Time based pricing for allocation of fixed cost in distribution networks

摘要

Majority of distribution tariffs in the world, price electricity through traditional averaging to avoid practical difficulties associated with advanced pricing strategies. This paper analyzes allocation of infrastructure cost, in a more absolute, practical and a cost-reflecting manner. It derives a time based price (TBP) per unit of energy from incremental cost of energy and allocates fixed cost to either active or both active and reactive components. The proposed method is straightforward and simple in its implementation. A TBP calculation was applied for actual load patterns of an 11 kV distribution network in Sri Lanka, spread over 37 km. The results verify the cost reflectivity.