Fault detection system of power distribution network
A fault detection and distribution network technology, applied in fault location, signal transmission system, information technology support system, etc., can solve problems such as failure points that cannot accurately locate distribution network faults
Inactive Publication Date: 2020-07-28
STATE GRID BEIJING ELECTRIC POWER +1
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[0005] The embodiment of the present application provides a fault detection system for distribution network to at least solve the technical problem that the existing fault detection system for distribution network cannot accurately locate the fault point where the fault occurs in the distribution network
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[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0022] It should be noted that the terms "first" and "second" in the specification and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such ...
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The invention discloses a fault detection system of a power distribution network. The method comprises the steps that a data monitoring device is arranged in a power distribution network and used fordetecting a current in the power distribution network in real time; an information storage device is connected with the data monitoring device and used for generating a high-frequency signal and injecting the high-frequency signal into the power distribution network under the conditions that the current in the power distribution network rises to a preset threshold value and the duration reaches apreset duration; a fault detection device is arranged in the power distribution network and used for determining that the power distribution network breaks down and sending the current containing thehigh-frequency signal to the positioning device under the condition that it is detected that the current in the power distribution network contains the high-frequency signal; and a positioning deviceis used for processing the current containing the high-frequency signal, determining the position information of the faulted power distribution network and sending the position information to the monitoring center. The technical problem that an existing power distribution network fault detection system cannot accurately locate the fault point of the power distribution network is solved.
Description
technical field [0001] The present application relates to the field of distribution network fault detection, in particular, to a distribution network fault detection system. Background technique [0002] During the operation of electromechanical equipment, common faults are likely to occur in poor contact between the busbar and the line connections of other equipment, which makes the line operation interrupted. Secondly, a fault in a certain section of a circuit in the operation of electrical equipment disconnects the line, blocks the current in the circuit, and causes abnormalities in the relevant components of the electromechanical equipment. No matter what kind of line problem will have a certain impact on the entire electromechanical working system. In addition, long-term operation will also cause the equipment to overheat and cause operational obstacles, resulting in the paralysis of the entire system. Equipment failure due to heat is mainly caused by excessive voltag...
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IPC IPC(8): G01R31/00G01R31/50G01R31/08G08C17/02
CPCG01R31/00G01R31/086G08C17/02Y04S10/52
Inventor 张建玺李明春丁建武杨志东陈京齐清于宏海徐剑代贵生关涛陈广久盛萌栾逢时张皓康晓婧王均艳谢萌杨迪刘金鑫许方晨徐航
Owner STATE GRID BEIJING ELECTRIC POWER