Topical matter of power supply for today is effective increase in the reliability of power supply in medium voltage overhead power systems by sectioning of lines with switching devices, such as disconnectors, controlled disconnectors or sectioning points. In such schemes, the manual approach to emergency management is used. This kind of schemes can be used where the overhead power lines are. Protective device on the outgoing feeder is switched off as soon as damage occurs in any area. As a result, all consumers of the line lose power for a long time. Remotely operated disconnectors or remote controlled sectioning points can also be installed instead of manual line disconnectors. This process of damage localization differs only in that all switching operations are performed remotely. Decision on switching is made by the dispatcher, constant communication with each controlled element of the network is necessary, otherwise it becomes virtually uncontrollable and the entire effect of remote control of disconnectors is eliminated.
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W artykule przedstawiono wybrane zagadnienia dotyczące modelowania cyfrowego z zastosowaniem metody elementów skończonych i programu komputerowego ANSYS zjawisk występujących w przestrzeni międzystykowej komory gaszeniowej łącznika próżniowego podczas wymuszonego impulsem przeciwprądu gaszenia luku próżniowego.
EN
The paper presents chosen problems of digital modelling of phenomena which occur in the inter-electrode gap of vacuum switches chamber during the forced counter-current commutation. In the presented modelling a finite element method and ANSYS software were used.
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