Сибирский федеральный университет

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: Гидроэлектростанции в XXI веке; Саяногорск-Черемушки; Саяногорск-Черемушки

Год издания: 2019

Ключевые слова: circuitry, the network of 6 kV, the calculation of short-circuit currents, newsorange cables, selection of current limiting reactors, neutral-point, its own needs, relay protection, Чебоксарская ГЭС, собственные нужды

Аннотация: The report presents the results of studies of the scheme of power supply of own needs of AC 6 kV (SN-6) Cheboksary HPP. The main goal is to increase the reliability of the SN-6 system both in normal modes (during operational switching, repair work) and in emergency modes. For the power supply network of own needs calculations of the specified values of currents of threephase short circuits on tires of all three KRU-6 kV in the normal state of RPN, and also in extreme positions are executed. The final results of the calculation of short-circuit currents are presented in tabular form. The obtained values of short-circuit currents are used to check the conditions of thermal resistance of the operated cables and check them for the condition of nonignition. The introduction of current limiting reactors into the SN-6 scheme is proposed. The results of the analysis of earth faults (including arc) in the scheme SN-6 kV and made an assessment of their danger. Detailed questions of definition of an optimum kind of grounding of a neutral network SN-6 kV.

Журнал: Гидроэлектростанции в XXI веке

Номера страниц: 64-69

Издатель: Саяно-Шушенский филиал Сибирского федерального университета

• Подтяжкин В.С. (Сибирский федеральный университет)
• Кочетков Максим Владимирович (Сибирский федеральный университет)

• РИНЦ (eLIBRARY.RU)