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CCET Discovery Across Texas Project Electric Power Group Synchrophasor Project Plan and ERCOT Activities. Presented to Kent Saathoff, Bill Blevins, John Adams, Prakash Shreshtha - ERCOT Austin, TX August 8, 2012 Presented by: Vikram Budhraja, Prashant Palayam - EPG.
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CCET Discovery Across Texas Project Electric Power Group Synchrophasor Project Plan and ERCOT Activities Presented to Kent Saathoff, Bill Blevins, John Adams, Prakash Shreshtha - ERCOT Austin, TX August 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. Focus: Visualization, Tools, Analysis * Source: Project Narrative
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
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 Focus: Visualization, Tools
Network Status & Upgrade Plans Current Status • PMUs installed at 16 substations (21 locations originally planned) • Additions planned at 17 substations • Plan to add Texas Tech – Lubbock project to expand wind-related data collection • ERCOT presently running on RTDMS v5 ERCOT System Upgrade Plans • Migrate to production grade hardware configuration • Configuration options prepared for ERCOT – decision pending • Upgrade to RTDMS 2012 • Installation support TO Upgrade Plans • ONCOR planning RTDMS installation • RTDMS 2012 client installations at TO’s • PMU additions RTDMS Training for Operators – propose ERCOT as training host Review and Update RTDMS Daily Reports
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 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) 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
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 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
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
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
Back-Up Slides • RTDMS Platform Architecture • ERCOT Configuration Options for Production System
ERCOT RTDMS Configuration Options 1 - Minimal Configuration RTDMS Server ePDC DataBase ISG PMU data stream from TO PDCs RTDMS Clients & Other Services
ERCOT RTDMS Configuration Options 2 – Redundant Production System RTDMS Server ePDC DataBase ISG PMU data stream from TO PDCs RTDMS Clients & Other Services Failover Clustered Configuration Failover Clustered Configuration Failover Clustered Configuration Load Balance Configuration
ERCOT RTDMS Configuration Options 3 - Redundant Production plus Staging/Test Systems RTDMS Server ePDC DataBase ISG PMU data stream from TO PDCs RTDMS Clients & Other Services Failover Clustered Configuration Failover Clustered Configuration Failover Clustered Configuration Load Balance Configuration Data stream from ePDC Staging System Data stream from ePDC Test System
ERCOT RTDMS Configuration Options 4 - Fully Redundant Production & Staging plus Test System RTDMS Server ePDC DataBase ISG PMU data stream from TO PDCs RTDMS Clients & Other Services Failover Clustered Configuration Failover Clustered Configuration Failover Clustered Configuration Load Balance Configuration Data stream from ePDC Staging System Test System