Abstract
The strategy for the development of the electric power industry in the Russian Federation until 2030 creates conditions for the commissioning of a large number of sources with small generation, including renewable ones. Such a tendency will provide consumers with relatively inexpensive and pure energy. However, in the Russian Federation, the introduction of sources with small generation and renewable ones is only gaining pace. An increase in the number and power from such sources will result in unification to local systems. Thus, in order to increase the reliability and efficiency of power supply systems with distributed generation sources, it is advisable at the pro-exit stage to solve several tasks, such as the determination of the optimal connection point to the external system and the best network configuration definition. When developing an algorithm, it is necessary to take into account the limitations on the bandwidth of the elements and balance limitations. In addition, the choice of the optimal connection point to the external network should provide reliable and economical power supply. This paper proposes an approach that allows you to evaluate the distribution device reliability at the main pioneering substations, which for 6-10 kV power supply systems are the points of connection to the external network. The main task of the developed algorithm is to define the economics damage from the power break. When calculating the amount of damage, the research group took into account both the probable characteristics, based on the calculation of the reliability indicators of the distribution device (restoration time and failure parameter), and the difference in electricity tariffs when switching consumers to a backup external source, as well as a change in loss in Power supply system. In the article, using the scheme with two working bus systems, an example of calculating the reliability indicators for typical equipment of 110 and 220 kV distribution devices is given.
Keywords
Distributed generation, optimal condition, model, switchgear, damage from power break, power supply system, low generation sources.
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