Intelligent leakage detection device based on low voltage distribution network

Abstract

The present invention discloses an intelligent leakage detection device based on a low-voltage distribution network. The device comprises: a voltage acquisition module for acquiring the live wire voltage of a post-meter leakage protector; a current acquisition module for acquiring the current of the live and neutral wires of the post-meter leakage protector; a host computer connected to the voltage and current acquisition modules for processing and transmitting the acquired voltage and current information; and an antenna connected to the host computer for connecting to the internet. The device can detect in real time whether there is voltage on the load side of each post-meter leakage protector, determining whether a power outage has occurred. It also detects whether there is leakage current on the live and neutral wires of each post-meter leakage protector's load side, facilitating repair personnel's determination of the fault location and the cause of the power outage, thereby avoiding losses caused by power outages and improving the efficiency of operations and maintenance.

Description

Technical Field

[0001] The present invention relates to the field of leakage detection, and in particular to an intelligent leakage detection device based on a low-voltage distribution network. Background Art

[0002] When a short circuit or leakage occurs in a resident's home, the leakage protector behind the meter will generally trip. However, in some cases, the leakage protector behind the meter refuses to operate and the main switch of the meter box trips, causing the entire meter box to have no power. After the emergency repair personnel of the power supply company arrive, they cannot determine which household's fault caused the main switch of the meter box to trip, so they have to temporarily power on the main switch of the meter box. After a period of time, the leaking household appliances or broken and leaking wires in the residents' homes may cause the main switch of the meter box to trip again. Frequent power outages without a clear cause will cause complaints from residents. Summary of the Invention

[0003] In response to the problem in the prior art that the cause of power outage cannot be determined after the meter box main switch trips, the present invention provides an intelligent leakage detection device based on a low-voltage distribution network. It detects in real time whether there is voltage on the load side of each leakage protector behind the meter to determine whether there is a power outage; and detects whether there is leakage current on the live wire and neutral wire on the load side of the leakage protector behind each meter, which facilitates emergency repair personnel to determine the fault location and the cause of the power outage.

[0004] The following are the technical solutions of the present invention.

[0005] The intelligent leakage detection device based on the low-voltage distribution network includes:

[0006] Voltage acquisition module, used to collect the live wire voltage of the leakage protector behind the meter;

[0007] Current acquisition module, used to collect the current of the live wire and neutral wire of the leakage protector behind the meter;

[0008] The host is connected to the voltage acquisition module and the current acquisition module, and is used to process and send the collected voltage and current information;

[0009] Antenna, connected to the host, used to connect to the Internet.

[0010] The present invention can detect in real time whether there is voltage on the load side of each leakage protector behind the meter and determine whether there is a power outage; it can detect whether there is leakage current on the live wire and the neutral wire on the load side of the leakage protector behind each meter, which is convenient for repair personnel to determine the fault location and the cause of the power outage, avoid losses caused by power outages, and improve the efficiency of operation and maintenance.

[0011] Preferably, the voltage acquisition module includes a acquisition head and a wire, the acquisition head is connected to the live wire nut of the leakage protector after the meter, and the wire connects the acquisition head and the host.

[0012] Preferably, the collection head includes an insulating cover and an adsorption contact. The adsorption contact is made of magnetic conductive metal and is attached to the live wire nut of the residual current device behind the meter. The insulating cover covers the surface of the adsorption contact except the adsorption surface. The wire passes through the insulating cover and connects to the adsorption contact. The magnetic conductive metal is generally made of magnetic steel, and the adsorption method can achieve power-free installation.

[0013] Preferably, the adsorption surface of the adsorption contact is provided with a cross pattern, and the cross pattern fits into the groove of the live wire nut of the leakage protector after the meter.

[0014] Preferably, the current acquisition module includes a current sensor and a wire. The current sensor is placed around the live and neutral wires of the residual current device behind the meter. The wire connects the current sensor to the host computer. Detection is performed using the principle of current mutual induction, so no power outage is required for installation.

[0015] Preferably, the host is further configured to record the leakage current and the time of occurrence of the leakage protector after the meter when the live wire voltage of the leakage protector after the meter returns to zero.

[0016] Preferably, the host is arranged in a meter box and is powered by connecting the A-phase live wire and the neutral wire.

[0017] The substantial effects of the present invention include: being installed in a meter box in a power-off-free manner, relevant data can be collected at the moment of a power outage, making it easier for repair personnel to diagnose faults, reducing power outage time and improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of an embodiment of the present invention;

[0019] Figure 2 is a top view of an embodiment of the present invention;

[0020] The figure includes: 1-voltage acquisition module, 2-current acquisition module, 3-host, 4-after-meter leakage protector. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] It should be understood that in various embodiments of the present invention, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0023] It should be understood that in the present invention, "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0024] The technical solution of the present invention is described in detail below with reference to specific embodiments. The embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0025] Example:

[0026] like Figure 1 and Figure 2 As shown in the figure, it is an intelligent leakage detection device based on the low-voltage distribution network, including:

[0027] The voltage acquisition module 1 is used to collect the live wire voltage of the leakage protector 4 after the meter;

[0028] Current acquisition module 2, used to collect the current of the live wire and neutral wire of the leakage protector behind the meter;

[0029] Host 3, connected to the voltage acquisition module and the current acquisition module, is used to process and send the collected voltage and current information; the host is set in the meter box and is powered by connecting the A phase live wire and the neutral wire;

[0030] Antenna, connected to the host, used to connect to the Internet.

[0031] The voltage acquisition module includes a collection head and a wire. The collection head is connected to the live wire nut of the leakage protector after the meter, and the wire is connected to the collection head and the host.

[0032] The collection head consists of an insulating cover and a suction contact. The suction contact is made of magnetic conductive metal and is attached to the live wire nut of the residual current device behind the meter. The insulating cover covers the entire surface of the suction contact except for the suction surface. The wire passes through the insulating cover and connects to the suction contact. The magnetic conductive metal is generally made of magnet steel, and the suction method allows for installation without power outages.

[0033] The adsorption surface of the adsorption contact is provided with a cross pattern, and the cross pattern fits into the groove of the live wire nut of the leakage protector behind the meter.

[0034] The current acquisition module in this embodiment includes a current sensor and wires. The current sensor is wrapped around the live and neutral wires of the leakage protector behind the meter. The wires connect the current sensor to the host computer. This module utilizes the principle of current mutual induction for detection, eliminating the need for power outages for installation.

[0035] In addition, when the live wire voltage of the leakage protector behind the meter returns to zero, the host records the leakage current and the time of occurrence of the leakage protector behind the meter.

[0036] This embodiment can detect in real time whether there is voltage on the load side of each leakage protector behind the meter, and determine whether there is a power outage; detect whether there is leakage current on the live wire and neutral wire on the load side of the leakage protector behind each meter, collect all leakage currents at the moment of power outage, and send them to the WeChat public account of the device owner. By comparison, the resident with the largest leakage current is the cause of the fault. By disconnecting the leakage protector behind his meter, the power supply of the meter box main switch can be restored.

[0037] This embodiment is installed in the meter box in a power-off-free manner, and can collect relevant data at the moment of power outage, making it easier for repair personnel to diagnose faults, reduce power outage time, and improve maintenance efficiency.

[0038] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the specific device can be divided into different functional modules to complete all or part of the functions described above.

[0039] In the embodiments provided in this application, it should be understood that the disclosed structures and methods can be implemented in other ways. For example, the embodiments of the structure described above are merely illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another structure, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, structure or unit, which can be electrical, mechanical or other forms.

[0040] Units described as separate components may or may not be physically separate, and components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0041] In addition, the functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware or software functional units.

[0042] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0043] The above content is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An intelligent leakage detection device based on a low-voltage distribution network, characterized in that: include: Voltage acquisition module, used to collect the live wire voltage of the leakage protector behind the meter; Current acquisition module, used to collect the current of the live wire and neutral wire of the leakage protector behind the meter; The host is connected to the voltage acquisition module and the current acquisition module and is used to process the collected voltage and current information; Antenna, connected to the host, used to connect to the Internet; The voltage acquisition module includes a collection head and a wire, the collection head is connected to the live wire nut of the leakage protector after the meter, and the wire is connected to the collection head and the host; The collection head includes an insulating cover and an adsorption contact. The adsorption contact is a magnetic conductive metal. The adsorption contact is adsorbed on the live wire nut of the leakage protector behind the meter. The insulating cover wraps the surface of the adsorption contact except the adsorption surface. The wire passes through the insulating cover and is connected to the adsorption contact. The adsorption surface of the adsorption contact is provided with a cross pattern, and the cross pattern fits into the groove of the live wire nut of the leakage protector after the meter.

2. The intelligent leakage detection device based on low-voltage distribution network according to claim 1 is characterized in that: The current acquisition module includes a current sensor and a wire. The current sensor surrounds the live wire and the neutral wire of the leakage protector behind the meter. The wire connects the current sensor and the host.

3. The intelligent leakage detection device based on low-voltage distribution network according to claim 1 is characterized in that: The host is also used to record the leakage current and occurrence time of the leakage protector after the meter when the live wire voltage of the leakage protector after the meter returns to zero.

4. The intelligent leakage detection device based on low-voltage distribution network according to claim 1 is characterized in that: The host is arranged in the meter box and is powered by connecting the A-phase live wire and the neutral wire.

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