ROS Report to TAC

October 5, 2007

OutlineGeneral ItemsNodal Operating GuidesOGRR192Document control issuesProposed revisions to Texas Nodal

Telemetry Criteria and State Estimator Performance Stanadards

General ItemsOGR 198 – Setup work group to address

comments concerning shedding firm load via SCADA

Work group will address PUCT request to review load shedding procedures

Wind Survey Results – still awaiting responses

NERC will provide interpretation of standards

Nodal Operating Guides NOGRR001, Nodal Operating Guides – Section 1,

Overview (Vote) NOGRR002, Nodal Operating Guides – Section 2,

System Operations and Control Requirements - Remand back to ROS to address ERCOT Staff comments (Vote)

NOGRR003, Nodal Operating Guides – Section 3, Resource Testing and Qualification Procedures (Vote)

NOGRR004, Nodal Operating Guides – Section 4, Emergency Operation (Vote)

NOGRR005, Nodal Operating Guides – Section 5, Planning (Vote)

NOGRR006, Nodal Operating Guides – Section 6, Disturbance Monitoring and System Protection (Vote)

NOGRR007, Nodal Operating Guides – Section 7, Telemetry and Communication Vote)

Nodal Operating Guides NOGRR008, Nodal Operating Guides – Section 8,

Attachment A, Detailed Black Start Information (Vote) NOGRR009, Section 8, Attachment B, Relay Misoperation

Report (Vote) NOGRR010, Section 8, Attachment C, Turbine Governor

Speed Tests (Vote) NOGRR011, Section 8, Attachment D, Seasonal Unit Net

Real Power Capability Verification (Vote) NOGRR012, Section 8, Attachment E, Biennial Unit

Reactive Limits (Lead and Lag) Verification (Vote) NOGRR013, Section 8, Attachment F, Seasonal Hydro

Responsive Reserve Net Capability Verification (Vote) NOGRR014, Section 8, Attachment G, Load Resource

Tests (Vote) NOGRR015, Section 8, Attachment H, Unit Alternative

Fuel Capability (Vote)

Nodal Operating GuidesNotice of NOGRR Rejections:

– NOGRR016, Section 8, Attachment I, Security, Facilities, and Connectivity of WAN Systems

– NOGRR017, Section 8, Attachment J, ERCOT Data Sets

Request that proposed changes to NOGRRs and NPRRS that deviate from current operating practices be remanded to ROS

Operating GuideOGRR192, Combustion Turbine

Governor Performance Test Forms (Vote)

Issues With Document Control Criteria, Handbooks, Standards (Not NERC or

TRE Standards), Work Papers etc. Quasi Requirements

– Consequences for not meeting?– Who is monitoring compliance?

No defined owner for documents No control process for updating document Undefined voting structures Potential for conflicting information Duplication of effort

Document Change Timeline September 10, 2007 – ERCOT staff submitted

changes to existing Texas Nodal Telemetry Criteria and State Estimator Standards for comment

September 17, 2007 - ROS hosted workshop September 24, 2007 - NDSWG hosted

workshop October 1, 2007 - ROS hosted workshop October 4, 2007 - ROS approved Telemetry

Criteria via E-Mail

Texas Nodal Market State Estimator Standards Postponed vote due to potential

duplication or conflict with Nodal Protocols

Texas Nodal Market Telemetry CriteriaROS voted by E-Mail to approve Texas

Nodal Market Telemetry Criteria– Affirmative 13 (70% weighted)– Negative 3 (30% weighted)– Abstain – 1

Dissenting comments concerning performance metrics and response times

ROS setting up process to monitor and update metrics

Texas Nodal Market Telemetry Criteria Section B Requirements:

– R6, Minimum Telemetry Criteria (Vote)– R7, Telemetry Availability (Vote)– R9, Critically Important Telemetry

(Vote)– R10, Availability for Critically Important

Telemetry (Vote)– R13, Requests for Additional

Telemetry (Vote)

Questions?