E3S Web Conf.
Volume 124, 2019International Scientific and Technical Conference Smart Energy Systems 2019 (SES-2019)
|Number of page(s)||3|
|Section||Automation, Instruments and Control Methods|
|Published online||25 October 2019|
Specifics of automatic switches commutation testing
Chuvash State University named after I.N. Ulyanov, Cheboksary, Russia
2 Joint Stock Company “Cheboksary Electrical Apparatus Plant”, Cheboksary, Russia
3 Kazan State Power Engineering University, Kazan, Russia
4 Alatyr branch of Chuvash State University named after I.N. Ulyanov, Alatyr, Russia
5 Joint Stock Company “Plant “Electropribor””, Alatyr, Russia
6 Belarusian State Agrarian Technical University, Minsk, Belarus
* Corresponding author: firstname.lastname@example.org
We demonstrate that the most efficient way to extinguish the short-circuit arc is extinguishing inside the camera with an arc extinguishing grid, which splits it into several smaller arcs. The active resistivity of these partial arcs decreases the amplitude of the current of the short-circuit arc, decreases the angle φ between current and voltage, which decreases the amplitude of the return current and enhances the condition for the arc extinguishing. We analyze the process of arc extinguishing in the three-phase circuit. We would like to note that during the extinguishing of the arc in the first extinguishing pole resistance of electric arcs in two other poles deforms the voltage triangle decreasing the coefficients of the scheme from 1.5 to 1.3 according to the experimental data. This allows to decrease the difficulty of the tests for maximum commutation capability. Simultaneously, we consider the necessity of the selection and regulation of the wave parameters (amplitude coefficient and normal mode) of the test circuit according to the standard for test preparation. Taking into account the decrease of the coefficient of the scheme and the real wave parameters will allow to objectively estimate commutation capability and to optimize the parameters pf the contact arc extinguishing system of an automated switch.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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