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Trends in SCADA Technology for Public Power William (Bill) Rambo Vice President, Business Development Survalent Technology Corporation [email protected] Mike Parker Senior Electric System Dispatcher Roseville Electric [email protected] Technology We are being asked to do more… with less Technology Technology and the pace of change are relentless…. Technology Our systems need updating Technology Agenda – Evolution of SCADA – SCADA Costs – Web Technology – City of Roseville case study – Integration –Q & A SCADA Timeline • Before SCADA – Simple HumanMachine Interfaces provided basic equipment monitoring – Limited information – Slow – Undependable – Messy… 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 SCADA Timeline First Generation SCADA: Monolithic • Networks non-existent Second Generation SCADA: Distributed Third Generation • Proprietary (expensive) hardware and SCADA: Networked processors allowed for software More powerful • Movement open system architecture distribution of individualtoward SCADA system • Limited communication strictly • protocols: Windows based systems emerge functions across multiple scanning and controlling points withinsystems the Improved• the redundancy and Possible now to distribute SCADA functionality across a remote device reliability of the system Wide Area Network and not just a Local Area Network • Limited graphics displays Still largely proprietary software. PC • slow, Easier for the user to connect third party peripheral • Communications were unreliable technology emerging devices (such as monitors, printers, disk drives, tape Information drives, available etc.)intoreal the time system and/or the network • • 1960’s Internet Protocol (IP) for communication between the master station and communications equipment allows for Ethernet connectivity Enhanced graphical displays 1990’s 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 IED’s • Cyber Security – Post 9/11 • SCADA connected to the enterprise SCADA Timeline BOTTOM LINE: • Public Power Benefits tremendously! • SCADA is not just for larger utilities SCADA Costs Price/ Performance SCADA Features SCADA Trends Web Technology SCADA Trends Web Technology • Utilized to provide a secure interface to SCADA • Provide transport for Data to and from SCADA 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 Web Technology DMZ Web-Server 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. • • • Instant, out-ofthe-box SCADA web server. User-friendly drill-down interface to view configuration and information. Tabular and Graphical Displays • • • • • Password protection Off-loads client workstation data requests from SCADA master Common preconfigured 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. Tabular Displays • Dynamic – Station data, hierarchical – Alarms and operations messages Tabular Displays • Reports – – – – Tagged devices Abnormal points Failed points Manually set points 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 SCADA Trends City of Roseville Application Web Technology City of Roseville, California – Background – Situation – Solution – Benefits Web Technology City of Roseville, California • >43,000 meters • 17 distribution substations • Population doubled in last decade • 6-8%System 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 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 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 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 SCADA Trends Integration Integration • SCADA data is useful in other parts of the organization • Examples: • Engineering Analysis • Outage Management • Metrics • Load Management • Geographical Information Systems www.multispeak.org 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 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 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 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 Questions? Thank you!