August 11, 2008

TPTF

Early Delivery SystemsStatus

Daryl Cote

2TPTF8/11/2008 2

Agenda

• EDS Follow-ups from last meeting

• EDS 2 – Release 3: Telemetry & State Estimator

• EDS 3– Release 5 & 6: SCED / LFC

• Registration Status

3TPTF8/11/2008 3

Frequency Plot 6/25/08

59.92

59.94

59.96

59.98

60

60.02

60.04

60.06

60.08

0900 0930 1000 1030 1100 1130 1200 1230 1300 1330 1400 1430 1500

Hz

Time

Frequency During 6/25/08 EDS3 R6.3 Test

Frequency

First QSE switched to NodalAll QSEs on Nodal

First QSE switched back to ZonalAll QSEs back on Zonal

4TPTF8/11/2008 4

7/15 ICCP Site fail-over results

• Denton & College Station TSPs, and Exelon QSE, had not set up their Taylor links.

• LCRA TSP was only able to support one link at a time. • STEC TSP’s link had to be cycled. No issues thereafter. • STEC QSE was unable to read their base points from us. • AEP QSE link was up, but no data was available. • AEN TSP performed a site failover at the same time as the test.

They came back up after a few minutes.

• Since the test:– QSE & TSP ICCP Associations Completed

• Working through outstanding issues with three MPs

– ICCP High Availability Completed

5TPTF8/11/2008 5

Met Data from WGRs

• Individual detailed letters were distributed to WGRs on Aug 7th

– Letters provided Meteorological data status by resource– Requested response by August 14th on how they will correct the

issues– Deadline for issue correction is October 31st

• Current Status on next two slides

6TPTF8/11/2008 6

Wind Telemetry

• MMS UI Feedback– Concerned about the amount of work needed to view/update

COPs, etc. for multiple resources. Current UI allows user to view multiple days for one unit, not multiple units for one day

– Concerned about the way error and confirmation messages display (not implemented yet)

– Concerned about raw .xml displaying on the Awards tab (not implemented yet)

7TPTF8/11/2008 7

Wind Telemetry

8TPTF8/11/2008 8

Focused State Estimator Testing Dates

Start Date and Time End Date and Time Duration

August 6 12:00 am August 6 11:59 pm 24Hrs

August 12 12:00 am August 14 11:59 pm 72Hrs

August 19 12:00 am August 21 11:59 pm 72Hrs

August 26 12:00 am August 28 11:59 pm 72Hrs

September 2 12:00 am September 4 11:59 pm 72Hrs

September 8 12:00 am September 12 11:59 pm 120Hrs

Please reference the market notice on July 25 titled Focused State Estimator Support Date and Requirements and Continuing SCED Input Requirements

• Results from 8/6 – lower than non-focused days– EDS team will communicate through multiple channels prior to

the next testing date– ERCOT is reinforcing roles / responsibilities internally

9TPTF8/11/2008 9

QSE Telemetry

10TPTF8/11/2008 10

TSP Telemetry

11TPTF8/11/2008 11

Load Observability

AEP were very proactive in providing telemetry and still more to come.

ONCOR have provided majority of their telemetry

All remaining issues are being actively worked by MPs and ERCOT

* All buses included in this list have a load

12TPTF8/11/2008 12

State Estimator- Convergence Rate – June

SE Statistics June 08

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

CONVERGENCE

ERCOT Software Upgrade caused convergence issue

Monthly Convergence: 83.49%

13TPTF8/11/2008 13

State Estimator- Convergence Rate – July

Monthly Convergence: 85.33%

SE Statistics July 08

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

7/1/

08

7/3/

08

7/5/

08

7/7/

08

7/9/

08

7/11

/08

7/13

/08

7/15

/08

7/17

/08

7/19

/08

7/21

/08

7/23

/08

7/25

/08

7/27

/08

7/29

/08

CONVERGENCE

14TPTF8/11/2008 14

MP10 Status

• MP10 forms were due to ERCOT by April 15, 2008• Initiation of network model change process (Transmission Data

Forms as needed) target date of two weeks of ERCOT request

• Status of 179 sites• 70% are complete• 8% need to submit Transmission Data Forms or review corrected packages• 16% are waiting on feedback/corrections by ERCOT• 6% are non-responsive

• Submittals to include• MP10 Form w/ all boxes checked if approved• If not approved, briefly write issues on MP10 form• If ERCOT model change required:

• Complete ERCOT Transmission Data Form • Send correct updated operational (non-relaying) one-line for facility

MP10 STATUS as of August 1, 2008

RED (Missing)

RED (Non-Responsive)

AMBER (Feedback Required)

GREEN (Verification Complete orModifications Needed from ERCOT)

15TPTF8/11/2008 15

MP10 – Next Steps

Updated MP10 Metric Criteria

The Readiness Team will review documentation that verifies that all participating resources in the Texas Nodal Market have completed their mapping of Resources to Resource Nodes and Resources to EPS Meters.

Readiness will be achieved when each resource has either mapped their Resources or have accepted the existing default configuration.

It is the intent of this metric to ensure that the settlement of Resources involved in a net metering configuration can be executed as specified by the Nodal Protocols.

Target Completion: Receipt of Network Model One-Line (NMO) + 30 Days

16TPTF8/11/2008 16

MP11 Status

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

TOTAL GEN LOAD

RAG for RARF 8/01/08

GREEN (Tier 1 Validation Completed)

AMBER (Missing or Inaccurate data)

RED (Missing Critical Data)

RED (Non-Responsive)

MP11 Status as of August 1, 2008

RED (Non-Responsive)

RED (Missing Critical Data)

AMBER (Missing or Inaccurate data)

GREEN (Tier 1 Validation Completed)

• Review/Validation process and timing• Business review by WCS (may need immediate corrections by MP in order

to load into RARF database)• EDS critical data review continues with feedback to MP• Technical review by data consumers within ERCOT in progress

• Status of 221 sites• 77% Tier 1 Validation is complete• 18% Contain missing or inaccurate data• 2% Missing critical data• 3% Non-responsive

17TPTF8/11/2008 17

MP-11 - Ongoing Registration Data Screening

REGISTRATION DATA PROCESSD

ata

Con

sum

ers

(e.g

. MM

S,

EM

S, N

MM

S)

Reg

istr

atio

n /

AM

Tea

mE

DS

Tea

mM

arke

t P

artic

ipan

t

MP Sends Rarf

Tier 1 Screen Pass?

MP Corrects and resends

No

Loaded to RARF DB

Yes

Synchronize RARF DB with

NODAL TEST DB

Tier 2 Screen Pass?

Data Stubbed in NODAL TEST DB

Issue recorded in Data Issues Log

Notify Reg Team[this will be a

weekly review]

Tier 3 Screen Pass?

Consumer Test Teams Notified

No

Project Proceeds

Notify EDS TeamNo

Yes

Review with MP

Project Proceeds

Stop

Review Issues are with MP

Yes

NoSent back to EDS team for further

analysis

Terms:Tier 1 Screen – Screen basic data such as resource names, QSE General

information and form completenessTier 2 Screen – Screen data quality in isolation such as ramp rates, CC

configurations and transitionsTier 3 Screen – Test data quality and compatibility with consumer application.

Data Consumer – Application or system that will use the data (e.g. EMS, MMS, etc)

Separate Process

18TPTF8/11/2008 18

MP11 – Next Steps

Updated MP11 Metric Criteria

The intent of this metric is that ERCOT has all registration related data for all market participants intending to participate in the Nodal Market on record.

Updated MP 11 Metric Criteria: To work towards final acceptance of Resource Registration documents to include:• Acceptance of RARF• Acceptance of Resource Network Topology Registration• Non-Modeled Generation Declaration• Resource Decision Making Authority Attestation

Target Completion: December 31, 2008