Horizontal vacuum circuit breaker for high-voltage alternating current generator

Abstract

The invention relates to high-current switching equipment, in particular discloses a horizontal vacuum circuit breaker for a high-voltage alternating current generator, which comprises a steel frame and a three-phase horizontal make-and-break device fixed on the steel frame in parallel, wherein each phase of horizontal make-and-break device comprises a movable end support insulator, a static end support insulator, a movable end aluminum bracket and a static end aluminum bracket, wherein the movable end support insulator and the static end support insulator are fixed on the steel frame, the movable end aluminum bracket is fixed at the top of the movable end support insulator, the static end aluminum bracket is fixed at the top of the static end support insulator, and a vacuum arc extinguish chamber is arranged between the movable end aluminum bracket and the static end aluminum bracket; the vacuum arc extinguish chamber comprises a movable end and a static end; the static end of the vacuum arc extinguish chamber and the static end aluminum bracket are fixed and electrically connected; the movable end of the vacuum arc extinguish chamber comprises a movable rod, a movable contact, a sliding contact and a push rod, wherein the movable contact is arranged at the right end of the movable rod, the sliding contact is arranged at the left end of the movable rod, and the push rod is fixed at the left end of the sliding contact; the cross section of the movable end aluminum bracket is in a hollow rectangular shape, and the push rod and the sliding contact extend into the movable end aluminum bracket; and a spring contact is arranged at the right end of the movable end aluminum bracket and is in electrical contact with the sliding contact.

Description

technical field [0001] The invention relates to a large-current switchgear, in particular to a horizontal vacuum circuit breaker for a high-voltage alternator. Background technique [0002] Generally, the circuit breaker for high-voltage alternator is installed between the generator and the step-up transformer, or between the generator and the electricity used by the power plant, with a rated working voltage of 12kV-36kV and a rated current of several thousand amperes to several million amps. At present, the circuit breakers for high-voltage AC vacuum generators are all vertical structures, and their lead wires adopt vertical lead wires. However, the height of the transmission bus in power plants is relatively low. Therefore, the circuit breakers for high-voltage AC generators adopt vertical structures. The power distribution room and distribution space of the power plant are large; in addition, the moving end of the circuit breaker is connected by a flexible wire, the rate...

AI Technical Summary

Problems solved by technology

At present, the circuit breakers for high-voltage AC vacuum generators are all vertical structures, and their lead wires adopt vertical lead wires. However, the height of the transmission bus in power plants is relatively low. Therefore, the circuit breakers for high-voltage AC generators adopt vertical structures. The distribution room and the distribution room of the power plant have a large space; in addition, the moving end of the circuit breaker is connected by a flexible wire, the rated current of the generator is large, and the fault current is larger.

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