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NMT Network Operations Modeling & Telemetry. TAC Meeting February 2007 By Raj Chudgar, ERCOT. NMT – Network Operations Modeling & Telemetry - Project. Topics to Cover Network Model Data Issues Critical Measurements Telemetry Analysis Measurement Weights Modeling.

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nmt network operations modeling telemetry

NMTNetwork Operations Modeling & Telemetry

TAC Meeting

February 2007

By Raj Chudgar, ERCOT

nmt network operations modeling telemetry project
NMT – Network Operations Modeling & Telemetry - Project

Topics to Cover

  • Network Model Data Issues
  • Critical Measurements Telemetry Analysis
  • Measurement Weights Modeling

Network Operations Modeling & Telemetry

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NMT – Network Operations Modeling & Telemetry - Project

Network Model Data Issues

Network Operations Modeling & Telemetry

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NMT – Network Operations Modeling & Telemetry - Project

Model Data Issues – as of 01/26/2007

  • Began with 200+ manually entered issues in Mid-August 2006
  • Developed the Automated Query Process to find additional issues
    • Ran First Case from September 2006 thru October 2006
      • Generated 4000 new issues
      • NMT Closed 78% before running next case
    • Ran Second Case from November 2006 thru December 2006
      • Generated 1100 new issues
      • Total baseline is 5400 issues
      • NMT has Closed 4100+ or 77% of new baseline
    • Remaining issues
      • 319 Assigned to ERCOT to resolve internally
      • 882 Assigned to MP to email this week
    • Next Case to run from January 2007 thru mid-February 2007
  • Next Steps
    • Begin contacting QSEs
    • Document NMT processes to hand over to ERCOT Operations
    • Begin wrap of NMT project to end on 3/31/2007

Network Operations Modeling & Telemetry

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NMT – Network Operations Modeling & Telemetry - Project

Network Model Data Issues Status – by MP

Network Operations Modeling & Telemetry

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NMT – Network Operations Modeling & Telemetry - Project

Critical Measurements Telemetry Analysis

Network Operations Modeling & Telemetry

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NMT – Network Operations Modeling & Telemetry - Project

Critical Measurements Telemetry Analysis

  • Spreadsheet Feedback
    • Continuing to work with each of the Market Participants to:
      • collect and document comments and feedback
      • clarify questions
      • perform additional analysis
  • Recent emailing and MP contact in January 2007
  • Next steps:
    • Continue to implement modeling changes as a result of analysis
    • Complete documentation of feedback by end-of-February 2007
    • Publish results and schedules by end-of-March 2007

Network Operations Modeling & Telemetry

nmt network operations modeling telemetry project6
NMT – Network Operations Modeling & Telemetry - Project

Critical Measurements Telemetry Analysis

Network Operations Modeling & Telemetry

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NMT – Network Operations Modeling & Telemetry - Project

Measurement Weights Modeling

Network Operations Modeling & Telemetry

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NMT – Network Operations Modeling & Telemetry - Project

Measurement Weights Modeling

Analysis and Progress Update

  • Setup Tuning Environment with near real-time feeds from Production
    • Measurement weights were re-defined
    • Requires software change to add plausibility checks on negative load telemetries
    • Changed the limits for a set of unit capability curves
  • Tuning Environment Results
    • Bus mismatches (Mw/Mvar) after SE convergence are reduced
    • The maximum difference in Mw/Mvar flows between SE and Power Flow (RTCA base case) are reduced
    • The number of voltage violations on the RTCA base case are reduced
    • The performance index was improved.
  • Implementation Plan
    • Test in the ERCOT ITEST environment in February 2007 and promote to ERCOT Production in March 2007

Network Operations Modeling & Telemetry

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NMT – Network Operations Modeling & Telemetry - Project

Measurement Weights – Point in time –

16 Hour Study Comparison to Production

Network Operations Modeling & Telemetry

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NMT – Network Operations Modeling & Telemetry - Project

Measurement Weights – Point in time –

16 Hour Study Comparison to Production

Network Operations Modeling & Telemetry

nmt network operations modeling telemetry project11
NMT – Network Operations Modeling & Telemetry - Project

Measurement Weights – Point in time –

16 Hour Study Comparison to Production

Network Operations Modeling & Telemetry

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NMT – Network Operations Modeling & Telemetry - Project
  • Summary
    • Major Model clean-up underway
      • Target to complete by 3/31/2007
    • Major effort to reduce critical measurements and improve observability underway
      • Target to have all justifications and schedules for new implementations by 3/31/2007
      • Implementation schedule will be published end of 1Q2007
    • Measurement Weights tuning recommendations to be implemented into Production March 2007
    • ERCOT will continue to provide progress reports to TPTF, TAC, and ROS on a regular basis

Network Operations Modeling & Telemetry

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