Experiment tester for spare power automatic switching apparatus

Abstract

The invention relates to an experimental tester with an automatic switching device, which comprises an adjustable single phase current output unit, an analog breaker unit, a three-phase alternate current and voltage output unit, an auxiliary relay, a central proceeding unit and a computer. The analog breaker unit comprises three independent analog breakers and operation power sources; each analog breaker circuit beaker is provided with corresponding tripping and switching instruction input port, a tripping and switching setting port and an output normally-closed contact port or normally-open contact port; normally-open contacts of two control switches and three analog breakers form voltage which is output; a common end of the central processing unit is connected with the operational power source; the output end of the central processing unit is respectively connected with the tripping and switching setting port of each analog breaker; a voltage control end of the central processing unit is respectively connected with the input ends of the two control switches and the auxiliary relay; and the central processing unit is connected with the computer, can generate various signals required by the experiment, and has the characteristics of simple structure, convenient operation and improvement on the working efficiency of the experiment.

Description

technical field [0001] The invention relates to a test instrument for a self-injection device, which belongs to the technical field of electric power system test and test. Background technique [0002] At present, the standby automatic switching device has been widely used in 110KV substations. However, the verification of the standby automatic switching device is more complicated. Since the 110KV substation will rarely shut down completely, usually only a part of the shutdown will be performed. Therefore, it is necessary to use a simulated circuit breaker instead of the actual operating switch in the standby switching verification. Before the calibration, the staff need to spend a lot of time on other operating protection screens to remove the tripping and closing and binary input circuit wiring of the standby automatic switching device and the operating switch. The test signal is output by the microcomputer protection test device. Current and voltage AC analog quantity, a...

AI Technical Summary

Problems solved by technology

Therefore, the equipment used in the test of the existing self-injection device is bulky, cumbersome, and costly. Due to the greater risk in safety during the disassembly process, the operation is cumbersome and the wiring is complicated.

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