Trends in SCADA Technology for Public Power

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Trends in SCADA Technology for Public Power
Mike Parker Senior Electric System
Dispatcher Roseville Electric mparker_at_roseville.ca
.us
William (Bill) RamboVice President, Business
DevelopmentSurvalent Technology
Corporationrambo_at_survalent.com
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Technology
We are being asked to do more with less
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Technology
Technology and the pace of change are relentless.
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Technology
Our systems need updating
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Technology
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• Agenda
• Evolution of SCADA
• SCADA Costs
• Web Technology
• City of Roseville case study
• Integration
• Q A

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SCADA Timeline

• Before SCADA
• Simple Human-Machine Interfaces provided basic
  equipment monitoring
• Limited information
• Slow
• Undependable
• Messy

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SCADA Timeline

• Q How long have SCADA Systems been around?
• A SCADA systems have been used in utilities
  industry in the United States since the 1960s

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SCADA Timeline
First Generation SCADA Monolithic

• Networks non-existent
• Proprietary (expensive) hardware and software
• Limited communication protocols strictly
  scanning and controlling points within the remote
  device
• Limited graphics displays
• Communications were slow, unreliable

Second Generation SCADA Distributed
Third Generation SCADA Networked

• More powerful processors allowed for distribution
  of individual SCADA system functions across
  multiple systems
• Improved the redundancy and reliability of the
  system
• Still largely proprietary software. PC
  technology emerging
• Information available in real time

• Movement toward open system architecture
• Windows based systems emerge
• Possible now to distribute SCADA functionality
  across a Wide Area Network and not just a Local
  Area Network
• Easier for the user to connect third party
  peripheral devices (such as monitors, printers,
  disk drives, tape drives, etc.) to the system
  and/or the network
• Internet Protocol (IP) for communication between
  the master station and communications equipment
  allows for Ethernet connectivity
• Enhanced graphical displays

1960s 1990s
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SCADA Timeline
SCADA Today

• Integration of standard Information Technology
• OS Linux and Windows limited UNIX
• Increased use of Intel Processors (Windows and
  Linux)
• IP based RTU Communications (DNP/IP)
• Integration of IEDs
• Cyber Security Post 9/11
• SCADA connected to the enterprise

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SCADA Timeline

• BOTTOM LINE
• Public Power Benefits tremendously!
• SCADA is not just for larger utilities

SCADA Costs
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SCADA Trends

• Web Technology

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SCADA Trends
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Web Technology

• Utilized to provide a secure interface to SCADA
• Provide transport for Data to and from SCADA

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Web Technology

• Before Web Technology
• Proprietary software required
• Difficult (and potentially expensive) to give
  multiple users access to the system
• Limited access to SCADA data
• Difficult to share access outside of the
  enterprise

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Web Technology
DMZ
Web-Server
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Web Technology

• Powerful application to serve real-time SCADA
  information across the entire enterprise
• Provides secure, read only access to SCADA
  information via a zero-maintenance web browser
  client.
• Eliminates multiple instances of software to
  manage,
• Custom web pages or,
• Maintenance of a separate system.

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• Instant, out-of-the-box SCADA web server.
• User-friendly drill-down interface to view
  configuration and information.
• Tabular and Graphical Displays

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• Password protection
• Off-loads client workstation data requests from
  SCADA master
• Common pre-configured interface for all users, no
  need to build custom screens
• Supports maps, alarms, operations messages,
  reports and graphs
• Automatically retrieves data from alternate
  master during fail-over condition.

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• Tabular Displays
• Dynamic
• Station data, hierarchical
• Alarms and operations messages

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• Tabular Displays
• Reports
• Tagged devices
• Abnormal points
• Failed points
• Manually set points

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Graphics

• Server uses GUI as SVG graphics generator
• Dynamic point updates
• Dynamic trend graphs and feeder coloring
• Navigation
• Automatic and manual layer control
• Leverage software investment
• Leverage your graphics database investment

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SCADA Trends

• City of Roseville Application

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Web Technology

• City of Roseville, California
• Background
• Situation
• Solution
• Benefits

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Web Technology

• City of Roseville, California
• gt43,000 meters
• 17 distribution substations
• Population doubled in last decade
• 6-8System load increase every year for past
  decade
• Peak load 315 MW
• SCADA System for 15 years
• 160 MW power plant coming on-line in 2007

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Web Technology

• Situation
• Only way to get into SCADA was via single modem
• Feeders at capacity
• No 24 hour dispatch center
• Need for access to SCADA outside of business
  hours
• MS Access database for tracking load information
  had become support nightmare
• Getting data out of SCADA was always a management
  issue for IT
• Database size an issue for MS Access
• Many utility personnel who need information from
  SCADA
• Switching Power Marketing Services
• Data input from ftp site
• System load data to Power Marketer

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Web Technology

• Solution Web Server
• Web server
• Real-time replication of SCADA database to SQL
  database
• Historical data archive
• Web server knows when redundant SCADA servers
  fail over- pulls data from primary SCADA master
• Reporting data from historical and real-time
  data for load information

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Web Technology

• Benefits
• Easy access to SCADA
• User ID and password
• Multiple personnel can access
• Security is maintained Web Server outside of
  SCADA firewall
• Data in SQL database
• Scalable, open platform
• Web pages for sharing of near real-time data
• Internal utility employees
• Power Marketer
• Easy import of data, using web technology back
  into SCADA from power provider

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SCADA Trends

• Integration

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Integration

• SCADA data is useful in other parts of the
  organization
• Examples
• Engineering Analysis
• Outage Management
• Metrics
• Load Management
• Geographical Information Systems

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www.multispeak.org
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MultiSpeak Project Objectives

• Industry-wide open initiative sponsored by the
  National Rural Electric Cooperative Association
  (NRECA) to facilitate development of software
  interfaces needed by rural electric co-ops
• Developed uniform interface definitions for data
  exchange among commonly used software
• Developed consensus among vendors about details
  of the interfaces, including data dictionary,
  data objects, and messaging framework

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What is MultiSpeak?

• Specification for data exchange interfaces
• Treats software applications as black boxes
• Does not limit vendors from developing new
  features or working together to provide tighter
  integration than presently supported by spec

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What MultiSpeak Does

• Defines which data objects need to be exchanged
  between common software
• Defines structure of those data objects
• Specifies message structures and messaging
  architectures
• Supports real time and/or file-based data
  exchanges

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Re-Cap

• SCADA Price/Performance for Public Power
• Web Technology will provide value as an enabling
  technology
• Interface to SCADA
• Transport for data to/from SCADA
• Integration of utility systems and elimination of
  silos of data will allow utilities to increase
  performance

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Questions?
Thank you!