Power Quality Enhancements
for IEC 61850
Winston CHUA Ywee Ming
South-East Asia Business Development Manager
Energy Management Solution
September 19, 2011
IEC 61850 – Motivation
Substation automation:
Need of a reliable
electric service
Strong level of
automation =
multiple electronic
devices
Multiple protocols
and communication
links
 Applications must deal with numerous protocols, data formats and data addressing
• Limited interoperability
• High integration costs
• High maintenance costs
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
Something needed to change:
 IEC 61850 standard creation
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IEC 61850 – Key differentiators / Success factors
Integrated approach to system design and communications
 Technical innovations:
• File based setup: archiving, maintenance and repeatability
• Unified modeling: of functions and common dictionary of terms
• Self description devices
•Independence of underlying protocols – future proof
 Market support from vendors
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
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IEC 61850 - Today’s SmartGrid Enabler
IEC 61850 is moving from primary substations into other areas of the
power system including, wind power, hydro and distributed energy
resources.
Transmission
IEC 61850 Evolutions
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
Distribution
Consumers
IEC 61850 Core Functions
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IEC 61850 – Key to the Smartgrid
Broad Application Support
Vendor Independence
Reduced Cost of Ownership
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
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Global Emergence of IEC 61850
Strong industry support for the prescription and participation in the
formation of the IEC 61850 standard.
Adoption unclear
Slow adoption
Fast adoption
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
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Today’s Modern Substation
Many competing protocols each doing something slightly different and
some level of proprietary communication to low level process equipment.
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
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The Substation Of Tomorrow
A unified approach with IEC 61850 addressing many needs in one suite
of protocols, including improved scalable function modeling, protocols and
support for modern engineering workflows.
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
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Existing IEC 61850 PQ Features
Power Quality Function
Description
COMTRADE
FTP
RDRE
MHAI
MFLK
MSQI
MMXU
QFVR
QITR
QUIB
QVTR
QVUB
QVVR
Log Model Service
SNTP
Fault recording
Download of fault records and/or device setup
Logical node (LN) for fault record alarming
LN for harmonics reporting
LN for flicker reporting
LN for imbalance calculations
LN for voltage frequency
LN for frequency variation reporting
LN for current transient reporting
LN for current unbalance variation reporting
LN for voltage transient reporting
LN for voltage unbalance variation reporting
LN for voltage variation reporting
Data logging state machine
Device internal time clock synchronization
Summary table of IEC 61850 Edition 2 power quality relevant functions.
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
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Proposed Power Quality Enhancements
● Adoption of IEC 61000-4-30 and EN50160 as PQ enhancements for
IEC 61850 standard:
● Vendor neutrality
● Application relevance
● Global market presence
● Both standards are well established globally and go hand in hand to
provide contractual-based PQ measurement support (4-30) and
compliance reporting (EN50160)
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
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Proposed Power Quality Enhancements
Power Quality Function
Additional Power Quality
Modeling
Log Model Service Extensions
Time Synchronization
Description
Expanded logical node support for PQ
functions based on IEC 61000-4-30
Potential for power quality adaptations
Millisecond and tighter time synchronization to
support power quality event sequencing
Sequence Of Events Reporting Event sequence reporting via FTP server
Compliance Reporting
File based power quality compliance reports to
support standards like EN50160
Summary table of IEC 61850 proposed power quality enhancements.
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
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Conclusions
● IEC 61850 is a powerful standard with global support in the industry
and many technical qualities to support engineering workflows in the
design, maintenance and operation of modern electrical infrastructure.
● Using global power quality standards IEC 61850 can be enhanced to
provide key support for advanced power quality applications by:
● Improving logical node support,
● Improving time synchronization, and
● Utilizing file based reporting options.
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
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Thank you
Schneider Electric - Power Monitoring – Daniel Cumming– January 2011
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