TSO Comparison Group : An Overview
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TSO Comparison Group : An Overview
TSO Comparison Group
Group - It is a group of the international electrical Transmission System Operators (TSOs)
Area of Operation - Asia, Europe, Africa, Middle East, South Pacific and North and South America
Year of Inception - 1995.
Total Members - 22
Mission :
To exchange information on current and future System
Operation practices for the purpose of benchmarking
Focus Area :
On System Operation activities which are usually
concentrated in or close to the Control Center
Objectives
• To have Performance Measures Database (> 50 data points)
• Comparing with other TSOs (Benchmark Model)• Identification of peers (Company profiles / Activity Lists)• Learning from other TSOs (Best Practice)• Informal contacts and TSO Questionnaires
(Networking)• Counter Benchmark to Regulatory Benchmark
The TSO Comparison Group members…
• Amprion, Germany• China Southern Power Grid• CLP Power (Hong Kong)• Eirgrid (Ireland)• ESKOM (South Africa)• EWA (Bahrain)• Fingrid Oyj (Finland)• Hydro Quebec (Canada)• Landsnet (Iceland)• National Grid Transco (UK)• PJM Interconnection (USA)
• POWERGRID, India• PSE-O (Poland)• Red Electrica de España SA• REN (Portugal)• Statnett SF (Norway)• Svenska Kraftnatt (Sweden)• Swissgrid• TenneT BV (Netherlands)• Transpower (Germany)• Transpower (New Zealand)
Activities included :
• load/generation balancing, • ancillary services • network operation tasks • markets operation • influence of power markets on system operation
Some examples of the activities that are considered to be non-SO activities:
• System Expansion Planning;• Power Market Administration / Power Exchange:
Facilitate buying and selling of electricity and related products by organizing e.g. energy auction;
• Metering and Data Collection; • Ancillary services provision: Providing the contracted
ancillary services like generation reserves, losses, reactive support, etc.
For Benchmark purposes a ‘standard TSO’ with five key System Operation processes has been defined..
SchedulingOperations
PlanningAfter The
FactReal TimeOperation
Support
1 year ahead 2 weeks ahead day of operationAfter day of operation
time
SchedulingOperations
PlanningAfter The
FactReal TimeOperation
Support
1 year ahead 2 weeks ahead day of operationAfter day of operation
time
SchedulingOperations
PlanningAfter The
FactReal TimeOperation
Support
1 year ahead 2 weeks ahead day of operationAfter day of operation
time
SchedulingOperations
PlanningAfter The
FactReal TimeOperation
Support
1 year ahead 2 weeks ahead day of operationAfter day of operation
time
..and a process which takes into account the remaining differences between TSOs
Data Collected annually since 2000,validated by KEMA, verified by group
Operations Planning (1 year to 2 weeks before day of operation) Number of Planned Transmission
Outages Number of Planned Generating-unit
OutagesScheduling (2 weeks to 1 day before day of operation): Accuracy of peak load forecast Accuracy of minimum load forecast Transmission congestion:
Generation constrained "on". Foreseen transmission concerns Scheduled transmission outage
requests Scheduled generation outagesReal Time Operation (Day of Operation): Frequency control performance Average overall system deviation Generation and load instructions Personnel on shift RTO transmission outages taken
Support Operator training hours of teachers Number of SCADA database points
(Status points, Analog points, Control points)
Overall Performance: Transmitted energy at risk Response Time of Area Control
Error or Frequency Energy unsupplied due to
'unsupplied energy incidents' Unsupplied energy incidents Voltage excursionsReference Data Number of Staff in Full Time
Equivalents, separately for each process
Costs, separately for each process and network losses
Network date, including e.g. Circuit Ends, Line lengths, Generators, Peak Load, Transmitted Energy, Interconnectors.
Example of data points:
For each process, two benchmark models have been developed…
TSO ProcessInput(staff, cost)
Output(uniform)
Environmental Factors(e.g. network size)
..Here, an example of one of the 10 benchmark models is shown
The Group of International Comparison
of Transmission System Operation Practices
Operations Planning
InputFTE
Output(uniform)
Environmental FactorsEF1: Network Size (circuit ends, generators, interconnectors)
EF2: Planned Outages (Transmission and Generation)
iii EFEFcFTE ,22,11
Model parameters based on regression of TSO data
Which results in an assessmentfor each process for FTE and Cost
0
5
10
15
20
25
30
35
40
45
50
FT
Es
Actual 2005 FTEsBenchmark results (dots) with standard deviation
Actual 2005 FTEsBenchmark results (dots) with standard deviation
Example of Benchmark Results
Details are available for members
Sharing of Practices by Out Performers
Results of benchmark models and key activity matrices are used for the identification of out-performers on the different processes. These out-performers present their practices on this process in more detail during workshops of the TSO Comparison Group, which enables both learning from best practice and improvement of existing benchmark models.
Simultaneously differences between TSOs are being investigated…
The Group of International Comparison
of Transmission System Operation Practices
Not done Receive Forecast DetermineOutage management 2 TSOs 18 TSOs
Network capability 1 TSO 2 TSOs 6 TSOs 11 TSOsContingency planning
2 TSOs 1 TSO 1 TSO 16 TSOs
Switching programmes
5 TSOs 15 TSOs
Interconnector transfers
3 TSOs 3 TSOs 14 TSOs
Emergency preparedness
1 TSO 1 TSO 18 TSOs
Demand forecast 3 TSOs 1 TSO 5 TSOs 11 TSOsGeneration schedule 5 TSOs 1 TSO 5 TSOs 9 TSOs
Hydro management 7 TSOs 2 TSOs 2 TSOs 9 TSOs
Manage transmission losses
5 TSOs 15 TSOs
AS requirement 6 TSOs 3 TSOs 11 TSOsAS procurement 4 TSOs 16 TSOs
Ancillary Services (AS) management
Activity levelTask Description
Transmission network assessment
Energy assessment
(A) Network Analysis
(B) SCADA / EMS Display,Monitoring and Visualisation(C) SCADA / EMS Database(and real-time enablers)(D) Training Simulator
(E) Operations Planning
(F) Transactions Scheduling
(G) History & Forecasting
(H) TSO Data andInformation Exchange(I) Market Based Applications
(J) others
Average costs(A) Network Analysis
(B) SCADA / EMS Display,Monitoring and Visualisation(C) SCADA / EMS Database(and real-time enablers)(D) Training Simulator
(E) Operations Planning
(F) Transactions Scheduling
(G) History & Forecasting
(H) TSO Data andInformation Exchange(I) Market Based Applications
(J) others
Average costs
Part of ‘Activity List for Operations Planning process’
Share in IT costs
Key Graph
In addition to the benchmark model TSO Comparison
Group has also developed a key graph which serves as
an executive summary of the whole results in a single
slide. This single slide summary provides an overview of
both use of ‘resources’ and the performance of the
member TSOs.
And summarized in management presentations
PERFORMANCE
RE
SO
UR
CE
S
Low Resources /
High Performance
High Resources / Low Performance
Average resources
Average performance
PERFORMANCE
RE
SO
UR
CE
S
PERFORMANCE
RE
SO
UR
CE
S
Low Resources /
High Performance
High Resources / Low Performance
Average resources
Average performance
0
5
10
15
20
25
30
35
40
45
50
FTEs
Actual 2005 FTEsBenchmark results (dots) with standard deviation
Actual 2005 FTEsBenchmark results (dots) with standard deviation
0
5
10
15
20
25
30
35
40
45
50
FTEs
Actual 2005 FTEsBenchmark results (dots) with standard deviation
Actual 2005 FTEsBenchmark results (dots) with standard deviation
0
5
10
15
20
25
30
35
40
45
50
FTEs
Actual 2005 FTEsBenchmark results (dots) with standard deviation
Actual 2005 FTEsBenchmark results (dots) with standard deviation
0
5
10
15
20
25
30
35
40
45
50
FTEs
Actual 2005 FTEsBenchmark results (dots) with standard deviation
Actual 2005 FTEsBenchmark results (dots) with standard deviation
0
5
10
15
20
25
30
35
40
45
50
FTEs
Actual 2005 FTEsBenchmark results (dots) with standard deviation
Actual 2005 FTEsBenchmark results (dots) with standard deviation
Sum of five benchmark
results
Quality of System Operation(frequency, energy not supplied, Voltage)
Thank You