Test device for conducting interval withstand voltage test on GIS (gas insulated switchgear)

Abstract

The invention discloses a test device for conducting the interval withstand voltage test on a GIS (gas insulated switchgear). The test device comprises a closed shell, a wire outgoing sleeve, a firstconductive rod, a movable end rotating device, a movable end supporting device and a basin type insulator. The movable end supporting device is arranged at the right end of the closed shell. The basintype insulator is arranged at the left end of the closed shell. The wire outgoing sleeve is arranged on the outer side of the upper end of the closed shell. The first conductive rod is arranged in the wire outgoing sleeve. The first conductive rod extends into the closed shell and is electrically connected with a steering supporting device. The movable end rotating device comprises a supporting rotating shaft, an insulated pull rod, a conductive rotating shaft, a rotating seat, a rotating disc, a moving contact conductive rod and grounding contact devices. One moving contact conductive rod and two grounding contact devices are arranged on the rotating disc at equal intervals, wherein the one moving contact conductive rod and the two grounding contact devices are positioned corresponding to three metal accessories of the basin type insulator. Each grounding contact device comprises an insulated pull rod, a grounding contact, a grounding moving contact and a grounding static contact. According to the invention, the test efficiency of the withstand voltage test is improved. The misoperation is avoided, and the safety is improved.

Description

technical field [0001] The invention relates to a test device used for GIS interval withstand voltage test. Background technique [0002] Gas-insulated metal-enclosed switchgear (GIS, GAS insulated SWITCHGEAR) is a gas-insulated fully-enclosed combined electrical appliance, which is composed of a circuit breaker, a disconnector, a grounding switch, a transformer, a lightning arrester, a bus bar, connectors and outlet terminals, etc. These devices or components All of them are enclosed in a metal grounded shell, and the interior is filled with a certain pressure of SF6 insulating gas, so it is also called SF6 fully enclosed combination appliance. GIS is not only widely used in the field of high voltage and ultra-high voltage, but also in the field of ultra-high voltage. Compared with conventional open substations, GIS has the advantages of compact structure, small footprint, high reliability, flexible configuration, and convenient installation. , strong security, strong envi...

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Problems solved by technology

It can be seen that in order to keep the two phases grounded during the test, the auxiliary device used for the withstand voltage test requires two steps for each item of the test. Conduction, and then turn the rotating screw of the propulsion device to separate one of the grounding devices from the grounding, so the test operation is not fast and convenient. The more operations, the easier it is to cause misoperation. In order to ensure that one phase is conductive, the other two phases are grounded. , it is necessary to detect the connection in the airtight housing every time it is switched

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