Multi-channel remote signal test device for ring network cabinet and test method thereof

Abstract

The invention provides a multi-channel remote signal test device for a ring network cabinet and a test method thereof, and relates to the technical field of remote control signal test. The multi-channel remote signal test device for the ring network cabinet comprises an analog switch module A, an analog switch module 101, an analog switch module 102 and an analog switch module B. The multi-channel remote signal test method for the ring network cabinet comprises the steps of firstly, accessing a tester to the remote control loop of a ring network cabinet DTU; secondly, testing an initial state; thirdly, testing the state; fourthly, capturing and self-maintaining multi-channel remote signals; fifthly, recording a test result and checking the result. According to the invention, the device realizes the multi-channel test and four intervals can be continuously operated. Repeated confirming links are eliminated. Meanwhile, when one part inside the ring network cabinet or the switching-on outlet of the ring network cabinet is in wrong connection, the wrong connection can be directly reflected by the device. Therefore, the field test personnel can check and repair the wrong connection conveniently. Meanwhile, the wiring number is reduced through the standardized primary wiring operation by the device, so that the influence of human factors is reduced to the lowest.

Description

[0001] 1. Technical field [0002] The invention relates to the technical field of remote control testing of a ring network cabinet, in particular to a method for testing multi-channel remote control signals of a ring network cabinet. [0003] 2. Background technology [0004] The ring main unit is not only an important part of the urban distribution network, but also the carrier of intelligent terminals, it is also the basis of distribution automation, and it belongs to the automation station end just like the substation. In order to ensure the remote control of the ring network cabinet by the control center and the smooth realization of the DA function of the power distribution automation, it is necessary to conduct remote control tests on the ring network cabinet regularly; [0005] With the continuous development of urban power grids, it has become a general trend for overhead cables to be grounded and double-ring network transformation, and the number of ring main units is...

AI Technical Summary

Problems solved by technology

Correspondingly, the number of RMU remote control testers cannot be increased, and the test time that can be invested has reached the upper limit, which cannot meet the current and future test needs

At the same time, the original test method uses a hand-held multimeter to capture the remote control signal level at the pressure plate of the DTU switch outlet of the ring network cabinet. However, the existence time of the remote control signal is only 0.7s. It is difficult for testers to capture and the test accuracy is not high.

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