Power Quality Enhancements for IEC Winston CHUA Ywee Ming South-East Asia Business Development Manager Energy Management Solution September 19, 2011

Schneider Electric 2 - Power Monitoring – Daniel Cumming– January 2011 IEC – 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 communication links Something needed to change:  IEC standard creation

Schneider Electric 3 - Power Monitoring – Daniel Cumming– January 2011 IEC – 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 Today’s SmartGrid Enabler ConsumersDistributionTransmission IEC Core Functions IEC is moving from primary substations into other areas of the power system including, wind power, hydro and distributed energy resources. IEC Evolutions

Schneider Electric 5 - Power Monitoring – Daniel Cumming– January 2011 IEC – Key to the Smartgrid Reduced Cost of Ownership Vendor Independence Broad Application Support

Schneider Electric 6 - Power Monitoring – Daniel Cumming– January 2011 Global Emergence of IEC Slow adoption Fast adoption Strong industry support for the prescription and participation in the formation of the IEC standard. Adoption unclear

Schneider Electric 7 - Power Monitoring – Daniel Cumming– January 2011 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 8 - Power Monitoring – Daniel Cumming– January 2011 The Substation Of Tomorrow A unified approach with IEC 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 PQ Features Power Quality FunctionDescription COMTRADEFault recording FTPDownload of fault records and/or device setup RDRELogical node (LN) for fault record alarming MHAILN for harmonics reporting MFLKLN for flicker reporting MSQILN for imbalance calculations MMXULN for voltage frequency QFVRLN for frequency variation reporting QITRLN for current transient reporting QUIBLN for current unbalance variation reporting QVTRLN for voltage transient reporting QVUBLN for voltage unbalance variation reporting QVVRLN for voltage variation reporting Log Model ServiceData logging state machine SNTPDevice internal time clock synchronization Summary table of IEC Edition 2 power quality relevant functions.

Schneider Electric 10 - Power Monitoring – Daniel Cumming– January 2011 Proposed Power Quality Enhancements ●Adoption of IEC and EN50160 as PQ enhancements for IEC 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 11 - Power Monitoring – Daniel Cumming– January 2011 Proposed Power Quality Enhancements Power Quality FunctionDescription Additional Power Quality Modeling Expanded logical node support for PQ functions based on IEC Log Model Service ExtensionsPotential for power quality adaptations Time SynchronizationMillisecond and tighter time synchronization to support power quality event sequencing Sequence Of Events ReportingEvent sequence reporting via FTP server Compliance ReportingFile based power quality compliance reports to support standards like EN50160 Summary table of IEC proposed power quality enhancements.

Schneider Electric 12 - Power Monitoring – Daniel Cumming– January 2011 Conclusions ●IEC 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 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