Reactive power compensation device

Abstract

The utility model belongs to the electric power system technical field discloses a kind of reactive power compensation device, including bottom beam, incoming line cabinet, collection type shunt capacitor, shell, electric reactor, discharge coil and oil conservator, and collection type shunt capacitor are all located on bottom beam in incoming line cabinet, and collection type shunt capacitor is located at the side of incoming line cabinet.Electric reactor and discharge coil are all located in shell, shell is located at the top of collection type shunt capacitor, the incoming line end of shell is connected with the outgoing line end of incoming line cabinet, and the outgoing line end of shell is connected with the incoming line end of collection type shunt capacitor;Oil conservator is located at the top of collection type shunt capacitor and is communicated with collection type shunt capacitor, and oil conservator is located at the side of shell away from incoming line cabinet.The reactive power compensation device provided by the utility model is small in size, compact in structure, and convenient for wiring.

Description

Technical Field

[0001] This utility model relates to the field of power system technology, and in particular to a reactive power compensation device. Background Technology

[0002] Reactive power compensation, also known as reactive power compensation, is a technology used in power supply systems to improve the power factor of the power grid, reduce losses in power transformers and transmission lines, improve power supply efficiency, and improve the power supply environment.

[0003] Currently, reactive power compensation devices play a crucial role in improving the power factor of the power grid, reducing losses in power supply transformers and transmission lines, maximizing the efficiency of power supply and distribution, and improving the quality of power supply voltage. However, in related technologies, the layout of the incoming line cabinet, integrated parallel capacitors, reactors, and discharge coils of reactive power compensation devices is relatively dispersed and bulky, which is not conducive to the site layout of reactive power compensation devices. Utility Model Content

[0004] The purpose of this utility model is to provide a reactive power compensation device that is compact in structure and easy to arrange.

[0005] To achieve this objective, the present invention adopts the following technical solution: A reactive power compensation device is provided, comprising: Bottom beam; The incoming line cabinet is located on the bottom beam; A series of parallel capacitors are installed on the bottom beam and located on one side of the incoming line cabinet; A housing is located on top of the combined parallel capacitor. The inlet terminal of the housing is connected to the outlet terminal of the inlet cabinet, and the outlet terminal of the housing is connected to the inlet terminal of the combined parallel capacitor. The reactor is located inside the housing; A discharge coil is disposed inside the housing; An oil storage tank is located on top of the combined parallel capacitor and connected in communication with the combined parallel capacitor, and the oil storage tank is located on the side of the housing away from the incoming line cabinet.

[0006] Optionally, the reactive power compensation device further includes an adapter, the first end of which is connected to the output terminal of the housing, and the second end of which is connected to the input terminal of the combined parallel capacitor.

[0007] Optionally, the adapter includes: The first pair of connectors has a first end connected to the outlet end of the housing and forming a seal, and a second end connected to the inlet end of the combined parallel capacitor and forming a seal. The first pair of connectors contains insulating oil. A transfer conductor is immersed in the insulating oil, and the discharge coil and the reactor are electrically connected to the combined parallel capacitor through the transfer conductor.

[0008] Optionally, the reactive power compensation device further includes a second pair of connecting pipes, the first end of which is connected to the outlet flange of the incoming line cabinet, and the second end of which is connected to the inlet flange of the housing.

[0009] Optionally, the incoming line cabinet is fastened to the bottom beam via multiple first screw connectors; And / or, the housing is welded to the assembled parallel capacitor; And / or, the oil tank is securely connected to the aggregated parallel capacitor via a plurality of second screw connections.

[0010] Optionally, the incoming line cabinet includes: The cabinet is mounted on the bottom beam; A circuit breaker is installed inside the cabinet, and the circuit breaker is electrically connected to the reactor via a main line; A surge arrester is installed inside the cabinet and electrically connected to the main line; The protection unit is located inside the cabinet and is electrically connected to the discharge coil.

[0011] Optionally, the reactor is an oil-immersed reactor, and the discharge coil is an oil-immersed discharge coil.

[0012] Optionally, the reactive power compensation device further includes a transfer vehicle, on which the bottom beam is mounted.

[0013] Optionally, the transfer vehicle is equipped with multiple hydraulic lifters for lifting the transfer vehicle.

[0014] Optionally, the transfer vehicle is equipped with a pallet, and the bottom beam is welded to the pallet.

[0015] Beneficial effects: The reactive power compensation device provided by this utility model integrates the incoming line cabinet, the combined parallel capacitor, the reactor, the discharge coil, and the oil conservator on the base beam, which helps to reduce the size of the reactive power compensation device and improve its structural compactness. Furthermore, integrating the reactor and discharge coil within the housing provides protection, and the housing is located on top of the combined parallel capacitor and between the incoming line cabinet and the oil conservator, which improves the structural compactness of the reactive power compensation device while facilitating wiring. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the reactive power compensation device provided by this utility model from one perspective. Figure 2This is a schematic diagram of the reactive power compensation device provided by this utility model from another perspective. Figure 3 This is a partial sectional view of the reactive power compensation device provided by this utility model at the incoming line cabinet; Figure 4 This is the electrical schematic diagram of the reactive power compensation device provided by this utility model; Figure 5 This is a structural schematic diagram of the reactive power compensation device with a transfer vehicle provided by this utility model.

[0017] In the picture: 100. Bottom beam; 200. Incoming line cabinet; 210. Cabinet body; 220. Circuit breaker; 230. Instrument transformer; 240. Surge arrester; 250. Box body; 300. Parallel capacitors; 400. Casing; 500. Oil storage tank; 600. Adapter; 700, the second takeover; 800. Transfer vehicle; 810. Pallet; 820. Hydraulic lifter. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0022] Reference Figure 1 and Figure 2 As shown, this embodiment provides a reactive power compensation device, which includes a bottom beam 100, an incoming line cabinet 200, a combined parallel capacitor 300, a housing 400, a reactor (not shown), a discharge coil (not shown), and an oil conservator 500.

[0023] Both the incoming line cabinet 200 and the combined parallel capacitor 300 are mounted on the bottom beam 100, with the combined parallel capacitor 300 located on one side of the incoming line cabinet 200. The reactor and discharge coil are both housed within the housing 400, which is situated on top of the combined parallel capacitor 300. The incoming terminal of the housing 400 is connected to the outgoing terminal of the incoming line cabinet 200, and the outgoing terminal of the housing 400 is connected to the incoming terminal of the combined parallel capacitor 300. The oil conservator 500 is located on top of the combined parallel capacitor 300 and is connected to it, with the oil conservator 500 situated on the side of the housing 400 furthest from the incoming line cabinet 200.

[0024] In this embodiment, the incoming line cabinet 200, the integrated parallel capacitor 300, the reactor, the discharge coil, and the oil conservator 500 are integrated onto the base beam 100, which helps to reduce the volume of the reactive power compensation device and improve its structural compactness. Furthermore, integrating the reactor and discharge coil within the housing 400 provides protection, and the housing 400 is located on top of the integrated parallel capacitor 300 and between the incoming line cabinet 200 and the oil conservator 500, thus improving the structural compactness of the reactive power compensation device while facilitating wiring.

[0025] It is understandable that the reactive power compensation device can be connected in parallel to the power grid system through the incoming line cabinet 200 to achieve the purpose of reactive power compensation.

[0026] In this embodiment, the specific wiring method between the incoming line cabinet 200, the combined parallel capacitor 300, the reactor and the discharge coil is existing technology, and will not be described in detail in this embodiment.

[0027] For example, the oil tank 500 is connected to the housing of the combined parallel capacitor 300 via an oil pipe (not shown).

[0028] For example, the incoming line cabinet 200 can be fastened to the bottom beam 100 by multiple first screws, which facilitates disassembly and assembly.

[0029] For example, the housing 400 can be welded to the combined parallel capacitor 300, which is stable and reliable.

[0030] For example, the oil tank 500 can be securely connected to the aggregated parallel capacitor 300 via multiple second screw connections for easy assembly and disassembly. For instance, the aggregated parallel capacitor 300 has a support (not shown) on its top, and the oil tank 500 is mounted on the support and securely connected to the support via multiple second screw connections.

[0031] In some embodiments, such as Figure 2 As shown, the reactive power compensation device also includes an adapter 600. The first end of the adapter 600 is connected to the output terminal of the housing 400, and the second end of the adapter 600 is connected to the input terminal of the integrated parallel capacitor 300. It is understood that both the reactor and the discharge coil can be electrically connected to the integrated parallel capacitor 300 via the adapter 600, facilitating wiring.

[0032] In one feasible embodiment, the adapter 600 includes a first pair of connecting pipes (not shown) and an adapter conductor (not shown). The first end of the first pair of connecting pipes is connected to and sealed to the outlet end of the housing 400, and the second end of the first pair of connecting pipes is connected to and sealed to the inlet end of the integrated parallel capacitor 300. The first pair of connecting pipes contains insulating oil. The adapter conductor is immersed in the insulating oil, and the discharge coil and reactor are electrically connected to the integrated parallel capacitor 300 through the adapter conductor. In this embodiment, compared to the conductors used to connect the reactor and the integrated parallel capacitor 300, and the conductors connecting the discharge coil and the integrated parallel capacitor 300, which are exposed to the atmosphere, this provides good windproof, rainproof, and dustproof effects, which is beneficial to the stable operation of the reactive power compensation device. Furthermore, the insulating oil inside the first pair of connecting pipes provides a good insulating environment, which helps to reduce the space occupied by the adapter conductor, thus reducing the volume of the first pair of connecting pipes and consequently reducing the volume of the reactive power compensation device, improving its structural compactness.

[0033] For example, the first pair of connecting pipes can be welded or flanged to the 300 parallel capacitor, providing a good seal, easy connection, and stable and reliable connection.

[0034] In one feasible implementation, the reactor is configured as an oil-immersed reactor, and the discharge coil is configured as an oil-immersed discharge coil. It is understood that the cabinet 210 contains insulating oil, and the core of both the reactor and the core of the discharge coil can be immersed in the insulating oil within the cabinet 210.

[0035] For example, the core of the reactor and the core of the discharge coil can be distributed vertically within the housing 400.

[0036] In some embodiments, such as Figure 2 As shown, the reactive power compensation device also includes a second pair of connecting pipes 700. The first end of the second pair of connecting pipes 700 is connected to the outlet flange of the incoming line cabinet 200, and the second end of the second pair of connecting pipes 700 is connected to the inlet flange of the housing 400. This provides a good seal and excellent windproof, rainproof, and dustproof performance, which is beneficial to the stable operation of the reactive power compensation device. It is understood that the conductors of the electrical components and reactors inside the incoming line cabinet 200, used for electrical connections, can pass through the second pair of connecting pipes 700, facilitating wiring and providing protection.

[0037] In some embodiments, such as Figure 3 and Figure 4 As shown, the incoming line cabinet 200 includes a cabinet 210, a circuit breaker 220, a surge arrester 240, and a protection unit (not shown). The circuit breaker 220, surge arrester 240, and protection unit are all housed within the cabinet 210, which is mounted on a base beam 100. The circuit breaker 220 is electrically connected to a reactor via a main line (not shown), the surge arrester 240 is electrically connected to the main line, and the protection unit is electrically connected to a discharge coil. When the protection unit receives information that the voltage value transmitted by the discharge coil exceeds a set value, the protection unit can control the circuit breaker 220 to trip, ensuring safety and reliability. The incoming line terminal of the incoming line cabinet 200 is used to connect external cables to the power supply; the cables are electrically connected to the circuit breaker 220. Figure 4 In this diagram, QF represents circuit breaker 220, FV represents surge arrester 240, L represents reactor, C represents 300 shunt capacitor, and TV1 represents discharge coil.

[0038] In this embodiment, the specific wiring method of each electrical component in the incoming line cabinet 200 is the prior art, and will not be described in detail in this embodiment.

[0039] For example, the incoming line cabinet 200 also includes an indicator disposed on the cabinet body 210, the indicator being electrically connected to the cable. The indicator may be an indicator light connected in series with a capacitor. Figure 4 HL in this context stands for indicator.

[0040] For example, the incoming line cabinet 200 also includes a controller (not shown) and a current transformer 230 disposed within the cabinet 210. The current transformer 230 is electrically connected to the main line and electrically connected to the controller. The current transformer 230 includes a current transformer and a voltage transformer. Figure 4 TV2 is a voltage transformer, and CT is a current transformer. When the controller receives information that the current value transmitted by the current transformer is greater than a set value, the controller can control the circuit breaker 220 to trip, ensuring safety and reliability. In this embodiment, the controller can remotely control the on / off state of the circuit breaker 220, realizing automatic switching of the reactive power compensation device, refined compensation, reducing resource waste, and meeting the requirements of unattended operation and remote operation.

[0041] For example, the controller and protection unit may be housed in a housing 250, which is located within a cabinet 210.

[0042] In this embodiment, the reactive power compensation device, through the installation of the incoming line cabinet 200, has good protection and monitoring functions.

[0043] In some embodiments, such as Figure 5 As shown, the reactive power compensation device also includes a transfer vehicle 800, on which a base beam 100 is installed. It is understood that the incoming line cabinet 200, the integrated parallel capacitor 300, the reactor, the discharge coil, and the oil conservator 500 are all located on the transfer vehicle 800, providing good flexibility and mobility, facilitating transportation, and enabling rapid deployment. The reactive power compensation device can be used for energy-saving testing and can provide on-site reactive power compensation for temporary high-power sources far from the power grid. It can also flexibly deploy reactive power compensation equipment within a regional power grid. In this embodiment, the reactive power compensation device can be transferred to the required regional power grid using the transfer vehicle 800, eliminating the need for civil engineering, reducing the footprint, significantly reducing hoisting, transportation, installation, and maintenance costs, lowering costs, shortening the installation and commissioning cycle, simplifying later maintenance and repair, and effectively reducing the cost of subsequent capacity expansion and upgrades. This allows for dynamic deployment of the reactive power compensation device within the regional power grid, significantly improving the economic benefits of using the reactive power compensation device. Furthermore, integrating the incoming line cabinet 200, the combined parallel capacitor 300, the reactor, the discharge coil, and the oil conservator 500 onto the base beam 100, and integrating the reactor and the discharge coil into the housing 400, with the housing 400 located on top of the combined parallel capacitor 300 and between the incoming line cabinet 200 and the oil conservator 500, helps to reduce the height of the reactive power compensation device, making it more suitable for relocation.

[0044] In one feasible implementation, the transfer vehicle 800 is provided with a pallet 810, and the bottom beam 100 is welded to the pallet 810, so that the connection is stable and reliable.

[0045] In one feasible implementation, the transfer vehicle 800 is equipped with multiple hydraulic lifters 820 for lifting the transfer vehicle 800. When the reactive power compensation device is transferred to the required regional power grid, the transfer vehicle 800 can be lifted by the hydraulic lifters 820, reducing the load on the tires of the transfer vehicle 800 and providing stable and reliable support for the reactive power compensation device, which is beneficial for subsequent operations.

[0046] For example, the hydraulic lift 820 can be fixed to the bottom of the pallet 810.

[0047] For example, the transfer vehicle 800 can be configured as a flatbed truck.

[0048] In this embodiment, the reactive power compensation device is a highly integrated and compact mobile device that integrates primary equipment (such as a combined parallel capacitor 300, reactor, discharge coil, circuit breaker 220, transformer 230 and surge arrester 240), secondary equipment (such as controller and protection unit) and auxiliary devices (such as oil tank 500). Each component can be manufactured independently and assembled in the factory. The field cable connects the reactive power compensation device to the power grid system in parallel through the incoming line cabinet 200.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A reactive power compensation device, characterized by, include: Bottom beam (100); The incoming line cabinet (200) is located on the bottom beam (100); A series of parallel capacitors (300) are mounted on the bottom beam (100) and located on one side of the incoming line cabinet (200); A housing (400) is disposed on top of the combined parallel capacitor (300). The inlet end of the housing (400) is connected to the outlet end of the inlet cabinet (200), and the outlet end of the housing (400) is connected to the inlet end of the combined parallel capacitor (300). A reactor is disposed within the housing (400); A discharge coil is disposed inside the housing (400); An oil storage tank (500) is located on top of the combined parallel capacitor (300) and connected in communication with the combined parallel capacitor (300), and the oil storage tank (500) is located on the side of the housing (400) away from the incoming line cabinet (200).

2. The device of claim 1, wherein, The reactive power compensation device also includes an adapter (600), the first end of which is connected to the output end of the housing (400), and the second end of which is connected to the input end of the combined parallel capacitor (300).

3. The device of claim 2, wherein, The adapter (600) includes: The first pair of connectors, the first end of the first pair of connectors is connected to the outlet end of the housing (400) and forms a seal, the second end of the first pair of connectors is connected to the inlet end of the combined parallel capacitor (300) and forms a seal, and the first pair of connectors is provided with insulating oil. A transfer conductor is immersed in the insulating oil, and the discharge coil and the reactor are electrically connected to the combined parallel capacitor (300) through the transfer conductor.

4. The device of claim 1, wherein, The reactive power compensation device also includes a second pair of connecting pipes (700), the first end of which is connected to the outlet flange of the incoming line cabinet (200), and the second end of which is connected to the inlet flange of the housing (400).

5. The device of claim 1, wherein, The incoming line cabinet (200) is fastened to the bottom beam (100) by a plurality of first screw connectors; And / or, the housing (400) is welded to the aggregated parallel capacitor (300); And / or, the oil tank (500) is fastened to the aggregated parallel capacitor (300) by a plurality of second screws.

6. The device of claim 1, wherein, The incoming line cabinet (200) includes: The cabinet (210) is mounted on the bottom beam (100); A circuit breaker (220) is installed inside the cabinet (210), and the circuit breaker (220) is electrically connected to the reactor via the main line; A surge arrester (240) is installed inside the cabinet (210) and electrically connected to the main line; The protection unit is located inside the cabinet (210) and electrically connected to the discharge coil.

7. A reactive compensation device according to any one of claims 1-6, characterised in that The reactor is an oil-immersed reactor, and the discharge coil is an oil-immersed discharge coil.

8. A reactive compensation device according to any one of claims 1-6, characterised in that The reactive power compensation device also includes a transfer vehicle (800), on which the bottom beam (100) is installed.

9. The device of claim 8, wherein, The transfer trolley (800) is provided with a plurality of hydraulic lifters (820), which are used for lifting the transfer trolley (800).

10. The device of claim 8, wherein, The transfer trolley (800) is provided with a supporting plate (810), and the bottom beam (100) is welded on the supporting plate (810).

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