DOI: https://doi.org/10.15407/publishing2017.48.038

CONTROLLED SWITCHING SF6 BREAKERS IN THE MAIN POWER ELECTRICAL GRIDS

V.V. Kuchanskyi
Institute of Electrodynamics of the National Academy of Sciences of Ukraine,
Peremohy, 56, Kyiv-57, 03680, Ukraine,
е-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

The results of research into the causes of accidents linear gas-insulated switches commutations in compensated 750 kV overhead lines. Recommendations for prevention accidents due to the ongoing unconnected pole of gas-insulated circuit breakers that do not pass through zero due to presence of a large aperiodic component are formulated. In the paper abnormal modes EHV transmission lines with varying degrees of compensation charging capacity are performed. Electromagnetic processes in compensated power lines, depending on the initial conditions at the time of switching are investigated. The points of abrupt change settings of transients while switching high voltage lines are identified. Measures for limiting the duration of the existence aperiodical component of current have been considered. References 5, figures 2, tables 3.
Key words: resonance over-voltage, short circuit, single-phase automatic reclosing, managed switching, aperiodic component of current.

1. Beliakov N.N., Kadomskaya K.P., Levinshtein M.L. and others. Processes during single-phase automatic reclosing of high voltage lines. Moskva: Energoatomizdat, 1991. 256 p. (Rus)
2. Current interruption in the high-voltage networks. Moskva: Energoizdat, 1981. (Rus)
3. Kuznetsov V., Tugay Yu., Kuchanskyy V. Investigation of transposition EHV transmission lines on abnormal overvoltages. Tekhnichna elektrodynamika. 2013. Vol. 6. Р. 51–56.
4. Naumkin I., Balabin M., Lavrushenko N., Naumkin R. Simulation of the 500 kV SF6 circuit breaker cutoff process during the unsuccessful three-phase autoreclosing. Proceedings of International Conference on power systems Transients, Kyoto, Japan, June 14-17, 2011. Р. 5–11.
5. Naumkin I. Crash when switching of gas insulated circuit breakers 500-1150 kV overhead line compensated. Electricity. 2012. Vol. 10. P. 22–32.