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Анализ ÑƒÑÑ‚Ð°Ð½Ð¾Ð²Ð¸Ð²ÑˆÐ¸Ñ ÑÑ и Ð¿ÐµÑ€ÐµÑ Ð¾Ð´Ð½Ñ‹Ñ Ñ€ÐµÐ¶Ð¸Ð¼Ð¾Ð² в электроэнергетической системе 750/330 кВ

выпускная квалификационная работа бакалавра

Анализ ÑƒÑÑ‚Ð°Ð½Ð¾Ð²Ð¸Ð²ÑˆÐ¸Ñ ÑÑ и Ð¿ÐµÑ€ÐµÑ Ð¾Ð´Ð½Ñ‹Ñ Ñ€ÐµÐ¶Ð¸Ð¼Ð¾Ð² в электроэнергетической системе 750/330 кВ

Abstract

Тема выпускной квалификационной работы: «Анализ установившихся и переходных режимов в электроэнергетической системе 750/330 кВ». В данной работе произведен выбор оборудования электроэнергетической системы – силовых трансформаторов с учетом аварийной перегрузки на 40 % сверх номинального тока на время максимумов нагрузки и сечений проводов линий электропередачи с последующей проверкой по техническим условиям. Выполнен расчет установившегося режима работы элементов электроэнергетической системы «вручную» и вариантные расчеты с помощью программного обеспечения, в котором были реализованы режимы максимальных и минимальных нагрузок. С целью поддержания требуемого уровня напряжений в системе и оптимизации режима выбраны номера отпаек РПН трансформаторов и автотрансформаторов и определен перечень компенсирующих устройств. Рассчитаны токи и напряжения при двухфазном коротком замыкании на землю с помощью метода симметричных составляющих, и на основании моделирования в специализированном программном комплексе этого же аварийного возмущения осуществлен анализ динамической устойчивости рассматриваемой энергосистемы. Определено предельное время отключения короткого замыкания и предложены мероприятия по повышению устойчивости.

Theme of final qualification work: “Analysis of steady and transient conditions in the electric power system 750/330 kV”. In this work, the choice was made of the equipment of the electric power system - power transformers, considering emergency overload by 40% over the rated current for the time of maximum loads and wire cross sections of power lines with subsequent verification according to technical conditions. The calculation of the steady-state operation mode of the elements of the electric power system "manually" and the variant calculations using the software in which the maximum and minimum load modes were implemented. In order to maintain the required voltage level in the system and optimize the mode, the tap numbers of on-load tap changers of transformers and autotransformers were selected, and a list of compensating devices was determined. The currents and voltages are calculated for a two-phase short circuit to ground using the method of symmetrical components and based on the simulation in a specialized software package of the same emergency disturbance, the dynamic stability of the power system under consideration is analyzed. The short-circuit breaking time has been determined and measures to increase stability have been proposed.

Keywords

динамическая устойчивость, Ð¿ÐµÑ€ÐµÑ Ð¾Ð´Ð½Ñ‹Ðµ процессы, установившийся режим, электрические сети, trancient processes, dynamic stability, on-peak conditions, steady-state mode, unbalanced short-circuit, несимметричное короткое замыкание, electric power system, режим Ð¼Ð°ÐºÑÐ¸Ð¼Ð°Ð»ÑŒÐ½Ñ‹Ñ Ð½Ð°Ð³Ñ€ÑƒÐ·Ð¾Ðº

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selected citations
These citations are derived from selected sources.
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!
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