Transcript Slide 1

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
4,600kilometres .
•
Operates at 500kV, 330kV, 275kV, 220kV, 132kV,
110kV and 66kV
200+ generating units ranging from 18MW to 700MW
Approximately 7.7million customers
Maximum demand of approximately 30,000MW
Annual energy of 160,000GWh worth $8 billion.
Split into 6 interconnected regions with single price per
region.
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Electricity Market Regions
•Installed capacity = 40000 MW
Queensland
8344 MW
(9965MW)
QNI
Directlink
750 MW
180 MW
-1078 MW
-180 MW
•Maximum demand = 31500 MW
Snowy
S Australia
2916 MW
(3200MW)
V-SA
480 MW
-300 MW
Murraylink
220 MW
-220 MW
Victoria
0MW
3000 MW
V-SN
1100 MW
-1900 MW
9062 MW
(8400MW)
13292 MW
Snowy1
(12370MW)
3000 MW
-1100 MW
Tasmania
Basslink
630MW
-480 MW
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New South Wales
1666 MW
(2500MW)
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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
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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 7x2
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
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5
Control Room
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6
NDSC Overview
TNSP
NDSC
South
…………………………
…
SCADA / EMS
TNSP
SCADA / EMS
SCADA / EMS
NDSC
North
SCADA / EMS
Virtual Control Room
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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
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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
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$
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
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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.
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11
PI Products used by NEMMCO
• ProcessBook
• Datalink / Excel
• ACE
• RtAlerts
• RtWebParts
• ActiveView
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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
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PI ACE
• Automatic Frequency Conformance Report
Generation
• Interface Control
• SCADA Outage Monitoring & Reporting
• OSM Phase Angle Monitor
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NEMMCO PI System
NORPEPI1
Processbook
& Datalink
Users
NAS
Backup
NAS
Backup
Web Users
MANEPIW2
RtWebParts
MANEPIS1
PItoPI
Main
PItoPI
Tas
CAREPIS1
RtAlerts
Mail
Server
MANEACE1
PIHC1
SCADA
PIHC2
Main
PItoPI
Main
PItoPI
Tas
RtAlerts
Mail
Server
NOREACE1
PIHC3
Tas
PIHC1
SCADA
MANEPIA2
SNMP
MANEPIA1
AGC
DTS
DTS PI Server
OSM
Perfmon
HTML
PIHC3
Tas
CAREPIA2
SNMP
Non Windows Devices
PIHC2
Main
CAREPIA1
HTML
Perfmon
AGC
BOM Website
Mansfield
EMS
Windows Servers
Norwest
EMS
OSM Server
TNSP’s
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ProcessBook – System Summary
• System Summary
– Frequency
– Demand
– Generation
– Reserve
– Temperature
– Interconnector flows
– Prices
– Many small trends
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16
ProcessBook – Regional Summary
• Regional Summary
– Demand
– Generation
– Interchange
– Power Station totals
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17
ProcessBook - AGC
• AGC Performance
– Generator
dispatch targets
– AGC set point
– Generator output
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18
ProcessBook – Voltage Control
• Goes across three monitors
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ProcessBook - Dispatch
• Past and projected
interconnector flows
– Yellow, 30 min projection
– Magenta, 3 hr projection
• NEMMCO Custom Toolbar
– Server selection
– Time selection
– Default server option
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20
Processbook – Site Environment
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Processbook – Server Performance
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22
RtWebParts – EMS Overview
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RtWebParts – EMS Process
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RTWebParts PI Server Overview
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25
RtWebparts – NEM Overview
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Future – Proposed Upgrade to HA
Mail
Server’s
Web Users
ACE Collective
IIS /
RtAlerts
DTS1
PI Server
DTS1
DTS2
PI Server
DTS2
Web Users
IIS /
RtAlerts
MANEACE1
NOREACE1
Primary
Secondary
MS Sharepoint Webfarm?
MANEPIW2
NOREPIW2
Processbook
& Datalink
Users
PI Server Collective
MANEPIS1
CAREPIS1
Primary
Secondary
Interface Collective
Interface Collective
PIHC1a PIHC2a PIHC3a
SCADA Main
Tas
PIHC1b PIHC2b PIHC3b
SCADA Main
Tas
PIHC1a PIHC2a PIHC3a
SCADA Main
Tas
PIHC1b PIHC2b PIHC3b
SCADA Main
Tas
MANEPIA3
MANEPIA4
NOREPIA3
NOREPIA4
SNMP Perfmon HTML
SNMP Perfmon HTML
SNMP Perfmon HTML
SNMP Perfmon HTML
AGC
AGC
Mansfield
EMS
Norwest
EMS
BOM Website
Windows Servers
Non Windows Devices
TNSP’s
Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved.
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Copyright © 2007 OSIsoft, Inc. Company Confidential. All rights reserved.
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