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Substation Automation System

Substation Automation System. Khorasan Regional Electric Company Ministry of Energy of Iran. Presented By: Hanieh Esmaeeli. November 8 th .2012 h.esmaeely@gmail.com. Infrastructure. interaction. Joint task. System: collection of different parts Automation system:

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Substation Automation System

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  1. Substation Automation System Khorasan Regional Electric Company Ministry of Energy of Iran Presented By: HaniehEsmaeeli November 8th.2012 h.esmaeely@gmail.com

  2. Infrastructure

  3. interaction Joint task • System: collection of different parts • Automation system: Numeric & Computerized equipment • Substation Automation System: Centralized Distributed Numeric Technology & Communication System

  4. SAS The core ingredients of a power system automation system are local intelligence, data communications and supervisory control, and monitoring

  5. centralized • Petrochemical and refinery • Central computer • Controller was a medium between Field Instrument and Central computer Defect Concentration of data processing

  6. DCS

  7. DCS (Distributed Control Centers) Data processing is divided Controllers are connected • Process Control System • Performance • Deterministic • Fault Tolerant • Security

  8. DCS Architecture

  9. Field Level 1 • Lowest level are field instrument and actuators I/O is not necessary Classic Field Bus

  10. Control level 2 Protocol Physical Interface

  11. Monitoring level 3 • The process control is done by operators Terminal Bus Engineering Station 4

  12. Operating Station 5 • Type is depend on the Protocols Media 6

  13. IED • Controllers • Digital relays • RTU • Meters 7 GPS 8

  14. Communication type 1. Client/Server For more reliability we use Redundant server

  15. Communication type cont’d 2. Stand-alone Station Share job: Alarm logging Alarm archiving Data storing Powerful Computers

  16. Proposed DCS system

  17. Protocols

  18. Protocols • The distributed network protocol is a data acquisition protocol used mostly in the electrical and utility industries. It is designed as an open, interoperable, and simple protocol specifically for SCADA controls systems. • Important factors in SAS • Optimal performance in substation functions

  19. Data transmission The need for all this information to be added to the raw message can, and did, lead to a lot of confusion and incompatibility between different devices on the network.

  20. OSI Model • The open system interconnection (OSI) model was developed by the International Standards Organization (ISO) to provide a universally applicable structure for communication applications. • The OSI model consists of a seven-layer stack onto which the message is modulated. The way in which the seven layers is applied

  21. Tele-Control Protocols • IEC 60870-5-101 protocol (from RTU to Control Center communication • IEC 60870-5-103 protocol (for communication between IEDs in a Substation) • IEC 60870-5-104 protocol • MODBUS Protocol ( MFTs) • DNP 3.0 Protocol (Serial)---Master Station • DNP 3.0 Protocol (TCP/IP)---Master Station • IEC 61850 protocol (for Substation Automation)

  22. In the Present of SCADA system • IEC 60870-5-101 for data acquisition from RTUs/SAS • IEC 60870-6-502 for data exchange between control centers

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