Regional Seminar Series
Dallas/Fort Worth
January 27, 2010
The Use of PI at CPS Energy
Speaker - Robert A. Silva
SCADA Engineer
CPS Energy
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CPS Energy
• 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.
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• 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.
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CPS Energy – Energy Delivery Services
• System Operations and
Customer Reliability is the group responsible for the realtime operation and control of the electric and gas delivery systems.
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CPS Energy – PI
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• 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
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CPS Energy – Primary Drivers
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• 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
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CPS Energy – PI
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• 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
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CPS Energy – PI
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• 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)
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CPS Energy – System Summary
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CPS Energy – RTU Status
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CPS Energy – ICCP Status
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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
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CPS Energy – EMC BARCO Displays
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CPS Energy – Plasma Information Displays
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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
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CPS Energy – PI additional use case
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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
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CPS Energy – PowerWorld with PI data
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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
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CPS Energy – PI for IT Monitoring
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• 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
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CPS Energy – IT Monitor Overview
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CPS Energy – PI Windows Perfmon Overview
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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
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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…
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CPS Energy – PI Notification Closed
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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.
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