Transcript SCADA Communication & Controls

SCADA Communication
& Controls
John Teale
Menasha Utilities
SCADA System Upgrade
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Overview of MU’s previous SCADA System
Upgrade: Our New SCADA System
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Advantages/Disadvantages
Electronic Relay Upgrade
MU’s Previous SCADA System
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MU shared a SCADA System in early 1990’s
Unix Based, Proprietary System
 Communication lines and speed
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(6) - Bridge Circuits – 1200 baud : Reliability
Telemetry/Discrete
 Control of Devices (Breakers/Reclosers)
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Upgrade Existing System?
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New Servers
HP – Unix Based Servers – Costly
 Proprietary System
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New Substation Addition
Upgrade existing Substation RTU’s
No Upgrade to Existing Protection Relays
New SCADA System’s of Today
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Windows Based Systems
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Open Architecture
Use of Electronic Relays
Protection
 Communication Gateways
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Communications Types
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– Fiber/Radio/Wireless
MU’s
New SCADA System
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Operate/Maintain our own SCADA System Master Station
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Use our Existing Fiber Optic Network for Communications
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Windows Based Servers
Software: Wonderware - InTouch - Terminal Services
MS SQL Server - Historian
Extend our LAN Network to Each Substation
Upgrade the Electro-Mechanical Protection Relays to Electronic
Relays
Cost Payback in Approximately 4+ years
Software
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Wonderware – InTouch – Terminal Services
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Advantages
Windows Based
 Support of Local Integrators and Local Wonderware
Vendor
 Communications: DNP 3.0, Modbus, SEL, Etc.
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Disadvantages
Must Build Application From Scratch
 Must provide all Interlocks and System Protection
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Substation Upgrade
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New Substation
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Implemented with Electronic Relays
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SEL-351, 351A Protection Relays
Communication Processor
SEL-2030
 Replaced the RTU
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Substation Upgrade Continued
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Communications – Fiber Optics
Extended LAN via Media Converters
 SEL-2890 Ethernet Transceiver
 Remote Monitoring of GE Electronic Relays via Fiber
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Site Implementation
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Using SEL-351 Relays connected to SEL-2030
Comm. Processor
SEL IO Server Driver used to acquire Data from the
SEL-2030 to Wonderware’s InTouch
 SEL-2030 Programmed to acquire Data as asked for
in the User Region
 Control for Breakers/Recloser can be done using the
Electronic Relay or a Remote I/O Module (SEL2505/2506)
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Communications:
Speed – 19.2 kbps (SEL-2030 to SEL-Relays)
 Update Speed on InTouch Set to 1-3 Seconds
 Breaker operation: Very Fast (Almost Instantaneous)
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Control and Monitoring Using
Electronic Relays
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Performed by the Microprocessor Relays
Responsible for Tripping and Closing Breakers or
other Devices
 Status of Breakers
 Analog Data is measured
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Demand, Energy, Voltage, Current, MW and MVAR
Sequential Events Recorder
 Fault Location
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Other Uses
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Electric Distribution uses it to Load Balance
Circuits
Data Sharing
Other Control Methods