Method and device for diagnosing abnormality of current sampling loop

A diagnostic method and current sampling technology, which is applied in the direction of measuring devices, current only, and current/voltage measurement, can solve problems such as difficult exposure and discovery of loop hidden dangers, and hidden dangers of equipment with poor efficiency, so as to achieve high-efficiency automatic diagnosis and reduce manual labor. The effect of dominant pressure

Inactive Publication Date: 2020-12-01
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +3
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Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for diagnosing the abnormality of the current sampling loop, which is used to at least solve t...

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  • Method and device for diagnosing abnormality of current sampling loop
  • Method and device for diagnosing abnormality of current sampling loop
  • Method and device for diagnosing abnormality of current sampling loop

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Embodiment Construction

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0020] see figure 1 , which shows a flow chart of an embodiment of a method for diagnosing an abnormality of a current sampling loop of the present application. The method for diagnosing an abnormality of a current sampling loop in this embodiment can be applied to a terminal with a data processing function, such as a computer.

[0021] Such as ...

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Abstract

The invention discloses a method and a device for diagnosing abnormality of a current sampling loop. The method comprises the steps of: in response to a startup abnormality diagnosis operation, carrying out precise alignment on obtained dynamic record data based on adaptive discrimination of an abrupt change; in response to certain branch dynamic record data in the acquired dynamic record data, performing homologous detection on the certain branch dynamic record data; judging whether the certain branch dynamic record data is abnormal or not based on a homologous detection result; and if the certain branch dynamic record data is abnormal, performing difference detection on the dynamic record data containing the certain branch dynamic record data. By adopting the combination of homologous detection and differential flow detection, remote and accurate positioning of a current sampling abnormal loop can be achieved, the abnormality types cover abnormality conditions such as disconnection,shunting and two-point grounding, remote, real-time and high-efficiency automatic diagnosis can be realized, the manual leading pressure is reduced, the weak link of the system is sensed in time, andearly warning for potential safety problems is realized.

Description

technical field [0001] The invention belongs to the technical field of an abnormality diagnosis system of a current sampling circuit, and in particular relates to a method and a device for diagnosing an abnormality of a current sampling circuit. Background technique [0002] With the continuous expansion of the grid scale and the continuous advancement of the construction of unattended substations, especially when a power failure occurs in the power system, a large number of multi-source, heterogeneous, and decentralized heterogeneous data are delivered, and it is difficult for dedicated and monitoring personnel to rely on Experience and intuition judge the nature of the fault and take effective measures. The traditional data application intelligent analysis is not high and the bottleneck is prominent. When the power grid enters the new normal of high-quality development, the demand for intelligent application of big data is imminent, especially in the aspects of system link...

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Application Information

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Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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