CONTROLLED SWITCHING SF6 BREAKERS IN THE MAIN POWER ELECTRICAL GRIDS
Article_7 PDF (Українська)

Keywords

resonance over-voltage
short circuit
single-phase automatic reclosing
managed switching
aperiodic component of current

How to Cite

Кучанський, В. . “CONTROLLED SWITCHING SF6 BREAKERS IN THE MAIN POWER ELECTRICAL GRIDS”. Proceedings of the Institute of Electrodynamics of the National Academy of Sciences of Ukraine, no. 48, Nov. 2017, p. 038, https://prc.ied.org.ua/index.php/proceedings/article/view/229.

Abstract

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.

Article_7 PDF (Українська)

References

Belyakov N.N., Kadomskaya K.P., Levinshtein M.L. et al. Processes at single-phase automatic re-activation of high voltage lines. M.: Energoatomizdat, 1991. 256 p.

Disconnection of currents in high-voltage networks. Ed. by C. Ragaller. M.: Energoizdat, 1981.

Kuznetsov V., Tugay Yu., Kuchanskyy V. Investigation of transposition EHV transmission lines on abnor-mal overvoltages . Tekhnichna Elektrodynamika. 2013. Vol. 6. Рp. 51–56.

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. Рp. 5–11.

Naumkin I. Crash when switching of gas insulated circuit breakers 500-1150 kV overhead line compen-sated. Electricity. 2012. Vol. 10. Pp. 22–32.

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Copyright (c) 2017 V.V. Kuchanskyi

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