Transcript 201008_HighlyInteroperableIsds - Testing

Highly Interoperable
Intelligent System Devices
UCAI Testing Meeting
Paris, France
August 25, 2010
Bruce Muschlitz
Committee co-chair
www.ucaiug.org
August 25, 2010
Highly Interopable ISDs
Content
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What is ISD?
What is interoperability?
What are interoperability issues?
Which groups need to be involved?
How will this be perceived by IEC?
Open discussion
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What is an ISD
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No longer have IED working alone
Need to take a system approach
ISD = Intelligent System Devices
Coordination with vendors and users
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What is interoperability?
• D2/B5 paper 103 discussed 4 levels
– Data Interop
– Functional Interop
– Engineering Interop
– Interchangeability
• Focus on first 3
• User perspective – it works for my project
• Project vary signifiantly
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What are interoperability issues?
• Data interop
– Needed data not present or in wrong form
• Functional Interop
– Functions across IEDs cannot be integrated
– Non-configurability is a key problem
• Engineering Interop
– Immature tools to integrate multiple vendors
– Not all of SCL features currently used
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Interoperability failure examples
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Data – voltage data Volts or kVolts
Data - GOOSE dataset items
Function – transfer of blocking signals
Function – unbuffered/buffered reporting
Engineering – devices ignore SCD file
Engineering – devices ignore IP address
Engineering – non-configurable datasets
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Which groups need to be involved?
• IEC specifically let many items optional
• Users see devices with non-overlapping
feature sets
• UCA cannot write standards
• Others write Implementation Agreements
• Must involve TISSUEs process
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How will this be perceived by IEC?
• IEC maintains control of 61850
• Specification of a single feature subset will
effectively invalidate parts of 61850
• Specification of too many subsets may not
benefit users
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Open discussion
• Need to form a interop Task Group
– First topic – list all known interop problems
– Second topic – decide which most urgent
• Short open discussion
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Questions
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