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Модернизация электрической части ТЭЦ

выпускная квалификационная работа магистра

Модернизация электрической части ТЭЦ

Abstract

В данной работе мною была рассмотрена возможность модернизации электрической части ТЭЦ, опираясь на существующее ОРУ-110кВ. Отталкиваясь от необходимости увеличения генерирующих мощностей в связи с увеличением числа потребителей, был осуществлен выбор генераторного оборудования. Далее были подобраны соответствующие силовые трансформаторы, способные перераспределять электроэнергию от генераторов. На основании выбранного силового оборудования была составлена схема замещения электрической части для расчетов токов короткого замыкания. Оперируя полученными значениями токов короткого замыкания, был выполнен выбор коммутационного электрооборудования, токопроводящих шин. Также в работу включена часть исследования релейной защиты энергоблока, предполагающая разработку проекта предотвращения и защиты от аварийных и ненормальных режимов работы. Проанализированы основные нормативные документы и техническая литература по данной тематике. Для защиты блока был выбран терминал отечественного производителя НПП «ЭКРА». Был определен состав основных, а также резервных защит элементов. В соответствии с полученными ранее значениями токов короткого замыкания, а также учитывая другие условия, были рассчитаны уставки срабатывания устройств релейной защиты.

In this work, I considered the possibility of upgrading the electrical part of the TPP, relying on the existing 110 kV outdoor switchgear. Based on the needs of increasing generating capacities in connection with an increase in the number of consumers, a choice was made of generator equipment. Next, the corresponding power transformers were selected, capable of redistributing electricity from generators. Based on the selected power equipment, an electrical equivalent circuit was compiled for calculating short circuit currents. Using the obtained values of short-circuit currents, the choice was made of switching electrical equipment, conductive buses. The article also includes a part of the research of relay protection of the power unit, which involves the development of a project to prevent and protect against emergency and abnormal operating modes. The main regulatory documents and technical literature on this topic are analyzed. To protect the unit, the terminal of the domestic manufacturer NPP EKRA was chosen. The composition of the main as well as reserve protection elements was determined. In accordance with the previously obtained values of short-circuit currents, and also taking into account other conditions, the settings of the operation of relay protection devices were calculated.

Keywords

микропроцессор, relay protection, CHP, модернизация, релейная защита, terminal, блок генератор-трансформатор, короткое замыкание, unit generator-transformer, microprocessor, short closing, терминал, ТЭЦ, modernization

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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!
0
Average
Average
Average
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