Apparatus and method for testing the deterioration performance of contact finger springs of switchgear bus pile head
A switchgear and contact finger technology, which is applied in the field of device for testing the deterioration performance of the contact finger spring of the switchgear busbar pile head, can solve problems such as oxidation or loosening, burnt out equipment, and heat generation, and achieves high accuracy, simple structure, and comparative The effect of low failure
Active Publication Date: 2019-03-12
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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Problems solved by technology
[0004] 2. The connection between the switch and the power system (such as the busbar) is abnormal, such as oxidation or loosening of the contact part, which will cause the part to continue to heat under the action of the current, and eventually burn out the equipment
However, the operator found that when using this method, high-quality finger springs and inferior finger springs make the resistance between the moving contact and the static contact change little between the contact surfaces, and it is impossible to qualitatively judge the quality of the finger springs. Cause detection errors, which may cause greater harm in the later stage
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Embodiment 1
[0033] A device for testing the deterioration performance of the contact finger spring of the busbar pile head of the switchgear, its structure is as follows figure 1 As shown, it includes a box body 1, a data processor 4 arranged inside the box body 1, a mounting plate 2 fixed on the upper part of the box body 1, and a test contact fixed on the mounting plate 2 and matching the position of the moving contact 8 3. The middle part of the test contact 3 is provided with a pressure sensor 31 for the test finger to exert pressure on the test contact 3 , and the pressure sensor 31 is connected to the data processor 4 . A plurality of mounting holes 5 are evenly distributed on the mounting plate 2 , and the rear ends of the test contacts 3 are inserted into the mounting holes 5 . Such setting enables the test contact 3 to be easily installed and disassembled on the mounting plate 2. For different moving contacts 8, it is only necessary to insert the test contact 3 into different mou...
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The invention relates to a device and a method for testing deterioration performance of bus pile head contact finger springs of a switch cabinet. The switch cabinet comprises a plurality of moving contacts and static contacts, and the switching-on and switching-off of the switch cabinet are realized through contacting and disconnecting the moving contacts and the static contacts, the top end of each moving contact is provided with a contact finger, the moving contacts are connected with the static contacts through the contact fingers, and both ends of each contact finger is provided with a plurality of finger springs. The device comprises a box body, a data processor arranged inside the box body, an installation plate fixed to the upper part of the box body, and test contacts which are fixed on the installation plate and matched with the moving contacts in position, wherein the middle part of each test contact is provided with a pressure sensor used for testing magnitude of pressure applied to the test contact by the contact finger, and the pressure sensor is connected to the data processor. Compared with the prior art, the device and the method provided by the invention can greatly reduce occurrence of failure caused by detection errors, the device is convenient to disassemble, and the device is suitable for switch cabinets of different models.
Description
technical field [0001] The invention relates to the field of performance testing of switch cabinets, in particular to a device and method for testing the degradation performance of contact finger springs of busbar pile heads of switch cabinets. Background technique [0002] Switches are the most important control and protection equipment in the power system, maintaining the safe and stable operation of the power grid. There are two main reasons for power grid accidents caused by switch failures: [0003] 1. If the switch itself fails (such as aging of insulating parts, deformation or corrosion of parts, reduction of arc extinguishing ability, etc.), the corresponding measures mainly include: a. Strengthen the acceptance of new equipment, and strictly control the test data such as delivery and handover. b. Arrange daily inspections and power outage maintenance of equipment in a planned way. [0004] 2. The connection between the switch and the power system (such as the busb...
Claims
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IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 张星盛连军徐春峰李爱民瞿佳洁王素兰曹俊伟杜巍峰王俊陈佳骏孟琦斌吕佩佩施家炜
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO