Open AccessThe question of specific features of overvoltages when switching parallel-connected vacuum breakers
Author(s) -
Rodion A. Belsky,
Vladimir Skornyakov,
Irina Savelieva
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/643/1/012061
Subject(s) - overvoltage , circuit breaker , electrical engineering , sulfur hexafluoride circuit breaker , voltage , engineering , short circuit , arc fault circuit interrupter
The paper presents the results of analyzing switching overvoltages occurring with simultaneous shedding of active inductive load by vacuum breakers jointly connected to one bus. It is established that with the available spread in current choppings of vacuum breakers, the maximum overvoltage occurs on the contacts of a vacuum breaker out of the number of parallel connected ones, in which the gap is de-ionized last. It is recommended to damp any occurring overvoltages by arresters located in parallel to separate groups of breakers connected to one bus.