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A self-test method and feedback circuit for an intelligent terminal to open a loop

A technology of intelligent terminals and feedback circuits, applied in electrical testing/monitoring, instruments, testing/monitoring control systems, etc., can solve problems such as inability to execute issuing commands, and achieve the effect of convenient and simple algorithms

Active Publication Date: 2018-11-09
XUJI GRP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a self-checking method and a feedback circuit for an intelligent terminal to open a circuit, which is used to solve the problem in the prior art that the command cannot be executed during the self-check of the open circuit

Method used

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  • A self-test method and feedback circuit for an intelligent terminal to open a loop
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  • A self-test method and feedback circuit for an intelligent terminal to open a loop

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Embodiment Construction

[0029] The invention provides a self-inspection method and a feedback circuit of an intelligent terminal opening and closing loop, and self-inspecting the opening and exiting loop of the intelligent terminal when the self-inspection condition is met. During self-inspection, drive the outlet every time T0, and judge whether there is any abnormality in the output circuit according to the feedback signal of the output circuit.

[0030] The structural diagram of the self-checking system for opening and closing the loop of the intelligent terminal provided by the present invention is as follows: figure 1 As shown, the CPU is connected to the programmable chip through communication, and the programmable chip is controlled and connected to M (M>0) output loops; each output loop is also connected to the programmable chip through the output feedback circuit.

[0031] As another implementation manner, the programmable chip can be integrated on the CPU, and the CPU is directly connected ...

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Abstract

The invention relates to an intelligent-terminal on-off-output-loop self-testing method and feedback circuit. When the self-testing condition is met, on-off output loops of an intelligent terminal are self tested through the intelligent-terminal on-off-output-loop self-testing method and feedback circuit. When self-testing is carried out, outlets are driven at T0 intervals, feedback signals of the on-off output loops are obtained after time T1 is waited, and then whether the on-off output loops are abnormal or not is judged according to the feedback signals. As the intelligent-terminal on-off-output-loop self-testing method and feedback circuit drive the outlets, and the waiting time T1 fed back by the on-off output loops is far smaller than the action time of a relay, the faulty action of the relay can not be caused by the self-testing method.

Description

technical field [0001] The invention relates to the technical field of substation automation, in particular to a self-checking method and a feedback circuit for an intelligent terminal to open a loop. Background technique [0002] The smart terminal is an important device in the smart substation. It has the functions of receiving instructions based on the GOOSE service through the process layer network, publishing and collecting information, and driving actuators to achieve export control. [0003] The intelligent terminal mainly realizes the control of the circuit breaker, isolation switch, grounding switch and fast grounding switch in the interval by sending an exit command (that is, an output command) to the switch value output circuit (hereinafter referred to as the output circuit). Whether the smart terminal can correctly control these switch devices in the interval by opening out the loop is related to whether the smart substation can realize fault removal and dispatch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCG05B23/0213
Inventor 朱建斌郑拓夫杨智德赵应兵牟涛孔红丽胡彦民王宏杰闫志辉李刚陈号
Owner XUJI GRP