Grounding switch contact and direct movement plug-in type grounding switch with grounding switch contact

Abstract

The invention provides a grounding switch contact and a direct movement plug-in type grounding switch with the grounding switch contact. The grounding switch contact comprises a fixed end contact electrode and a movable end contact electrode, and further comprises a magnetic control device, the magnetic control device comprises a plurality of first switching grooves and a second switching grooves; each first switching groove comprises a first transverse groove and a first extending groove, the first transverse grooves extend in the circumferential direction of the fixed end contact electrode, the first end of each first extending groove is connected to one end of the corresponding first transverse groove, and the second end of each first extending groove extends to the movable end contact electrode; each second switching groove comprises a second transverse groove and a second extending groove, the second transverse grooves extend in the circumferential direction of the movable end contact electrode, the first end of each second extending groove is connected to one end of the corresponding second transverse groove, and the second end of each second extending groove extends to the fixed end contact electrode. By means of the technical scheme, the problem that large-current opening and closing cannot be achieved through a direction movement plug-in type grounding switch in the prior art easily can be effectively solved.

Description

technical field

[0001] The invention relates to the field of high-voltage switchgear equipment, in particular to a grounding switch contact and a direct-acting plug-in grounding switch having the same. Background technique

[0002] In the power system, the earthing switch has the requirement of short-circuit making. When the grounding switch is closed, due to the phenomenon of "pre-voltage short-circuit fault" in the system, it is required that the closing process of the grounding switch can withstand the closing short-circuit load. According to the standard GB1985-2004, the E1 level earthing switch with short-circuit current making capability shall withstand two short-circuit making operations regardless of the voltage level. For E2 level earthing switches with short-circuit making current capability with a rated voltage of 40.5kV and below, the number of short-circuit making operations is increased to 5 times.

[0003] The direct-operated plug-in grounding switch in the ...

Examples

Embodiment Construction

[0025] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] In the existing technology, the contact design of the traditional direct-acting plug-in grounding switch still lacks the consideration of the influence of the magnetic field of the electrode contact gap on the pre-breakdown arc, and the magnetic blowing effect of the magnetic field has not been successfully applied to the grounding switch. In terms of closing operation, it is still difficult for the grounding switch to successfully close the short-circuit current.

[0027] The inventor of the present application applied the magnetic blowing effect of the magnetic field on the arc to the in-line grounding switch for the first time. Through the horizontal magnetic blow effect or longitudi...

technical field

[0001] The invention relates to the field of high-voltage switchgear equipment, in particular to a grounding switch contact and a direct-acting plug-in grounding switch having the same. Background technique

[0002] In the power system, the earthing switch has the requirement of short-circuit making. When the grounding switch is closed, due to the phenomenon of "pre-voltage short-circuit fault" in the system, it is required that the closing process of the grounding switch can withstand the closing short-circuit load. According to the standard GB1985-2004, the E1 level earthing switch with short-circuit current making capability shall withstand two short-circuit making operations regardless of the voltage level. For E2 level earthing switches with short-circuit making current capability with a rated voltage of 40.5kV and below, the number of short-circuit making operations is increased to 5 times.

[0003] The direct-operated plug-in grounding switch in the ...

Examples

Embodiment Construction

[0025] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] In the existing technology, the contact design of the traditional direct-acting plug-in grounding switch still lacks the consideration of the influence of the magnetic field of the electrode contact gap on the pre-breakdown arc, and the magnetic blowing effect of the magnetic field has not been successfully applied to the grounding switch. In terms of closing operation, it is still difficult for the grounding switch to successfully close the short-circuit current.

[0027] The inventor of the present application applied the magnetic blowing effect of the magnetic field on the arc to the in-line grounding switch for the first time. Through the horizontal magnetic blow effect or longitudi...

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