The document discusses practical distribution and substation automation for electrical power systems, focusing on various networking technologies such as repeaters, bridges, routers, and gateways. It highlights the role of power system automation in managing, controlling, and protecting power networks through integrated electrical protection, local and remote control, measurement, monitoring, and data communications. Additionally, it describes the architecture involving intelligent electronic devices and the SCADA system for effective data handling and command issuance.

1. Practical Distribution & Substation Automation
(Incl. Communications) for Electrical Power Systems
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2. Internetwork Connections
• Repeaters
• Bridges
• Routers
• Gateways
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3. Repeaters
• Connect two segments of the same LAN
• Simply amplify and retransmit the signal to the
next segment.
• Repeaters connect different segments...but all
segments form one LAN.
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4. Bridges
• Connect two networks.
• Bridge acts as a node as far as each network is
concerned.
• More intelligent than repeaters and can reduce
the traffic.
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5. Routers
• Transfer data between different networks and route
packets to the correct network to which they are
attached.
• This is based on the Network layer (OSI Model).
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6. Gateway
• Connect networks which are totally dissimilar.
• There may be a need to translate all 7 OSI layers.
• High overhead and to be avoided where possible.
• Expensive and low performance.
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7. Power System Automation
A System for:
Managing, Controlling and Protecting a Power
Network
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8. Definition
Integrated Electrical Protection, Control, Measurement,
Monitoring and Data Communications
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9. Electrical Protection
• Local
• Independent
• Never Compromised
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10. Control
• Local Control
» Independent of
Network
» Configured by User
• Remote Control
» Operator Initiated
» Network Initiated
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11. Measurement
• Electrical measurements
and metering
• Disturbance recordings
• Other analogue values
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12. Monitoring
• Status indications
• Condition Monitoring
• Preventative Maintenance
Information
• Sequence-of-Event
Recordings
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13. Data Communications
• Physical Configuration
• Protocols
• Response Times
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14. Basic Architecture
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15. Basic Architecture
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16. Object division
• Consists of intelligent electronic devices (IEDs), modern, third-generation
microprocessor based relays and/or remote terminal units (RTUs)
•The communications network :
• Nervous system of power system automation
• Ensures that raw data, processed information, and commands are relayed quickly,
effectively and error-free among the various field instruments, IEDs and the
SCADA system
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17. SCADA master
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• Receives data and information from the field, decides
what to do with it, stores it, and issues requests and/or
commands to the remote devices
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18. DO YOU WANT TO KNOW MORE?
If you are interested in further training or information,
please visit:
http://idc-online.com/slideshare
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