Direct-current power distribution monitoring transformation assembly

Abstract

The utility model discloses a DC power distribution monitoring transformation assembly, and belongs to the technical field of power supplies. According to the utility model, a modular design is adopted, and a monitoring output signal acquisition function of the DC power distribution cabinet is integrated in an independent assembly. The assembly receives a monitoring output signal from a DC power distribution cabinet through an external standard wiring terminal, the power distribution monitoring board is responsible for collecting, processing and alarming the monitoring output signal, and the monitoring expansion board is used for expanding the number of input ports of the power distribution monitoring board. The assembly is small in size, can be installed in a DC power distribution cabinet, is convenient in interface connection, and is high in universality and integration degree. By using the DC power distribution monitoring transformation assembly provided by the scheme of the utility model, the replacement of DC power distribution monitoring systems of different manufacturers can be completed very conveniently, and the overall monitoring performance and function are significantly improved. Meanwhile, according to the scheme, the updating cost and risk of the old power supply system are greatly reduced, and the expenditure in the power supply updating process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to a DC power distribution monitoring and transformation component. Background Art

[0002] The discrete power supply systems used in communications core buildings typically consist of AC distribution cabinets, DC distribution cabinets, and rectifier cabinets. When renovating DC distribution cabinets, upgrading their monitoring systems becomes a key issue. Traditional DC distribution monitoring in older power systems typically relies on the coordinated operation of multiple boards to form a complete monitoring system. However, as these systems age, typically after around 10 years, they reach the end of their lifespan, exhibiting numerous fault nodes, unstable operation, and increased failure rates. These systems present significant risks and therefore urgently require upgrades.

[0003] Currently, a common retrofit solution is to completely replace the old DC distribution cabinet with a new one, a so-called "cutover replacement." However, this approach is not only costly and time-consuming to implement, but also carries significant risks. Furthermore, during the cutover replacement process, some components in the old power system (such as the overall architecture, copper busbars, and cables) still have significant value. A complete replacement wastes existing resources, hindering their efficient utilization and cost savings.

[0004] Therefore, a more cost-effective and risk-controlled DC distribution cabinet transformation solution is urgently needed to solve the problems of the existing system and make full use of the available resources of the original system. Utility Model Content

[0005] In response to the above-mentioned problems of the prior art, the present invention provides a DC distribution monitoring modification component for upgrading and modifying the DC distribution monitoring of old power supplies of various brands, so as to solve the problems of high cost, long implementation cycle, and waste of resources caused by the overall replacement of DC distribution cabinets.

[0006] The utility model provides a DC power distribution monitoring and modification component, which is installed in a DC power distribution cabinet; the DC power distribution monitoring and modification component includes a shell, a power distribution monitoring board and a monitoring expansion board located in the shell, a display screen located on the surface of the shell, and a standard wiring terminal located outside the shell; the input end of the standard wiring terminal is connected to the DC power distribution cabinet and the main monitoring, and the output end is connected to the power distribution monitoring board or the monitoring expansion board, so as to connect the monitoring output signal of the DC power distribution cabinet to the DC power distribution monitoring and modification component; the input end of the monitoring expansion board is connected to the standard wiring terminal, and the output end is connected to the power distribution monitoring board, so as to expand the number of input ports of the power distribution monitoring board; the power distribution monitoring board is used to collect, process and issue abnormal alarms for the monitoring output signals, and the monitoring output signals include voltage, current, temperature and switching value; the display screen is connected to the power distribution monitoring board.

[0007] The solution of this utility model integrates the monitoring output signal acquisition function of the DC distribution cabinet into an independent component. The monitoring output signal from the DC distribution cabinet is received through an external standard terminal block. The distribution monitoring board is responsible for the acquisition, processing and alarm of the monitoring output signal, and the monitoring expansion board is used to expand the number of input ports of the distribution monitoring board. The DC distribution monitoring modification component provided by this solution can be installed in the DC distribution cabinet of the old power supply, replacing the original monitoring device in the DC distribution cabinet, and monitoring the monitoring output signal in the DC distribution cabinet of the old power supply. The old DC distribution cabinet of the old power supply can be reused without replacing the entire cabinet, solving the problems of high cost, long implementation cycle, and waste of resources caused by the overall replacement plan of the DC distribution cabinet.

[0008] Optionally, the voltage includes the busbar voltage, the switching quantity includes the load fuse status and the battery fuse status; the current includes at least one of the total load current, the branch current and the battery current; wherein, the load fuse status includes the first part load fuse status and the second part load fuse status; the branch current includes the first part branch current and the second part branch current; the monitoring output signal collected by the distribution monitoring board includes the busbar voltage, the total load current, the first part branch current, the temperature, the first part load fuse status, the battery fuse status, and the battery current, and the monitoring output signal collected by the monitoring expansion board includes the second part load fuse status and / or the second part branch current.

[0009] The power distribution monitoring board and monitoring expansion board in the DC power distribution monitoring transformation component provided by the utility model provide a rich variety of monitoring signal types, meeting the signal monitoring requirements of DC power distribution cabinets of various manufacturers on the market, and having strong applicability.

[0010] Optionally, the standard wiring terminal includes a positive and negative voltage input area, a load fuse sampling area, a branch current sampling area, and a battery and total load sampling area; the branch current sampling area includes multiple branch current sampling terminals, and the battery and total load sampling area includes multiple battery current sampling terminals and one total load current sampling terminal; when the branch current sampling terminal and the total load current sampling terminal are connected at the same time, the branch current and the total load current are superimposed; the standard wiring terminal is connected to the monitoring output signal of at least one of the DC distribution cabinets.

[0011] The standard wiring terminals in the DC power distribution monitoring transformation component provided by the present invention are clearly divided and have rich interfaces. Branch current and total load current terminals are provided at the same time, and the branch current and total load current can be superimposed. It is compatible with the current sampling requirements of various manufacturers and can simultaneously connect to the monitoring output signals of multiple DC distribution cabinets, reducing costs and space.

[0012] Optionally, the shell includes an upper cover, a bottom shell, and a top plate; the upper cover, the bottom shell, and the top plate enclose a accommodating cavity with an opening at the bottom, the power distribution monitoring board and the monitoring expansion board are located in the accommodating cavity, and the standard wiring terminals are located outside the accommodating cavity; the display screen is located on the upper part of the upper cover.

[0013] The DC power distribution monitoring transformation component provided by the utility model has a reasonable layout. The power distribution monitoring board and the monitoring expansion board can be effectively protected in the shell. The standard wiring terminals are arranged outside the accommodating cavity, which is convenient for wiring and maintenance. The display screen is arranged on the upper part of the upper cover, which is convenient for viewing the monitoring results in real time.

[0014] Optionally, the DC power distribution monitoring transformation component is installed in a back-mounted manner, and mounting holes are provided on the bottom shell.

[0015] The DC power distribution monitoring transformation component provided by the utility model supports back-stick installation, which is convenient for integration with existing DC power distribution cabinets.

[0016] Optionally, the top plate is detachably fixed to the upper ends of the left and right side walls of the bottom shell, and the top plate is provided with ventilation holes, hanging ears, and wire binding holes.

[0017] The top plate of the DC power distribution monitoring transformation component provided by the utility model is detachable, which is convenient for wiring, installation and maintenance. The ventilation holes are conducive to heat dissipation, the hanging ears are used to fix the upper cover, and the wire binding holes make the cable organization more orderly.

[0018] Optionally, the upper cover is detachable, a structural reinforcement beam is provided in the bottom shell, the upper end of the upper cover is hooked on the hanging ear, and the lower part of the upper cover is fixedly connected to the structural reinforcement beam.

[0019] The upper cover of the DC power distribution monitoring and transformation component provided by the utility model is detachable, with an upper end hooked and a lower end fixed, and is easy to assemble and disassemble.

[0020] Optionally, wiring holes are provided on the left and right side walls of the bottom shell.

[0021] The wiring holes provided in the DC power distribution monitoring and transformation component provided by the utility model are convenient for later upgrading or non-standard wiring.

[0022] Optionally, a display screen mounting frame is provided in the bottom shell, and the display screen is fixedly connected to the display screen mounting frame.

[0023] The display screen mounting frame of the DC power distribution monitoring transformation assembly provided by the utility model is used for fixing the display screen. The display screen is connected to the bottom shell through the display screen mounting frame, and the overall structure is more solid.

[0024] Optionally, the standard wiring terminal includes a pair of RS485 terminals, one end of the RS485 terminal is connected to the main monitoring, and the other end is connected to the power distribution monitoring board.

[0025] The DC power distribution monitoring transformation component provided by the utility model is connected to the main monitoring through the RS485 terminal on the standard wiring terminal, and the monitoring output signal of the DC distribution cabinet is transmitted to the main monitoring in real time. The RS485 terminal is integrated into the standard wiring terminal, the interface is unified, and the overall appearance is more beautiful. In addition, the RS485 interface has strong anti-interference ability and is suitable for long-distance transmission, which facilitates monitoring signal networking.

[0026] The utility model has the following beneficial effects:

[0027] The present utility model adopts a modular design, integrating the monitoring output signal acquisition function of the DC distribution cabinet into an independent component. The component receives the monitoring output signal from the DC distribution cabinet through an external standard terminal block, and the distribution monitoring board is responsible for the acquisition, processing and alarm of the monitoring output signal, and the monitoring expansion board is used to expand the number of input ports of the distribution monitoring board. After the monitoring output signal processing is completed, the result data will be sent to the main monitoring system. The DC distribution monitoring transformation component provided by the present utility model has the characteristics of small size, can be installed in the DC distribution cabinet, has convenient interface connection, and has high versatility and high integration. Using the DC distribution monitoring transformation component provided by the present utility model, it is possible to extremely conveniently complete the replacement of DC distribution monitoring systems from different manufacturers, significantly improving the overall monitoring performance and functions. At the same time, this solution greatly reduces the cost and risk of updating old power supply systems, and reduces the cost expenditure during the power supply update process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural exploded diagram of the DC power distribution monitoring modification component provided in an embodiment of the present utility model.

[0029] Figure 2 This is an assembly diagram of the DC power distribution monitoring modification component provided in an embodiment of the utility model.

[0030] Figure 3 This is a front view of the DC power distribution monitoring modification component provided by an embodiment of the present utility model.

[0031] Figure 4 A side view of the DC power distribution monitoring modification assembly provided in an embodiment of the present utility model.

[0032] Figure 5 This is a top plate structural diagram of the DC power distribution monitoring modification component provided in an embodiment of the present utility model.

[0033] Figure 6 This is a schematic diagram of the installation of the DC power distribution monitoring modification component provided in an embodiment of the present utility model.

[0034] Figure 7 A schematic diagram of the upper cover installation of the DC power distribution monitoring and modification component provided in an embodiment of the present utility model.

[0035] Figure 8 Schematic diagram of the external connection terminals of the power distribution monitoring board of the DC power distribution monitoring transformation component provided in an embodiment of the present utility model.

[0036] Figure 9 Schematic diagram of the external connection terminals of the monitoring expansion board of the DC power distribution monitoring transformation component provided in an embodiment of the present utility model.

[0037] Figure 10 Schematic diagram of the standard terminal area of the DC power distribution monitoring modification component provided in an embodiment of the present utility model.

[0038] Figure 11 This is a terminal definition diagram of the standard wiring terminals of the DC power distribution monitoring transformation component provided in an embodiment of the present utility model.

[0039] Figure 12 This is a schematic diagram of the connection between the DC power distribution monitoring transformation component and the DC power distribution cabinet provided in an embodiment of the present utility model.

[0040] In the attached figure:

[0041] 10. Housing;

[0042] 11. Upper cover; 111. Buckle-fitting portion; 112. Hanging hole;

[0043] 12. Bottom shell;

[0044] 13. Top plate; 131. Ventilation hole; 132. Mounting lug; 133. Wire binding hole;

[0045] 20. Power distribution monitoring board;

[0046] 30. Monitoring expansion board;

[0047] 40. Display screen;

[0048] 50. Standard terminal blocks;

[0049] 60. Display screen mounting bracket;

[0050] 70. Structural reinforcement beams. DETAILED DESCRIPTION

[0051] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings.

[0052] The DC power distribution monitoring modification component provided by the present invention is suitable for the modification of old DC power distribution cabinets and can be used to replace the original monitoring device; at the same time, it is also suitable for supporting use scenarios when newly designing and producing DC power distribution cabinets.

[0053] like Figure 1-4 As shown, an embodiment of the present invention provides a DC power distribution monitoring and modification assembly, which is installed in a DC power distribution cabinet. The assembly includes a housing 10, a power distribution monitoring board 20 and a monitoring expansion board 30 located within the housing 10, a display screen 40 located on the surface of the housing 10, and standard wiring terminals 50 located outside the housing 10. The power distribution monitoring board 20 and the monitoring expansion board 30 are located within the housing for good protection, while the standard wiring terminals 50 are located outside the housing for convenient wiring and maintenance.

[0054] like Figure 1-4 As shown, in a possible embodiment of the present invention, the housing includes an upper cover 11, a bottom shell 12, and a top plate 13; the upper cover 11, the bottom shell 12, and the top plate 13 enclose a receiving cavity with an opening at the bottom, the power distribution monitoring board 20 and the monitoring expansion board 30 are located in the receiving cavity, and the standard wiring terminal 50 is located outside the receiving cavity; the display screen 40 is located on the upper part of the upper cover 11. Figure 1-Figure 4 As shown, the standard wiring terminal 50 is located at the bottom of the power distribution monitoring transformation component, which is convenient for wiring and maintenance.

[0055] In a possible embodiment of the present invention, the installation method of the DC power distribution monitoring and modification component is back-mounted, and the bottom shell is provided with mounting holes. Since the DC power distribution monitoring and modification component of the present invention is mainly used for the modification of the monitoring system of old DC power distribution cabinets, the component needs to be able to be easily installed in the appropriate position of the old power supply, usually inside the cabinet door. Through years of field experience, the length, width and height dimensions of the component are set to 512mmx293mmx68mm, which is compatible with the dimensions of DC power distribution cabinets of various manufacturers. This component can be installed in a back-mounted manner, and can be fixed with screws from the inside to the outside, or from the outside to the inside, which is firm and beautiful. Figure 6 As shown, 8 combination screw fixing holes are reserved on the surface of the bottom shell opposite to the upper cover. The 8 screws are arranged in three rows, and the number of screws in each row from top to bottom is 3, 2, and 3 respectively. Usually only 3 to 5 screws are needed for effective fixation. In addition, rivet fixing positions are also reserved.

[0056] The display screen 40 is connected to the power distribution monitoring board 20 and is used to display the monitoring output signal and set monitoring parameters. In this embodiment of the utility model, the display screen 40 can be a liquid crystal display connected to the power distribution monitoring board 20 via a flat cable. The LCD can intuitively display DC power distribution information and allow parameter settings, facilitating human-computer interaction. The housing 10 is provided with an external expansion port for connecting a large external display.

[0057] like Figure 1 As shown, a display screen mounting bracket 60 is disposed within the bottom housing 12, and the display screen 40 is fixedly connected to the display screen mounting bracket 60. The present invention does not specifically limit the mounting method of the display screen mounting bracket 60 and the display screen 40. In some embodiments of the present invention, the display screen mounting bracket 60 is fixed to the bottom housing 12 by screws, and the display screen 40 is fixed to the display screen mounting bracket 60 by screws. In some embodiments of the present invention, the display screen mounting bracket 60 is fixed to the top plate 13 by screws, and the display screen 40 is fixed to the display screen mounting bracket 60 by screws.

[0058] like Figure 1 As shown, the top plate 13 is detachably fixed to the upper ends of the left and right side walls of the bottom shell 12. The upper ends of the left and right side walls of the bottom shell 12 are each provided with two fixing holes. The top plate 13 is fixed to the left and right side walls of the bottom shell 12 by screws. Figure 5 As shown, the top plate 13 is provided with ventilation holes 131 , hanging ears 132 , and wire binding holes 133 .

[0059] In the embodiment of the present invention, the upper cover 11 is detachable, and a structural reinforcement beam 70 is provided in the bottom shell 12. The upper end of the upper cover 11 is hooked on the hook 132, and the lower part of the upper cover 11 is fixedly connected to the structural reinforcement beam 70. Figure 1 As shown, the upper end of the upper cover 11 is provided with a buckle part 111, and the buckle part 111 is provided with two hanging holes 112 corresponding to the hanging ears 132. When the hanging ears 132 pass through the hanging holes 112, the buckle part 111 is buckled on the top plate 13 under the action of gravity. Figure 7 As shown, there are three screw fixing holes on the upper cover 11 and the structural reinforcement beam 70. After the upper cover 11 is hooked on the top plate 13, the lower part of the upper cover 11 is fixed to the structural reinforcement beam 70 by screws. Usually only one screw is needed for effective fixing, and disassembly and assembly are convenient and quick. Figure 1 As shown, the upper cover 11 is provided with ventilation holes, which form air convection together with the ventilation holes 131 on the top plate 13 to effectively dissipate heat.

[0060] The left and right side walls of the bottom shell 12 are provided with wiring holes to facilitate later upgrades or non-standard wiring.

[0061] The input end of the standard terminal block 50 is connected to the DC distribution cabinet and the main monitoring, and the output end is connected to the distribution monitoring board 20 or the monitoring expansion board 30, for connecting the monitoring output signal of the DC distribution cabinet to the DC distribution monitoring transformation component.

[0062] The input end of the monitoring expansion board 30 is connected to the standard wiring terminal 50 , and the output end is connected to the power distribution monitoring board 20 , so as to expand the number of input ports of the power distribution monitoring board 20 .

[0063] The power distribution monitoring board 20 is used to collect, process, and generate abnormality alarms for the monitoring output signals, transmitting them to the main monitoring system and displaying them on the display screen 40. These monitoring output signals include voltage, current, temperature, and switching values. The power distribution monitoring board independently collects, processes, and generates abnormality alarms for the monitoring output signals, outputting them in real time to the display screen 40 and transmitting them to the main monitoring system. It can also shut down the power supply when necessary.

[0064] In the embodiment of the present invention, the power distribution monitoring board 20 and the monitoring expansion board 30 are connected to the standard wiring terminal 50 via cables. The power distribution monitoring board 20 and the monitoring expansion board 30 are connected via cables, and the port expansion function is realized by a multiplexer-like technology.

[0065] In an embodiment of the present invention, the voltage includes the busbar voltage, the switch quantity includes the load fuse status and the battery fuse status; the current includes at least one of the total load current, the branch current, and the battery current; wherein the load fuse status includes the first portion of the load fuse status and the second portion of the load fuse status; the branch current includes the first portion of the branch current and the second portion of the branch current; the monitoring output signal collected by the power distribution monitoring board 20 includes the busbar voltage, the total load current, the first portion of the branch current, the temperature, the first portion of the load fuse status, the battery fuse status, and the battery current; and the monitoring output signal collected by the monitoring expansion board 30 includes the second portion of the load fuse status and / or the second portion of the branch current. Due to the limited number of interfaces on the power distribution monitoring board 20, it is necessary to work in conjunction with the monitoring expansion board 30 to jointly complete the collection of the load fuse status and the branch current signals. Specifically, the power distribution monitoring board 20 is responsible for collecting the first portion of branch currents and the status of the first portion of load fuses, while the monitoring expansion board 30 is responsible for collecting the second portion of branch currents and the status of the second portion of load fuses. In actual applications, the number of first and second portion branch current and load fuse status signals can be flexibly allocated based on specific needs.

[0066] like Figure 8 The diagram shows the external connection terminals of the power distribution monitoring board 20 of a possible embodiment of the present utility model. Table 1 shows Figure 8 Corresponding terminal definitions, the power distribution monitoring board supports 1 busbar voltage acquisition, 13 branch current acquisitions, 2 temperature acquisitions, 25 load fuse status acquisitions, and 4 battery fuse status acquisitions. Figure 9 The diagram shows the external connection terminals of the monitoring expansion board 30. Table 2 shows Figure 9 Corresponding terminal definitions, the monitoring expansion board supports 20-way load fuse status acquisition and 30-way branch current acquisition.

[0067] Table 1 Definition of terminals on the power distribution monitoring board

[0068]

[0069]

[0070] Table 2 Definition of monitoring expansion board terminals

[0071] terminal definition J1 Shunt sampling interface for measuring branch current J2 Shunt sampling interface for measuring branch current J3 Shunt sampling interface for measuring branch current J4 Output branch fuse detection interface J5 Output branch fuse detection interface J6 Output branch fuse detection interface J7 Power distribution monitoring board interface

[0072] Standard wiring terminals 50 are the sole external interface of the DC power distribution monitoring modification assembly of this utility model. During the DC power distribution cabinet modification process, the monitoring output signals of the DC power distribution cabinet are connected one by one according to the terminal definitions of standard wiring terminals 50. This utility model does not specifically limit the specific type of standard wiring terminals. In a possible embodiment of this utility model, the standard wiring terminals are UK signal terminals. Terminals of other types or functions can be replaced according to actual project needs, such as adding fuse terminals, to expand the scope of application.

[0073] like Figure 10 As shown, in a possible embodiment of the present invention, the standard wiring terminal includes a positive and negative voltage input area, a load fuse sampling area, a branch current sampling area, and a battery and total load sampling area; the branch current sampling area includes multiple branch current sampling terminals, and the battery and total load sampling area includes multiple battery current sampling terminals and one total load current sampling terminal; when the branch current sampling terminal and the total load current sampling terminal are connected at the same time, the branch current and the total load current are superimposed. Among them, the positive and negative voltage input area includes two terminals, the load fuse sampling area, the branch current sampling area, and the battery and total load sampling area include 32, 32, and 16 terminals respectively, supporting a total of 32 load fuse status acquisitions, 16 branch current acquisitions, 4 battery fuse status acquisitions, 1 total load current acquisition, and 4 battery current acquisitions. In actual applications, the number and type of wiring terminals can be modified as needed. The upper end of the standard terminal block is the internal connection area, which is connected to the power distribution monitoring board or monitoring expansion board, and the lower end is the external connection area, which is connected to the monitoring output signal of the DC distribution cabinet or the main monitoring. Figure 11 The terminal definitions for each area are shown. In actual implementation, the terminal definitions are printed or silk-screened on the housing to facilitate on-site comparison and wiring.

[0074] In the embodiment of the present invention, the standard wiring terminal includes both a total load current sampling terminal and a branch load current sampling terminal. When performing current detection, if a current sensor is provided on the main bus, the signal line of the main bus current sensor is connected to the total load current sampling terminal; if the total current sensor only detects the total current of some branches, the signal of the total current sensor can be connected to the total load current sampling terminal, and the signals of other branch current sensors can be connected to the branch load current sampling terminal, and the currents are superimposed inside the power distribution monitoring board to calculate the total current of all branches. Figure 12 As shown, if the Hall effect sensor on the busbar does not collect the current of the first branch from top to bottom, the wiring can be connected by adding the total current to the branch current, and the distribution monitoring board will perform the current summary calculation. This design makes the DC distribution monitoring component of the utility model more compatible.

[0075] In an embodiment of the present invention, in actual application, the standard wiring terminal is connected to the monitoring output signal of at least one of the DC distribution cabinets. Typically, the DC distribution monitoring modification component is installed in one DC distribution cabinet and is only connected to the monitoring output signal of one DC distribution cabinet. Because the standard wiring terminal has a large number of terminals, when necessary, it can also be connected to multiple DC distribution cabinets at the same time. By noting the terminal number of the standard wiring terminal corresponding to each DC distribution cabinet and viewing the signal of the terminal with the corresponding number on the display screen, the purpose of simultaneously monitoring the monitoring output signals of multiple DC distribution cabinets can be achieved, saving cost and space.

[0076] The DC power distribution monitoring and transformation component of the present invention can also be used for monitoring a secondary DC power distribution cabinet. When used in a secondary DC power distribution cabinet, wiring is also performed according to the definition of standard wiring terminals.

[0077] The main monitoring is the superior monitoring of the DC power distribution monitoring. The DC power distribution monitoring transformation component of the present utility model is also used to transmit the sampled and processed monitoring output signal to the main monitoring. In the embodiment of the present utility model, communication with the main monitoring is via RS485. The standard wiring terminal includes a pair of RS485 terminals, one end of the RS485 terminal is connected to the main monitoring, and the other end is connected to the power distribution monitoring board. Figure 10 、 Figure 11 As shown, the RS485 terminals are terminals 15-16 located in the battery and total load sampling area. The DC power distribution monitoring transformation component also includes an address setting module for setting the RS485 communication address.

[0078] The DC power distribution monitoring and transformation component of the present invention further comprises a lightning protection board, which is connected to a -48V auxiliary power supply and a PE terminal.

[0079] When renovating an old DC power distribution cabinet, the DC distribution monitoring component of the present invention can be used to replace the monitoring module of the original DC distribution cabinet, while the other components of the DC distribution cabinet can still be retained, which is conducive to the efficient use of resources and saves costs. The DC distribution monitoring modification component of the present invention can be used in conjunction with the main monitoring. If the original main monitoring is incompatible with the DC distribution monitoring component, the original main monitoring and the original DC distribution monitoring need to be replaced together. If the original DC distribution monitoring system is not connected to the main monitoring, the DC distribution monitoring modification component of the present invention can also communicate with the main monitoring to achieve the purpose of networking the monitoring output signal of the DC distribution cabinet.

[0080] The present utility model adopts a modular design, integrating the monitoring output signal acquisition function of the DC distribution cabinet into an independent component. The component receives the monitoring output signal from the DC distribution cabinet through an external standard terminal block, and the distribution monitoring board is responsible for the acquisition, processing and alarm of the monitoring output signal, and the monitoring expansion board is used to expand the number of input ports of the distribution monitoring board. After the monitoring output signal processing is completed, the result data will be sent to the main monitoring system. The DC distribution monitoring transformation component provided by the present utility model has the characteristics of small size, can be installed in the DC distribution cabinet, has convenient interface connection, and has high versatility and high integration. Using the DC distribution monitoring transformation component provided by the present utility model, it is possible to extremely conveniently complete the replacement of DC distribution monitoring systems from different manufacturers, significantly improving the overall monitoring performance and functions. At the same time, this solution greatly reduces the cost and risk of updating old power supply systems, and reduces the cost expenditure during the power supply update process.

[0081] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms of deformation without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A DC power distribution monitoring and transformation component, characterized in that: The DC power distribution monitoring modification component is installed in a DC power distribution cabinet; the DC power distribution monitoring modification component includes a housing, a power distribution monitoring board and a monitoring expansion board located in the housing, a display screen located on the surface of the housing, and standard wiring terminals located outside the housing; The input end of the standard terminal block is connected to the DC power distribution cabinet and the main monitoring, and the output end is connected to the power distribution monitoring board or the monitoring expansion board, so as to connect the monitoring output signal of the DC power distribution cabinet to the DC power distribution monitoring transformation component; The input end of the monitoring expansion board is connected to the standard wiring terminal, and the output end is connected to the power distribution monitoring board, so as to expand the number of input ports of the power distribution monitoring board; The power distribution monitoring board is used to collect, process and issue abnormal alarms for the monitoring output signals, which include voltage, current, temperature and switching value; The display screen is connected to the power distribution monitoring board.

2. The DC power distribution monitoring and transformation component according to claim 1, characterized in that: The voltage includes the busbar voltage, the switching quantity includes the load fuse status and the battery fuse status; the current includes at least one of the total load current, the branch current and the battery current; wherein, the load fuse status includes the first part load fuse status and the second part load fuse status; the branch current includes the first part branch current and the second part branch current; the monitoring output signal collected by the distribution monitoring board includes the busbar voltage, the total load current, the first part branch current, the temperature, the first part load fuse status, the battery fuse status, and the battery current, and the monitoring output signal collected by the monitoring expansion board includes the second part load fuse status and / or the second part branch current.

3. The DC power distribution monitoring and transformation component according to claim 1, characterized in that: The standard wiring terminal includes a positive and negative voltage input area, a load fuse sampling area, a branch current sampling area, and a battery and total load sampling area; the branch current sampling area includes multiple branch current sampling terminals, and the battery and total load sampling area includes multiple battery current sampling terminals and one total load current sampling terminal; When the branch current sampling terminal and the total load current sampling terminal are connected at the same time, the branch current and the total load current are superimposed; the standard wiring terminal is connected to the monitoring output signal of at least one of the DC distribution cabinets.

4. The DC power distribution monitoring transformation component according to any one of claims 1 to 3, characterized in that: The shell includes an upper cover, a bottom shell, and a top plate; the upper cover, the bottom shell, and the top plate enclose a accommodating cavity with an opening at the bottom, the power distribution monitoring board and the monitoring expansion board are located in the accommodating cavity, and the standard wiring terminals are located outside the accommodating cavity; the display screen is located on the upper part of the upper cover.

5. The DC power distribution monitoring and transformation component according to claim 4, characterized in that: The DC power distribution monitoring transformation component is installed in a back-mounted manner, and the bottom shell is provided with mounting holes.

6. The DC power distribution monitoring and transformation component according to claim 4, characterized in that: The top plate is detachably fixed to the upper ends of the left and right side walls of the bottom shell, and is provided with ventilation holes, hanging ears, and wire binding holes.

7. The DC power distribution monitoring and transformation component according to claim 6, characterized in that: The upper cover is detachable, a structural reinforcement beam is provided in the bottom shell, the upper end of the upper cover is hooked on the hanging ear, and the lower part of the upper cover is fixedly connected to the structural reinforcement beam.

8. The DC power distribution monitoring and transformation component according to claim 4, characterized in that: The left and right side walls of the bottom shell are provided with wiring holes.

9. The DC power distribution monitoring and transformation component according to claim 4, characterized in that: A display screen mounting frame is provided in the bottom shell, and the display screen is fixedly connected to the display screen mounting frame.

10. The DC power distribution monitoring and transformation component according to claim 1, characterized in that: The standard wiring terminal includes a pair of RS485 terminals, one end of the RS485 terminal is connected to the main monitoring, and the other end is connected to the power distribution monitoring board.

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