# Presentation: 235602

## Eastern InterconnectPhasor Project

- Status of TVA’s Super Phasor Data Concentrator and Comprehensive Database
- October 13th, 2005

- Tennessee Valley Authority
- Electric System Operations
- James Ritchie Carroll
- E-mail: _[jrcarrol@tva.gov](mailto:jrcarrol@tva.gov)_
- Phone: (423) 751-2827

## Recent Focus

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

## C37.118 Testing To Date

-  SEL 421
-  						
-  Arbiter 1133
-  						
-  ABB 521
-  						
-  AEP Custom PDC
-  						

## 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 PMU’s 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

## 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 wasn’t being monitored closely
- The errors were caused by incorrect CT ratios entered in the PMU configuration
- These have since been corrected and now the PMU’s 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 PMU’s

## New PMU Connections

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

**Notes:**
So, where do we currently stand? We currently have a total of 24 PMU’s connected to the Super PDC.  Here are the current connection stats.  It’s important to note here that AEP expects five more PMU’s online this month and TVA is in the process of installing 12 new PMU’s around Tennessee valley.  Also, in conclusion, please let me say that there were many, many people involved in making all this happen – this took an unprecedented level of cooperation from many people from many departments in all the companies listed here and more.  There were more involved with this than I could possibly begin to thank, but there are definitely a few that really stand out and I think they deserve some recognition:  Rajesh Pudhota from Ameren; Ray Hayes and John Allemong from AEP; Floyd Galvan, Leonard Chamberlin and Steve Winsett from Entergy; Dean Ellis and Jo Chow from New York ISO; Ken Martin from BPA; Manu Parashar from EPG; and from TVA, the DatAWare master Brian Fox, my hardware confidant Tiffany Smith, the demographics web site creator Mehul Thakkar, and a final special thanks to Ken Newberry and Russell Robertson for giving me the freedom to take this project and run with it.  Thank you...

## Web Site Updates

- Demographics Web Site:
- _[https://](https://eipp.tva.com/)__[eipp.tva.com](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

## Entergy PMU Recovery

- Lost communications with Entergy Data Center at Monday, August 29, 2005 2:09:13 EDT

- Monday September 12, 2005 6:51 PM EDT communications to ***all*** PMU’s except for Patterson were restored....  Given the magnitude of that disaster, it only took a remarkable 14 days for near full recovery of Entergy’s PMU data!

## New Tools

- Updated PMU Connection Tester Supporting C37.118

- UDP Rebroadcaster

## Interesting Data Uses

- September 15th Event

- October 4th Event

- Frequency Excursion Analysis

## 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 PMU’s