crr model building process bradley bell crr engineer

CRR Model Building CRR Model Building ProcessProcess

Bradley BellCRR Engineer

Intro: Model Building Intro: Model Building ProcessProcess

Model Building EnvironmentModel Building TimetableBuilding Contingency FileOutages / Outage Selection

ProcessRunning Topology ProcessorPost Processing Model

OverviewOverview

NMMS Database

Topology Processor

Transmission Outages

CRR Model

Model Building Model Building EnvironmentEnvironmentCRR Model Building Server

◦- IMM◦- TP

Snapshot of NMMS modelOne instance of NMMS model

Timeline (Monthly Model) Timeline (Monthly Model) PROCESS HOURS

Build Contingency File 16 hours

Outage Selection 3-8 hours

Run Topology Processor 24 hours

Post Process Model 16 hours

• Model building process will start 6-8 business days before model posting date on CRR calendar.

Outage Pull DateOutage Pull DateMonthly Auction Outage Pull Date

Dec 2010 10/ 6 /2010

Jan 2011 11/16/2010

Feb 2011 12/14/2010

Mar 2011 1/25/2011

Apr 2011 2/19/2011

May 2011 3/11/2011

Jun 2011 3/30/2011

Jul 2011 5/27/2011

Timeline (Annual Auction) Timeline (Annual Auction) 1st Model HOURS


Outage Selection 3-8 hours



2nd – Nth Model HOURS


Outage Selection 0 hours



Create Contingency FileCreate Contingency File

NMMS Model CIM Model

Contingency

Building Program

CIM Model Including

Contingencies

Create NOMCR containing CIM

Model w/contingenci

es

OUTAGESOUTAGES

Outage QueryOutage QueryWHERE outage.CATEGORY = 'Transmission‘ AND outage.planned_end_date >=

(ADD_MONTHS (TRUNC (LAST_DAY (SYSDATE) + 1), 1)) -- this gives you the current month plus 2 AND outage.planned_start_date <=

(ADD_MONTHS (TRUNC (LAST_DAY (SYSDATE) + 1), 2))-- this gives you the

current month plus 3 AND outage.status IN ('Apprv', 'Accpt')

OR ( outage.status = 'Withd’) AND outage.planned_end_date >= (ADD_MONTHS (TRUNC (LAST_DAY (SYSDATE) + 1), 1)) -- this

gives you the current month plus 2

AND outage.planned_start_date <= (ADD_MONTHS (TRUNC (LAST_DAY (SYSDATE) + 1), 2)) -- this

gives you the current month plus 3

AND outage.actual_start_date IS NOT NULL AND outage.actual_end_date IS NULL AND outage.CATEGORY = 'Transmission');

Outages / Outage Selection Outages / Outage Selection ProcessProcess Nodal Operating Guides 5.5(6): System Modeling Information

(6) Congestion Revenue Right (CRR) Network Model Outage determination uses network topology of the CRR Network Model identified by ERCOT. This must include Planned Outages of Transmission Elements approved by ERCOT at the time the CRR Network Model is being built and that demonstrate significant impact to the transfer capability during the effective period. ERCOT will consider including Outages in the CRR Network Model that are scheduled to occur in the relevant time period and meet one or more of the following criteria:

(a) Consecutive or continuous approved Outages greater than or equal to five days;

(b) Approved Outages which include Transmission Elements included in

the definition of a Hub; (c) Approved Outages which include Transmission Elements in a 345

kV Transmission Facility; (d) Approved Outages that require the use of a Block Load Transfer

(BLT); and (e) Any other approved Outage that has been determined by ERCOT to

carry a substantial risk of causing significant congestion.

Gantt ChartGantt Chart

Outage DatesOutage Dates

Nov. 6 outages Nov 12. outages

Line A 138kV Line A 138kV

Line B 138kV Line X 138kV

Line C 345kV Line Y 345kV

Line D 69kV Line Z 69kV

Outage Date SelectionOutage Date SelectionMarket Operator (MO) uses the base case

flows in the On-Peak SSWG case for the appropriate year and season to qualitatively estimate the severity of the outaged lines.

MO chooses the worst day of the month based on the evaluation from the step above as well as special consideration given to (in descending order) outages involving:◦ Lines in the W->N constraint ◦ Lines in the N->H constraint◦ Lines involved in other 2010 CSCs/CREs

MO imports the outages into TP the and builds the network model based on those outages.

Topology ProcessorTopology Processor

Create a basecase model and a model with outages

Insert dynamic ratings for each weather zone from 10 year historical average

Create RAW file and CRR output files

Post Process ModelPost Process ModelManually Create

◦Flowgate rights list and definition◦Contingency list and definition◦Non-Thermal Constraints list and

definition◦Monitored Lines and Transformers◦CRR to Operations name mapping

document◦Model Comparisons

QUESTIONS?QUESTIONS?

crr model building process bradley bell crr engineer

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