TSO Comparison Group : An Overview. TSO Comparison Group Group - It is a group of the international electrical Transmission System Operators (TSOs) Area.

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


PlanningAfter The


Support


time


PlanningAfter The


Support


time


PlanningAfter The


Support


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

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FT

Es

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

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FTEs



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FTEs



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FTEs



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FTEs



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FTEs



Sum of five benchmark

results

Quality of System Operation(frequency, energy not supplied, Voltage)

Thank You

TSO Comparison Group : An Overview. TSO Comparison Group Group - It is a group of the international electrical Transmission System Operators (TSOs) Area.

Documents

system operation slide

system operation activities

data points

regulatory benchmark

overview slide

key system operation

tso comparison group

control center slide