1. Optimal Distribution Planning: Meeting New Regulation Criteria for Reliability
LA Jorge, E Quaresma, F Mira 1
LAFM Ferreira, PMS Carvalho 2
SNC Grave, FFC Silva 3
LMF Barruncho 4
1 EDP Distribução Energia S.A.
2 Instituto Superior Técnico
3 Instituto de Optimização Aplicada
4 ITGeo, Grupo Edinfor S.A.
Portugal

2. Optimal Planning Costs to minimize: Investment costs
Energy losses costs
Reliability costs
What are the reliability costs?
ENS costs (Traditional criteria)
ENS costs + Interruption Penalties (New regulation criteria)

3. EDP Optimization Technologies
Name:
DPlan -- Distribution Planning
Possible Objectives/Constraints:
Arbitrarily complex objectives
Realistic constraints
Thorough evaluation.
Algorithm:
Lamarckian Evolutionary Hybrid
Network max size:
30,000 Nodes

4. Optimization Results on Interruption Duration
Traditional regulation criteria — customer outage time distribution for the optimal solution.
New regulation criteria — customer outage time distribution for the optimal solution.

5. Optimization Results on Interruption Frequency
Traditional regulation criteria — customer outage frequency distribution for the optimal solution.
New regulation criteria — customer outage frequency distribution for the optimal solution.

6. Traditional vs. New Optimal Reliability
The new regulation criteria reduces substantially both:
Customer indices
Customer over-time interruptions;
Customer over-frequency interruptions.
System indices
System average interruption duration index (SAIDI)
System average interruption frequency index (SAIFI)

7. Traditional vs. New Optimal Costs
New regulation criteria leads to: An investment growth An important cutoff on penalties A reduction on ENS

8. Another Case
New regulation criteria leads to: An investment growth A cutoff on penalties An increase on ENS

9. Conclusion
New regulation criteria changes optimal network development Changes the system optimal investment and increases its costs Changes the system average quality of service may improve it, or not The company has network optimization technologies to meet new regulation criteria This is an ongoing process We are prepared to meet such criteria