Failure current simulator and working method thereof

Abstract

The invention provides a failure current simulator, which comprises a current generator, a first controllable switch, a second controllable switch, a test coil, a sliding rheostat, a controller, and an electronic counter which is electrically connected with the controller, wherein the first controllable switch and the sliding rheostat are connected in series to form a first branch circuit; the second controllable switch and the test coil are connected in series to form a second branch circuit; the first branch circuit and the second branch circuit are respectively connected in parallel with the current generator; and the controller is used for cyclically controlling the turn-on and turn-off of the first controllable switch and the second controllable switch, and controlling the electronic counter to count for another time after control in a cycle is finished. The whole failure current simulator consists of the conventional electronic components, is low in cost and easy to operate, facilitates control over the failure simulation test frequency of a test product, and facilitates comprehensive test of the required test product.

Description

technical field [0001] The invention belongs to the field of simulation, in particular to a fault current simulator and a working method thereof. Background technique [0002] In the development process of many products, product testing is the last barrier to ensure whether the product meets the regulations. Through relevant testing methods, it can be known whether the developed product is qualified. In the development of some power products, the detection step is even more indispensable. It is necessary to confirm that the performance parameters of the power product are qualified through testing before it can be installed in the power system for work. If the unqualified power product If it is used in the power system, it will lead to a power outage, and it will cause a major power accident or even a casualty accident. [0003] At present, many power products developed by power companies are installed in the power system to monitor current fault conditions in the power syst...

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of troublesome operation, long test time, and inability to display the number of tests in the prior art for fault current simulation testing of power products, and provides a fault current simulator, which can easily realize fault current simulation and is easy to operate , and the whole test process can record the test times of the fault current

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