Сибирский федеральный университет

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

Конференция: ГИДРОЭЛЕКТРОСТАНЦИИ В XXI ВЕКЕ; Саяногорск, Черемушки; Саяногорск, Черемушки

Год издания: 2017

Ключевые слова: токовая направленная защита, однофазное замыкание на землю

Аннотация: Single-phase to ground fault is the most common type of damage in three-phase electrical networks of all voltage classes.? In electric networks 6-35 kV working, usually with isolated or compensated neutral, the currents of single-phase ground fault (SGF) are small, they do not exceed 20-30 A. Therefore, for oz it is difficult to create selective protection with sufficient sensitivity. There are several types of selective protection from Ozzie, the most common current directional protection of zero sequence. A compulsory condition of implementation of this protection are: the relatively large capacitive current of the network and its branching. This calculation is made for the MV grid, hydropower plant, which is branched with a large number of KL and geographically separated by the territory of HPP. In order to determine the type of protection and its set point it is necessary to calculate the current circuit in the system SN.?

Журнал: ГИДРОЭЛЕКТРОСТАНЦИИ В XXI ВЕКЕ

Номера страниц: 143-148

Издатель: Саяно-Шушенский филиал Сибирского федерального университета

• Антонов А.Д. (Сибирский федеральный университет)

• РИНЦ (eLIBRARY.RU)