GE Wind Energy Overview of Windfarm Communications Using DNP3 NREL November 17, 2003
Next Gen SCADA & Automation Program Windfarm High Level Communications Requirements Windfarm High Level Communications Requirements • Acquire quality and reliable real time and historical data on turbine and windfarm • Acquire quality and reliable real time and historical data on turbine and windfarm operations operations • Integrating all windfarm assets’ data (substation, met mast, relays, meters…) • Integrating all windfarm assets’ data (substation, met mast, relays, meters…) data into the system so one integrated homogeneous database for all windfarm data into the system so one integrated homogeneous database for all windfarm assets assets • Integrated data for remote monitoring and diagnostics, asset management, • Integrated data for remote monitoring and diagnostics, asset management, advanced diagnostics, condition based maintenance advanced diagnostics, condition based maintenance • Allow for choosing “best-in-class” software and hardware • Allow for choosing “best-in-class” software and hardware • Optimize system maintenance & configuration processes and costs • Optimize system maintenance & configuration processes and costs • Improved functional reliability… improved availability • Improved functional reliability… improved availability • Improved secure real time access to data… anyone, anywhere, anytime • Improved secure real time access to data… anyone, anywhere, anytime • Ability to reduce project configuration time • Ability to reduce project configuration time • Support advanced security technologies • Support advanced security technologies GE Company Confidential
Next Gen SCADA & Automation Program Windfarm LAN Protocol Requirements Windfarm LAN Protocol Requirements • Flexible polling schemes, ability to poll by device, by class, by database points, • Flexible polling schemes, ability to poll by device, by class, by database points, unsolicited (report by exceptions) unsolicited (report by exceptions) • Multimedia: seamless integration across multiple physical media: Ethernet, serial, • Multimedia: seamless integration across multiple physical media: Ethernet, serial, radio licenses / unlicensed RF, phone, … radio licenses / unlicensed RF, phone, … • Seamless integration across corporate LAN / WAN and Intranets / Internet • Seamless integration across corporate LAN / WAN and Intranets / Internet • Supported by multiple vendors, open, well documented, deployed in the field • Supported by multiple vendors, open, well documented, deployed in the field • No significant processor requirements on slave devices (low overhead) • No significant processor requirements on slave devices (low overhead) SCADAnet EMS Operations Control Center Radio Ethernet Historian Intranet Router Server SCADA Histor Backup Control ian User Remote User GE Company Confidential
Next Gen SCADA & Automation Program Future Protocol Requirements Future Protocol Requirements • Self description, auto-configuration • Self description, auto-configuration • Device based object models • Device based object models • Access security: encryption • Access security: encryption • Peer to Peer communications • Peer to Peer communications What to Watch Out for.. What to Watch Out for.. • Still a lot of low bandwidth systems… the “last mile” scenario • Still a lot of low bandwidth systems… the “last mile” scenario • Cost of implementation, learn from experiences of electric utilities with UCA, IEC 68150, millions of $$ • Cost of implementation, learn from experiences of electric utilities with UCA, IEC 68150, millions of $$ have been and still not widely adopted by the industry have been and still not widely adopted by the industry • Is the protocol stack too heavy for simple devices… processor requirements, $$ • Is the protocol stack too heavy for simple devices… processor requirements, $$ • Size, complexity and licensing issues of the protocol stack • Size, complexity and licensing issues of the protocol stack • The learning curve for a complex protocol for windfarm implmentors • The learning curve for a complex protocol for windfarm implmentors GE Company Confidential
Next Gen SCADA & Automation Program GE Wind Energy’s Implementation of DNP3 • GEWE required a windfarm LAN protocol that was already deployed, well documented and supported by companies (source code, OPC drivers, test sets, defined subets, etc…) • DNP3 met these requirements, today • Promised migration path for future enhancements GE Company Confidential
Next Gen SCADA & Automation Program History of DNP3 • Distributed Network Protocol, completely open protocol, extremely well documented and supported, has reached a level of maturity that makes deployment risk-free • Based on early parts of IEC 870-5 • Turned over to Users Group in 1993 • DNP and IEC 870-5-101 have been specified in IEEE P1379 Recommended Practice for Data Communications Between Intelligent Electronic Devices and Remote Terminal Unit � DNP3 protocol is now the most popular protocol in use by global electric utilities � DNP LAN implementation leads the way for use by both North American and international utilities. • Vendor Products - >100 vendors, +250 DNP products and services, global • Utilities/Industrials www.dnp.org - used by >300 utilities and industrials worldwide • Countries - used in over 32 countries. National standard in many • Total Industry - $250 Million / year of DNP products and services • Industries - Electric, Oil & Gas, Water and Industrial • DNP Users Group: >300 active members, controlsthe protocol and migration, support web site, active Technical Committee, evolving documentation, technical bulletins GE Company Confidential
Next Gen SCADA & DNP3 in Substation LAN Automation Program PowerLink Clients SCADA/EMS Masters To Enterprise S L I P / P P P GPS Receiver WAN GUI GUI Telephone Co. Dial Up Network GUI Bridge/Router PowerLink Client Remote SER/DFR Master or Maintenance Computer Redundant PowerLink Server Remote Deployed in many hundreds of substations Communications Controller around the world by many vendors Ethernet LAN Fibre Optic Cables Server/Gateway Digital D25 Fault Recorder Status I/O I/O Controls Analogs IED’s I/O I/O IED's for Protection IED at I/O AC inputs I/O circuit breaker Distributed I/O Outdoor Locations GE Company Confidential
Next Gen SCADA & Automation Program Wind Turbines with “Turbine Communications Server” Switch / Router Bachmann Turbine Controller Communications Server Converter MET Tower Substation • Embedded PC platform… no hard drive or fan • Linux operation system, embedded web server • Real time interrupt driven database manager • Polls data from wind turbine intelligent devices (Controller, meters, intelligent sensors, etc.) • Secondary data processing, compression, alarming • SQL database for local data archiving • DNP3 server for real time mission critical data • ODBC server for historical data • OPC client or server for interface to other devices GE Company Confidential
Next Gen SCADA & Automation Program SCADA Master Station Web Access, Pager, Email or Web Access, Pager, Email or Remote SMS Operator Alarms / Reports / Remote SMS Operator Alarms / Reports / Notification Configuration, File Notification Configuration, File Transfer, ODBC Transfer, ODBC • Graphical User Interface Screens •Park / Turbine overview: animated WAN / Internet / •Annunciator Dial-In •Communications network overview, alarms •Configuration screens SCADA Master / Server • SQL Database User interface, Backup trending, Access alarming, GPS Time • Report Generation reports, SQL Sync server • Real Time or Historical Trending • Alarm Management Wind Farm •Email, SMS, voice, fax Operations Center • Remote User Interface • Communications to Windfarm •DNP3 for real time mission critical data •ODBC for historical data •High configurable and “tunable” GE Company Confidential
Next Gen SCADA & Automation Program Web Access, Pager, Email or Utility SCADA / EMS Web Access, Pager, Email or Utility SCADA / EMS Remote SMS Operator Alarms / Reports / / RTA / ISO…. Remote SMS Operator Alarms / Reports / / RTA / ISO…. Notification Configuration, File Notification (Multiple) Configuration, File (Multiple) Transfer, ODBC Transfer, ODBC WAN / Internet / GEWE Remote GEWE Remote Dial-In Control Center Control Center Scada Protocols Substation Meters, SCADA Master / Server •DNP3 Relays,.. •IEC 60870-5-101 User interface, •UCA Backup trending, •Others 485.6 AMPS Access GPS Time Utility Gateway alarming, Sync reports, SQL server 485.6 AMPS RCC Gateway Wind Farm Operations Substation Center 10/100 Mbit LAN – DNP3/TCP/IP - ODBC Switch / Router Bachmann Turbine Controller Communications Server Converter MET Tow er Wind Turbines with “Turbine Communications Server” GE Company Confidential
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