Double-eddy-current driving type electromagnetic anti-bounce quick switch

Abstract

The invention discloses a double-eddy-current driving type electromagnetic anti-bounce quick switch, which comprises a vacuum arc extinguish chamber, a guide rod, a permanent magnetic force retaining mechanism, a closing bounce suppression mechanism, a double-eddy-current driving mechanism, a rack, a plurality of electronic switches, a plurality of bounce suppression capacitors and a plurality of energy storage capacitors, and is characterized in that the top of the guide rod is arranged in the vacuum arc extinguish chamber; the guide rod extends downwards to the permanent magnetic force retaining mechanism, the permanent magnetic force retaining mechanism comprises an upper closing magnet metal steel plate frame, a lower opening magnet metal steel plate frame and moving soft iron between the upper closing magnet metal steel plate frame and the lower opening magnet metal steel plate frame, and an upper closing magnet is embedded in the upper closing magnet metal steel plate frame; a lower opening magnet is embedded in the lower opening magnet metal steel plate frame; the electromagnetic anti-bounce execution mechanism based on double eddy current driving is adopted, higher opening and closing speed and better bounce suppression performance are achieved, the comprehensive performance of power protection switch equipment is greatly improved, and the equipment is compact in structure, high in reliability, high in stability and capable of adapting to various working conditions.

Description

technical field [0001] The invention relates to the technical field of high-voltage, high-current, and high-voltage switches, in particular to a double-eddy current driven fast switch with electromagnetic anti-bounce. Background technique [0002] With the development and progress of society, the power generation and electricity consumption around the world are increasing year by year, which puts forward higher requirements for the safety of power generation and power consumption equipment. In order to protect many sensitive equipment (generators, frequency converters, motors, etc.) such as generators and consumers, the power supply and distribution system is required to have rapid disconnection capability when a fault occurs. Existing traditional switches are difficult to meet the needs of the current power market. Therefore, in order to solve this major power problem, the double eddy current driven fast switch with electromagnetic anti-bounce came into being. [0003] Th...

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Problems solved by technology

[0003] The commonly used eddy current drive fast power switch mainly relies on a single eddy current disc to drive the movement of the mechanism. The disadvantage is that the initial speed of the movement mechanism is difficult to control. When the initial speed is low, the opening and closing speed will be slow, the breaking capacity will decrease, and the switch performance will be reduced; and When the initial speed of the moving mechanism is high, the vacuum circuit breaker will have a large bounce when closing, which will increase the electrical wear of the arc extinguishing chamber in the circuit breaker and reduce the service life of the circuit breaker

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