Presented to Kent Saathoff, Bill Blevins, John Adams, Prakash Shreshtha - ERCOT Austin, TX
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Transcript of Presented to Kent Saathoff, Bill Blevins, John Adams, Prakash Shreshtha - ERCOT Austin, TX
CCET Discovery Across Texas Project Electric Power Group
Synchrophasor Project Plan and ERCOT Activities
Presented toKent Saathoff, Bill Blevins, John Adams, Prakash Shreshtha - ERCOT
Austin, TXAugust 8, 2012
Presented by:Vikram Budhraja, Prashant Palayam - EPG
Synchrophasor Project Deliverables*
A method for establishing and maintaining a reliable synchrophasor network to provide real-time dynamic information on large-scale wind resources and their impact on the transmission grid
The use of synchrophasor measurements to identify precursor conditions to undesirable grid performance and behavior, or to grid interruptions
Defining the value of the demonstration in replicating and transferring lessons learned for wind dynamics monitoring and management to other parts of the U.S.
* Source: Project Narrative
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Focus: Visualization, Tools, Analysis
EPG Project Plan
Principal investigator for the Synchrophasor Component of the CCET Project – Electric Power Group (EPG)– Executive Lead – Vikram Budhraja– Project Lead – John Ballance
Key Planned Activities– Establish a Robust Synchrophasor Network
• Simon Mo / Frank Carrera– Validate and Manage the Synchrophasor Data
• Ken Martin / Prashant Palayam– Perform Analysis and Assessment
• Prashant Palayam– Policies/Procedures/Reports
• John Ballance– Synchrophasor Team Coordination
• John Ballance
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Establish a Robust Synchrophasor Network
Upgrade ERCOT to RTDMS 2012 Support ERCOT transition to Production Grade
System Support TO Deployments Provide RTDMS Training Develop Generator Model Validation Module
– Based on UT Arlington algorithms
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Focus: Visualization, Tools
Network Status & Upgrade PlansCurrent StatusPMUs installed at 16 substations (21 locations originally planned)
― Additions planned at 17 substationsPlan to add Texas Tech – Lubbock project to expand wind-related data collectionERCOT presently running on RTDMS v5
ERCOT System Upgrade PlansMigrate to production grade hardware configuration
– Configuration options prepared for ERCOT – decision pendingUpgrade to RTDMS 2012
– Installation support
TO Upgrade PlansONCOR planning RTDMS installationRTDMS 2012 client installations at TO’sPMU additionsRTDMS Training for Operators – propose ERCOT as training hostReview and Update RTDMS Daily Reports
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Validate and Manage the Synchrophasor Data
Validate and Calibrate PMU measurements Data communications Data Synchronization Network performance – reliability, drop-outs, latency Develop phasor data performance management
process and standards
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Focus: Validate Data, Improve Data Quality
Perform Analysis and Assessments
Perform post-event analysis and forensics on grid events and disturbances
Develop baseline performance measures for wind generation Perform baseline angle-separation and alarm-limit analyses for the
ERCOT grid Assess the impact of wind generation on system inertial and
governor frequency response Assess low voltage ride through performance of wind generation Detect, monitor and analyze power system oscillations and the
interaction of wind generation Validate monitored dynamic response with model-based predictions
of generator response to disturbances (model validation)
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Focus: Events, Limits, Baseline Performance
Detail on EPG Planned Activities in Support of ERCOT
Analysis and validation of PMU communications network and data – to make data “Production Grade”
– Validate data accuracy– Evaluate quality and reliability of phasor data– Assess causes of data loss/data error– Develop phasor data performance standards and monitoring tools
Perform baseline analysis of phasor data to establish alarm limits for RTDMS– Identify normal and extreme operational characteristics– Recommend angle-pair alarm limits for safe operations– Develop recommended mitigation measures to reduce system stress to safe levels
Perform post-event analysis of grid events– Assess the impact of wind generation on system inertial and governor-driven frequency
response– Assess low voltage ride through capability of generation (esp. wind generation)– Detect, monitor and analyze power system oscillations and the interactions of wind generation
(e.g., 1.8 Hz oscillations in west Texas, 5.5 Hz oscillations near wind generators)– Compare monitored dynamic response with model-based predictions of system performance
(model validation) Evaluate PMU data to determine optimal placement and future monitoring needs
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Policies/Procedures/Reports
Phasor data repository design and implementation requirements and data archiving policies
Data sharing policies (inside and outside ERCOT) Phasor data management policies (e.g., PMU naming convention,
change management) PMU location selection principles and criteria Communications/outreach plan for the Project Presentations for NASPI, DOE, and industry (e.g., IEEE, ASME) Produce reports on technical and operational issues learned Produce final report for the Synchrophasor Component
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Focus: Knowledge and Technology Transfer
Additional Topics for Discussion
Integration with EMS/SCADA Event Library and Operating Procedures Operator Training Based on Event Library Phasor Grid Dynamics Analyzer (PGDA) Training Applications and Tools
– Intermittent Generation Monitor– Voltage Stability Monitor Using Phasor Measurements (no models)– Cyber Security
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Proposed Team Meeting Schedule
Monthly teleconference calls to coordinate activities– Fourth Tuesday of each month at 1:00-2:00 PM Central Time
• August 28, October 23, November 27
Quarterly in-person one-day meetings– First meeting proposed for late September
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Action Items / Next Steps
ERCOT to advise when it is ready for RTDMS 2012 upgrade, and EPG to support upgrade
ERCOT to provide EPG access to ERCOT real-time PMU data stream
ERCOT to provide EPG with State Estimator save-files for one historical year as basis for baseline study
EPG to provide RTDMS training and support review and update of RTDMS reports
EPG to closely coordinate analysis and sharing of results with ERCOT
Leverage EPG knowledge from other engagements in support of ERCOT
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Back-Up Slides
RTDMS Platform Architecture ERCOT Configuration Options for Production System
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RTDMS Platform System Architecture
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ERCOT RTDMS Configuration Options 1 - Minimal Configuration
ePDC RTDMS Server
DataBase ISG
PMU data stream from TO PDCs
RTDMS Clients
&Other
Services
ERCOT RTDMS Configuration Options 2 – Redundant Production System
PMU data stream from TO PDCs
Failover Clustered
Configuration
ePDC RTDMSServer
DataBase
Failover Clustered
Configuration
Failover Clustered
Configuration
ISG
Load Balance Configuration
RTDMS Clients
&Other
Services
ERCOT RTDMS Configuration Options 3 - Redundant Production plus Staging/Test Systems
PMU data stream from TO PDCs
Failover Clustered Configuration
ePDC RTDMSServer
DataBase
Failover Clustered Configuration
Failover Clustered Configuration
ISG
Load Balance Configuration
Test System
Staging SystemData stream from ePDC
Data stream from ePDC
RTDMS Clients&
Other Services
ERCOT RTDMS Configuration Options 4 - Fully Redundant Production & Staging plus Test System
PMU data stream from TO PDCs
Failover Clustered Configuration
ePDC RTDMSServer
DataBase
Failover Clustered Configuration
Failover Clustered Configuration
ISG
Load Balance Configuration
Test System
Staging System
RTDMS Clients&
Other Services
Data stream from ePDC