Performance comparison of Transmission Network Expansion Planning under deterministic and uncertain conditions

Transmission Network Expansion plans determined considering deterministic or uncertain conditions are evaluated under demand and cost scenarios different from the original design scenarios. Performance is measured in terms of minimization of the total expected cost and the range of the operational costs over the new set of assumed scenarios. A test problem for a real network in Brazil is presented to assess the robustness of the expansion plans. It is found that transmission plans considering uncertainty performed better than plans under deterministic conditions both in terms of minimization of the total expected cost and the range of operational costs.

► Transmission plans considering deterministic or uncertain conditions are evaluated.
► Demand and cost scenarios different from the original design scenarios are used.
► Performance is measured in terms of minimization of the total expected cost.
► A test problem for a real network in Brazil is presented.
► Transmission plans under uncertainty performed better than deterministic plans.