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Leakage detection device and system

A leakage detection and resistance technology, which is applied in the direction of measuring devices, measuring electricity, short-circuit testing, etc., can solve the problems that the instantaneous leakage current cannot be detected and located accurately and in time, the leakage of municipal electrical equipment, pedestrian electric shock and casualties, etc., to achieve Fast and accurate leakage fault detection and location, high work efficiency, and the effect of avoiding electric shock casualties of pedestrians

Active Publication Date: 2020-08-25
罗孚电气(厦门)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The short-term and instantaneous leakage current on the user end and branch lines, especially the branch lines, cannot be accurately and timely detected and located
This has led to the frequent occurrence of leakage of municipal electrical equipment and accidents of electric shock and casualties of pedestrians after heavy rains and urban waterlogging

Method used

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  • Leakage detection device and system
  • Leakage detection device and system

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Embodiment Construction

[0058] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0059] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0060] Next, a leakage detection system provided by an embodiment of the present invention will be described.

[0061] The leakage detection system according to the embodiment of the present invention is used for municipal electrical equipment, and can be divided into two parts: a master machine and a slave machine. The main functions include leakage current detection, data storage, interface operation, LCD display communication between master and slave, etc. When detecting and locating leakage faults, the master is...

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Abstract

An embodiment of the invention discloses an electric leakage detecting device and a system thereof, wherein the electric leakage detecting device comprises a signal acquisition part, a communication part and a power supply part. The signal acquisition part comprises a mutual inductor and an operational amplifier which are electrically connected. The mutual inductor is used for acquiring a detectedinduced electromotive force on the condition of residual current generation in a transmission cable. The operational amplifier is used for amplifying the induced electromotive force which is obtainedthrough acquisition. The communication part is used for transmitting the amplified induced electromotive force signal to a control microprocessor for performing electric leakage detection and early-warning. The power supply part is connected with the signal acquisition part and the communication part for supplying power to the signal acquisition part and the communication part. The device and thesystem can conveniently, quickly and accurately detect and position an electric leakage fault, thereby reducing or even preventing passenger electric shock casualty accidents caused by municipal power consumption equipment electric leakage in rainy days.

Description

technical field [0001] The invention relates to the technical field of municipal power grids, in particular to a leakage detection device and system. Background technique [0002] At present, most of the residual current protectors and power grid intelligent monitoring systems in operation in various places involve the main leakage protectors in the power distribution cabinets in the station area, and some of them are expanded to graded protection boxes. The user terminal and branch lines, especially the short-term and instantaneous leakage currents on the branch lines cannot be detected and located accurately and in time. This has led to current leakage of municipal electrical equipment and pedestrian electric shock casualties after heavy rains and urban waterlogging. Contents of the invention [0003] In view of this, the embodiment of the present invention provides a leakage detection device and system to realize convenient, fast and accurate detection and location of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/52G01R31/08
CPCG01R31/50
Inventor 刘宗健张振兵
Owner 罗孚电气(厦门)有限公司
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