gis knife switch contact opening and closing condition monitoring system

A monitoring system, opening and closing technology, applied in the direction of electrical components, electrical switches, circuits, etc., can solve the problem that the switching cannot keep up with the state transition of the knife switch contact, the opening and closing situation does not match the actual situation, and the knife switch contact There are no problems such as splitting and closing in place

CN105405693BActive Publication Date: 2017-12-22QINGYUAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-12-22

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Abstract

The invention relates to a GIS breaker contact opening and closing condition monitoring system. A closing switch and an opening switch are respectively arranged at the two sides of a connecting lever which is nearest to each breaker contact, the closing control part of a closing breaking device is in serial connection with the closing switch to control the breaking of a first closing normally open contact and a closing normally close contact, so that the operation of a closing indication device serially connected with the first closing normally open contact can be controlled, the opening control part of an opening breaking device is in serial connection with the opening switch to control the breaking of a first opening normally open contact and an opening normally close contact, so that the operation of an opening indication device serially connected with the first opening normally open contact can be controlled, and the closing control part and the opening control part control the operation of an open-phase indicating device in serial connection with the closing normally close contact and the opening normally close contact simultaneously. The GIS breaker contact opening and closing condition monitoring system can accurately reflect the opening and closing conditions of a breaker contact and improves the monitoring accuracy of the breaker contact positions.
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Description

technical field

[0001] The invention relates to the technical field of electrical equipment, in particular to a GIS knife switch contact opening and closing condition monitoring system. Background technique

[0002] GIS (Gas Insulated Switchgear) is a metal-enclosed switchgear that uses gas in whole or in part instead of air under atmospheric pressure as the insulating medium. Corresponding to the three-phase line, each phase is equipped with a knife switch, and the knife switch contacts are completely sealed in the box, so the staff cannot judge the opening and closing of the knife switch contacts from the outside.

[0003] In order to know the opening and closing status of the knife switch contact, the traditional technical means is to install an auxiliary switch inside the mechanism box, connect the knife switch and the auxiliary switch through the transmission mechanism, and use the switching of the auxiliary switch to represent the position of the knife switch contact. ...

Examples

Embodiment Construction

[0013] refer to Figure 1 to Figure 3 , the GIS knife switch contact opening and closing situation monitoring system in an embodiment of the present invention includes a close position switch K1, a position switch K3, a close position breaking device, a position breaking device, a close position indicating device HL1, a point position switch Position indicating device HL2 and non-full-phase indicating device HL4, the close position breaking device includes a close position control part M1, the first close position normally open contact M11 and close position normally closed contact M12, and the position breaking device includes a position control part M3 , The first digit normally open contact M31 and the digit normally closed contact M32.

[0014] GIS is equipped with a knife switch contact corresponding to each phase line. In the present invention, refer to figure 1 , the closing switch K1, the dividing switch K3, the closing breaking device and the dividing breaking devic...