Modularized low-voltage relay protection monitoring device

Abstract

The invention discloses a modularized low-voltage relay protection monitoring device, and relates to the technical field of modularized low-voltage relay protection monitoring, the modularized low-voltage relay protection monitoring device comprises a monitoring device assembly and two positioning blocks with holes, the top of the monitoring device assembly is provided with a positioning assembly, the positioning assembly comprises a strip-shaped column, and the top of the strip-shaped column is provided with two strip-shaped grooves; two L-shaped extrusion plates are extruded to drive two strong springs and two T-shaped insertion blocks to linearly move for a certain distance under the action of two telescopic rods, then two positioning blocks with holes are located in two strip-shaped grooves, then the two extrusion plates are loosened to drive the two insertion blocks to move under the action of the two strong springs, and the two insertion blocks are inserted into the two strip-shaped grooves. The monitoring device body is inserted into the two limiting holes, penetrates through the two positioning blocks with holes and then is inserted into the two limiting holes, so that the monitoring device body is preliminarily positioned at a designated position, subsequent installation cannot be affected by the weight of the monitoring device body, the monitoring device body can be conveniently and accurately installed at the designated position subsequently, and the installation efficiency is improved.

Description

A modular low-voltage relay protection monitoring device Technical Field

[0001] This invention relates to the field of modular low-voltage relay protection monitoring technology, specifically a modular low-voltage relay protection monitoring device. Background Technology

[0002] The modular low-voltage relay protection monitoring device is an intelligent device that integrates relay protection functions and electrical parameter monitoring functions. It is specifically designed for low-voltage power distribution systems. Its "modular" design means that the device consists of multiple independently operable, interchangeable, or expandable functional modules, such as current measurement modules, voltage measurement modules, protection logic modules, communication modules, and display modules. This design provides high flexibility, configurability, and ease of maintenance, and can be customized and upgraded according to specific application requirements.

[0003] Currently, when modular low-voltage relay protection devices are used, they are usually installed at critical locations in the power distribution system and connected to the corresponding electrical equipment to achieve their protection and monitoring functions. When the protection and monitoring device is installed in the distribution cabinet, it is installed on the horizontal plate, cabinet door, or side plate of the distribution cabinet according to the needs of the distribution cabinet. Although there are corresponding installation areas in the distribution cabinet, when it is installed on the side plate or cabinet door, due to its own weight, it is not possible for the staff to quickly install it in the corresponding position. The adaptability is not high, which reduces the installation efficiency.

[0004] Therefore, we propose a modular low-voltage relay protection monitoring device to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a modular low-voltage relay protection monitoring device to solve the problem mentioned in the background art that its own weight makes it impossible for workers to quickly install it in the appropriate location.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a modular low-voltage relay protection monitoring device, comprising a monitoring device assembly and two perforated positioning blocks, wherein a positioning component is provided on the top of the monitoring device assembly; the positioning component includes a strip column, the top of which has two strip grooves, one inner wall of each of the two strip grooves is fixedly installed with a strip groove, one inner wall of each of the two strip grooves is fixedly installed with a strong spring, one inner wall of each of the two strip grooves is fixedly installed with a telescopic rod, and the outer walls of the two telescopic rods are connected to the interior of the two strong springs; one outer wall of each of the two strong springs is fixedly installed with an insert, both inserts being T-shaped, and the outer walls of the two inserts are fixedly connected to the output ends of the two telescopic rods; one inner wall of each of the two strip grooves has a limiting hole, and the outer walls of the two inserts are movably inserted into the two limiting holes; one top of each of the two inserts is fixedly installed with an extrusion plate, and both extrusion plates are L-shaped.

[0007] Preferably, the monitoring device assembly includes a monitoring device body, and two porous blocks are fixedly installed on the outer wall of the monitoring device body. A first positioning hole is opened at the bottom of each of the two porous blocks, and a second positioning hole is opened on one side of the outer wall of each of the two porous blocks.

[0008] Preferably, a display screen is provided on one side of the outer wall of the monitoring device body, and multiple input buttons are provided on one side of the outer wall of the monitoring device body. Two lugs are fixedly installed on the top of the monitoring device body, and two rectangular blocks are fixedly installed on one side of the outer wall of the strip column. The top of each of the two rectangular blocks is provided with a rectangular hole, and the outer walls of the two lugs are movably inserted into the two rectangular holes. The inner walls of the two lugs are threaded with fixing bolts.

[0009] Preferably, the bottom of the monitoring device assembly contacts a first mounting component, the first mounting component includes a first attached mounting strip, both sides of the outer wall of the first attached mounting strip are fixedly mounted with protrusions, the top of the two protrusions are fixedly mounted with first positioning blocks, and the outer walls of the two first positioning blocks are movably inserted into the interior of the two first positioning holes.

[0010] Preferably, the outer wall of the monitoring device body contacts a second mounting component. The second mounting component includes two second auxiliary mounting strips. A second positioning block is fixedly mounted on one side of the outer wall of each of the two second auxiliary mounting strips, and the outer walls of the two second positioning blocks are movably inserted into the interior of two second positioning holes.

[0011] A modular low-voltage relay protection monitoring system includes: a sampling unit, a protection unit, a human-machine interface (HMI) display unit, a control unit, and a communication unit. The sampling unit is used to collect various circuit signals in the low-voltage relay in real time and accurately, and convert these signals into digital information for transmission to the protection unit. The protection unit receives the digital information transmitted from the sampling unit, analyzes it, and then transmits it to the control unit. The HMI display unit provides an interface for users to input information, execute operation commands, and display data with the low-voltage relay protection monitoring device, and transmits the input information to the control unit. The control unit executes corresponding control actions based on the operation commands from the protection unit and the control commands received through the HMI display unit. The communication unit enables data exchange between the control unit and external systems, and uploads real-time data, fault information, and event records.

[0012] Preferably, the sampling unit includes a current measurement module, a voltage measurement module, a temperature measurement module, a signal conditioning circuit module, and an A / D converter module. The current measurement module is used to measure the current in the low-voltage relay, the voltage measurement module is used to measure the voltage in the low-voltage relay, and the temperature measurement module is used to measure the temperature inside the low-voltage relay device.

[0013] Preferably, the signal conditioning circuit module is used to preprocess the raw analog signals from the current, voltage, temperature and other measurement modules to make them meet the input requirements of the A / D converter. The A / D converter is used to convert the continuously changing analog electrical signals after signal conditioning into digital signals.

[0014] Preferably, the protection unit includes a setting management module and a protection program module. The setting management module is used to store, manage, configure, and retrieve various setting values ​​required for the protection function. The protection program module is used to determine the system status by combining real-time data obtained from the sampling unit with the setting parameters provided by the setting management module.

[0015] Preferably, the human-machine display unit includes a display module, a button module, an indicator module, and an alarm module, and the control unit includes a circuit breaker module and a circuit breaker closing module. The circuit breaker module is used to disconnect the circuit, and the circuit breaker closing module is used to connect the circuit.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the device needs to be installed on the side panel or cabinet door inside the distribution cabinet, by squeezing the two L-shaped extrusion plates, under the action of the two telescopic rods, it drives the two strong springs and the two T-shaped plugs to move linearly a certain distance, and then it is placed against the side panel of the distribution cabinet, and the two perforated positioning blocks are located in the two strip grooves. Then the two extrusion plates are released, and under the action of the two strong springs, it drives the two plugs to move, and they pass through the two perforated positioning blocks and are then inserted into the two limiting holes. Thus, the main body of the monitoring device is initially positioned in the designated position, and its own weight will not affect the subsequent installation, and it is convenient to accurately install it in the designated position, thus improving the installation efficiency.

[0017] 2. Once the monitoring device body is positioned in the designated location, its first attached mounting strip, through the action of two perforated blocks, two protrusions, two first positioning blocks, and two first positioning holes, allows the first attached mounting strip to quickly be positioned at a suitable location on the bottom of the monitoring device body. It can then be installed on the corresponding location on the side plate using multiple fasteners. When the monitoring device body needs to be installed on a horizontal plate, its second attached mounting strip, through the action of two perforated blocks, two second positioning blocks, and two second positioning holes, can quickly be positioned at suitable locations on both sides of the monitoring device body. It can then be installed on the corresponding location on the horizontal plate using multiple fasteners, thus demonstrating adaptability.

[0018] 3. Through the sampling unit, various circuit signals in the low-voltage relay can be collected in real time and accurately, and converted into digital information and transmitted to the protection unit. The protection unit then receives the digital information transmitted from the sampling unit, analyzes it, and transmits it to the control unit. The human-machine interface provides an interface for users to input information, operate commands, and display data with the low-voltage relay protection and monitoring device, and transmits the input information to the control unit. The control unit can execute corresponding control actions according to the operation commands of the protection unit and the control commands received through the human-machine interface. The communication unit enables data exchange between the control unit and external systems, and uploads real-time data, fault information, and event records. Attached Figure Description

[0019] Figure 1 is a perspective view of a modular low-voltage relay protection monitoring device of the present invention; Figure 2 is a bottom view of the modular low-voltage relay protection monitoring device of the present invention installed on a side plate; Figure 3 is a disassembled view of the positioning components of the modular low-voltage relay protection monitoring device of the present invention; Figure 4 is a schematic diagram of the installation of the modular low-voltage relay protection monitoring device of the present invention on a side plate; Figure 5 is a schematic diagram of the installation of the modular low-voltage relay protection monitoring device of the present invention on a horizontal plate; Figure 6 is a disassembled view of the installation of the modular low-voltage relay protection monitoring device of the present invention on a horizontal plate; Figure 7 is a system block diagram of the modular low-voltage relay protection monitoring device of the present invention.

[0020] In the diagram: 1. Monitoring device components; 101. Monitoring device body; 102. Perforated block; 103. First positioning hole; 104. Second positioning hole; 105. Display screen; 106. Input button; 107. Ear block; 2. Positioning component; 201. Strip column; 202. Strip groove; 203. Strong spring; 204. Telescopic rod; 205. Insert block; 206. Limiting hole; 207. Extrusion plate; 208. Rectangular block; 209. Rectangular hole; 210. Fixing bolt; 3. Positioning block with holes; 4. First mounting component; 401. First attached mounting strip; 402. Protrusion; 403. First positioning... 5. Second mounting component; 501. Second mounting strip; 502. Second positioning block; 6. Sampling unit; 601. Current measurement module; 602. Voltage measurement module; 603. Temperature measurement module; 604. Signal conditioning circuit module; 605. A / D converter module; 7. Protection unit; 701. Setting value management module; 702. Protection program module; 8. Human-machine display unit; 801. Display module; 802. Button module; 803. Indicator module; 804. Alarm module; 9. Control unit; 901. Circuit breaker module; 902. Circuit breaker closing module; 10. Communication unit. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please refer to Figures 1-6. The present invention provides a technical solution: a modular low-voltage relay protection monitoring device, comprising a monitoring device assembly 1 and two perforated positioning blocks 3. A positioning assembly 2 is disposed on the top of the monitoring device assembly 1. The positioning assembly 2 includes a strip-shaped column 201, with two strip-shaped grooves 202 formed on the top of the column 201. A strip-shaped groove 202 is fixedly installed on one side of the inner wall of each of the two strip-shaped grooves 202. A strong spring 203 is fixedly installed on one side of the inner wall of each of the two strip-shaped grooves 202. A telescopic rod 204 is fixedly installed on one side of the inner wall of each of the two strip-shaped grooves 202. The outer walls of each telescopic rod 204 are connected to the interior of each of the two powerful springs 203. Each of the two powerful springs 203 has a fixed insert 205 on one side of its outer wall. Both inserts 205 are T-shaped and are fixedly connected to the output ends of the two telescopic rods 204 on one side of their outer walls. Each of the two strip grooves 202 has a limit hole 206 on one side of its inner wall. The outer walls of the two inserts 205 are movably inserted into the two limit holes 206. Each of the two inserts 205 has a pressing plate 207 fixedly installed on its top. Both pressing plates 207 are L-shaped.

[0023] In this embodiment, when the modular low-voltage relay protection monitoring device needs to be installed in the distribution cabinet, and it needs to be installed on the side panel inside the distribution cabinet, two perforated positioning blocks 3 will be installed in a designated area on the side panel. At this time, the strip column 201 passes through two rectangular blocks 208 and two rectangular holes 209 and is fitted onto two ear blocks 107. Under the action of two fixing bolts 210, the strip column 201 can be installed on the monitoring device body 101. Since the two L-shaped extrusion plates 207 are installed on two T-shaped inserts 205, by simultaneously extruding the two extrusion plates 207, it can drive the two inserts 205 to simultaneously extrude the strong springs 203 installed in the two strip grooves 202. Under the action of the two telescopic rods 204, it can ensure that the two The pressing plate 207 drives the two insert blocks 205 to move linearly, so that the monitoring device body 101 contacts the side panel inside the distribution cabinet, and the two perforated positioning blocks 3 are inserted into the two strip slots 202. At this time, the two pressing plates 207 are released, and under the action of the two strong springs 203, they drive the two insert blocks 205 to move and pass through the two perforated positioning blocks 3. At the same time, they are also inserted into the limiting holes 206 opened on one side of the inner wall of the two strip slots 202, thereby limiting the two perforated positioning blocks 3 in the strip column 201. At the same time, the monitoring device body 101 is positioned in the designated position on the inner side panel of the distribution cabinet. It will not affect the subsequent installation due to its own weight, and it is convenient to accurately install it in the designated position, thus improving the installation efficiency.

[0024] As shown in Figures 1, 2, and 4-6, the monitoring device assembly 1 includes a monitoring device body 101. Two porous blocks 102 are fixedly installed on the outer wall of the monitoring device body 101. Each porous block 102 has a first positioning hole 103 at its bottom and a second positioning hole 104 on one side of its outer wall. A display screen 105 is installed on one side of the outer wall of the monitoring device body 101. Multiple input buttons 106 are also installed on one side of the outer wall of the monitoring device body 101. Two ear blocks 107 are fixedly installed on the top of the monitoring device body 101. Two rectangular blocks 208 are fixedly installed on one side of the outer wall of the strip column 201. Each rectangular block 208 has a rectangular hole 209 at its top, and the outer walls of the two ear blocks 107 are movably inserted into the two rectangular holes 209. Each ear block 107 has a threaded fixing bolt 210 on its inner surface wall. The bottom of the monitoring device assembly 1 contacts the first mounting assembly 4. The first mounting assembly 4 includes a first auxiliary mounting strip 401. Both sides of the outer wall of the first auxiliary mounting strip 401 are fixedly mounted with protrusions 402. The top of each of the two protrusions 402 is fixedly mounted with a first positioning block 403. The outer walls of the two first positioning blocks 403 are movably inserted into the interior of the two first positioning holes 103. The outer wall of the monitoring device body 101 contacts the second mounting assembly 5. The second mounting assembly 5 includes two second auxiliary mounting strips 501. One side of the outer wall of each of the two second auxiliary mounting strips 501 is fixedly mounted with a second positioning block 502. The outer walls of the two second positioning blocks 502 are movably inserted into the interior of the two second positioning holes 104.

[0025] In this embodiment, the monitoring device body 101, through the display screen 105 and multiple input buttons 106, can input corresponding data information, which can be displayed on the display screen 105. The monitoring device body 101 is equipped with indicator lights and alarms, all of which are connected to external system equipment. Since perforated blocks 102 are installed on both sides of the monitoring device body 101, and the bottom and outer wall of each perforated block 102 are respectively provided with a first positioning hole 103 and a second positioning hole 104, they can be used to accommodate the positioning of the monitoring device body 101 on the side panel or horizontal plate of the power distribution cabinet. When it needs to be installed on the side panel, it is positioned in the corresponding position by the positioning component 2. Since two protrusions 402 are installed on the outer wall of the first attached mounting strip 401, and a first positioning block 403 is installed on each of the two protrusions 402, the two first positioning blocks 403 are simultaneously inserted into the two first positioning holes. Within 103, the first attached mounting strip 401 can be positioned at a suitable location at the bottom of the monitoring device body 101, and the mounting holes on the first attached mounting strip 401 correspond to the mounting positions on the side plate. With the help of multiple fasteners, it can be installed at the designated position on the side plate. When it needs to be installed on the horizontal plate inside the distribution cabinet, since the second positioning blocks 502 are installed on one side of the outer wall of the two second attached mounting strips 501, and the two second positioning blocks 502 are simultaneously inserted into the two second positioning holes 104, the two second attached mounting strips 501 can be positioned at suitable locations on both sides of the monitoring device body 101. With the help of multiple fasteners, it can be installed at the designated position on the horizontal plate. The first attached mounting strip 401 and the second attached mounting strip 501 are both set to the corresponding size according to the outer dimensions of the modular low-voltage relay protection monitoring device, and the device comes with them. The appropriate installation method can be selected according to the installation requirements on site.

[0026] As shown in Figure 7, a modular low-voltage relay protection monitoring system includes: a sampling unit 6, a protection unit 7, a human-machine interface (HMI) display unit 8, a control unit 9, and a communication unit 10. The sampling unit 6 is used to collect various circuit signals in the low-voltage relay in real time and accurately, and convert these signals into digital information for transmission to the protection unit 7. The protection unit 7 receives the digital information transmitted from the sampling unit 6, analyzes it, and then transmits it to the control unit 9. The HMI display unit 8 provides an interface for users to input information, execute operation commands, and display data with the low-voltage relay protection monitoring device, and transmits the input information to the control unit 9. The control unit 9 executes corresponding control actions based on the operation commands of the protection unit 7 and the control commands received through the HMI display unit 8. The communication unit 10 enables data exchange between the control unit 9 and external systems, and uploads real-time data, fault information, and event records. The sampling unit 6 includes a current measurement module 601, a voltage measurement module 602, a temperature measurement module 603, a signal conditioning circuit module 604, and an A / D converter module 605. The current measurement module 601 is used for... The system includes modules for measuring current in low-voltage relays, voltage measurement (602) for measuring voltage in low-voltage relays, temperature measurement (603) for measuring temperature within the low-voltage relay device, signal conditioning circuit (604) for preprocessing the raw analog signals from the current, voltage, and temperature measurement modules to meet the input requirements of A / D converter (605), and A / D converter (605) for converting the continuously changing analog electrical signals after signal conditioning into digital signals. The protection unit 7 includes a setting management module (701) and a protection program module. 702, the setting management module 701 is used to store, manage, configure and retrieve various setting values ​​required for the protection function. The protection program module 702 is used to obtain real-time data from the sampling unit 6 and combine it with the setting parameters provided by the setting management module 701 to determine the system status. The human-machine display unit 8 includes a display module 801, a button module 802, an indicator module 803 and an alarm module 804. The control unit 9 includes a circuit breaker module 901 and a circuit breaker module 902. The circuit breaker module 901 is used to disconnect the circuit, and the circuit breaker module 902 is used to connect the circuit.

[0027] In this embodiment, when the modular low-voltage relay protection monitoring device is installed in the distribution cabinet and connected to an external power supply, the human-machine interface unit 8 provides an interface for users to input information, operate commands, and display data with the low-voltage relay protection monitoring device. It also transmits the input information to the control unit 9. Specifically, operators can input various preset parameters into the human-machine interface unit 8 via the button module 802, which are then displayed on the screen 105 of the display module 801. Simultaneously, these parameters are recorded and stored in the setting management module 701 within the protection unit 7. Then, through the communication unit 10, the corresponding data information is transmitted to the external system equipment. When the equipment in the distribution cabinet is operating, the current measurement module 601, voltage measurement module 602, and temperature measurement module 603 in the sampling unit 6 can collect various circuit signals in the low-voltage relay in real time and accurately. Furthermore, through the signal conditioning circuit module 604, the original analog signals from the current, voltage, and temperature measurement modules are preprocessed to make the signals more accurate. It meets the input requirements of the A / D converter module 605. Through the A / D converter module 605, the continuously changing analog electrical signal after signal conditioning is converted into a digital signal and transmitted to the protection unit 7. Then, through the protection unit 7, the various digital information transmitted from the sampling unit 6 is compared and analyzed with the information stored in the setting management module 701 under the action of the protection program module 702 to determine the system status and whether corresponding operations need to be performed. Then, it is transmitted to the control unit 9. Through the action of the control unit 9, the corresponding control actions can be performed according to the operation instructions of the protection unit 7 and the control commands received by the human-machine display unit 8. That is, the circuit is disconnected through the circuit breaker module 901. At the same time, through the action of the indicator module 803 and the alarm module 804, corresponding indicators and alarm sounds can be provided. Under the action of the communication unit 10, data exchange between the control unit 9 and the human-machine display unit 8 and the external system can be realized, and real-time data, fault information and event records can be uploaded.

[0028] The usage and working principle of this device are as follows: First, when the monitoring device body 101 needs to be installed on the side panel inside the distribution cabinet, the strip column 201 is first placed on the two ear blocks 107 through two rectangular blocks 208 and two rectangular hole sleeves 209, and then fixed with two fixing bolts 210. Then, the two pressing plates 207 simultaneously drive the two insert blocks 205 to move relative to each other, and simultaneously compress the two strong springs 203. Since the two telescopic rods 204 are installed between the inner walls of the two strip grooves 202 and the two insert blocks 205, the smooth movement of the insert blocks 205 and the strong springs 203 can be ensured. Next, the monitoring device body 101 is brought into contact with the designated position on the side panel, and the two perforated positioning blocks 3 can be inserted into the two strip grooves 202. Inside the slot 202, the two pressing plates 207 are released. Under the action of the two strong springs 203, the two inserts 205 can pass through the two perforated positioning blocks 3 and be inserted into the two limiting holes 206. This limits the two perforated positioning blocks 3 within the strip column 201, positioning the strip column 201 and the monitoring device body 101 at corresponding positions on the side plate, achieving a positioning effect. Then, the two protrusions 402 and the two first positioning blocks 403 are inserted into the two first positioning holes 103, positioning the first attached mounting strip 401 at a designated position below the monitoring device body 101. With the action of multiple fasteners, it can be installed in the designated position with high installation efficiency. When it needs to be installed on the horizontal plate inside the distribution cabinet... In this case, the positioning components 2, such as the strip column 201, are not needed. Simply place the monitoring device body 101 on the designated area on the horizontal plate, and insert the two second positioning blocks 502, which are mounted on one side of the outer wall of the two second auxiliary mounting strips 501, into the two second positioning holes 104. This positions the two second auxiliary mounting strips 501 appropriately on both sides of the monitoring device body 101, corresponding to the mounting areas on the horizontal plate. Once the monitoring device body 101 is installed and connected to an external power supply, the user can input various preset parameters into the display module 802 via multiple input buttons 106 on the button module 802, and these parameters will be displayed on the screen 10 of the display module 801. The input parameters are displayed on the 5th panel and simultaneously recorded and stored in the setting management module 701 within the protection unit 7. The input parameter information is also transmitted to the control unit 9. Then, when the equipment in the distribution cabinet is operating, the current measurement module 601, voltage measurement module 602, and temperature measurement module 603 in the sampling unit 6 can accurately and in real time acquire various circuit signals from the low-voltage relay. The signal conditioning circuit module 604 preprocesses the raw analog signals from each measurement module to meet the input requirements of the A / D converter module 605. The A / D converter module 605 then converts the continuously changing analog electrical signals after signal conditioning into digital signals, which are simultaneously transmitted to the protection unit 7.Then, under the action of the protection program module 702 within the protection unit 7, it compares and analyzes the information stored in the setting management module 701 to determine the system status. Simultaneously, the indicator module 803 and alarm module 804 provide corresponding indications and alarm sounds. This information is then transmitted to the control unit 9. Based on the operation instructions of the protection unit 7 and the control commands received through the human-machine interface unit 8, the control unit 9 executes corresponding control actions, namely, disconnecting the circuit through the circuit breaker module 901. Finally, with the help of the communication unit 10, data exchange between the control unit 9 and external systems is achieved, and real-time data, fault information, and event logs are uploaded.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular low-voltage relay protection monitoring device, comprising a monitoring device assembly (1) and two perforated positioning blocks (3), characterized in that: The monitoring device assembly (1) is provided with a positioning assembly (2) on its top; the positioning assembly (2) includes a strip column (201), the top of which has two strip grooves (202), one side of the inner wall of each of the two strip grooves (202) is fixedly installed with a strip groove (202), one side of the inner wall of each of the two strip grooves (202) is fixedly installed with a strong spring (203), one side of the inner wall of each of the two strip grooves (202) is fixedly installed with a telescopic rod (204), and the outer walls of the two telescopic rods (204) are connected to the two strong springs (203). The two springs (203) are internally connected. Each of the two springs (203) has a plug (205) fixedly installed on one side of its outer wall. Both plugs (205) are T-shaped. The output ends of two telescopic rods (204) are fixedly connected to each other on one side of the outer wall of the two plugs (205). Each of the two strip grooves (202) has a limit hole (206) on one side of its inner wall. The outer walls of the two plugs (205) are movably inserted into the two limit holes (206). Each of the two plugs (205) has a pressing plate (207) fixedly installed on its top. Both pressing plates (207) are L-shaped.

2. The modular low-voltage relay protection monitoring device according to claim 1, characterized in that: The monitoring device assembly (1) includes a monitoring device body (101), and two porous blocks (102) are fixedly installed on the outer wall of the monitoring device body (101). A first positioning hole (103) is opened at the bottom of each of the two porous blocks (102), and a second positioning hole (104) is opened on one side of the outer wall of each of the two porous blocks (102).

3. The modular low-voltage relay protection monitoring device according to claim 2, characterized in that: A display screen (105) is provided on one side of the outer wall of the monitoring device body (101). Multiple input buttons (106) are provided on one side of the outer wall of the monitoring device body (101). Two ear blocks (107) are fixedly installed on the top of the monitoring device body (101). Two rectangular blocks (208) are fixedly installed on one side of the outer wall of the strip column (201). A rectangular hole (209) is opened on the top of each of the two rectangular blocks (208). The outer walls of the two ear blocks (107) are movably inserted into the two rectangular holes (209). The inner walls of the two ear blocks (107) are threaded with fixing bolts (210).

4. The modular low-voltage relay protection monitoring device according to claim 3, characterized in that: The bottom of the monitoring device assembly (1) is in contact with a first mounting assembly (4). The first mounting assembly (4) includes a first attached mounting strip (401). Both sides of the outer wall of the first attached mounting strip (401) are fixedly mounted with protrusions (402). The tops of the two protrusions (402) are fixedly mounted with first positioning blocks (403), and the outer walls of the two first positioning blocks (403) are movably inserted into the interior of the two first positioning holes (103).

5. The modular low-voltage relay protection monitoring device according to claim 4, characterized in that: The outer wall of the monitoring device body (1) is in contact with a second mounting component (5). The second mounting component (5) includes two second auxiliary mounting strips (501). A second positioning block (502) is fixedly installed on one side of the outer wall of each of the two second auxiliary mounting strips (501), and the outer walls of the two second positioning blocks (502) are movably inserted into the interior of the two second positioning holes (104).

6. The modular low-voltage relay protection monitoring device according to claim 5, characterized in that: It also includes a modular low-voltage relay protection monitoring system, which includes: a sampling unit (6), a protection unit (7), a human-machine display unit (8), a control unit (9), and a communication unit (10); the sampling unit (6) is used to collect various circuit signals in the low-voltage relay in real time and accurately, and convert the various circuit signals into digital information and transmit them to the protection unit (7); the protection unit (7) is used to receive various digital information transmitted from the sampling unit (6), analyze it, and then transmit it to the control unit (9); the human-machine display unit (8) is used to provide an interface for users to input information, operate instructions, and display data with the low-voltage relay protection monitoring device, and transmit the input information to the control unit (9); the control unit (9) is used to execute corresponding control actions according to the operation instructions of the protection unit (7) and the control commands received through the human-machine display unit (8); the communication unit (10) is used to realize data exchange between the control unit (9) and external systems, and upload real-time data, fault information, and event records.

7. The modular low-voltage relay protection monitoring device according to claim 6, characterized in that: The sampling unit (6) includes a current measurement module (601), a voltage measurement module (602), a temperature measurement module (603), a signal conditioning circuit module (604), and an A / D converter module (605). The current measurement module (601) is used to measure the current in the low-voltage relay, the voltage measurement module (602) is used to measure the voltage in the low-voltage relay, and the temperature measurement module (603) is used to measure the temperature inside the low-voltage relay device.

8. The modular low-voltage relay protection monitoring device according to claim 7, characterized in that: The signal conditioning circuit module (604) is used to preprocess the original analog signals from the current, voltage, temperature and other measurement modules to make them meet the input requirements of the A / D converter (605). The A / D converter (605) is used to convert the continuously changing analog electrical signal after signal conditioning into a digital signal.

9. The modular low-voltage relay protection monitoring device according to claim 8, characterized in that: The protection unit (7) includes a setting management module (701) and a protection program module (702). The setting management module (7) is used to store, manage, configure and retrieve various setting values ​​required for the protection function. The protection program module (702) is used to obtain real-time data from the sampling unit (6) and combine it with the setting parameters provided by the setting management module (701) to determine the status of the system.

10. The modular low-voltage relay protection monitoring device according to claim 9, characterized in that: The human-machine display unit (8) includes a display module (801), a button module (802), an indicator module (803), and an alarm module (804). The control unit (9) includes a circuit breaker module (901) and a circuit breaker closing module (902). The circuit breaker module (901) is used to disconnect the circuit, and the circuit breaker closing module (902) is used to connect the circuit.

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