Computer-Based Support of Fault Clearance in MV Networks Dipl.-Ing. S. Rolauffs, IAEW Dr.-Ing. S. K

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Computer-Based Support of Fault Clearance in MV
NetworksDipl.-Ing. S. Rolauffs, IAEWDr.-Ing.
S. Küppers, RWE NetDipl.-Ing. J. Weitmann, RWE
Net
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Fault Clearance in MV Networks

• Minimal restoration times
• Customer-specific evaluation of energy not
  supplied

• Adaptation to network topology and accessibility
  of substations

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Degrees of Freedom

• Restoration of supply
• after fault location
• during fault location (partial restoration)

• Optimization of access order and switching
  actions

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Optimization Method
Time-dependent data
Constant data

• Driving speed
• Access times to substations
• Times for visual inspections
• Probability of faults

• Network topology
• Telecontrol system
• Customers contracts
• Reserve power

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Example Comparison with simple strategies
mean restoration times of substations
60
min
max
30
min
0
without
with
without
with
PR
optimal
sequential
binary
Accesses
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Method for Optimization of Fault Clearance
Benefit

• Optimal restoration times shorter than with
  simple strategies
• Customer-specific adaptation of fault clearance

Necessary Data Precision

• Detailed modelling of topology and geography
  possible
• Almost optimal actions with simplified input data

Application

• Direct support during actual fault clearance
• Training with fault-locating personnel