Implementing PI Systems at CPS Energy

1. Regional Seminar Series Dallas/Fort Worth The Use of PI at CPS Energy Speaker - Robert A. Silva SCADA Engineer CPS Energy January 27, 2010

2. CPS Energy • CPS Energy has an installed generation capacity close to 5,800 MW. The diverse mix includes coal, nuclear, natural gas as well as renewables including wind, solar and landfill methane gas. • Peak load for the system is close to 4,700 MW during the summer months. The nation’s largest municipally-owned energy utility providing both natural gas and electric service – serving over 690,000 electric and 320,000 natural gas customers.

3. CPS Energy – Energy Delivery Services System Operations and Customer Reliability is the group responsible for the real-time operation and control of the electric and gas delivery systems.

4. CPS Energy – PI Systems utilized include • EMS for Electric T&D installed in Jun 2000, last upgrade Dec 2009 • Distribution/OMS/GIS installed in Oct 2006, DMS upgrade currently in progress • SCADA System for Gas Transmission/Distribution system installed in May 2005 • Gas Meter Resolution System installed in Aug 2007

5. CPS Energy – Primary Drivers Primary Drivers for PI • Ability to create custom displays easier • Retrieve data quickly and easily using common tools such as Excel • Not satisfied with performance of existing historian • Make use of the multiple interface capability (T&D EMS, Gas SCADA, Modbus, etc.) • Provide access to data for staff in corporate offices

6. CPS Energy – PI PI Historian system installed in August, 2007 to serve as historian for the T&D system EMS and the Gas system SCADA • PGAS data also mirrored in PI for analysis/forensics • New DMS install in 2009 includes a separate 40K tag PI system System features a 3.4 HA collective interfaces including • PI-OPC (redundant failover) • PI-RDBMS • Native interface to Gas SCADA • PI-to-PI

7. CPS Energy – PI Primary tools of choice – ProcessBook and Datalink. Deployed at • Primary (Control room, operations and systems support staff) • Substation Engineering • Transmission/Distribution planning • Asset Management • Gas Engineering Plans in place to deploy PI Webparts in near future (NERC-CIP and upgrades took recent precedence)

8. CPS Energy – System Summary

9. CPS Energy – RTU Status

10. CPS Energy – ICCP Status

11. CPS Energy – PI PI ProcessBook is utilized for ‘Wide Area’ Visualization BARCO large screen display systems in the EMC control room for situational awareness 42” Plasma information displays located • In the EMC lobby – informational displays for visitors • In the Systems support area for system status displays

12. CPS Energy – EMC BARCO Displays

13. CPS Energy – Plasma Information Displays

14. CPS Energy – additional use cases • Staff wanted to present system frequency and other system data in a wide-area view, replacing legacy system which was problematic. Source was video graphic recorder tied to tone-telemetry equipment which featured Modbus over Ethernet output • PI-Modbus was configured to collect data at 1-second samples

15. CPS Energy – PI additional use case

16. CPS Energy – additional use cases • System Operations Support staff uses PowerWorld Simulator product for network studies including load flow and contingency analysis. PowerWorld Retriever was added to provide additional wide-area visualization. • Integrates easily with many products, particularly PI

17. CPS Energy – PowerWorld with PI data

18. CPS Energy T&D – Value of PI The Northeast Blackout of 2003 produced recommendations calling for better visualization of system conditions • PI at system operations • Superior tool for trending, system visualization • Key tool for support staff for data analysis/forensics of system health and EMS and equipment troubleshooting • PI as a benefit to corporate engineers/planners • Planners able to see load in real-time as opposed to past methods which provided data 2 weeks in arrears • Now able to more easily identify and correlate feeder phase imbalance • Use for power factor improvement • Able to tune planning models more accurately and easily

19. CPS Energy – PI for IT Monitoring • CPS Energy made decision to acquire IT Monitor in Fall of 2007. Installed HA IT Monitor collective and interfaces in March, 2008 • Interfaces utilized include • Perfmon • Ping • Windows Event Log • SNMP • TCP Response • Installed and collecting first data in < 3 hours

20. CPS Energy – IT Monitor Overview

21. CPS Energy – PI Windows Perfmon Overview

22. CPS Energy – PI Interface Overview Display shows status of interfaces actually using Uniint Health tags • For interfaces which feature this, it provides a excellent method of monitoring data flow – including the health of the source system

23. CPS Energy – PI Notifications • Originally installed as RTAlerts in 2008 • Over 700 notifications currently in service • Recently upgraded with plans to revise/standardize to take advantage of new notifications templates feature • Keeps operations doing their primary job – monitoring electric/gas systems, not the SCADA/network infrastructure • Makes support staff better at their jobs…

24. CPS Energy – PI Notification Closed

25. CPS Energy - Upgrade to PI Server v380 • Upgraded PI Historian Collective and IT Monitor in December, 2009 – while Transmission SCADA system was being upgraded. • Used procedure listed in ‘Configuring PI Server Security’ – “Migrate over Time” option. • ‘Turned up’ IT Monitor server to Windows Authentication level the day after software upgrade. • Make sure to set database defaults – since they determine default behaviors/configuration going forward.