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Communication in Substations: IEC61850 1.1 : GENERALITIES

Communication in Substations: IEC61850 1.1 : GENERALITIES. Sudhakar RAMPURKAR / AnshumanBHALLA 26th & 27th October 2009. Present situation of communication protocols for substations. There are over 50 protocols worldwide for substation automation.

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Communication in Substations: IEC61850 1.1 : GENERALITIES

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  1. Communication in Substations:IEC618501.1 : GENERALITIES SudhakarRAMPURKAR / AnshumanBHALLA 26th & 27th October 2009

  2. Present situation of communication protocols for substations • There are over 50 protocols worldwide for substation automation.

  3. IEC 60870-5-… had gained acceptance in 2004 • Corporate • Network TCP/IP • IEC 60870-5-104 Control Centre • IEC 60870-5-101 • Still used • IEC 60870-5-103 RS485-Bus • IEC 60870-5-103 FO in start configuration • Legacy bus • Profibus FMS Lon-Bus … • Substation

  4. The Solution: IEC 61850 IEC 61850 One World One Technology One Standard

  5. IEC 61850 – Present areas of application Highly integrated Substation HIS® Gas insulated substations IEC 61850 Medium-voltage substations Air insulated substations

  6. IEC 61850 -in brief • Not just another bus system… • Goes far beyond almost all other communication standards • It extends the way automation devices “work together” • Defines WHAT to communicate and HOW to communicate • Everything has a name • Configuration language for devices and substations • Selects communication protocols • Applicable in substations and many other domains Š • Windpower Š • Distributed Energy Resources

  7. Flexible communication structures • Different power network structures are found all over the world • Different requirements for communication exist • Communication systems must be flexible to fulfill requirements of the one world not of one country

  8. IEC61850 Key Benefits (1) • Speed: 100 Mbps instead of few 10 kbps • More data for a better operation & maintenance • Peer-to-peer: No extra hardware • Design of innovative automation schemes, late tuning • Conditional report instead of polling • Optimal performances • IP (Internet Protocol) routing: Ubiquitous data access • Capability to extend the system outside of the substation • Client-server: Instead of master-slave • Flexible designs easy to upgrade • Pre-defined names: Single vocabulary between users • Easier engineering between teams XML references: Formal interfaces Consistency between engineering tools A true step forward

  9. IEC61850 Key Benefits (2) • IEC 61850 is independent of short term benefits: focuses on the “long living application objects” • Independent of current product; stable over several product cycles (long term stability) • Independent of operating systems and programming languages independent of middleware • Independent of communication systems • Independent of vendor (multi-vendor support) Š • Manufacturer-independent exchange of configuration data – shorter Project Execution Time and more efficient Maintenance

  10. IEC61850 Key Benefits (3) • Interoperability – without Gateway • Ethernet Š • Simpler Cabling in comparison with Hard-wiring ŠHighly forward and backward compatible – 100Mbit/s of today compatible with 10Gbit/s of the future • Common Communication structure in enterprise – unified data flow • TCP/IP – easy Access to public and private data networks • Investment is safeguarded • Neither station bus nor process bus is defined – permitting Optimisation of Costs and Performance of the System

  11. IEC 61850 – Benefit of the User • Time savings in projects, operations and maintenance of substations • Cost savings through the use of Ethernet • Internationally valid and checked interoperability gets rid of frustration arising from the system

  12. IEC 61850 –Now being used worldwide • IEC 61850 specification has been approved as international Standard • Tools for analysis and tests are available • Interoperability Tests were successfully carried out

  13. Users‘ Benefits -Design • Design • Re-use of data from specification • Use of existing Ethernet • Simpler hardware • No gateways • Off-the-shelf Ethernet component • Less design co-ordination • Protection & control templates • Fewer cables & marshalling boxes

  14. Users‘ Benefits -Config • System Configuration • Lower chance of errors • Time saving • Right-first-time • Less rework & re-testing • Factory testing with full cabling

  15. Users‘ Benefits-I&C • Installation & Commissioning • Lower chance of errors • Tools available for checking Ethernet • Help from specialists in office • HMI plugged to any Ethernet switch

  16. Users‘ Benefits – O&M • Operation & Maintenance • Higher performance • No delays due to gateways • Fast multi-casting • No master as bottleneck • High data rate of 100Mbit/s • Priority tagging • Higher availability • Distributed intelligence • No collision of telegrams • Events are spontaneous; no polling delays • Less training effort

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