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Series connection electric arc fault detection system and method

A series arc and fault detection technology, which is applied in the direction of fault location, information technology support system, and fault detection according to conductor type, can solve the problems of low reliability of series arc fault detection, influence of operating conditions, and wired detection range, etc., to achieve Solve the difficulty of setting the threshold value, improve the reliability, and improve the effect of reliability

Active Publication Date: 2019-07-12
HEFEI UNIV OF TECH
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Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a series arc fault detection system and detection method, which are used to solve the problem of low reliability, limited detection range, and complexity in the detection of series arc faults in the prior art The influence of actual operating conditions in the environment and the technical problems of poor flexibility

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  • Series connection electric arc fault detection system and method
  • Series connection electric arc fault detection system and method
  • Series connection electric arc fault detection system and method

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Embodiment Construction

[0038] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0039] see Figure 1-3 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily d...

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Abstract

The invention provides a series connection electric arc fault detection system and method. The series connection electric arc fault detection system comprises a high-frequency electromagnetic isolation sampling circuit, a plurality of frequency selective networks at different frequency bands, a plurality of detecting circuits and a processor; the high-frequency electromagnetic isolation sampling circuit is used for obtaining conducted interference signals of a detected power transmission line, the frequency selective networks are used for conducting frequency selective amplification of the conducted interference signals, and by combining with the detecting circuits, amplitude-frequency characteristic parameters of the conducted interference signals are obtained, and the processor is used for judging whether series connection electric arc fault in the detected power transmission line occurs or not according to the acquired amplitude-frequency characteristic parameters of the conducted interference signals. The series connection electric arc fault detection system and method have the characteristics of low cost, high detection accuracy and the like.

Description

technical field [0001] The invention relates to the technical field of electrical fault detection, in particular to a series arc fault detection system and detection method. Background technique [0002] In transmission / distribution lines, arc faults caused by line aging, insulation damage, or loose conductor connections are a common failure phenomenon. In recent years, with the large-scale application of new energy photovoltaic power generation, especially the large-scale use of photovoltaic panels on building roofs and exterior walls, fire accidents in photovoltaic systems have occurred in many places. The investigation of such accidents found that the cause of most electrical fires pointed to arc faults. As a hot plasma, the arc can severely damage or ignite surrounding flammable materials causing a fire. In addition, an arc fault can also electrify the device, threatening the safety of the operator. [0003] According to the location of the fault point, the fault arc ...

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Application Information

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IPC IPC(8): G01R31/08G01R31/12
CPCG01R31/086G01R31/088G01R31/1272Y04S10/52
Inventor 苏建徽吴晶晶汪海宁张健赖纪东
Owner HEFEI UNIV OF TECH
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