DOE/OE Transmission Reliability Program. Data Validation & Conditioning

Transcription

1 DOE/OE Transmission Reliability Program Data Validation & Conditioning Jianzhong Mo Kenneth Martin June 3-4, 2014 Washington, DC

2 2 Presentation Introduction of Project Project Status Overview of Bad Data Detection Algorithms 6 Modules Overview of Data Validation Prototype Overview of Error Simulation Utility

3 3 The Problem Phasors are well known to engineers but synchrophasors are not Synchrophasor value dependencies Precise timing source, algorithms, & hardware Systems dependent on real-time communications Delay (latency), bandwidth, errors, & dropouts Need comparability with established systems (SCADA) Wide area, high-speed faster actions Need assurance measurements are correct and Detect and fix data problems

4 4 Introduction Data Validation and Conditioning Project RFP issued in June 2012 Awarded to EPG in December 2012 Completion by August 2014

5 5 Objective Develop, test and prototype various methods for conditioning and validating real time synchrophasor data Applicable to SGIG projects Usable in deployed architectures Include consideration of design & deployment Output includes cleaned data & quality flags

6 6 Project Plan PHASE 1 PHASE 2 PHASE 3 Survey, Conceptual Design & Prototype Development Prototype Demonstration Functional Specifications of the Data Validation System Review Existing SGIG Systems Completed May 2013 Develop Error Simulation Utility Completion May 2014 Document Key Lessons Learned Completion August 2014 Best Practice Recommendations Completed June 2013 Research, Design, Develop and Test Prototype Completed March 2014 Data Validation Prototype Demonstration Completion June 2014 Functional Specification Completion September 2014

7 Algorithms Process & Stages 6 Modules 7 User setup interface parameter entry Data validation flag GPS (Optional) Data Stream Input Module 1 & 2 Communication & Message Format Module 3 Time & Timing Module 4 & 5 PMU Status & Data characteristics Module 6 Measurement Topology Output Config Data with flags Condition data only Comm error Msg order & Msg size sequence Chk word Time good PMU ID Latency ok Missing Samples Stuttering H/L limits Hi Noise Stale data Frequency derivation Volt match Angle match Current sums Power sums Combine flag & data Conditioned data set to NaN for error

8 8 Each Stage Has a Detailed Algorithm Example of message level errors Format Error CRC Error Sample Size Error PMU ID Error New/Removed PMU/Signal Detection

9 9 Data Quality Flag & Output Data quality flag 8 bit Flag for each value Phasor magnitude & angle Frequency & ROCOF Can be sent in 118 stream Q Q S S S S L L Quality good, bad, uncertain, reserved Sub status reason for the quality indication Limit value at H/L limit, cannot move, or ok Bad data set to NaN to prevent further use Dual outputs Output partially conditioned with flags (only fatal errors cleaned) Output with fully conditioned data Quality Sub-status Limit

10 10 PDVC Prototype Workflow C Network Error Detection Message Error Detection Configure Frame Tracking Time & Data Validation Notification & Error Indication Raw, Flagged or Conditioned Data C Latency/ Out of Sequence Validation Time Quality Validation PMU Status Validation Range Validation Stale Validation Noisy Validation Topology -based Validation Quality Flag Assigned

11 11 PDVC Sample Setup Screenshot Example Time Validation Deviation Shifting Latency Data Rate

12 12 PDVC Sample Result Measurement Values Measurement Quality

13 13 Error Simulation Utility (PMU Simulator) Data Source Recorded real data in CSV file format Real time simulation Functionality Replay or Simulate real time C stream Inject errors at protocol level, PMU level, and measurement level Manage PMU/Signal and communication options

14 PMU Simulator Layout 14

15 Overall Project Schedule We are here Within contract schedule! Project is here

16 16 Risk Factors Delay in access to data for demonstrations Available data may not have all the problems for demonstration of full functionality

17 17 Status and Next Steps Phase 1 complete Prototype developed and tested Phase 2 ready for demonstration Develop Error Simulation Utility (complete) Demonstrated PDVC with simulated data (complete) Demonstrate PDVC with real time data Working with BPA on on site testing with real time data Plan to have demonstration with PJM also Phase 3 Function Requirement Report to follow demonstrations

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