SAFE OPENING OF SF6 CIRCUIT BREAKERS IN OVERHEAD TRANSMISSION LINES
Open Access
- 21 October 2021
- journal article
- Published by National Academy of Sciences of Ukraine (Co. LTD Ukrinformnauka) (Publications) in Tekhnichna Elektrodynamika
- Vol. 2021 (6), 51-57
- https://doi.org/10.15407/techned2021.06.051
Abstract
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.Keywords
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