Abstract
Currently, the works of domestic and foreign scientists explore options for improving medium-voltage electrical grids by introducing distributed automation tools. However, statistical data on the configuration of existing rural power grids of 10 kilovolts are not sufficiently presented in the literature. (Research Purpose) The research purpose is analyzing the configuration of rural electrical grids of 10 kilovolts, taking into account the transformer substations connected to them and the types of wires used. (Materials and methods) The analysis of 165 supporting schemes of 10 kilovolt overhead power transmission lines of one of the electric grid companies was carried out. (Results and discussion) It is found out that the arithmetic mean of the length of the overhead line of 10 kilovolts to the most remote point of the grid is 9.2 kilometers, and the total length is 13.2 kilometers. It is found that that the specific power per kilometer of the rural grid of 10 kilovolts is 82 kilovolt amperes per kilometer. At the same time, an average of 5 taps are from one 10-kilovolt line, and the average length of the them is 0.68 kilometers. It was also revealed that 72 percent of the total length of the analyzed power transmission lines of 10 kilovolts does not meet the requirements for mechanical strength under icy and wind loads. (Conclusions) The analysis reflects the current configuration of rural 10 kV power grids in the Orel region, while 10 kV overhead lines in other regions may have their own characteristics.
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