Abstract
The article proposes an approach to determine the optimal location of distributed generation sources in the power supply systems. The development of the approach is due to the need to increase the operating efficiency of existing and commissioned electric power facilities. The work reflects a technique that makes it possible, at the stage of designing a new or reconstruction of an existing electric network, to search for an economically feasible installation site for electric and thermal energy sources depending on their capacity and distance from consumers. The criterion of optimality is the minimum cost of power transmission in the network. The algorithm is implemented using the direct enumeration method. The restrictions on the throughput of individual elements of the power supply system (power lines, transformers) and the allowable voltage loss in its nodes are taken into account. The technique is adapted to the conditions of the KATRAN-OptActivePower software and computer complex. The determination of the cost of power loss in the network is determined using a modified dynamic programming method in combination with the sequential equivalentization method. For the initial data for the calculation, technical and economic models of generators are used, which are the dependence of power on the cost per ton of fresh steam needed to generate thermal and electric energy for sources of thermal power plants, and the dependence of power on the cost of the energy source used for gas turbine, combined-cycle and gas piston units. The models take into account the operational characteristics of energy sources and are presented in the tabular form. The article provides calculations to assess the optimal installation location of generators in the conditions of the current power supply system according to the criterion of the minimum cost of active power loss.
Keywords
Electric network, power supply system, distributed generation, gas turbine installation, combined-cycle plant, technical and economic indicators, costs, power losses, electricity tariff.
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