Abstract—One effective overvoltage control method for the automatic reclosing cycle (ARC) of long-distance high-voltage transmission lines is intelligent automatic reclosing. The method is based on the selection of a reclosing time that is optimal for reducing the intensity of the transient process. The article investigates the basic transient process patterns in the ARC and analyzes various automatic reclosing methods. The principle of superposition is used for the analysis as well as the proposed universal electrical network model, which describes the processes at all ARC stages. It is shown that the intensity of the transient process at the automatic reclosing directly depends on the ratio of the supply voltage and line voltage at the reclosing time. It is shown that the overvoltage level can be reduced by line reclosing at the breaker contacts’ voltage zero-crossing time or at the valley point of this voltage envelope, but the intelligent automatic reclosing is more effective, combining both approaches and performing reclosing at the zero-crossing time near the envelope valley. Computational experiments confirm that the reclosing time has a decisive influence on the overvoltage in the ARC, while the influence of the compensation degree and transmission angle is not so important.
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Translated by A. Kolemesin
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Ivanov, N.G., Naumov, V.A., Antonov, V.I. et al. Fundamentals of Intelligent Automatic Reclosing of Long-Distance Transmission Lines with Shunt Reactors. Russ. Electr. Engin. 90, 558–564 (2019). https://doi.org/10.3103/S1068371219080066
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DOI: https://doi.org/10.3103/S1068371219080066