High-speed mechanical switch multi-field coupling simulation calculation method and calculation device

Abstract

The invention provides a high-speed mechanical switch multi-field coupling simulation calculation method and its calculation device, wherein the method includes the following steps: performing electromagnetic field simulation analysis on the high-speed mechanical switch to determine the transient coil current and repulsion metal of the high-speed mechanical switch The electromagnetic repulsion of the disk; the thermoelectric coupling field simulation analysis of the high-speed mechanical switch according to the transient coil current to obtain the temperature rise curve of the coil; the coupling simulation analysis of the opening rebound motion field of the high-speed mechanical switch according to the electromagnetic repulsion to obtain the high-speed mechanical switch displacement curve. In the present invention, by performing electromagnetic field simulation analysis, thermoelectric coupling field simulation analysis and gate opening rebound motion field coupling simulation analysis on the high-speed mechanical switch, it can fully reflect the high-speed mechanical switch movement, contact collision and coil temperature rise, thereby fully and accurately reflecting the high-speed mechanical switch. The mechanical properties of mechanical switches provide theoretical guidance for the optimal design of fast mechanical switches for hybrid DC circuit breakers.

Description

technical field [0001] The invention relates to the technical field of circuit breaker simulation calculation, in particular to a high-speed mechanical switch multi-field coupling simulation calculation method and a calculation device thereof. Background technique [0002] High-speed mechanical switches are key components of hybrid DC circuit breakers, and their performance is mainly determined by their operating mechanisms. At present, electromagnetic repulsion mechanisms are mainly used, which generally have the disadvantages of short output time and small operating distance, so they are mostly used in medium and low voltage voltages. grade. For high-voltage high-speed mechanical switches, multiple high-speed mechanical switch units of medium and low voltage levels are generally used in series and synchronously operated structures at home and abroad. Therefore, the mechanical characteristics and stability of high-speed mechanical switches are particularly important. [0...

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Problems solved by technology

[0004] In view of this, the present invention proposes a high-speed mechanical switch multi-field coupling simulation calculation method and its calculation device, aiming to solve the problem that the current research on high-speed mechanical switches is mostly based on electromagnetic field single-field simulation design, which cannot fully and accurately reflect the mechanical performance The problem

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