Stefan Will E.ON Bayern AG Germany

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Presentation transcript:

Stefan Will E.ON Bayern AG Germany Reliability Analysis of MV Networks with Different Neutral Earthing Schemes Stefan Will E.ON Bayern AG Germany Klaus Schilling Siemens AG Germany

Geographic Diagram of Schwarzenbach Network 20 kV Network Schwarzenbach Schwarzenbach Substation Kulmbach Bayreuth Bamberg

Rural and Municipal Networks Basic Variant with Resonant Earthing Town Subnetwork with Low-Resistance Neutral Earthing

Frequencies of Supply Interruptions in 1/a Customer

Unavailability in min/a Customer

20 kV Live Line Working at E.ON Bayern Advantages for the customers Reduces customer outages Improved quality of supply Advantages for the network operator Lines can be operated continually Reduces expenses for notification of customers Advantages for the linesmen Reduces hazards due to switching errors Increases job safety

20 kV Live Line Working at E.ON Bayern