Groundfault searching detector
A ground fault and detector technology, which is applied in the field of ground fault search detectors, can solve the problems of unmanned aerial vehicles and surrounding electromagnetic interference and noise interference, and inaccurate signal detection of signal detectors, so as to prevent electromagnetic interference and noise interference , the effect of improving accuracy
Pending Publication Date: 2021-04-06
GUIZHOU POWER GRID CO LTD
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[0010] Based on the above, the present invention provides a ground fault detection detector to solve the technical problem of inaccurate signal detection of the signal detector due to relatively large electromagnetic interference and noise interference in the UAV and its surroundings in the prior art
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[0034] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.
[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of descr...
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The invention discloses a ground fault searching detector. The detector comprises a signal generator and a signal detector. The signal detector comprises an annular shell, an induction coil which is accommodated in the annular shell, a first electromagnetic shielding layer which is coated outside the induction coil, and a signal processing unit which is electrically connected with the induction coil. In the working state, the signal generator injects a characteristic alternating current signal into a fault line, the signal detector moves along the overhead line of the power distribution network to cut and sense the characteristic alternating current signal, and sensing information is transmitted to the signal processing unit to be analyzed and processed. The technical problem of inaccurate signal detection of the signal detector caused by large electromagnetic interference and noise interference of the unmanned aerial vehicle and the surrounding environment in the prior art can be solved.
Description
technical field [0001] The invention relates to a ground fault finding detector, which belongs to the technical field of fault detection for overhead lines of distribution networks. Background technique [0002] In the actual operation of 10kV distribution lines, single-phase ground faults often occur, which seriously affects the safe and economical operation of substation equipment and distribution networks. There are many branches in the distribution line, and there are often multi-level branches, and a large number of distribution transformers are installed on the line. The fault indicator can effectively judge the short-circuit fault, but the accuracy of the judgment of the ground fault is not ideal, and the installation and post-maintenance costs are relatively high. high. [0003] In the actual operation of the low-voltage distribution network, single-phase ground faults mainly occur in the following situations: ①The conductor is broken and dropped; ②The conductor and...
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IPC IPC(8): G01R31/52
CPCG01R31/52
Inventor 杨忠李华鹏李巍杜建国补敏吴敌黄志清张彬冷贵峰方雪淞邵寅罗辉国良彬杜雪肖小兵郑友卓龙秋风姜辅国刘济铭
Owner GUIZHOU POWER GRID CO LTD