Detecting and positioning device of arc fault of switch apparatus

A switchgear and arc fault technology, which is applied in the field of switchgear arc fault detection and positioning devices, can solve the problems that the fault arc detection method cannot accurately determine the time when the fault arc occurs and locate the location of the fault arc, so as to reduce damage and misjudgment Harm to the power system, improve life and work reliability, and improve the effect of safety and reliability

Inactive Publication Date: 2010-12-01
XI AN JIAOTONG UNIV +1
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  • Description
  • Claims
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Problems solved by technology

[0008] In view of the defects or deficiencies in the above-mentioned prior art, in order to solve the problem that a single fault arc detection method (arc detection method, current detection method) cannot accurately determine the fault arc generation time and locate the fault arc occurrence position, the purpose of the present invention is to Provided is a switchgear arc fault detection and positioning device, which can accurately determine the time when the fault arc occurs in the switchgear and locate the location where the fault arc occurs, greatly improve the reliability of the switchgear arc fault detection, and further improve the working current of the switchgear. Life and working reliability provide safe and reliable guarantee for the stable operation of the power system

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  • Detecting and positioning device of arc fault of switch apparatus
  • Detecting and positioning device of arc fault of switch apparatus
  • Detecting and positioning device of arc fault of switch apparatus

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Embodiment Construction

[0043] The arc fault detection and positioning device for switchgear of the present invention will be further described in detail below in conjunction with the accompanying drawings and the embodiments given by the inventor.

[0044] Such as figure 1 As shown, this is the schematic diagram of the switchgear arc fault detection and location device. It consists of three parts: fault current detection module, fault arc acquisition module and arc monitoring and intelligent processing module. (1) The fault current detection module completes the collection and identification of the fault current, providing a basis for the action of the switchgear. The current transformer detects the current on the incoming line of each phase of the switchgear, and dynamically outputs the detected current signal in real time; the signal output from the current transformer is in the form of AC, which generally has a very high root mean square The voltage unit rectifies the current signal output by t...

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Abstract

The invention discloses a detecting and positioning device of arc fault of a switch apparatus, relating to the detecting and positioning field of arc fault of switch apparatus. The detecting and positioning device of arc fault of switch apparatus comprises a fault current detection module for detecting the current at the line feeding side of the switch apparatus and outputting the arc fault signal of the switch apparatus; a faulty arc acquisition module for collecting the arc light signal of the switch apparatus, and storing and outputting the image signal of the faulty arc in real time; an arc monitoring and intelligent processing module for displaying the faulty arc image, reversely positioning the arc generation position according to the faulty arc image and outputting the protection signal of the switch apparatus.

Description

technical field [0001] The invention relates to the field of arc fault detection and positioning of switchgear, in particular to a device for detecting and locating arc faults of switchgear. Background technique [0002] Switchgear is the key equipment in the operation of the power system, and it plays a role in control and protection in the power system. Its safety and reliability are related to the normal operation of the entire power system. The arc is a group of nearly cylindrical gas that is extremely hot, emits strong light, and can conduct electricity in the gap between the moving and static contacts when the contact breaks the current. It is a form of gas discharge, which makes the gas in the arc gap change from an insulating state to a conductive state, allowing the current to pass through. The internal arc fault of the switchgear is a frequent and catastrophic serious fault. The occurrence of the fault arc will radiate huge sound, light, electricity, heat and oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/32G01R31/327
Inventor 王小华郑宁白凡刘峰涛荣命哲卢雍陈志伟
Owner XI AN JIAOTONG UNIV
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