A device for simulating the running state of handcart switchgear

Abstract

The present invention discloses a device for simulating the operation state of a handcart switch cabinet, comprising a base plate (1) with pulleys (2), wherein the two sides of the upper surface of the base plate are respectively provided with a column (3) and a transparent plate (4), the column (3) is sleeved with a slidable upper transverse slat (5) with an upper limiting device and a slidable lower transverse slat (6) with a lower limiting device (8) from top to bottom, and the outer side surfaces of the transverse slat (5) and the lower transverse slat (6) are respectively provided with an upper moving contact (9) and a lower moving contact (10). The handcart body (14) of a handcart switch platform is provided with rollers (15) on the bottom, adjustable struts (16) are connected between a guide rail (13) and the handcart body (14), one side of the upper surface of the guide rail (13) is provided with an aviation plug extension slot (17), the two side surfaces of the base plate (1)are slidable on the guide rail (13), and the column (3) and the transparent plate (4) are movable along with the base plate (1) in the left-right direction.

Description

technical field [0001] The invention relates to a device for simulating the running state of a handcart switch cabinet. Background technique [0002] At present, the 10kV central switchgear has been widely used in the power system due to its own advantages. However, there are still some shortcomings in the actual operation process. First of all, the full sealing of the switchgear makes it impossible to directly see the process of pushing the internal switch from the "test" position to the "operating" position, and this process is precisely the key process related to whether the switch can operate normally. , or the abnormal position of the moving contact will cause the switch contact to cause a heating fault due to poor contact, and this fault cannot be detected by conventional means such as infrared temperature measurement during operation due to the airtightness of the central cabinet. It will lead to the deformation of the cabinet track, valve and switch contacts. Second...

AI Technical Summary

Problems solved by technology

First of all, the full sealing of the switchgear makes it impossible to directly see the process of pushing the internal switch from the "test" position to the "operating" position, and this process is precisely the key process related to whether the switch can operate normally. , or the abnormal position of the moving contact will cause the switch contact to cause a heating fault due to poor contact, and this fault cannot be detected by conventional means such as infrared temperature measurement during operation due to the airtightness of the central cabinet. It will lead to the deformation of the cabinet track, valve and switch contacts. Secondly, the periodic switch cabinet maintenance is to pull the switch from the "test" position to the outside of the warehouse, and place it on the handcart equipped with the switch cabinet installation. Carry out maintenance and testing, and then push the handcart back to the "test" position after completion

During this process, conventional maintenance methods and methods cannot verify the relevant signals and contact state of the switch in the "running" position

The "running" position signal can only be confirmed when the handcart is pushed into the compartment and connected to the busbar during power transmission. This step is absolutely not allowed during normal maintenance. If there is a problem with the relevant internal contacts, which leads to the abnormality of the relevant circuit in the "running" position, the switch must be powered off for maintenance again, resulting in repeated power outages and affecting the reliability of the equipment

And because the existing maintenance tools are incomplete, once the chassis breaks down, it will take time and effort to deal with it.

The conventional method is to drop or hoist the switch of the handcart by manpower, which not only cannot guarantee the safety of the person and equipment, but also seriously affects the efficiency of emergency repairs

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