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We consider the problem of finding the cheapest routing for a set of commodities over a directed graph, such that: i) each commodity flows through a single path, ii) the routing cost of each arc is given by a convex piecewise linear function of the load (i.e. the total flow) traversing it. We propose a new mixed-integer programming formulation for this problem. This formulation gives a complete description...
This paper proposes a new paradigm for distribution system operation under Active Network Management (ANM). The ANM method has essential role to facilitate the connection of new generations without need of reinforcement traditional network. This paper presents a cost function based on active management that minimize energy cost of Distribution Network Operator (DNO). The proposed objective function...
This paper proposes an optimal charging strategy for plug-in electric vehicles (PEVs) to be used in electric distribution networks. The optimization algorithm is made up of two phases: 1) an optimal power flow calculation; and 2) a linear optimization. The former, while taking into account the power system technical constraints, sets the upper bounds to the recharge power for each vehicle and the...
This paper proposes a new paradigm for distribution system operation with considering Demand Response Programs (DRP). In this paper is focused to study the effect of DRP on total cost function, where the time-based demand response programs have been modeled and consequently its influence on load profile has been discussed. This paper presents a cost function that minimizes energy cost of Distribution...
Unit commitment (UC) is a problem to economically determine the commitment status and generation level for each thermal unit during each time interval of the scheduled periods. The purpose of UC is to minimize the total generation cost while satisfying system demand, reserve requirements, and other unit constraints. The combined-cycled units have been increasingly installed throughout the world because...
Min, Veeravalli, and Barlas have recently proposed strategies to minimize the overall execution time of one or several divisible loads on a heterogeneous linear network, using one or more installments [18, 19]. We show on a very simple example that their approach does not always produce a solution and that, when it does, the solution is often suboptimal. We also show how to find an optimal scheduling...
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