Power Quality Enhancements for IEC 61850 Winston CHUA Ywee MingSouth-East Asia Business Development ManagerEnergy Management SolutionSeptember 19, 2011

Schneider Electric 2- Power Monitoring – Daniel Cumming– January 2011

IEC 61850 – Motivation

Substation automation:

Applications must deal with numerous protocols, data formats and data addressing

• Limited interoperability

• High integration costs

• High maintenance costs

Need of a reliable electric service

Strong level of automation

= multiple electronic devices

Multiple protocols and communicati

on links

Something needed to change:

IEC 61850 standard creation

Schneider Electric 3- Power Monitoring – Daniel Cumming– January 2011

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 4- Power Monitoring – Daniel Cumming– January 2011

IEC 61850 - Today’s SmartGrid Enabler

ConsumersDistributionTransmission

IEC 61850 Core Functions

IEC 61850 is moving from primary substations into other areas of the power system including, wind power, hydro and distributed energy resources.

IEC 61850 Evolutions

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IEC 61850 – Key to the Smartgrid

Reduced Cost of Ownership

Vendor Independence

Broad Application Support

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Global Emergence of IEC 61850

Slow adoption

Fast adoption

Strong industry support for the prescription and participation in the formation of the IEC 61850 standard.

Adoption unclear

Schneider Electric 7- Power Monitoring – Daniel Cumming– January 2011

Today’s Modern SubstationMany competing protocols each doing something slightly different and some level of proprietary communication to low level process equipment.

Schneider Electric 8- Power Monitoring – Daniel Cumming– January 2011

The Substation Of TomorrowA 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 9- Power Monitoring – Daniel Cumming– January 2011

Existing IEC 61850 PQ Features

Power Quality Function Description

COMTRADE Fault recordingFTP Download of fault records and/or device setupRDRE Logical node (LN) for fault record alarmingMHAI LN for harmonics reportingMFLK LN for flicker reportingMSQI LN for imbalance calculationsMMXU LN for voltage frequencyQFVR LN for frequency variation reportingQITR LN for current transient reportingQUIB LN for current unbalance variation reportingQVTR LN for voltage transient reportingQVUB LN for voltage unbalance variation reportingQVVR LN for voltage variation reportingLog Model Service Data logging state machineSNTP Device internal time clock synchronization

Summary table of IEC 61850 Edition 2 power quality relevant functions.

Schneider Electric 10- Power Monitoring – Daniel Cumming– January 2011

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)

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Proposed Power Quality Enhancements

Power Quality Function DescriptionAdditional Power Quality Modeling

Expanded logical node support for PQ functions based on IEC 61000-4-30

Log Model Service Extensions Potential for power quality adaptationsTime Synchronization Millisecond and tighter time synchronization to

support power quality event sequencingSequence Of Events Reporting Event sequence reporting via FTP serverCompliance Reporting File based power quality compliance reports to

support standards like EN50160

Summary table of IEC 61850 proposed power quality enhancements.

Schneider Electric 12- Power Monitoring – Daniel Cumming– January 2011

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 13- Power Monitoring – Daniel Cumming– January 2011

Thank you