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Analysis of steady-state and transient conditions in the power supply system 330/220 kV

выпускная квалификационная работа бакалавра

Analysis of steady-state and transient conditions in the power supply system 330/220 kV

Abstract

В данной работе произведено исследование системы электроснабжения 330/220 кВ и выполнен анализ установившихся и переходных режимов. Представлен процесс выбора основного электротехнического оборудования в системе энергоснабжения. Произведен расчет установившегося режима трехмашинной электроэнергетической системы аналитическим и программным методом. Определен ток несимметричного короткого замыкания на шинах одной из подстанций с помощью метода симметричных составляющих и построены векторные диаграммы фазных величин. Найден предел динамической устойчивости представленной системы. С помощью продольного электрического торможения успешно увеличен предел динамической устойчивости, что подтверждают соответствующие графические зависимости взаимного ускорения от взаимного угла генераторов. Кроме того, подтверждена динамическая устойчивость системы при возникновении однофазного короткого замыкания на шинах второй подстанции при использовании ОАПВ. Также было найдено предельное время ТАПВ при трехфазном коротком замыкании.

In this work we studied the power supply system 330/220 kV and analyzed the steady-state and transient conditions. The process of choosing the main electrical equipment in the power supply system is presented. The steady-state mode of a three-machine electric power system was calculated using an iterative and software methods. The unbalanced short-circuit current on the buses of one of the substations is determined using the symmetric leaving method and vector diagrams of phase quantities are constructed. The limit of the dynamic stability of the presented system is determined. Using longitudinal electric braking, the dynamic stability limit has also been successfully increased, which can be noted by paying attention to the corresponding graph of mutual acceleration from the mutual angle of the generators. In addition, the dynamic stability of the system was confirmed when a single-phase short circuit occurred on the buses of the second substation when using the SPAR of overhead transmission lines. The limit time of the TPAR with a three-phase short circuit was also determined.

Keywords

динамическая устойчивость, компенсирующее уcтройство, правило моментов, electrical supply, electrical systems and networks, электроснабжение, unbalanced short-circuit, transient stability of a power system, symmetrical component method, level principle, compensating installation, transient fault, Ð¿ÐµÑ€ÐµÑ Ð¾Ð´Ð½Ñ‹Ð¹ процесс, метод ÑÐ¸Ð¼Ð¼ÐµÑ‚Ñ€Ð¸Ñ‡Ð½Ñ‹Ñ ÑÐ¾ÑÑ‚Ð°Ð²Ð»ÑÑŽÑ‰Ð¸Ñ, электрические системы и сети, установившейся режим, steady-state mode, несимметричное короткое замыкание

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  • citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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