A multi-path power distribution low-voltage cable outgoing line operation monitoring device and a method of using the same

Abstract

The application provides a multi-path power distribution low-voltage cable outgoing line operation monitoring device, which comprises an extensible cable communication line, a collection terminal, a serial communication module, a main control module, a wireless communication module, an external antenna, a dial switch, a battery, a power module, an external 220V power supply and a display module; the serial communication module is externally connected with the extensible cable communication line, the extensible cable communication line is connected with a plurality of collection terminals, the wireless communication module is externally connected with the external antenna, and the power module is externally connected with the external 220V power supply. The number of the collection terminals connected with the low-voltage cable outgoing line monitoring device can be expanded according to actual requirements, and the space occupied by the monitoring device is reduced.

Description

Technical Field

[0001] This invention relates to the field of smart power distribution network technology, and in particular to a multi-channel power distribution low-voltage cable outgoing line operation monitoring device and its usage method. Background Technology

[0002] Currently, there are two main methods for monitoring the operation of low-voltage cable outgoing lines in power distribution: One method uses intelligent low-voltage switches. These switches have built-in data acquisition and monitoring functions, allowing them to collect voltage and current data in real time. The built-in processor in the intelligent low-voltage switch determines whether the low-voltage cable outgoing line is operating normally and triggers an alarm function promptly for abnormalities or faults. The drawback is that existing non-intelligent low-voltage switches need to be replaced with them after a power outage, resulting in a large workload and high investment cost. Furthermore, many intelligent low-voltage switches are incompatible with the original non-intelligent low-voltage switches in terms of model and size, making installation impossible. The other method involves adding low-voltage cable outgoing line monitoring modules. One module is installed for each low-voltage cable outgoing line requiring monitoring. These modules include voltage and current transformer acquisition modules and data processing and communication modules. The drawback is that each low-voltage cable outgoing line requires a separate data processing and communication module, making installation cumbersome and space-consuming. In some cases, the installation conditions are not suitable for the actual site, rendering this method unusable.

[0003] As the last mile of power supply for residential users, the reliability of low-voltage distribution cables directly impacts their electricity experience. These cables are ubiquitous throughout cities, numerous and difficult to maintain manually, with long maintenance cycles. It's impossible to promptly monitor their operational status, especially when abnormalities or even faults occur, severely hindering the efficiency of maintenance and repair efforts.

[0004] The existing intelligent low-voltage switch and single-circuit low-voltage line monitoring device technologies have the following main problems in practical applications:

[0005] (1) Intelligent low-voltage switches are expensive, the number of low-voltage cables in the distribution network is huge, the overall investment cost of replacing intelligent low-voltage switches is large, and the promotion and application are difficult.

[0006] (2) Replacing a smart low-voltage switch requires a power outage. Usually, the switch model and size are not compatible with the old switch. The replacement process is time-consuming, resulting in long power outages for users and high pressure on the power supply service.

[0007] (3) Single-circuit low-voltage line monitoring devices are not expandable. There are 4-6 low-voltage cables coming out of the distribution network low-voltage line junction box. Using a single-circuit low-voltage line monitoring device requires 4-6 monitoring devices to be installed in the junction box. Too many monitoring hosts are difficult to install in the small junction box, and the crowded installation situation brings inconvenience to the operation and maintenance personnel.

[0008] (4) Multiple single-circuit low-voltage line monitoring devices are installed in the junction box, resulting in a large number of wiring. If the wiring falls off, it can easily cause short circuit faults in live equipment, posing a safety hazard.

[0009] (5) The single-circuit low-voltage line monitoring device is not equipped with a backup power supply. After the low-voltage line trips due to a fault, the monitoring device will lose power and stop working, and the fault alarm information will not be sent out in time. Summary of the Invention

[0010] In view of this, the purpose of the present invention is to provide a multi-channel power distribution low-voltage cable outgoing line operation monitoring device and its usage method, so that the number of data acquisition terminals connected to the low-voltage cable outgoing line monitoring device can be expanded according to actual needs, thereby reducing the space occupied by the monitoring device.

[0011] To achieve the above objectives, the present invention adopts the following technical solution: a multi-channel power distribution low-voltage cable outgoing line operation monitoring device, comprising an expandable cable communication line, a data acquisition terminal, a serial communication module, a main control module, a wireless communication module, an external antenna, a DIP switch, a battery, a power supply module, an external 220V power supply, and a display module;

[0012] The serial communication module is connected to an external expandable cable, which can be used to connect multiple data acquisition terminals. The wireless communication module is connected to an external antenna, and the power supply module is connected to an external 220V power supply.

[0013] In a preferred embodiment, the main control module interacts bidirectionally with the serial communication module, bidirectionally with the wireless communication module, unidirectionally with the DIP switch, and unidirectionally with the display module; the power module draws power from a battery and an external 220V power supply, and supplies power to the serial communication module, the main control module, the wireless communication module, and the display module.

[0014] In a preferred embodiment, the expandable cable communication line is used in segments according to actual needs. Each segment of the cable communication line includes a male expansion connector, a female expansion connector, a cable communication line splitter, and a female splitter connector. Each segment of the cable communication line connects to 3 acquisition terminals. The acquisition terminal includes a male splitter connector, an acquisition terminal digital-to-analog conversion module, a piercing voltage transformer, an open-type current transformer, and an open-type current transformer fixing clip.

[0015] In a preferred embodiment, six sets of data acquisition terminals are connected via six scalable cable communication lines, with each set of data acquisition terminals having three current transformers and three voltage transformers.

[0016] In a preferred embodiment, the DIP switches are implemented using 6 sets of DIP switches. Each of the 6 sets of DIP switches has two states: "connected" and "disconnected". The "connected" state is counted as 1, and the "disconnected" state is counted as 0. The DIP switches can select 6 operating modes, corresponding to 1-6 sets of data acquisition terminals. An external antenna connection port is used to connect to an external antenna. The battery is a removable battery that can be removed and replaced on the device. The power module is connected to an external 220V power supply through a power interface.

[0017] In a preferred embodiment, an expandable cable communication line is connected to the device via a cable communication line interface; the display module is implemented through an LCD screen; buttons control the LCD screen; an insulating shell encapsulates all internal modules; and a magnetic backing facilitates device installation by directly attaching it to the mounting position without the need for nails.

[0018] This invention also provides a method for using a multi-channel power distribution low-voltage cable outgoing line operation monitoring device, which employs the aforementioned multi-channel power distribution low-voltage cable outgoing line operation monitoring device; including the following steps:

[0019] 1) For a junction box with 4 low-voltage cable outlets that need to be monitored, attach the insulating shell to the junction box door using magnetic backing, and set 4 of the 6 DIP switches to "connected".

[0020] 2) Connect the external antenna through the external antenna connector and place the external antenna in an open area at the top of the junction box;

[0021] 3) Connect the 220V power supply to the power interface from the busbar of the junction box via a wire. After the monitoring device is powered on, the LCD display will light up.

[0022] 4) Connect the four expandable cable communication lines end to end using the male and female expansion connectors, and connect them to the monitoring device through the cable communication line interfaces; starting from the closest point to the monitoring device, the default numbers are: Phase A of Acquisition Terminal 1, Phase B of Acquisition Terminal 1, Phase C of Acquisition Terminal 1, Phase A of Acquisition Terminal 2, Phase B of Acquisition Terminal 2, Phase C of Acquisition Terminal 2, Phase A of Acquisition Terminal 3, Phase B of Acquisition Terminal 3, Phase C of Acquisition Terminal 3, Phase A of Acquisition Terminal 4, Phase B of Acquisition Terminal 4, and Phase C of Acquisition Terminal 4.

[0023] 5) The piercing type voltage transformer and the open type current transformer are connected to the female connector of the cable communication line tap through the male connector of the tap; the open type current transformer is directly snapped in when the low-voltage cable outlet cable is energized and locked by the open type current transformer fixing buckle. At the same time, the piercing type voltage transformer obtains the low-voltage cable outlet operating voltage value by piercing the insulation sheath of the low-voltage cable outlet and contacting the internal copper core.

[0024] 6) The puncture-type voltage transformer and the open-type current transformer will convert the collected electrical quantities into analog quantities through the digital-to-analog conversion module of the acquisition terminal, and transmit them to the serial communication module in MODUBUS RTU format on the expandable cable communication line.

[0025] 7) The main control module receives the collected data from the serial communication module. On the one hand, it transmits the collected information to the network server through the wireless communication module, and the network server saves and analyzes the data. Maintenance personnel can access the network server through a mobile APP to obtain real-time monitoring data. The data can be displayed in various ways such as reports and graphs. On the other hand, the data is displayed locally in real time through the display module. Maintenance personnel can wake up the LCD display by pressing a button and query the data returned by each acquisition terminal.

[0026] 8) In the event of a power outage in the junction box due to a low-voltage cable outgoing line fault, the monitoring device is powered by a battery. The battery is installed in a removable and replaceable position to ensure that the monitoring device can operate normally under any circumstances.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The multi-channel power distribution low-voltage cable outgoing line operation monitoring device includes: 101-expandable cable communication line, 102-acquisition terminal, 103-serial communication module, 104-main control module, 105-wireless communication module, 106-external antenna, 107-DIP switch, 108-battery, 109-power module, 110-external 220V power supply, 111-display module.

[0029] (2) The multi-channel power distribution low-voltage cable outgoing operation monitoring device adopts 101-expandable cable communication line, which can connect multiple acquisition terminals. The present invention is designed to connect 6 acquisition terminals, but is not limited to 6, so as to realize the configuration of one monitoring host corresponding to multiple acquisition terminals, which greatly saves cost and installation space.

[0030] (3) The multi-channel power distribution low-voltage cable outgoing line operation monitoring device adopts an integrated design of 207-puncture type voltage transformer and 208-open type current transformer to reduce the size of the transformer. The 208-open type current transformer is installed by opening and closing, which can be easily installed without interrupting the power supply of the low-voltage cable outgoing line, thus avoiding power outages for users.

[0031] (4) The multi-channel power distribution low-voltage cable outgoing line operation monitoring device adopts the integrated design of 207-puncture type voltage transformer and 208-open type current transformer, which can simultaneously acquire the voltage and current data of the monitored low-voltage cable outgoing line, thereby realizing real-time monitoring and timely knowing whether the voltage cable outgoing line is operating abnormally or has a power outage due to outgoing line fault.

[0032] (5) The multi-channel power distribution low-voltage cable outgoing line operation monitoring device described above, with built-in 303-removable battery, can ensure that the monitoring device works normally for more than 1 hour when the junction box is powered off, and can send fault information to the mobile APP of the operation and maintenance personnel in a timely manner.

[0033] (6) The multi-channel power distribution low-voltage cable outgoing operation monitoring device uses the state of 107-DIP switch to manually input the number of field acquisition terminals connected, and 104-main control module to verify whether the acquired data is missing, thereby improving the acquisition accuracy.

[0034] (7) The back of the multi-channel power distribution low-voltage cable outgoing operation monitoring device is attached to the junction box door with 309 magnetic back adhesive, which makes the installation convenient and quick. Attached Figure Description

[0035] Figure 1 This is a functional connection diagram of a multi-channel power distribution low-voltage cable outgoing line operation monitoring device according to the present invention.

[0036] Figure 2 This is a schematic diagram of an expandable cable communication line for a multi-channel power distribution low-voltage cable outgoing line operation monitoring device according to the present invention.

[0037] Figure 3 This is a schematic diagram of the front and back of a multi-channel power distribution low-voltage cable outgoing line operation monitoring device according to the present invention.

[0038] Figure 4 This is a circuit diagram of a multi-channel power distribution low-voltage cable outgoing line operation monitoring device according to the present invention.

[0039] In the picture:

[0040] 101 - Expandable cable communication line;

[0041] 102 - Data Acquisition Terminal;

[0042] 103 - Serial communication module;

[0043] 104 - Main Control Module;

[0044] 105 - Wireless communication module;

[0045] 106 - External antenna;

[0046] 107 - DIP switch;

[0047] 108-battery;

[0048] 109 - Power Module;

[0049] 110 - External 220V power supply;

[0050] 111 - Display module;

[0051] 201-Extension Connector Male;

[0052] 202-Extension connector female;

[0053] 203 - Cable communication line splitter;

[0054] 204-Tap female connector;

[0055] 205-Tap male connector;

[0056] 206 - Data Acquisition Terminal Digital-to-Analog Conversion Module;

[0057] 207-Piercing type voltage transformer;

[0058] 208 - Open-type current transformer;

[0059] 209 - Open-type current transformer fixing clip;

[0060] 301-6 DIP switches;

[0061] External antenna connection port;

[0062] Removable battery;

[0063] Power interface;

[0064] Cable communication line interface;

[0065] button;

[0066] LCD display screen;

[0067] Insulating outer casing;

[0068] Magnetic backing. Detailed Implementation

[0069] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0070] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0071] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application; as used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise; furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0072] refer to Figure 1-4 The present invention discloses a multi-channel power distribution low-voltage cable outgoing line operation monitoring device, comprising 101-expandable cable communication line, 102-acquisition terminal, 103-serial communication module, 104-main control module, 105-wireless communication module, 106-external antenna, 107-DIP switch, 108-battery, 109-power module, 110-external 220V power supply, and 111-display module.

[0073] Depend on Figure 1 As can be seen, the 103-serial communication module is connected to the 101-expandable cable communication line, the 101-expandable cable communication line is connected to multiple 102-acquisition terminals, the 105-wireless communication module is connected to the 106-external antenna, and the 109-power module is connected to the 110-external 220V power supply.

[0074] Depend on Figure 1 It can be seen that the 104-main control module and the 103-serial communication module have bidirectional data interaction; the 104-main control module and the 105-wireless communication module have bidirectional data interaction; the 104-main control module and the 107-DIP switch have unidirectional data interaction; and the 104-main control module and the 111-display module have unidirectional data interaction. The 109-power module draws power from the 108-battery and the 110-external 220V power supply, and supplies power to the 103-serial communication module, the 104-main control module, the 105-wireless communication module, and the 111-display module.

[0075] Depend on Figure 2 As can be seen, the 101-expandable cable communication line is used in segments according to actual needs. Each segment includes a 201-expandable male connector, a 202-expandable female connector, a 203-cable communication line tap, and a 204-tap female connector. Each segment can connect three 102-acquisition terminals. The 102-acquisition terminal includes a 205-tap male connector, a 206-acquisition terminal analog-to-digital converter module, a 207-piercing voltage transformer, a 208-open current transformer, and a 209-open current transformer fixing clip. Since each junction box typically has no more than six low-voltage cable outlets, this invention can connect six sets of acquisition terminals using six 101-expandable cable communication lines. Each set of acquisition terminals has three current transformers and three voltage transformers.

[0076] Depend on Figure 3 As can be seen, the 107-DIP switch is implemented using 301-6 sets of DIP switches. Each of the 301-6 sets of DIP switches has two states: "On" and "Off". "On" is counted as 1, and "Off" as 0. Six operating modes can be selected via the DIP switches, corresponding to connections to 1-6 sets of data acquisition terminals. The 302-external antenna connection port connects to the 106-external antenna. The 108-battery is implemented using the 303-removable battery, which is replaceable on the device. The 109-power module connects to an external 220V power supply via the 304-power interface. The 101-expandable cable communication line connects to the device via the 305-cable communication line interface. The 111-display module is implemented via the 307-LCD display screen. The 306-button controls the 307-LCD display screen. The 308-insulating shell encapsulates all internal modules. The 309-magnetic backing facilitates device installation; it attaches directly to the mounting position without the need for nails.

[0077] The aforementioned multi-channel power distribution low-voltage cable outgoing line operation monitoring device can achieve low-voltage cable outgoing line operation status monitoring through uninterrupted power supply installation. The specific steps are as follows:

[0078] For a junction box with 4 low-voltage cable outlets that need to be monitored, attach the 308-insulating shell to the junction box door using the 309-magnetic backing, and set the status of 4 DIP switches in the 301-6-group DIP switches to "connected".

[0079] Connect the 106-external antenna through the 302-external antenna connector and place the 106-external antenna in an open area at the top of the junction box.

[0080] Connect the 220V power supply to the busbar of the junction box via a wire through the 304-power interface. After the monitoring device is powered on, the 307-LCD display screen lights up.

[0081] Connect the four 101-expandable cable communication lines end-to-end using the 201-expandable connector male and the 202-expandable connector female, and connect them to the monitoring device via the 305-cable communication line interface. Starting from the point closest to the monitoring device, the default numbers are: Phase A of Acquisition Terminal 1, Phase B of Acquisition Terminal 1, Phase C of Acquisition Terminal 1, Phase A of Acquisition Terminal 2, Phase B of Acquisition Terminal 2, Phase C of Acquisition Terminal 2, Phase A of Acquisition Terminal 3, Phase B of Acquisition Terminal 3, Phase C of Acquisition Terminal 3, Phase A of Acquisition Terminal 4, Phase B of Acquisition Terminal 4, and Phase C of Acquisition Terminal 4.

[0082] The 207-piercing type voltage transformer and the 208-open type current transformer are connected to the 204-tap female connector in the 203-cable communication line taper via the 205-tap male connector. The 208-open type current transformer is directly snapped into place when the low-voltage cable outlet is energized and locked in place by the 209-open type current transformer fixing clip. Meanwhile, the 207-piercing type voltage transformer obtains the low-voltage cable outlet operating voltage value by piercing the insulation sheath of the low-voltage cable outlet to contact the internal copper core.

[0083] The 207-puncture type voltage transformer and the 208-open type current transformer collect electrical quantities, convert analog information into digital information through the 206-acquisition terminal analog-to-digital conversion module, and transmit it to the 103-serial communication module in MODUBUS RTU format on the 101-expandable cable communication line.

[0084] The 104-main control module receives the collected data from the 103-serial communication module. On one hand, it transmits the collected information to the network server via the 105-wireless communication module, where the network server saves and analyzes the data. Maintenance personnel can access the network server via a mobile app to obtain real-time monitoring data, which can be displayed in various ways, such as reports and graphs. On the other hand, it displays the data locally in real time via the 111-display module. Maintenance personnel can wake up the 307-LCD display screen using the 306-button and query the data returned by each acquisition terminal.

[0085] In the event of a power outage in the junction box due to a low-voltage cable outgoing fault, the monitoring device is powered by the 108-battery, which is installed in the 303-removable battery position and is replaceable, ensuring that the monitoring device can operate normally under any circumstances.

Claims

1. A method for using a multi-channel power distribution low-voltage cable outgoing line operation monitoring device, characterized in that, The monitoring device includes: an expandable cable communication line, a data acquisition terminal, a serial communication module, a main control module, a wireless communication module, an external antenna, a DIP switch, a battery, a power supply module, an external 220V power supply, and a display module; The serial communication module is connected to an external expandable cable communication line, which can be connected to multiple data acquisition terminals. The wireless communication module is connected to an external antenna, and the power supply module is connected to an external 220V power supply. The method of use includes the following steps: 1) For a junction box with 4 low-voltage cable outlets that need to be monitored, attach the insulating shell to the junction box door using magnetic backing, and set 4 of the 6 DIP switches to "connected" status. 2) Connect the external antenna through the external antenna connector and place the external antenna in an open area at the top of the junction box; 3) Connect the 220V power supply to the power interface from the busbar of the junction box via a wire. After the monitoring device is powered on, the LCD display will light up. 4) Connect the four expandable cable communication lines end to end using the male and female expansion connectors, and connect them to the monitoring device through the cable communication line interfaces; starting from the closest point to the monitoring device, the default numbers are: Phase A of Acquisition Terminal 1, Phase B of Acquisition Terminal 1, Phase C of Acquisition Terminal 1, Phase A of Acquisition Terminal 2, Phase B of Acquisition Terminal 2, Phase C of Acquisition Terminal 2, Phase A of Acquisition Terminal 3, Phase B of Acquisition Terminal 3, Phase C of Acquisition Terminal 3, Phase A of Acquisition Terminal 4, Phase B of Acquisition Terminal 4, and Phase C of Acquisition Terminal 4. 5) The piercing type voltage transformer and the open type current transformer are connected to the female connector of the cable communication line tap through the male connector of the tap; the open type current transformer is directly snapped in when the low-voltage cable outlet cable is energized and locked by the open type current transformer fixing buckle. At the same time, the piercing type voltage transformer obtains the low-voltage cable outlet operating voltage value by piercing the insulation sheath of the low-voltage cable outlet and contacting the internal copper core. 6) The puncture-type voltage transformer and the open-type current transformer will convert the collected electrical quantities into analog quantities through the digital-to-analog conversion module of the acquisition terminal, and transmit them to the serial communication module in MODUBUS RTU format on the expandable cable communication line. 7) The main control module receives the collected data from the serial communication module. On one hand, it transmits the collected information to the network server through the wireless communication module, where the network server saves and analyzes the data. Maintenance personnel can access the network server through a mobile APP to obtain real-time monitoring data, which is displayed in the form of reports or graphs. On the other hand, the data is displayed locally in real time through the display module. Maintenance personnel can wake up the LCD display by pressing a button and query the data returned by each acquisition terminal. 8) In the event of a power outage in the junction box due to a low-voltage cable outgoing line fault, the monitoring device is powered by a battery. The battery is installed in a removable and replaceable position to ensure that the monitoring device can operate normally under any circumstances.

2. The method of using the multi-channel power distribution low-voltage cable outgoing line operation monitoring device according to claim 1, characterized in that, The main control module interacts bidirectionally with the serial communication module, bidirectionally with the wireless communication module, unidirectionally with the DIP switch, and unidirectionally with the display module. The power module draws power from the battery and an external 220V power supply, and supplies power to the serial communication module, main control module, wireless communication module, and display module.

3. The method of using the multi-channel power distribution low-voltage cable outgoing line operation monitoring device according to claim 1, characterized in that, The expandable cable communication line can be used in segments according to actual needs. Each segment of the cable communication line includes a male expansion connector, a female expansion connector, a cable communication line tap, and a female tap. Each segment of the cable communication line connects to 3 acquisition terminals. The acquisition terminal includes a male tap, an acquisition terminal digital-to-analog conversion module, a piercing voltage transformer, an open current transformer, and an open current transformer fixing clip.

4. The method of using the multi-channel power distribution low-voltage cable outgoing line operation monitoring device according to claim 1, characterized in that, The device uses six sets of DIP switches, each with two states: "on" and "off". "On" is counted as 1, and "off" as 0. These switches allow selection of six operating modes, corresponding to 1-6 sets of data acquisition terminals. An external antenna connector connects to the device. The battery is removable and replaceable. The power module connects to an external 220V power supply via a power interface.

5. The method of using a multi-channel power distribution low-voltage cable outgoing line operation monitoring device according to claim 1, characterized in that, An expandable cable communication line connects to the device via a cable communication line interface; the display module is implemented through an LCD screen; buttons control the LCD screen; an insulating shell encapsulates all internal modules; and a magnetic backing facilitates device installation, allowing it to be directly attached to the mounting position without the need for nails.

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