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Market Trials Update

NATF

June 1, 2010

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Agenda

• Operational Scenarios for June

• 168-Hour Test (preliminary discussion)

• MOTE Discussion

• 2-Hour LFC Test

• June / July Activities

• SCED Update

• Update on COP Expectations Discussion (2-7 days out from the Operating Day)

• Combined Cycle Limitation for Market Trials

Market Trials 2010 Roadmap

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Operational Scenarios

Operational Scenarios

• DAM/RUC/SASM Scenarios– As described in the DAM/RUC/SASM market trials handbook

(located at http://nodal.ercot.com/readiness/markettrials/dam/index.html), during June we will be exercising operational scenarios on Tuesdays and Thursdays in market trials

• Two scenarios were added after the handbook was published (suggestions for additional scenarios were solicited from market participants)

• June 17 scenarios were moved to different dates

• RTM / LFC Scenarios– The Real Time operational scenarios will occur during the remaining

LFC tests– The scenarios to be conducted in June’s 8 hour LFC are detailed in

the 8-Hour LFC Test Approach document posted at: http://nodal.ercot.com/readiness/markettrials/rtm/index.html

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DAM/RUC/SASM Operational Scenarios

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DAM/RUC/SASM Operational Scenarios

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RTM / LFC Operational Scenarios

Issue EMBP Flags• This operational scenario is a system-wide exercise to confirm

that QSEs with Resources are capable of receiving EMBP– SCED failure will be simulated to the extent that the ERCOT

Operator will enter an EMBP incremental MW value (based on the Generation to be Dispatched as required over the next five-minute interval)

– Qualified Scheduling Entities (QSEs) will be sent these Base Points via telemetry, along with the system-wide EMBP status flag.  

• ERCOT initially proposes implementing the Emergency Base Point scenario for at least 15-30 minutes,– Duration of the scenario may be shortened or extended as deemed

appropriate by the ERCOT – ERCOT may reach out to one or more Market Participants while

the scenario is being exercised to confirm that the system-wide EMBP flag and incremental MW value are being received correctly

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RTM / LFC Operational Scenarios

Issue RRS Deployments• Confirming that QSEs with Resources (Generation and Controllable Load) are

capable of receiving and responding to RRS deployments. – Nodal Non-Spinning Reserve Service (NSRS) is out of scope for this scenario. – The testing of deployments for NSRS may be included as an operational

scenario during the 48-Hour LFC Test in July 2010. • SCED will continue to dispatch Base Points based upon the required

Generation to be Dispatched and Energy Offer Curves (EOCs)• ERCOT will inform QSEs via hotline call regarding the start time for

conducting this operational scenario– QSEs will respond to the deployment instruction by updating their telemetered

Ancillary Service (AS) Schedules for RRS to reflect the specified deployment amounts

– QSEs will need to provide these updates back to ERCOT within one minute per Nodal Protocols Section 8

– Approximately 15 to 20 minutes following the RRS deployment instruction, ERCOT will recall RRS, and QSEs will respond by updating their telemetered AS Schedules for RRS to reflect the recall MW

– As with the initial deployment, QSEs should provide the updates back to ERCOT within one minute

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Preliminary 168 Hour Test Discussion

Preliminary Discussion Regarding the 168-Hour Test

• ERCOT continues over the next 3 weeks to discuss details regarding this tests

• Today’s discussion will be centered on the Market’s questions, concerns and comments

• ERCOT will publish the 168-Hour Test Handbook by June 30, 2010

• ERCOT will review the handbook at a high level at the first NATF in July

• The 168-Hour Test Workshop will take place in tandem with MRS 5 on July 28, 2010Details: http://www.ercot.com/calendar/2010/07/20100728-MT

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Market Operations Test Environment

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MOTE Update

• Clarification on testing during Cutover– During Market Trials, the Nodal Production environment is dedicated to the market and assisting them

with readiness for go-live– As ERCOT and the market transition from Market Trials to Cutover on October 1, ERCOT will need to

have the flexibility to perform final preparations on the environment to ensure complete readiness for go-live

– ERCOT is not committing to any Market facing activities or Nodal production environment availability for systems that are pre-go-live during cutover

– This does not mean:• ERCOT will completely shut down the environment• That we won’t or will perform and market facing activities (e.g. additional LFC tests, DAM runs, etc).

– ERCOT will keep telemetry up and running and expects the same of the market– Key take away: Flexibility

• Market Operations Test Environment (MOTE)– As previously stated, ERCOT will support the MOTE environment during business hours from its

targeted release date on 6/30/2010 through and beyond Go-Live– Mote will provide the following functionality to the Market

• Testing of connectivity and authentication / authorization• Web Service and MMS User Interfaces to MMS• MMS validation of all submitted transactions• Ability to query submitted transactions• CRR User Interface

– The environment will not:• Run any of the Market Engines (DAM, SCED, RUC, CRR)• Host any orchestrated tests• Provide integration with any system beyond MMS (e.g. outage scheduler, registration, etc)

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2-Hour LFC Test Update

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2-Hour LFC Test Update

2-Hour LFC Test Update

Test Activities Approx Timeline

Market WebEx start 8:00 AM

ERCOT - MP pre-test troubleshooting period 8:00 AM - 11:15 AM

Test start 11:15 AM

Zonal-Nodal cutover 11:15 AM - 11:55 AM

System frequency controlled by nodal systems 11:55 AM - 12:25 PM

Nodal-Zonal cutover 12:25 PM - 1:00 PM

Test end 1:00 PM

Market WebEx end 1:15 PM

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2-Hour LFC Test Update

2-Hour LFC Test Update (continued)

Constraints (activated in both Nodal and Zonal) Start Time

Garrott - Midtown OC3 Loss of Greens Bayou  - Gable and Hardy - Crocket 138KV overloads Midtown - Garrott 138KV - 102% of 317 MVA rating.

10:45 AM

Bellaire Autotransformer OC3 Loss of Bellaire 345/138KV autotransformer 2 overloads Bellaire 345/138KV autotransformer 4 - 101% of 600 MVA rating.

11:45 AM

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2-Hour LFC Test Update

2-Hour LFC Test Update (continued)

Common ICCP Issues Identified/Solved During the Test   On/Off status incorrect for LBST/RBST points   Resource Status Codes (RSTs) coming in as SUSPECT   OFF RST being sent for units that were online and generating MW RST of ON instead of ONREG being sent for units with REG Responsibilities RST of ONREG being sent for units in hours where they had no REG

Responsibility Non-zero LSLs being sent for WGRs   HSLs for WGRS being set to capacity rather than un-curtailed MW output MPs updating REG Responsibilities slowly  

RegUp & RegDown Responsibilities switched for one another

 

AS Responsibilities not lining up between Nodal and Zonal (i.e., wrong AS Type or wrong MW value)

90 Day Outlook : June Market Activities

Functional Area Real-Time Market

Congestion Revenue Rights

Day-Ahead Market

Reliability Unit Commitment

Outage Scheduler

COMS/Settlements

Network Modeling

Nodal Reports

Credit

Full Integration

Targeted Activities for June 2010• Operational scenarios executed• 8hr LFC closed loop test executed• ERCOT executes July Monthly CRR

Auction• DAM / DRUC Continues 5x / weekly• SASM executed as needed• ERCOT executes limited HRUC• Protocol timelines on a best effort basis

Jan Feb Mar Apr May June July Aug

90 Day Outlook : July Market Activities

Functional Area Real-Time Market

Congestion Revenue Rights

Day-Ahead Market

Reliability Unit Commitment

Outage Scheduler

COMS/Settlements

Network Modeling

Nodal Reports

Credit

Full Integration

Targeted Activities for July 2010• Exercise ‘Normal State’ processes

and procedures, including weekends• 48hr LFC closed loop test executed• DAM / DRUC executes 7x / weekly for

two weeks• ERCOT executes HRUC 7x24 during 7

day weeks• Protocol timelines during 7 day

weeks• ERCOT executes August Monthly CRR

Auction• SASM executed as needed

Jan Feb Mar Apr May June July Aug