Device for measuring direct-current resistance and parameters of load switch of transformer

Abstract

The invention discloses a device for measuring direct-current resistance and parameters of a load switch of a transformer. The device for measuring the direct-current resistance and the parameters of the load switch of the transformer comprises a central processing unit, a constant current source, a function switching circuit and a data collecting circuit, wherein the central processing unit is used for generating testing orders, the constant current source is connected with the central processing unit, and outputs constant current signals according to the orders generated by the central processing unit, the function switching circuit is connected with the central processing unit and the constant current source, receives the constant current signals output by the constant current source, and outputs testing signals according to the orders generated by the central processing unit, the data collecting circuit is connected with the function switching circuit, and carries out data collection according to the testing signals output by the function switching circuit, and the central processing unit is further connected with the data collecting circuit, receives data collected by the data collecting circuit, carries out processing on the received data, and outputs measurement results. The device for measuring the direct-current resistance and the parameters of the load switch of the transformer can simultaneously carry out a test of the direct-current resistance of the transformer and a test of the parameters of the load tapping switch of the transformer.

Description

technical field [0001] The invention relates to the technical field of electric power system, and more specifically, relates to a transformer direct resistance and on-load switch parameter measuring device. Background technique [0002] The DC resistance test of the transformer and the parameter test of the on-load tap changer of the transformer are mandatory items for transformer outage maintenance, and are of great significance in each transformer maintenance. [0003] In the existing test technology, if the above two tests are to be realized, the transformer user needs to configure a dedicated transformer DC resistance tester and a transformer on-load tap-changer parameter tester. Since there are many manufacturers of these two instruments, and there are various types , and each manufacturer’s test method, operation method and wiring method are different, so if the above two tests are to be carried out, two test preparations and two wiring and disconnection are required, ...

AI Technical Summary

Problems solved by technology

[0003] In the existing test technology, if the above two tests are to be realized, the transformer user needs to configure a dedicated transformer DC resistance tester and a transformer on-load tap-changer parameter tester. Since there are many manufacturers of these two instruments, and there are various types , and the testing method, operation method and wiring method of each manufacturer are different, so if the above two tests are to be carried out, two test preparations and two wiring and disconnection are required, which greatly reduces the work efficiency on site. Moreover, the single purchase cost of the above two instruments is relatively high

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