Power Flows Control in a Closed Medium-voltage Electrical Network
DOI:
https://doi.org/10.24160/1993-6982-2025-6-38-49Keywords:
thyristor voltage regulator, longitudinal-and-quadrature regulation, closed electrical network, power flows, electric power quality, simulationAbstract
Contemporary electric power systems are undergoing major changes due to the growing complexity of their hierarchy, transformation into cyber-physical systems and increasing the rate with which distributed generation (DG) sources are introduced, including those based on renewable energy sources (RES). Problems in distribution electrical networks (DEN) containing RES based distributed generation associated with undesirable active and reactive power flows between sources, and deterioration in the quality of electricity transmitted entail additional loss of electricity and lower system stability as a whole. Existing voltage and power control devices do not meet the regulatory requirements imposed on them during operation in medium-voltage DENs. The problem of power flows control and voltage level stabilization in a closed 6-20 kV DEN with RES based distributed generation can be solved using a thyristor voltage regulator (TVR). TVR is a semiconductor voltage boosting device with the possibility of longitudinal (value) and quadrature (phase angle) voltage regulation. The article describes a study of the effect the longitudinal-transverse TVR regulation modes have on the parameters of a closed DEN with RES based distributed generation. For carrying out the study, a Matlab model of a closed-circuit DEN with two power sources, TVR, and loads was developed. The operation principle of the model TVR unit longitudinal-qua control is considered. The results of studying the TVR with longitudinal-and-quadrature control in the decreasing-lagging and increasing-advancing modes have shown the TVR ability to effectively redistribute the load between power sources while maintaining the voltage on the load busbars within acceptable limits.
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Для цитирования: Соснина Е.Н., Кралин А.А., Бедретдинов Р.Ш., Крюков Е.В., Гусев Д.А. Управление потоками мощности в замкнутой электрической сети среднего напряжения // Вестник МЭИ. 2025. № 6. С. 38—49. DOI: 10.24160/1993-6982-2025-6-38-49
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Работа выполнена при поддержке Российского научного фонда (грант № 24-29-00872), https://rscf.ru/project/24-29-00872/
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Конфликт интересов: авторы заявляют об отсутствии конфликта интересов
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For citation: Sosnina E.N., Kralin A.A., Bedretdinov R.Sh., Kryukov E.V., Gusev D.A. Power Flows Control in a Closed Medium-voltage Electrical Network. Bulletin of MPEI. 2025;6:38—49. (in Russian). DOI: 10.24160/1993-6982-2025-6-38-49
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The Work was Supported by the Russian Science Foundation (Grant No. 24-29-00872), https://rscf.ru/project/24-29-00872
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Conflict of interests: the authors declare no conflict of interest
