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LEW - Dr. Peter Birkner 01.05.2003 1 CIRED Guaranty of Supply Availability in a Competitive Environment – Strategy and Experience of a German Distribution.

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Presentation on theme: "LEW - Dr. Peter Birkner 01.05.2003 1 CIRED Guaranty of Supply Availability in a Competitive Environment – Strategy and Experience of a German Distribution."— Presentation transcript:

1 LEW - Dr. Peter Birkner CIRED Guaranty of Supply Availability in a Competitive Environment – Strategy and Experience of a German Distribution Company CIRED Conference 2003, Barcelona Contribution to Session 2, Block 4 Dr.-Ing. Peter Birkner, Business Unit System Operation, Lechwerke AG, Augsburg, Germany

2 LEW - Dr. Peter Birkner CIRED Improvement of System Information via Fault Distance Location Relays Improvement of grid performance despite of reduction of number of service points

3 LEW - Dr. Peter Birkner CIRED Improvement of System Information via Fault Distance Location Relays Restrictions on reclosure of overhead line feeders due to legal con- siderations lead to an increase of non delivered energy per outage

4 LEW - Dr. Peter Birkner CIRED Improvement of System Information via Fault Distance Location Relays Development of fault location strategy in the 20 kV grid: 1)Fault location via systematic trial and error 2)Fault distance location relays in all feeders 3)Fault distance location relays in transformer switch bay Dig. DIS 1 2 3

5 LEW - Dr. Peter Birkner CIRED Improvement of System Information via Fault Distance Location Relays 1,000 kWh non delivered energy per outage in the case of 1.0 – 1.5 outages per year 2,000 kWh non delivered energy per outage in the case of 0.5 outages per year 3,000 kWh non delivered energy per outage in the case of 0.1 outages per year If a customer experiences an outage less often, non delivered energy per outage can be increased: E(Deficiency Probability) = E(Outage Duration) x E(Outage Frequency) E(Non Delivered Energy) = E(Deficiency Probability) x Outage Power


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