Control and Automation of Electric Power Distribution ... · Control and Automation of Electric...
Transcript of Control and Automation of Electric Power Distribution ... · Control and Automation of Electric...
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Control and Automation of Control and Automation of Electric Power Distribution Electric Power Distribution
SystemsSystems Presented
by
Shi-lin ChenProfessor, Chung Yuan Christian University
Professor Emeritus, National Tsing Hua University
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Source for pp.3-17:J.A. Momoh, ELECTRIC POWER DISTRIBUTION, AUTOMATION, PROTECTION, and CONTROL, CRC Press, 2008.
Source for pp.18-31:J. Northcote-Green and R. Wilson, CONTROL and AUTOMATION of ELECTRICAL POWER DISTRIBUTION SYSTEMS, CRC Press, 2007.
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Distribution Automation and Control Distribution Automation and Control FunctionsFunctions
Trouble Calls
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Distribution Management SystemsDistribution Management Systems
DMS Function
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Distribution Management SystemsDistribution Management Systems
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Communication Systems for Distribution Communication Systems for Distribution Automation SystemsAutomation Systems
Amplitude Modulation(AM)
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Communication Systems for Distribution Communication Systems for Distribution Automation SystemsAutomation Systems
Frequency Modulation(FM)
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Communication Systems for Distribution Communication Systems for Distribution Automation SystemsAutomation Systems
Frequency-Shift Keying(FSK)
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Communication Systems for Distribution Communication Systems for Distribution Automation SystemsAutomation Systems
Phase-Shift Keying(PSK)
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Communication Systems for Distribution Communication Systems for Distribution Automation SystemsAutomation Systems
LAN Bus Topology
LAN-ring Bus Topology
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Communication Systems for Distribution Communication Systems for Distribution Automation SystemsAutomation Systems
LAN-star Topology
LAN-tree Topology
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Communication Systems for Distribution Communication Systems for Distribution Automation SystemsAutomation Systems
Metropolitan Area Network(MAN)
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Communication Systems for Distribution Communication Systems for Distribution Automation SystemsAutomation Systems
Simple frame-relay network
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Communication Systems for Distribution Communication Systems for Distribution Automation SystemsAutomation Systems
Frame-relay frame
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Communication Systems for Distribution Communication Systems for Distribution Automation SystemsAutomation Systems
DA Frame-relay
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Communication Systems for Distribution Communication Systems for Distribution Automation SystemsAutomation Systems
OSI
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DA COMMUNICATION PHYSICAL DA COMMUNICATION PHYSICAL LINK OPTIONSLINK OPTIONS
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DA COMMUNICATION PHYSICAL DA COMMUNICATION PHYSICAL LINK OPTIONSLINK OPTIONS
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DA COMMUNICATION PHYSICAL DA COMMUNICATION PHYSICAL LINK OPTIONSLINK OPTIONS
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DA COMMUNICATION PHYSICAL DA COMMUNICATION PHYSICAL LINK OPTIONSLINK OPTIONS
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DISTRIBUTION AUTOMATION DISTRIBUTION AUTOMATION COMMUNICATIONS PROTOCOLSCOMMUNICATIONS PROTOCOLS
MODBUS
Transferring control signals between programmable logic controllers
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DISTRIBUTION AUTOMATION DISTRIBUTION AUTOMATION COMMUNICATIONS PROTOCOLSCOMMUNICATIONS PROTOCOLS
DNP3.0
Fragmented messages
Multiple Application Layer messages may be built and transmitted sequentially
A message may be either a single-fragment message or multifragment message
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DISTRIBUTION AUTOMATION DISTRIBUTION AUTOMATION COMMUNICATIONS PROTOCOLSCOMMUNICATIONS PROTOCOLS
Unsolicited response
Error detection
Duplicate frame detection
Handles states of the media
Synchronization across the media
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DISTRIBUTION AUTOMATION DISTRIBUTION AUTOMATION COMMUNICATIONS PROTOCOLSCOMMUNICATIONS PROTOCOLS
Frame size
Data link control information
Help the remote receivers determine where the frame begins
To coordinate their activities
“All-call-message” in which the frame should be processed by all devices
Cyclic redundancy check tasks
A pair of CRC octets are included ,transmission errors can be detected 24
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DISTRIBUTION AUTOMATION DISTRIBUTION AUTOMATION COMMUNICATIONS PROTOCOLSCOMMUNICATIONS PROTOCOLS
IEC 60870-5-101
Enhanced performance architecture
Perform their local application tasks called application processes
Communication process between station A and station B
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DISTRIBUTION AUTOMATION DISTRIBUTION AUTOMATION COMMUNICATIONS PROTOCOLSCOMMUNICATIONS PROTOCOLS
The application data pass down through all layers
All control data are dropped until the original application data are received
Application service data unit(ASDU)
With no idle line or gaps between asynchronous characters
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DISTRIBUTION AUTOMATION DISTRIBUTION AUTOMATION COMMUNICATIONS PROTOCOLSCOMMUNICATIONS PROTOCOLS
LPCI=S+L+L+S+C+A+CS+E
S=Start character with a fixed defined bit pattern, L=Length character, C=The link control character, A=The link address field, CS=The check sum character, and E=End character with a fixed defined bit pattern
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DISTRIBUTION AUTOMATION DISTRIBUTION AUTOMATION COMMUNICATIONS PROTOCOLSCOMMUNICATIONS PROTOCOLS
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DISTRIBUTION AUTOMATION DISTRIBUTION AUTOMATION COMMUNICATIONS PROTOCOLSCOMMUNICATIONS PROTOCOLS
UCA 2.0, IEC 61850
Manufacturing Message Specification(MMS)
Open System Interconnection reference model, and seven layers integrate the communication protocol
Application Layer standard ISO/IEC 9506
These object models have named variables instead of point lists.
When the objects are accessed by MMS, common data formats and variables are associated to the object model
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DISTRIBUTION AUTOMATION DISTRIBUTION AUTOMATION COMMUNICATIONS PROTOCOLSCOMMUNICATIONS PROTOCOLS
Two main levels of field device object models, the basic
A switch control, and the specialized
Breaker control or breaker reclose control
The object model components are
Configuration parameters: Values that determine the setup of the device and are not expected to change often
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DISTRIBUTION AUTOMATION DISTRIBUTION AUTOMATION COMMUNICATIONS PROTOCOLSCOMMUNICATIONS PROTOCOLS
Settings: Values that determine the operation of the device and can change often
Operation: Values that represent the actual output decisions or commands of the model to perform its functions.
Status: Represents the indication or values directly concerned with the functions of the device
Associated parameters
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