Open AccessSAFE OPENING OF SF6 CIRCUIT BREAKERS IN OVERHEAD TRANSMISSION LINES
Author(s) -
O.G. Shpolianskyi
Publication year - 2021
Publication title -
tehnìčna elektrodinamìka
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.22
H-Index - 13
eISSN - 2218-1903
pISSN - 1607-7970
DOI - 10.15407/techned2021.06.051
Subject(s) - circuit breaker , transient (computer programming) , overhead (engineering) , closing (real estate) , transmission line , electrical engineering , electric power transmission , line (geometry) , distribution board , transient recovery voltage , computer science , engineering , electronic engineering , voltage , mathematics , voltage source , geometry , law , political science , operating system , dropout voltage
The paper analyses the transient currents during the energisation of a 750 kV overhead transmission line (OTL). The safety of OTL state after symmetrical and asymmetrical closing of the circuit breakers and technical feasibility of SF6 circuit breakers opening with time delay after their closing is substantiated. The necessity of transient processes simulation for analysing the characteristics of periodic and direct components of currents is shown. A method for determining of SF6 circuit breaker opening time delay for a set of the states that may arise after the energisation of OTL is developed. References 13, tables 2, figures 5.