Eastern Interconnect Phasor Project

1
Eastern InterconnectPhasor Project

• Status of TVAs Super Phasor Data Concentrator
  and Comprehensive Database
• October 13th, 2005

Tennessee Valley Authority Electric System
Operations James Ritchie Carroll E-mail
jrcarrol_at_tva.gov Phone [phone]
2
Recent Focus

• Functional testing of C37.118 protocol
• Updated Permanent Archival Process
• Data Quality Enhancements
• New PMU Additions
• Web Site Updates
• New Tools

3
C37.118 Testing To Date

• SEL 421
• ?
• Arbiter 1133
• ?
• ABB 521
• ?
• AEP Custom PDC
• ?

4
Updated Data Archival Process

• Currently 1.5 Gigabytes of PMU data are being
  archived daily
• All sub-second data is backed up daily and gets
  stored at an offsite location
• The online data window is currently about 6
  months as more PMUs are added this window will
  get smaller
• Because restorations would need physical tape
  retrieval from offsite location all data is now
  additionally archived onto DVD for quick access
• So if a request comes in for offline data, the
  data can be quickly accessed from the DVD array

5
Data Quality Enhancements

• During testing of data integration with the AREVA
  State Estimator, we found that some of the PMU
  current readings were coming in incorrectly
• These errors were not found up to that point
  because this data wasnt being monitored closely
• The errors were caused by incorrect CT ratios
  entered in the PMU configuration
• These have since been corrected and now the PMUs
  are reporting good current readings
• Additionally more work was done to empirically
  validate readings against SCADA
• More work needs to be done in this area by the
  DMTT for all PMUs

6
New PMU Connections

• Connection Established to 10 New Phasor
  Measurement Units - Real Time Stream Integration
  is in Progress
• American Electric Power
• 5 New PMUs Connection Verified
• Integration Started
• Tennessee Valley Authority
• 5 New PMUs Connection Verified
• Awaiting Configuration
• Con-Edison, Southern Company, Manitoba Hydro,
  ATC, plus many more are already in the process
  installing PMUs and working to connection

7
Web Site Updates

• Demographics Web Site
• https//eipp.tva.com
• Data set download requests now available in
  simple CSV format, as well as XML
• Geographic location and PMU reporting status
  screen

8
Entergy PMU Recovery

• Lost communications with Entergy Data Center at
  Monday, August 29, 2005 20913 EDT

Monday September 12, 2005 651 PM EDT
communications to all PMUs except for
Patterson were restored. Given the magnitude of
that disaster, it only took a remarkable 14 days
for near full recovery of Entergys PMU data!
9
New Tools

• Updated PMU Connection Tester Supporting C37.118

UDP Rebroadcaster
10
Interesting Data Uses
Frequency Excursion Analysis

• September 15th Event

October 4th Event
11
Next Steps

• Setup a Test Environment for Vendors
• More Vendor Testing of C37.118
• External Testing of SPDC C37.118 Stream
• Implementation of Reference Phase Angle
  Recommendations by PRTT
• Setup Common Spot for Helpful Tool Deployment
• Develop New Tools and Applications using Real
  Time data to Support Reliability
• Continued Data Quality Improvements
• Continued Installation of New PMUs