Low-voltage fixed compensation module and compensation module group
By designing multiple sets of parallel capacitor banks and compensation components in the low-voltage fixed compensation module, two sets of parallel circuits are constructed, which solves the problem that traditional modules cannot meet the needs of complex power systems, realizes module integration and capacity improvement, adapts to various power distribution environments, and optimizes power quality and operating efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-31
AI Technical Summary
The single compensation circuit design of traditional low-voltage fixed compensation modules cannot meet the diverse needs of complex power systems, making it difficult to effectively solve power quality problems.
Design a low-voltage fixed compensation module, which includes multiple parallel capacitor banks. Each capacitor bank has an independent switching switch. Two parallel reactive power compensation circuits are constructed through mounting bases and compensation components. Flexible reactive power compensation adjustment is achieved by combining detachable connections and control ports.
The integration and miniaturization of the compensation module have been achieved, which has increased the compensation capacity. It can select single or double circuits for reactive power compensation according to the needs, adapt to various low-voltage power distribution environments, and improve power quality and system operating efficiency.
Smart Images
Figure CN224068364U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power systems, and in particular to a low-voltage fixed compensation module and compensation unit. Background Technology
[0002] In low-voltage power distribution systems, a low power factor is a common power quality problem, primarily caused by the large amount of reactive power consumed by inductive loads (such as motors and transformers). This not only leads to a decrease in power system operating efficiency but also causes a series of negative impacts, including increased line losses, voltage fluctuations, and equipment overload. To address this issue, low-voltage fixed compensation modules have emerged, which provide capacitive reactive power to the system through parallel capacitors to compensate for the reactive power demand of inductive loads, thereby improving the power factor and power quality.
[0003] Traditional low-voltage fixed compensation modules typically employ a single compensation circuit design, meaning they consist of only one capacitor bank connected directly in parallel to the system bus via capacitors of fixed capacity. This design offered advantages such as simple structure and low cost in early applications, but its limitations have become increasingly apparent as power system load characteristics have become more complex and user demands for power quality have increased. Utility Model Content
[0004] This application provides a low-voltage fixed compensation module and compensation unit, which aims to solve the problem that the single compensation circuit of the existing compensation module has limitations and cannot meet user needs.
[0005] To achieve the above objectives, this application proposes a low-voltage fixed compensation module. This low-voltage fixed compensation module includes: multiple parallel capacitor banks, each capacitor bank having an independent switching switch.
[0006] The mounting base includes a base plate and a mounting isolation plate vertically disposed on the base plate;
[0007] The compensation assembly includes a vertical busbar, two fuse-type disconnect switches, and thyristors, reactors, and capacitors that are sequentially electrically connected to the two fuse-type disconnect switches.
[0008] The vertical busbar is installed on one side of the mounting isolation plate, two fuse-type disconnect switches are connected to the vertical busbar at an interval, the thyristor is disposed on the same side of the mounting isolation plate as the fuse-type disconnect switches, and the reactor and the capacitor are located on the other side of the mounting isolation plate and disposed on the base plate.
[0009] In some embodiments, the mounting isolation plate is provided with perforations corresponding to each of the thyristors, so that the thyristors can be connected to the reactor through the perforated traces.
[0010] In some embodiments, a control port is provided on the mounting isolation plate corresponding to each of the thyristors. The control port is used to connect the control circuit to the thyristor to control the on / off state of the thyristor.
[0011] In some embodiments, the vertical busbar and the mounting isolation plate, the fuse-type disconnect switch and the vertical busbar, the thyristor and the mounting isolation plate, the control port and the mounting isolation plate, the reactor and the base plate, and the capacitor and the base plate are all detachably connected.
[0012] In some embodiments, the reactor is provided with a first locking part, and a plurality of second locking parts matching the first locking part are arrayed on the base plate. The second locking parts and the first locking parts are connected by a connector to lock or unlock the relative position between the reactor and the base plate.
[0013] In some embodiments, a plurality of heat dissipation holes are provided on the base plate around the reactor and the capacitor.
[0014] In some embodiments, handles are provided at both ends of the base plate.
[0015] This application also provides a low-voltage fixed compensation module, which includes a frame and the low-voltage fixed compensation modules as described above. The number of low-voltage fixed compensation modules is set to a plurality of them, and the plurality of low-voltage fixed compensation modules are arranged vertically at intervals on the frame; and the vertical busbars of each adjacent low-voltage fixed compensation module are electrically connected.
[0016] In some embodiments, the base plate has a clearance hole at the lower end corresponding to the vertical busbar; the low-voltage fixed compensation module further includes a lap copper busbar, which passes through the clearance hole to connect to the vertical busbar on the adjacent low-voltage fixed compensation module.
[0017] In some embodiments, the frame is provided with support beams spaced apart in the vertical direction for supporting the low-voltage fixed compensation module. The support beams include a first sub-beam and a second sub-beam arranged opposite each other in the horizontal direction. The bottom sides of the low-voltage fixed compensation module are respectively supported on the first sub-beam and the second sub-beam and locked.
[0018] This application proposes a low-voltage fixed compensation module. The module includes a mounting base and compensation components. The mounting base includes a base plate and a vertically mounted isolation plate on the base plate. The compensation components include a vertical busbar, two fuse-type disconnect switches, and thyristors, reactors, and capacitors sequentially connected to the two fuse-type disconnect switches. The vertical busbar is mounted on one side of the isolation plate, the two fuse-type disconnect switches are connected to the vertical busbar at an interval, the thyristors are mounted on the same side of the isolation plate as the fuse-type disconnect switches, and the reactors and capacitors are located on the other side of the isolation plate and mounted on the base plate. This application's technical solution, through the structural design of the mounting base and the positional layout of the compensation components, allows two sets of reactive power compensation circuits to be connected in parallel on the same mounting base. This not only achieves integration of the compensation module, reducing its size, but also increases the compensation capacity of the module, enabling users to control one or two sets of compensation circuits for reactive power compensation based on actual compensation needs, making it suitable for various low-voltage power distribution environments. This application also provides a low-voltage fixed compensation module. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0020] Figure 1 This is a schematic diagram of the structure of a low-voltage fixed compensation module according to an embodiment of this application;
[0021] Figure 2 for Figure 1 Schematic diagram of the middle base;
[0022] Figure 3 This is a schematic diagram of the structure of a low-voltage fixed compensation module according to an embodiment of this application. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0024] It should be noted that, unless otherwise stated or limited, all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.
[0025] It should also be noted that, unless otherwise stated or limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be an intervening element present. When an element is referred to as "connected to" another element, it may be directly connected to the other element or there may be an intervening element present.
[0026] Furthermore, unless otherwise stated or limited, the descriptions involving "first," "second," etc., in this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.
[0027] See Figure 1 and Figure 2 As shown, this application proposes a low-voltage fixed compensation module 100. The low-voltage fixed compensation module 100 includes a mounting base 10 and a compensation component 20. The mounting base 10 provides mechanical support to ensure the assembly of the compensation component 20. The mounting base 10 includes a base plate 11 and a mounting isolation plate 12 vertically disposed on the base plate 11. The compensation component 20 includes a vertical busbar 21, two fuse-type disconnect switches 22, and thyristors 23, reactors 24, and capacitors 25 that are sequentially electrically connected to the two fuse-type disconnect switches 22. The vertical busbar 21 is used to connect to the external power grid as a power supply channel. When the two fuse-type disconnect switches 22 are connected to the vertical busbar 21 at vertical intervals, the thyristors 23, reactors 24, and capacitors 25 connected to each fuse-type disconnect switch 22 form two sets of parallel reactive power compensation circuits. In each circuit, the fuse-type disconnect switch 22 is used to provide overload and short-circuit protection, the thyristor 23 realizes contactless switching and controls the connection and disconnection of the capacitor 25, the reactor 24 suppresses the inrush current when the capacitor 25 is closed, and the capacitor 25 provides reactive power compensation and improves the power factor.
[0028] Furthermore, in the technical solution of this application, based on the setting of two sets of compensation circuits on the compensation module, the user can choose to operate one or both sets of compensation circuits and flexibly adjust the reactive power compensation amount. For example, if the two sets of compensation circuits use components of the same specification, and the output capacity of one set of compensation circuits is 25kvar, then the simultaneous output capacity of the two sets of compensation circuits can reach 50kvar.
[0029] In the specific configuration, the thyristor 23 and the fuse-type disconnect switch 22 are mounted on the same side of the mounting isolation plate 12, while the reactor 24 and capacitor 25 are located on the other side of the mounting isolation plate 12 and mounted on the base plate 11. This layout optimizes space utilization, making the module more compact and smaller in size. Understandably, the overall installation area of the compensation component 20 does not exceed the area enclosed by the base plate 11 and the mounting isolation plate 12, ensuring a compact structure and ease of maintenance. Figure 1 As shown, the mounting isolation plate 12 is not located at the edge of the base plate 11, so that the fuse-type disconnect switch 22 and thyristor 23 mounted on the mounting isolation plate 12 do not exceed the edge of the base plate 11, and the reactor 24 and capacitor 25 do not exceed the height of the mounting isolation plate 12, thereby avoiding potential safety risks caused by exposed components.
[0030] See Figure 1 and Figure 2 As shown, in some embodiments, the mounting isolation plate 12 is provided with through holes 121 corresponding to each thyristor 23 so that the thyristor 23 can be connected to the reactor 24 through the through holes 121.
[0031] In this embodiment, perforation 121 refers to a pre-designed hole on the mounting isolation plate 12, used to guide the path of wires or cables. Based on the two sets of compensation circuits, two perforations 121 are provided, and their positions facilitate the connection of the thyristor 23 and the reactor 24. Wiring along a predetermined path reduces wiring clutter and crossings, improves wiring efficiency and aesthetics, and facilitates maintenance and repair. When components need to be replaced or repaired, the relevant wires can be more easily identified.
[0032] See Figure 1 As shown, in some embodiments, the mounting isolation plate 12 is provided with a control port 26 corresponding to each thyristor 23. The control port 26 is used to connect the control circuit and the thyristor 23 to control the on and off of the thyristor 23.
[0033] In this embodiment, by setting control port 26, the switching control of capacitor 25 is achieved according to system requirements, ensuring precise reactive power compensation adjustment. Specifically, control port 26 receives switching commands from the control circuit, such as connection and disconnection commands. Control port 26 parses the received commands and drives thyristor 23 to perform the corresponding switching operation, ensuring that capacitor 25 is connected or disconnected as needed, thereby precisely adjusting the reactive power compensation amount, optimizing the system power factor, and improving overall operating efficiency. The setting of control port 26 simplifies the control logic and enhances the reliability and response speed of the system.
[0034] In some embodiments, the vertical busbar 21 and the mounting isolation plate 12, the fuse-type disconnect switch 22 and the vertical busbar 21, the thyristor 23 and the mounting isolation plate 12, the control port 26 and the mounting isolation plate 12, the reactor 24 and the base plate 11, and the capacitor 25 and the base plate 11 are all detachably connected.
[0035] In this embodiment, the detachable connection allows for quick replacement of components in the compensation assembly 20 in case of failure, reducing maintenance time and costs, and improving system availability and maintenance efficiency. Simultaneously, the detachable design enhances compatibility, supporting component replacement for lamps of different capacities and voltages, such as replacing capacitors 25 or reactors 24 with different capacities, flexibly addressing various operating conditions.
[0036] Furthermore, the reactor 24 is provided with a first locking part, and the base plate 11 has an array of several second locking parts 112 that match the first locking part. The second locking parts 112 are connected to the first locking part by a connector to lock or unlock the relative position between the reactor 24 and the base plate 11. The first locking part and the second locking parts 112 adopt a one-to-many design, allowing a single reactor 24 to be flexibly installed in multiple positions, or to adaptably install reactors 24 of different sizes and models, improving installation flexibility and convenience. For example, the first locking part and the second locking part 112 are provided with locking holes, and the two are connected by a threaded connector to achieve quick locking and unlocking.
[0037] See Figure 2 As shown, in some embodiments, the base plate 11 has several heat dissipation holes 113 around the reactor 24 and capacitor 25. The heat dissipation of the reactor 24, capacitor 25 and other heat-generating components can be accelerated through natural convection or forced air cooling, effectively reducing the temperature rise and ensuring the long-term stable operation of the components.
[0038] In some embodiments, handles 114 are provided on both sides of the base plate 11. This facilitates the user's transfer of the low-voltage fixed compensation module 100. The handles 114 may be ergonomically designed for easy gripping and carrying, reducing operator fatigue. Furthermore, anti-slip textures may be provided on the handles 114 to increase grip stability and reduce the risk of accidental slippage.
[0039] See Figure 3 As shown, this application also proposes a low-voltage fixed compensation module 200, which includes a frame 210 and the low-voltage fixed compensation modules 100 as described above. The number of low-voltage fixed compensation modules 100 is set to several, and the several low-voltage fixed compensation modules 100 are arranged vertically at intervals on the frame 210; and the vertical busbars 21 in each adjacent low-voltage fixed compensation module 100 are connected to achieve electrical connection.
[0040] In this low-voltage fixed compensation module 200, the vertical busbars 21 of each low-voltage fixed compensation module 100 are connected to form a unified power supply system for all modules, ensuring balanced current distribution. The number of low-voltage fixed compensation modules 100 is dynamically configured according to the compensation capacity. For example, if the compensation capacity is 200kVar, four 50kVar modules are required; if a compensation capacity of 125kVar is required, two 50kVar modules and one 25kVar module can be used. The 25kVar module can be detachably configured with only one compensation circuit on the module. The specific configuration can be tailored to the user's actual needs, offering strong scalability and flexible module combinations.
[0041] See Figure 2 and Figure 3 As shown, in some embodiments, the base plate 11 has a clearance hole 111 at the lower end corresponding to the vertical busbar 21; the low-voltage fixed compensation module also includes a lap copper busbar 220, which passes through the clearance hole 111 to connect the vertical busbar 21 on the adjacent low-voltage fixed compensation module 100. While ensuring good electrical connection through the lap copper busbar 220, the lap copper busbar 220 passing through the clearance hole 111 can reduce the installation distance between modules, achieve a compact layout, and be suitable for space-constrained frames 210.
[0042] See Figure 3As shown, in some embodiments, the frame 210 is vertically spaced with support beams 230 for supporting the low-voltage fixed compensation module 100. Each support beam 230 includes a first sub-beam and a second sub-beam arranged horizontally opposite each other. The bottom sides of the low-voltage fixed compensation module 100 are respectively supported and locked onto the first and second sub-beams. Furthermore, during the installation of the low-voltage fixed compensation module 100 on the frame 210, the low-voltage fixed compensation module 100 can be smoothly slid into the frame 210 from the side, supported by the first and second sub-beams, ensuring a stable and convenient installation. After sliding into place, it can be locked using locking screws.
[0043] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.
Claims
1. A low voltage fixed compensation module, characterized by, The utility model relates to a low-voltage fixed compensation module, comprising: a mounting base comprising a bottom plate and a mounting isolation plate vertically arranged on the bottom plate; a compensation assembly comprising a vertical bus, two fuse disconnectors, and a thyristor, an electric reactor and a capacitor electrically connected in sequence with the two fuse disconnectors respectively; wherein the vertical bus is mounted on one side of the mounting isolation plate, the two fuse disconnectors are connected in an up-down interval on the vertical bus, the thyristor is arranged on the mounting isolation plate on the same side as the fuse disconnectors, and the electric reactor and the capacitor are arranged on the other side of the mounting isolation plate and on the bottom plate.
2. The low pressure fixed compensation module of claim 1, wherein, The mounting isolation plate is provided with a through hole corresponding to each thyristor, so that the thyristor is connected to the electric reactor through wiring through the through hole.
3. The low pressure fixed compensation module of claim 1, wherein, The mounting isolation plate is provided with a control port corresponding to each thyristor, and the control port is used for connecting a control circuit and the thyristor to control the on-off of the thyristor.
4. The low pressure fixed compensation module of claim 3, wherein, The vertical bus and the mounting isolation plate, the fuse disconnectors and the vertical bus, the thyristor and the mounting isolation plate, the control port and the mounting isolation plate, the electric reactor and the bottom plate, and the capacitor and the bottom plate are all detachably connected.
5. The low pressure fixed compensation module of claim 4, wherein, The electric reactor is provided with a first locking part, and the bottom plate is provided with a plurality of second locking parts matching the first locking part, and the second locking parts and the first locking parts are connected by a connecting piece to lock or unlock the relative position between the electric reactor and the bottom plate.
6. The low pressure fixed compensation module of claim 5, wherein, The bottom plate is provided with a plurality of heat dissipation holes around the electric reactor and the capacitor.
7. The low pressure fixed compensation module of claim 1, wherein, The bottom plate is provided with a handle on both sides.
8. A low-voltage fixed compensation module, characterized in that The utility model relates to a low-voltage fixed compensation module, comprising:
9. The low pressure fixed compensation module of claim 8, wherein, a mounting base comprising a bottom plate and a mounting isolation plate vertically arranged on the bottom plate; 10. The low pressure fixed compensation module of claim 8, wherein, a compensation assembly comprising a vertical bus, two fuse disconnectors, and a thyristor, an electric reactor and a capacitor electrically connected in sequence with the two fuse disconnectors respectively; wherein the vertical bus is mounted on one side of the mounting isolation plate, the two fuse disconnectors are connected in an up-down interval on the vertical bus, the thyristor is arranged on the mounting isolation plate on the same side as the fuse disconnectors, and the electric reactor and the capacitor are arranged on the other side of the mounting isolation plate and on the bottom plate. The mounting isolation plate is provided with a through hole corresponding to each thyristor, so that the thyristor is connected to the electric reactor through wiring through the through hole. The mounting isolation plate is provided with a control port corresponding to each thyristor, and the control port is used for connecting a control circuit and the thyristor to control the on-off of the thyristor. The vertical bus and the mounting isolation plate, the fuse disconnectors and the vertical bus, the thyristor and the mounting isolation plate, the control port and the mounting isolation plate, the electric reactor and the bottom plate, and the capacitor and the bottom plate are all detachably connected. The electric reactor is provided with a first locking part, and the bottom plate is provided with a plurality of second locking parts matching the first locking part, and the second locking parts and the first locking parts are connected by a connecting piece to lock or unlock the relative position between the electric reactor and the bottom plate. The bottom plate is provided with a plurality of heat dissipation holes around the electric reactor and the capacitor. The bottom plate is provided with a handle on both sides. The utility model relates to a low-voltage fixed compensation module, comprising: a mounting base comprising a bottom plate and a mounting isolation plate vertically arranged on the bottom plate; a compensation assembly comprising a vertical bus, two fuse disconnectors, and a thyristor, an electric reactor and a capacitor electrically connected in sequence with the two fuse disconnectors respectively; wherein the vertical bus is mounted on one side of the mounting isolation plate, the two fuse disconnectors are connected in an up-down interval on the vertical bus, the thyristor is arranged on the mounting isolation plate on the same side as the fuse disconnectors, and the electric reactor and the capacitor are arranged on the other side of the mounting isolation plate and on the bottom plate. The mounting isolation plate is provided with a through hole corresponding to each thyristor, so that the thyristor is connected to the electric reactor through wiring through the through hole. The mounting isolation plate is provided with a control port corresponding to each thyristor, and the control port is used for connecting a control circuit and the thyristor to control the on-off of the thyristor. The vertical bus and the mounting isolation plate, the fuse disconnectors and the vertical bus, the thyristor and the mounting isolation plate, the control port and the mounting isolation plate, the electric reactor and the bottom plate, and the capacitor and the bottom plate are all detachably connected. The electric reactor is provided with a first locking part, and the bottom plate is provided with a plurality of second locking parts matching the first locking part, and the second locking parts and the first locking parts are connected by a connecting piece to lock or unlock the relative position between the electric reactor and the bottom plate. The bottom plate is provided with a plurality of heat dissipation holes around the electric reactor and the capacitor. The bottom plate is provided with a handle on both sides. The utility model relates to a low-voltage fixed compensation module, comprising: a mounting base comprising a bottom plate and a mounting isolation plate vertically arranged on the bottom plate; a compensation assembly comprising a vertical bus, two fuse disconnectors, and a thyristor, an electric reactor and a capacitor electrically connected in sequence with the two fuse disconnectors respectively; wherein the vertical bus is mounted on one side of the mounting isolation plate, the two fuse disconnectors are connected in an up-down interval on the vertical bus, the thyristor is arranged on the mounting isolation plate on the same side as the fuse disconnectors, and the electric reactor and the capacitor are arranged on the other side of the mounting isolation plate and on the bottom plate. The mounting isolation plate is provided with a through hole corresponding to each thyristor, so that the thyristor is connected to the electric reactor through wiring through the through hole. The mounting isolation plate is provided with a control port corresponding to each thyristor, and the control port is used for connecting a control circuit and the thyristor to control the on-off of the thyristor. The vertical bus and the mounting isolation plate, the fuse disconnectors and the vertical bus, the thyristor and the mounting isolation plate, the control port and the mounting isolation plate, the electric reactor and the bottom plate, and the capacitor and the bottom plate are all detachably connected. The electric reactor is provided with a first locking part, and the bottom plate is provided with a plurality of second locking parts matching the first locking part, and the second locking parts and the first locking parts are connected by a connecting piece to lock or unlock the relative position between the electric reactor and the bottom plate. The bottom plate is provided with a plurality of heat dissipation holes around the electric reactor and the capacitor. The bottom plate is provided with a handle on both sides.