OpenPDC

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The openPDC is a complete set of applications for processing streaming time-series data in real-time. The name stands for "open source phasor data concentrator" and was originally designed for the concentration and management of real-time streaming synchrophasors. Due to the system's modular design, the openPDC can be classified as a generic event stream processor.

Contents

History

The openPDC is based on the SuperPDC which was developed by the Tennessee Valley Authority starting in 2004. The openPDC officially launched on October 7, 2009. [1] The first stable release of the openPDC was made available on January 28, 2010. [2] Then on February 23, 2010, AREVA T&D announced that they would be providing commercial support for the openPDC. Finally, on April 1, 2010, the Grid Protection Alliance inherited development of the openPDC and entered into a contract with the North American Electric Reliability Corporation in an effort to further enable its use as a distributed system.

Operation

The phasor data concentrator runs as a Windows service. The service is responsible for managing the life cycle of adapters that create and process the streaming phasor measurements. Adapters are split into three layers: [3] [4]

  1. The input adapter layer is typically responsible for receiving data from an outside source such as a phasor measurement unit. That data is used to create measurements which are sent to other adapters to be processed or archived.
  2. The action adapter layer is typically responsible for concentration and processing of the input measurements. Adapters in this layer can also introduce new measurements to the system, just like adapters in the input adapter layer.
  3. The output adapter layer is typically responsible for archival of measurements received from the input adapter layer and the action adapter layer.

These adapters can be configured using any one of three supported database systems: Microsoft SQL Server, MySQL, and Microsoft Access. [5]

Features

The openPDC implements a number of standard phasor protocols which can be used to receive data from devices. The supported protocols are IEEE C37.118 (v1.0 and Draft 6), IEEE 1344, BPA PDCstream, FNET, SEL Fast Message, and Macrodyne. [3] There is also a built-in concentration engine which sorts the real-time data into frames based on the timestamp associated with each measurement. The sorted measurements can then be streamed to other applications using either IEEE C37.118 or BPA PDCstream. [6] The system is capable of concentrating over one billion measurements per day coming from over 100 phasor measurement units across the Eastern Interconnection. [7] [8]

The project includes a historian for data archival. The files produced by the historian can later be analyzed using Hadoop. [3] The historian is also designed to be used in distributed systems, having a single node dedicated to archival and several others sending concentrated measurements to the central archive. This design even allows for its use in any distributed system enabling one PDC to filter measurements to another that is running a resource intensive adapter. [9] The local historian provides web services which can be used to monitor the data being archived in real-time. [10] [11]

The data quality monitoring adapters provide information about measurements entering the concentrator that have flat-lined, gone out of a specified range, or entered the concentrator with a bad timestamp. [12]

Applications

Applications included in the openPDC project:

See also

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References

  1. ↑ Jim Allen (7 October 2009). TVA Opens Data Collection Software for Industry Use. Retrieved 8 June 2010.
  2. ↑ openPDC v1.0 Release Archived 2010-05-11 at the Wayback Machine . Retrieved 8 June 2010.
  3. 1 2 3 openPDC Single Page Overview Archived 2011-07-08 at the Wayback Machine . Retrieved 8 June 2010.
  4. ↑ How to Create a Custom Adapter. Archived 2011-07-08 at the Wayback Machine Retrieved 9 June 2010.
  5. ↑ openPDC Getting Started: Set up the database Archived 2011-07-08 at the Wayback Machine . Retrieved 9 June 2010.
  6. ↑ How to Use the openPDC Manager: Configuring outputs Archived 2011-07-08 at the Wayback Machine . Retrieved 10 June 2010.
  7. ↑ James Ritchie Carroll (May 2007). TVA SPDC Update Archived 2011-07-27 at the Wayback Machine , page 8. Retrieved 15 June 2010.
  8. ↑ Josh Patterson (2 June 2009). The Smart Grid: Hadoop at the Tennessee Valley Authority (TVA). Retrieved 15 June 2010.
  9. ↑ James Ritchie Carroll. Updates for Simplification of Scale-Out Archived 2011-07-08 at the Wayback Machine . Retrieved 11 June 2010.
  10. ↑ openPDC Getting Started: Using the in-process historian adapter Archived 2011-07-08 at the Wayback Machine . Retrieved 10 June 2010.
  11. ↑ How to Use the openPDC Manager: Viewing real-time data Archived 2011-07-08 at the Wayback Machine . Retrieved 10 June 2010.
  12. ↑ Data Quality Monitoring Adapters Archived 2011-07-08 at the Wayback Machine . Retrieved 10 June 2010.
  13. ↑ openPDC Getting Started: Using the openPDC Console Archived 2011-07-08 at the Wayback Machine . Retrieved 9 June 2010.
  14. 1 2 3 Introducing the openPDC Management System Archived 2011-07-08 at the Wayback Machine . Retrieved 9 June 2010.
  15. ↑ openPDC Getting Started: Running the PMU Connection Tester Archived 2011-07-08 at the Wayback Machine . Retrieved 9 June 2010.
  16. ↑ PMU Connection Tester Archived 2011-07-08 at the Wayback Machine . Retrieved 9 June 2010.
  17. ↑ Board Technology Committee (23 October 2008). NERC Conference Call Agenda Archived 2011-06-08 at the Wayback Machine . Retrieved 7 July 2010.
  18. ↑ June 2010 openPDC v1.1 Release Archived 13 October 2010 at the Wayback Machine . Retrieved 7 July 2010.
  19. ↑ NASPI PMU Registry. Retrieved 14 June 2010.
  20. ↑ openPDC Getting Started: Encrypt the configuration settings Archived 2011-07-08 at the Wayback Machine . Retrieved 9 June 2010.
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