Integrated dc transient screen

Abstract

The application relates to the technical field of power equipment, and discloses an integrated DC transition screen, which comprises a cabinet body, a rectifier module, multiple integrated terminal circuit breakers and a wiring assembly. The output end of the rectifier module is connected with a DC busbar. The rectifier module is used for rectifying AC power to convert the AC power into DC power. The multiple integrated terminal circuit breakers are arranged in parallel on the DC busbar. The wiring assembly is electrically connected with the multiple integrated terminal circuit breakers. The wiring assembly is used for forming multiple load output interfaces which can be quickly disassembled. The rectifier module, the multiple integrated terminal circuit breakers and the wiring assembly are integrated in the cabinet body. External AC power is input into the rectifier module through an AC power end on the back of the cabinet body. After being rectified into DC power, the DC power is transmitted to the DC busbar and then output to the outside through the wiring assembly. The integrated cabinet body can complete transition power supply, the number of on-site devices is reduced, the equipment occupation area is reduced, and the overall construction period is shortened.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and specifically to an integrated DC transition screen. Background Technology

[0002] DC systems are an important power source for secondary equipment in substations, providing operating power for relay protection, measurement and control devices, signal circuits, circuit breaker operating circuits, and other equipment. They are regarded as the neurons of electrical equipment, and the reliability of DC system operation is directly related to the overall safe and stable operation of the substation.

[0003] Currently, substation DC systems generally adopt a split-screen independent panel scheme, with charging panels, feeder panels, and distribution panels being independent cabinets that respectively undertake AC rectification and charging, DC load feed-out, and load secondary distribution functions.

[0004] When carrying out DC system upgrade work, two to three independent cabinets need to be moved to participate in the transition construction. This not only requires a large investment of manpower and a large site area, but also requires multiple rounds of cabinet positioning, cable wiring and system debugging, resulting in a longer overall construction period. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of long overall construction cycles when using a split-screen, independent panel approach for DC system retrofitting. Therefore, it provides an integrated DC transition panel.

[0006] The technical solution of the present invention is: an integrated DC transition panel, comprising: a cabinet;

[0007] A rectifier module, the output terminal of which is connected to a DC bus, is used to rectify the incoming AC power into DC power output;

[0008] Multiple integrated terminal circuit breakers are connected in parallel on the DC busbar;

[0009] A wiring assembly electrically connected to multiple integrated terminal circuit breakers, the wiring assembly being used to form multiple quick-release load output interfaces;

[0010] The rectifier module, the multiple integrated terminal circuit breakers, and the wiring assembly are all integrated into the cabinet.

[0011] Furthermore, the AC power supply terminal of the rectifier module is located at the back of the cabinet, and the AC power supply terminal is used to connect to an external AC power source.

[0012] The output terminals of the multiple integrated terminal circuit breakers are electrically connected to electronic fuse terminals, which are used for overload protection of the feeder branch.

[0013] The wiring assembly includes a terminal block, a pull-out rail, and pluggable terminals. The input end of the terminal block is electrically connected to the output end of the electronic fuse terminal. The pull-out rail is slidably mounted on the cabinet. The pluggable terminals are fixedly mounted on the pull-out rail and electrically connected to the terminal block, together forming a multi-channel load output interface that can be quickly disassembled and assembled.

[0014] Furthermore, a DC battery power supply terminal is installed on the back of the cabinet, and a frame is rotatably installed on the side of the cabinet. A storage battery is installed on the frame, and the storage battery is electrically connected to the DC busbar through the DC battery power supply terminal. The output terminal of the storage battery and the output terminal of the rectifier module are connected in parallel.

[0015] Furthermore, it also includes a battery ammeter, which is connected in series in the circuit between the battery and the DC bus to collect the battery circuit current.

[0016] Furthermore, the cabinet is equipped with monitoring components, including a DC voltmeter, a DC ammeter, and an AC voltmeter. The DC voltmeter is connected in parallel to the power supply circuit from the rectifier module output to the DC busbar, the DC ammeter is connected in series to the power supply circuit from the rectifier module output to the DC busbar, and the AC voltmeter is connected in parallel to the input circuit of the AC power supply terminal.

[0017] Furthermore, it also includes an AC circuit breaker and a DC circuit breaker, wherein the AC circuit breaker is connected in series between the AC power supply terminal and the rectifier module, and the DC circuit breaker is connected to the feeder branch of the DC busbar.

[0018] Furthermore, it also includes tracks, a first fixing pin, and an adsorption frame. The tracks are adjustablely mounted on the lower part of the cabinet via the first fixing pin, and the adsorption frame is mounted on the cabinet. The adsorption frame, in conjunction with the first fixing pin, enables the tracks to be stored, fixed, released, and deployed.

[0019] Furthermore, the cabinet is equipped with push-pull handles, which include vertical handles and angled handles. Both the vertical handles and the angled handles are installed on the side of the cabinet. The vertical handles are used for flat handling operations, and the angled handles are used in conjunction with the unfolded tracks for moving items up and down stairs.

[0020] Furthermore, pulley devices are installed at the four corners of the bottom of the cabinet. Each pulley device includes a pulley body, a second fixing pin, and a pulley limiter. The pulley body is installed on the cabinet via the second fixing pin, and the pulley limiter is used to lock the rotation of the pulley body.

[0021] Furthermore, a heat dissipation grille is provided on the upper side of the cabinet.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. The integrated DC transition panel provided by this invention allows external AC power to be input into a rectifier module at the AC power terminal on the back of the cabinet. After rectification into DC power, it is delivered to the DC busbar. An integrated terminal circuit breaker connected in parallel to the busbar controls the on / off of each branch. The current then passes through an electronic fuse terminal for overload protection. Subsequently, DC power is output to the outside via a wiring assembly to power secondary loads. The rectification, branch protection, and multi-output functions are all integrated into one cabinet. Transition power supply can be completed using only a single cabinet, reducing the number of on-site devices, reducing equipment footprint, and shortening the overall construction period. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 yes Figure 1 Rear view;

[0026] Figure 3 yes Figure 1 The right view;

[0027] Figure 4 yes Figure 1 The left view.

[0028] In the diagram: 1. Cabinet; 2. Rectifier module; 3. AC power supply terminal; 4. Electronic fuse terminal; 5. Terminal block; 6. Pull-out rail; 7. Plug-in terminal; 8. DC battery power supply terminal; 9. Frame; 10. Battery ammeter; 11. DC voltmeter; 12. DC ammeter; 13. AC voltmeter; 14. AC circuit breaker; 15. DC circuit breaker; 16. Track; 17. First fixing pin; 18. Adsorption rack; 19. Vertical handle; 20. Angled handle; 21. Pulley body; 22. Heat dissipation grille. Detailed Implementation

[0029] Specific implementation method one: Combining Figures 1 to 4 This embodiment describes a cabinet 1, a rectifier module 2, multiple integrated terminal circuit breakers, and a wiring assembly. The output of the rectifier module 2 is connected to a DC busbar. The rectifier module 2 is used to rectify the incoming AC power into DC power output. Multiple integrated terminal circuit breakers are connected in parallel on the DC busbar. The wiring assembly is electrically connected to the multiple integrated terminal circuit breakers. The wiring assembly is used to form multiple load output interfaces that can be quickly installed and removed. The rectifier module 2, multiple integrated terminal circuit breakers, and wiring assembly are all integrated into the cabinet 1.

[0030] In this embodiment, the integrated DC transition panel receives external AC power from the AC power terminal 3 on the back of the cabinet 1 and inputs it into the rectifier module 2. After rectification into DC power, it is delivered to the DC busbar. The integrated terminal circuit breaker connected in parallel to the busbar controls the on / off of each branch. The current is then output as DC power through the wiring assembly to power the secondary load. The rectification, branch protection, and multi-output functions are all integrated into one cabinet 1. Transition power supply can be completed using only one cabinet 1, reducing the number of on-site devices, reducing the equipment footprint, and shortening the overall construction period.

[0031] Specific Implementation Method Two: Combining Figures 1 to 4 This embodiment differs from Specific Embodiment 1 in that the AC power supply terminal 3 of the rectifier module 2 is located on the back of the cabinet 1. The AC power supply terminal 3 is used to connect to an external AC power source. The output terminals of multiple integrated terminal circuit breakers are electrically connected to electronic fuse terminals 4, which are used for overload protection of the feeder branches. The wiring assembly includes a terminal block 5, a pull-out rail 6, and pluggable terminals 7. The input terminal of the terminal block 5 is electrically connected to the output terminal of the electronic fuse terminals 4. The pull-out rail 6 is slidably mounted on the cabinet 1, and the pluggable terminals 7 are fixedly mounted on the pull-out rail 6 and electrically connected to the terminal block 5, together forming multiple quickly detachable load output interfaces. Other components and connections are the same as in Specific Embodiment 1.

[0032] Specific implementation method three: Combining Figures 1 to 4 This embodiment differs from Specific Embodiment 1 in that a DC battery power supply terminal 8 is installed on the back of the cabinet 1, and a frame 9 is rotatably mounted on the side of the cabinet 1. A storage battery is installed on the frame 9, and the battery is electrically connected to the DC busbar via the DC battery power supply terminal 8. The output terminal of the battery and the output terminal of the rectifier module 2 are connected in parallel. The battery serves as a backup DC power source; when an external AC input interruption causes the rectifier module 2 to stop outputting, the battery can continuously supply power to the DC busbar, ensuring a stable power supply to the load. Other components and connections are the same as in Specific Embodiment 1.

[0033] Specific implementation method four: Combination Figures 1 to 4 This embodiment differs from Specific Embodiment Three in that it also includes a battery ammeter 10. The battery ammeter 10 is connected in series in the circuit between the battery and the DC busbar to collect the battery circuit current. The battery ammeter 10 can collect the battery circuit charging and discharging current in real time, allowing staff to intuitively read the battery charging and discharging current values, facilitating on-site maintenance personnel in determining the battery's operating status. Other components and connections are the same as in Specific Embodiment Three.

[0034] Specific Implementation Method Five: Combining Figures 1 to 4This embodiment differs from Specific Embodiment 1 in that it incorporates monitoring components embedded in the cabinet 1, including a DC voltmeter 11, a DC ammeter 12, and an AC voltmeter 13. The DC voltmeter 11 is connected in parallel to the power supply circuit from the rectifier module 2 output to the DC busbar. The DC ammeter 12 is connected in series to the power supply circuit from the rectifier module 2 output to the DC busbar. The AC voltmeter 13 is connected in parallel to the input circuit of the AC power supply terminal 3. The AC voltmeter 13 monitors the external AC input voltage in real time, the DC voltmeter 11 monitors the DC busbar output voltage, and the DC ammeter 12 collects the output operating current of the rectifier module 2. These multiple meters allow for a direct understanding of key electrical parameters on both the AC and DC sides, facilitating quick assessment of the power supply status of the cabinet by on-site personnel. Other components and connections are the same as in Specific Embodiment 1.

[0035] Specific Implementation Method Six: Combination Figures 1 to 4 This embodiment differs from specific embodiment one in that it also includes an AC circuit breaker 14 and a DC circuit breaker 15. The AC circuit breaker 14 is connected in series between the AC power supply terminal 3 and the rectifier module 2. The DC circuit breaker 15 is connected to the feeder branch of the DC busbar. When an overload fault occurs on the AC input side, the AC circuit breaker 14 can quickly disconnect the AC input. The DC circuit breaker 15 and the electronic fuse terminal 4 form a dual protection layer, further improving the fault isolation capability of the feeder branch and preventing a single feeder branch fault from affecting the entire transition panel. Other components and connections are the same as in specific embodiment one.

[0036] Specific implementation method seven: Combination Figures 1 to 4 This embodiment differs from specific embodiment one in that it also includes a track 16, a first fixing pin 17, and a suction cup 18. The track 16 is adjustablely mounted to the lower part of the cabinet 1 via the first fixing pin 17. The suction cup 18 is mounted on the cabinet 1. The suction cup 18, in conjunction with the first fixing pin 17, enables the track 16 to be stored, fixed, and deployed. The track 16's angle is adjustable via the first fixing pin 17. In the stored state, the track 16 fits snugly against the suction cup 18, without occupying additional space. When deployed, the track 16 can serve as a stair-climbing mechanism, solving the problem of difficulty in moving the cabinet upstairs. Other components and connections are the same as in specific embodiment one.

[0037] Specific implementation method eight: Combination Figures 1 to 4 This embodiment differs from specific embodiment seven in that it has a push-pull handle installed on the cabinet 1. The push-pull handle includes a vertical handle 19 and an angled handle 20. Both the vertical handle 19 and the angled handle 20 are installed on the side of the cabinet 1. The vertical handle 19 is used for horizontal handling operations, and the angled handle 20, in conjunction with the unfolded track 16, is used for handling up and down stairs. Other components and connections are the same as in specific embodiment seven.

[0038] Specific Implementation Method Nine: Combining Figures 1 to 4 This embodiment differs from Specific Embodiment 1 in that pulley devices are installed at the four corners of the bottom of the cabinet 1. Each pulley device includes a pulley body 21, a second fixing pin, and a pulley limiter. The pulley body 21 is mounted on the cabinet 1 via the second fixing pin. The pulley limiter locks the rotation of the pulley body 21. When the panel is moved to the designated working position, the pulley is locked to prevent the panel from shifting or sliding under external force, ensuring the stability and reliability of the panel's position during operation. All four pulley bodies 21 are omnidirectional pulleys, allowing for flexible adjustment of the panel's placement without repeatedly turning the cabinet 1, reducing the difficulty of positioning and adjustment within the limited space of a substation panel and improving on-site layout efficiency. Other components and connections are the same as in Specific Embodiment 1.

[0039] Specific Implementation Method Ten: Combining Figures 1 to 4 This embodiment differs from specific embodiment one in that a heat dissipation grille 22 is provided on the upper side of the cabinet 1. The heat dissipation grille 22 provides a ventilation and heat dissipation channel for the electrical components inside the cabinet, promotes air convection inside and outside the cabinet 1, and promptly removes the heat accumulated inside the cabinet, preventing the components from aging prematurely due to excessively high temperatures inside the cabinet. Other components and connections are the same as in any of specific embodiments one through nine.

[0040] The scope of this invention is not limited to the above-described embodiments; a combination of one or more specific embodiments can also achieve the purpose of the invention.

Claims

1. An integrated DC-DC transition screen, characterized in that, include: Cabinet (1); A rectifier module (2) is provided, the output of which is connected to a DC busbar. The rectifier module (2) is used to rectify the AC power into DC power output. Multiple integrated terminal circuit breakers are connected in parallel on the DC busbar; A wiring assembly electrically connected to multiple integrated terminal circuit breakers, the wiring assembly being used to form multiple quick-release load output interfaces; The rectifier module (2), the multiple integrated terminal circuit breakers, and the wiring assembly are all integrated within the cabinet (1).

2. The integrated DC transition screen according to claim 1, characterized in that, The AC power terminal (3) of the rectifier module (2) is located on the back of the cabinet (1), and the AC power terminal (3) is used to connect to an external AC power source. The output terminals of the multiple integrated terminal circuit breakers are electrically connected to electronic fuse terminals (4), which are used for overload protection of the feeder branch. The wiring assembly includes a terminal block (5), a pull-out rail (6), and a pluggable terminal (7). The input end of the terminal block (5) is electrically connected to the output end of the electronic fuse terminal (4). The pull-out rail (6) is slidably mounted on the cabinet (1). The pluggable terminal (7) is fixedly mounted on the pull-out rail (6) and electrically connected to the terminal block (5), together forming a multi-channel load output interface that can be quickly disassembled and assembled.

3. The integrated DC transition screen according to claim 1, characterized in that, A DC battery power supply terminal (8) is installed on the back of the cabinet (1). A frame (9) is rotatably installed on the side of the cabinet (1). A storage battery is installed on the frame (9). The storage battery is electrically connected to the DC busbar through the DC battery power supply terminal (8). The output terminal of the storage battery and the output terminal of the rectifier module (2) are connected in parallel.

4. An integrated DC transition screen according to claim 3, characterized in that, It also includes a battery ammeter (10), which is connected in series in the circuit between the battery and the DC busbar to collect the battery circuit current.

5. An integrated DC transition screen according to claim 1, characterized in that, The cabinet (1) is equipped with monitoring components, including a DC voltmeter (11), a DC ammeter (12), and an AC voltmeter (13). The DC voltmeter (11) is connected in parallel to the power supply circuit from the rectifier module (2) to the DC busbar. The DC ammeter (12) is connected in series to the power supply circuit from the rectifier module (2) to the DC busbar. The AC voltmeter (13) is connected in parallel to the input circuit of the AC power supply terminal (3).

6. An integrated DC transition screen according to claim 1, characterized in that, It also includes an AC circuit breaker (14) and a DC circuit breaker (15), wherein the AC circuit breaker (14) is connected in series between the AC power supply terminal (3) and the rectifier module (2), and the DC circuit breaker (15) is connected to the feeder branch of the DC bus.

7. An integrated DC transition screen according to claim 1, characterized in that, It also includes a track (16), a first fixing pin (17), and an adsorption frame (18). The track (16) is adjustablely installed on the lower part of the cabinet (1) via the first fixing pin (17). The adsorption frame (18) is installed on the cabinet (1). The adsorption frame (18) works in conjunction with the first fixing pin (17) to realize the storage, fixing, release, and unfolding of the track (16).

8. An integrated DC transition screen according to claim 7, characterized in that, The cabinet (1) is equipped with a push-pull handle, which includes a vertical handle (19) and an angled handle (20). The vertical handle (19) and the angled handle (20) are both installed on the side of the cabinet (1). The vertical handle (19) is used for flat handling operations, and the angled handle (20) is used in conjunction with the unfolded track (16) for moving up and down stairs.

9. An integrated DC transition screen according to claim 1, characterized in that, The cabinet (1) is equipped with pulley devices at the four corners of its bottom. The pulley devices include pulley bodies (21), second fixing pins, and pulley limiters. The pulley bodies (21) are installed on the cabinet (1) by the second fixing pins, and the pulley limiters are used to lock the rotation of the pulley bodies (21).

10. An integrated DC transition screen according to any one of claims 1-9, characterized in that, The cabinet (1) has a heat dissipation grille (22) on its upper side.

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