Mistaken switching-on prevention method and control system of distribution network line automatic switch

By obtaining and analyzing the operating signals and fault operation signals of the distribution network circuit, determining the closing action type of the automated switch and identifying the wrong closing, the problem of the risk of mis-closing the contact switch is solved, and the power supply reliability and safety of the distribution network circuit is improved.

CN119695807APending Publication Date: 2025-03-25GUANGDONG POWER GRID CO LTD +1
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Patent Information

Application Number
CN202411883122.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-19
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

In the voltage-time self-healing function, the contact switch has a risk of incorrect closing, which leads to abnormally closing ring operation of the distribution network line, reducing power supply reliability and posing safety hazards.

Method used

By obtaining the operating signals and fault operation signals of the distribution network circuit, the closing operation type is judged, and when the self-healing gate is operated, it is determined whether it is an incorrect closing based on the reliability of the fault operation signal, and then the automatic switch is opened and a warning is issued.

Benefits of technology

It improves the accuracy of the automatic switch of distribution network line, enhances the power supply reliability of distribution network line, and avoids safety hazards caused by mistaken closing.

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Abstract

The invention discloses a mistaken switching-on prevention method of an automatic switch of a distribution network line and a control system of the distribution network line. The method comprises the following steps: acquiring an operation signal and a fault action signal of a distribution network line; determining a switching-on action type according to the operation signal, wherein the switching-on action type comprises a normal switching-on action and a self-healing switching-on action; and when the switching-on action is the self-healing switching-on action, determining whether the self-healing switching-on action of the automatic switch is false switching-on or not according to the fault action signal of the distribution network line. According to the technical scheme provided by the embodiment of the invention, whether the closing action of the automatic switch is the normal closing action or the self-healing closing action is judged through the operation signal of the distribution network line. When the automatic switch is a self-healing brake, judging whether the self-healing brake action of the automatic switch is false closing or not according to the reliability of the fault action signal; therefore, the accuracy and the power supply reliability of the automatic switch during self-closing are improved, and potential safety hazards caused by false closing of the automatic switch are avoided.
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