This paper demonstrates the method of optimizing the location and size of the distributed generators with the aim of reducing active power loss by changing the state of the existing tie and sectionalizing switches on the distribution network. A new algorithm is proposed to solve the distribution network reconfiguration problem based on the Runner-root Algorithm (RRA). In the first stage, the Runner-root algorithm is applied to solve the reconfiguration problem, and the next stage of optimizing the new distribution network configuration takes into account the influence of the location and the size of the distributed generators. The calculation results show that the proposed method can simultaneously solve the problem of optimizing the location and size of distributed generators when reconfiguring the distribution network. The results of the comparison with other studies in the same distribution network system 69 nodes showed that the proposed method is highly effective and can be used for reference in the process of optimizing the operating mode of a distribution network.
PURPOSE. Consider the problem of unbalance of loads in electrical 0.4 kV networks, causing additional losses of electricity. Particular attention should be paid to networks with predominantly single-phase loads distributed along 0.4 kV lines. (rural electrical networks). To analyze the methods of balancing voltages and loads, both at the stage of designing electrical networks, and during their operation. Keep in mind that even with a properly designed electrical network with a uniform distribution of single-phase loads by phases during operation, due to the random nature of connecting new loads, including short-term connections, (for example, new household electrical receivers), current loads become asymmetric. Particular attention is paid to the issue of balancing load currents by switching them from the most loaded phases to the least loaded ones. Such switching is carried out on power transmission towers using the experience of operating personnel. To develop an algorithm for balancing current loads with the maximum exclusion of the human factor during balancing, using the readings of smart electricity meters as input data. The main idea of the algorithm is the calculation of modes for possible switching.METHODS. An algorithm that uses preliminary calculations of possible phase switching. When calculating the modes, the Newton-Raphson method was used, implemented by Matlab program.RESULTS. The article describes the relevance of the topic, considers the effect of asymmetry on the operation of electrical network elements.CONCLUSION. Calculations substantiating the main provisions of the phase switching optimization algorithm for balancing current loads are presented.
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