NEMMCO Bryan Connell Terry Day Overview NEMMCO was

NEMMCO Bryan Connell Terry Day

Overview • NEMMCO was established in May 1996 to implement, administer and operate the wholesale NEM, continually improve its efficiency, and manage the security of the power system • NEMMCO operates on a self funding “Not for Profit” basis • In geographic terms, the NEM is the worlds longest transmission network, stretching from Cairns in northern Queensland to Hobart in Tasmania and Port Lincoln in South Australia. Approximately 4, 600 kilometres. • Operates at 500 k. V, 330 k. V, 275 k. V, 220 k. V, 132 k. V, 110 k. V and 66 k. V 200+ generating units ranging from 18 MW to 700 MW Approximately 7. 7 million customers Maximum demand of approximately 30, 000 MW Annual energy of 160, 000 GWh worth $8 billion. Split into 6 interconnected regions with single price per region. • • • Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 2

Electricity Market Regions • Installed capacity = 40000 MW Queensland • Maximum demand = 31500 MW S Australia 2916 MW (3200 MW) V-SA 480 MW -300 MW Snowy Murraylink 220 MW -220 MW Victoria 0 MW 3000 MW V-SN 1100 MW -1900 MW 9062 MW (8400 MW) New South Wales 13292 MW Snowy 1 (12370 MW) 3000 MW -1100 MW Tasmania Basslink 630 MW -480 MW Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 8344 MW (9965 MW) QNI Directlink 750 MW 180 MW -1078 MW -180 MW 1666 MW (2500 MW) 3

Market Types • Wholesale co-optimized Energy market – 5 minute Dispatch with ½ hour pricing & settlement • Frequency Control Ancillary Services (FCAS) – 8 separate markets • Fast Raise & Lower (6 sec) • Slow Raise & Lower (60 sec) • Delayed Raise & Lower (5 min) • Regulation Raise & Lower • Network Control Ancillary Services (FCAS) – Contracted Services • Voltage Control • System Restart • Network Loading Control • Full Retail Competition - MSATS Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 4

National Dispatch Security Centre’s • Located in Sydney & Brisbane • Co-primary / virtual control room NDSCs rather than traditional primary/disaster recovery sites • 5 shift staff split between the 2 NDSC’s working 7 x 2 rotation (12 hour) shifts – 2 network coordinators at each NDSC • 1 MW dispatch, 1 voltage var dispatch, 2 power system security divided geographically – 1 shift manager at one of the NDSCs Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 5

Control Room Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 6

NDSC Overview TNSP NDSC South …………… … SCADA / EMS TNSP SCADA / EMS

Why PI? • Existing historical data system was: – Great for event analysis eg playback on single line diagrams – Time consuming and difficult to use for data analysis, especially for data older than 2 months that had to be retrieved from tape • Existing trending system was: – OK for presentation – Clunky to set up – Not integrated with the historical system and limited in the scope of available data Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 8

Why PI - continued • Growing need for access to historical data for: – Control room operations – Power system event analysis and dispute resolution – Operations planning and forecasting – Power system performance analysis – Power system planning activities • Alternate vendor historical system was: – – Oracle based High capital cost Performance concerns Offered little on the client side Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. $ 9

PI Purchased • Purchased in 2001 as a historian and trending tool because: – Good clients for user interface, and nice integration with existing office tools – Good performance for storing and retrieving data modest server requirements – Efficient data storage modest storage requirements – Low (ish) capital cost and low risk entry with easy expansion (started with 10, 000 tags, now 30, 000 tags) – Good support arrangements eg. 24 hour telephone support – Extensive user base – Easy company to deal with Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 10

PI Issues • Lack of SCADA quality associated with tag values – Requires a second tag • One major issue with exception processing combined with interpolated trends – Fixed by going to step. Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 11

PI Products used by NEMMCO • Process. Book • Datalink / Excel • ACE

Interfaces in Use • Habconnect – Data sourced from multiple Habitat databases – ~ 19000 tags • PIPerfmon – ~ 200 devices, 8000 tags • SNMP – ~ 300 tags • HTML – BOM web site, 100 tags Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 13

PI ACE • Automatic Frequency Conformance Report Generation • Interface Control • SCADA Outage Monitoring & Reporting • OSM Phase Angle Monitor Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 14

NEMMCO PI System NORPEPI 1 DTS PI Server NAS Backup MANEPIW 2 Rt. Web. Parts MANEPIS 1 PIto. PI Main PIto. PI Tas Rt. Alerts CAREPIS 1 Mail Server MANEACE 1 PIHC 1 SCADA PIHC 2 Main PIto. PI Tas Rt. Alerts NOREACE 1 PIHC 3 Tas PIHC 1 SCADA MANEPIA 2 SNMP OSM Perfmon PIHC 2 Main PIHC 3 Tas CAREPIA 2 SNMP MANEPIA 1 AGC Mail Server CAREPIA 1 HTML Mansfield EMS Perfmon AGC Norwest EMS TNSP’s Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 15

Process. Book – System Summary • System Summary – Frequency – Demand – Generation – Reserve – Temperature – Interconnector flows – Prices – Many small trends Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 16

Process. Book – Regional Summary • Regional Summary – Demand – Generation – Interchange

Process. Book - AGC • AGC Performance – Generator dispatch targets – AGC set

Process. Book – Voltage Control • Goes across three monitors Copyright © 2007 OSIsoft,

Process. Book - Dispatch • Past and projected interconnector flows – Yellow, 30 min projection – Magenta, 3 hr projection • NEMMCO Custom Toolbar – Server selection – Time selection – Default server option Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 20

Processbook – Site Environment Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved.

Processbook – Server Performance Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved.

Rt. Web. Parts – EMS Overview Copyright © 2007 OSIsoft, Inc. Company Confidential. All

Rt. Web. Parts – EMS Process Copyright © 2007 OSIsoft, Inc. Company Confidential. All

RTWeb. Parts PI Server Overview Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights

Rt. Webparts – NEM Overview Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights

Future – Proposed Upgrade to HA Mail Server’s ACE Collective IIS / Rt. Alerts DTS 1 PI Server DTS 1 DTS 2 PI Server DTS 2 IIS / Rt. Alerts MANEACE 1 NOREACE 1 Primary Secondary MS Sharepoint Webfarm? MANEPIW 2 NOREPIW 2 PI Server Collective Interface Collective MANEPIS 1 CAREPIS 1 Primary Secondary Interface Collective PIHC 1 a PIHC 2 a PIHC 3 a SCADA Main Tas PIHC 1 b PIHC 2 b PIHC 3 b SCADA Main Tas MANEPIA 3 MANEPIA 4 NOREPIA 3 NOREPIA 4 SNMP Perfmon HTML AGC Mansfield EMS Norwest EMS TNSP’s Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved. 27