_pf.idv Loads_*.csv Western Electricity Coordinating Council

Reporting Data Anomalies Master Tie Line File Data Multi-section lines Series Compensation New Phase Shifters PSS Exemptions Dynamics Data Western Electricity Coordinating Council

Western Electricity Coordinating Council Questions? Elena Melloni: emelloni@wecc.biz Nick Hatton: nhatton@wecc.biz Matt Torgesen: mtorgesen@wecc.biz Western Electricity Coordinating Council