A direct current energy consuming device

Abstract

The direct current energy consumption device comprises a cover plate, a direct current energy consumption assembly composed of sequentially arranged plate-shaped direct current energy consumption units, a support disc for supporting the direct current energy consumption assembly and a support frame; the direct current energy consumption assembly is stacked by the plate-shaped direct current energy consumption units; the plate-shaped direct current energy consumption unit is composed of resistance module units and valve module units connected with each other; the resistance modules in the resistance module units between the adjacent plate-shaped direct current energy consumption units in the stack are connected with each other; the resistance modules in the resistance module units and the valve modules in the valve module units are connected in the order of resistance module, valve module, valve module and resistance module; the resistance modules in the top layer resistance module unit and the resistance modules in the bottom layer resistance module unit in the direct current energy consumption assembly are connected with an external circuit; the valve modules and the resistance modules are arranged in the same device under the condition of meeting insulation and effective electrical connection, and the multi-layer design is convenient for installation and maintenance.

Description

Technical Field

[0001] This invention relates to the field of power electronics technology, and more specifically to a DC power consumption device. Background Technology

[0002] DC transmission lines can efficiently and conveniently transmit large amounts of electrical energy from energy bases to load centers. For operational DC transmission projects, the electrical energy absorbed at the receiving end is balanced with the electrical energy generated at the sending end, and the voltage and operating frequency of the sending-end grid remain constant. When the receiving-end power system experiences disturbances or faults and cannot absorb the electrical energy sent from the sending end, the voltage and frequency of the sending-end grid will be disturbed. This disturbance can be reduced by quickly adjusting the output of generators. If the power source at the sending end is a thermal power generator or a hydropower generator, the generator output can be adjusted, but the adjustment process requires a certain time delay and cannot achieve an instantaneous response, so the voltage and frequency of the grid will still be disturbed. If the power source at the sending end is a wind turbine generator, since the natural wind force is uncontrollable, the output of the wind turbine generator cannot be adjusted according to operational needs, and the voltage and frequency of the sending-end grid will be severely disturbed. In severe cases, it may cause the generator set to break down, leading to a serious grid accident.

[0003] The development of ultra-high voltage direct current (UHVDC) transmission technology has increased the transmission capacity of DC power transmission to 8,000-12,000 MW. As a result, the installed capacity of traditional thermal and hydropower generators in the sending-end power grid has also increased. Rapid adjustment of generator output has become increasingly difficult, and the bundled transmission of wind, solar, hydro, and thermal power has exacerbated this difficulty. The development of flexible DC transmission technology has led to the increasing scale of wind power grid connection. The risk of wind turbine generator failure caused by power mismatch between sending and receiving ends due to grid faults at the receiving end has also increased. Summary of the Invention

[0004] To address the aforementioned shortcomings in the existing technology, this invention provides a DC power dissipation device. The valve tower of the DC power dissipation device is designed based on a hybrid resistance topology, as shown in the figure below. Figure 14 As shown, the DC power consumption device integrates two major structures: a valve module and a resistor module. This invention achieves the core function of the DC power consumption device through a reasonable electrical connection design of the two major structures, and arranges the fiber optic system and water cooling system inside it. The reasonable spatial layout while ensuring the insulation between the two major structures and their internal coordination is the core of this invention.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] The present invention provides a DC energy dissipation device, comprising: a cover plate (1), a DC energy dissipation component (2) composed of plate-shaped DC energy dissipation units arranged in sequence, a support plate (3) supporting the DC energy dissipation component (2), and a support frame (4);

[0007] The DC power consumption component (2) is formed by stacking the plate-shaped DC power consumption units; the plate-shaped DC power consumption unit is composed of interconnected resistor module units and valve module units;

[0008] The resistor module (21) in the resistor module unit between the superimposed adjacent plate-shaped DC power consumption units is connected to the resistor module (21);

[0009] The resistor module (21) in the resistor module unit and the valve module (22) in the valve module unit are connected in the order of resistor module (21), valve module (22), valve module (22) and resistor module (21), respectively.

[0010] The resistor module (21) in the top-level resistor module unit and the resistor module (21) in the bottom-level resistor module unit of the DC power consumption component are respectively connected to the external circuit.

[0011] Preferably, the valve modules (22) constituting the plate-shaped DC power consumption unit are connected by valve module connectors (25);

[0012] The resistor modules (21) of the superimposed adjacent plate-shaped DC power consumption units are connected by resistor module connectors (24).

[0013] The valve module (22) and resistor module (21) of the plate-shaped DC power consumption unit are connected by valve module and resistor module connector (23) respectively.

[0014] Preferably, a crossarm insulator (27) is provided between the valve module (22) and the resistor module (21) of the plate-shaped DC energy dissipation unit;

[0015] A supporting insulator (26) is provided between adjacent plate-shaped DC energy dissipation units.

[0016] Preferably, the resistor module (21) of the resistor module unit and the valve module (22) of the valve module unit are respectively provided with an inlet and an outlet connected to the main water pipe (5) set on the support plate (3) through a water pipe (51).

[0017] Preferably, the valve module (22) of the valve module unit is connected to the main optical fiber (6) disposed on the support plate (3) via the board optical fiber (61).

[0018] Preferably, the DC power consumption component (2) is uniformly provided with interlayer shielding covers (28) around its perimeter.

[0019] Preferably, the resistor module (21) in the top-level resistor module unit is provided with an output tube (82) at the connection point between the resistor module (21) and the external circuit;

[0020] The resistor module (21) in the bottom resistor module unit is provided with an inlet tube (81) at the connection point between the resistor module (21) and the external circuit.

[0021] Preferably, the main water pipe (5) and the main optical fiber (6) on the support plate (3) are fixed on the support plate (3) by the valve bracket (7).

[0022] Preferably, the support frame (4) is composed of vertical insulators (41) arranged in an n×m matrix;

[0023] An "X" structure inclined insulator (42) is provided between adjacent vertical insulators.

[0024] Preferably, the support plate (3) is a rectangular plate structure, and corner equalization rings (31) are provided at the four corners of the rectangular plate structure.

[0025] Compared with the closest prior art, the beneficial effects of the present invention are as follows:

[0026] 1. The present invention provides a DC energy dissipation device, comprising: a cover plate, a DC energy dissipation assembly composed of plate-shaped DC energy dissipation units, a support plate and a support frame supporting the DC energy dissipation assembly arranged sequentially; the DC energy dissipation assembly is composed of stacked plate-shaped DC energy dissipation units; each plate-shaped DC energy dissipation unit is composed of interconnected resistor module units and valve module units; resistor modules in the resistor module units of adjacent stacked plate-shaped DC energy dissipation units are connected to each other; the resistor modules in the resistor module units and the valve modules in the valve module units are connected in the order of resistor module, valve module, valve module and resistor module, respectively; the resistor modules in the top-level resistor module units and the resistor modules in the bottom-level resistor module units of the DC energy dissipation assembly are respectively connected to an external circuit; the present invention arranges valve modules and resistor modules inside the same device while satisfying insulation and effective electrical connection, and the multi-layer design facilitates installation and maintenance.

[0027] 2. This invention arranges the optical fiber structure and the water-cooling structure inside the same device while satisfying the requirements of insulation and effective electrical connection. Attached Figure Description

[0028] Figure 1 : Front view of the DC power consumption device of the present invention;

[0029] Figure 2 Top view of the DC power consumption device of the present invention;

[0030] Figure 3 : A structural diagram of the support frame of the present invention;

[0031] Figure 4 : A structural diagram of the valve support of the present invention;

[0032] Figure 5 Top view of the DC power dissipation component of the present invention;

[0033] Figure 6 : A side view of the DC power consumption feet of the present invention;

[0034] Figure 7 : A structural diagram of the support disk of the present invention;

[0035] Figure 8 : A structural diagram of the interlayer shielding cover of the present invention;

[0036] Figure 9 : A structural diagram of the cover plate of the present invention;

[0037] Figure 10 : A structural diagram of the outlet tube of the present invention;

[0038] Figure 11 : A structural diagram of the inlet pipe of the present invention;

[0039] Figure 12 : Electrical connection structure diagram of the present invention;

[0040] Figure 13 : A structural diagram of the optical fiber and water pipe of this invention;

[0041] Figure 14 : Topological structure diagram of the present invention.

[0042] Figure label:

[0043] 1-Cover plate, 2-DC power dissipation component, 3-Support plate, 4-Support frame, 5-Main water pipe, 6-Main optical fiber, 7-Valve bracket, 8-Connecting hardware, 21-Resistor module, 22-Valve module, 23-Connector between valve module and resistor module, 24-Resistor module connector, 25-Valve module connector, 26-Support insulator, 27-Crossarm insulator, 28-Interlayer shielding cover, 31-Angle equalizing ring, 41-Vertical insulator, 42-Angle insulator, 51-Water pipe, 61-Board optical fiber, 81-Inlet female conduit, 82-Outlet female conduit. Detailed Implementation

[0044] To better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0045] Example 1

[0046] The overall structure of the DC power consumption device provided by this invention is as follows: Figure 1As shown. The valve tower is divided by the support plate 3. The lower part consists of the support frame 4, the main water pipe 5, the main optical fiber 6 and the valve bracket 7; the upper part consists of two main parts, the resistor module 21 and the valve module 22, and other structural components. The valve module 22 and the resistor module 21 are arranged in a 5-layer array. The support plate 3 integrates the main water pipe 5, the inlet pipe 81 and the main optical fiber 6. The cover plate 1 is equipped with the outlet pipe 82.

[0047] Both valve module 22 and resistor module 21 are arranged in 10-module units on 5 layers above support plate 3. For example... Figure 2 As shown, each layer has two valve modules 22 and two resistor modules 21. The incoming line from the resistor module connects two valve modules in series, and then connects one resistor module in series.

[0048] Support frame 4 structure as follows Figure 3 As shown, the vertical insulator 41 is an epoxy fiberglass rod arranged in a 3×5 matrix, and the inclined insulator 42 is set between two adjacent vertical insulators. The inclined structure can effectively enhance the seismic performance.

[0049] Valve support 7 design as follows Figure 4 As shown, two main optical fibers 6 are fixed on the valve bracket 7 to provide optical fiber to the valve module IGBT control board, and two main water pipes 5 to provide cooling water to the valve module 22 and the power-consuming resistor in the resistor module 21.

[0050] The structure of DC power consumption component 2 is as follows: Figure 5 and Figure 6 As shown, it includes 10 valve modules 22 and 10 resistor modules 21. Each module consists of a frame made up of 3 aluminum beams. Another function of the aluminum beams is to connect potentials. Each module's aluminum beam is supported by 6 supporting insulators 26. The two resistor modules in each layer are connected laterally by 3 crossarm insulators 27. The two valve modules in each layer are connected by 2 crossarm insulators 27 and 1 valve module connector (25). The two valve modules and the resistor module connector 23 connect the potentials of the resistor module aluminum beams and the valve module aluminum beams together. The module potential flow is as follows: aluminum beam where the inlet potential is located in the layer → resistor module 21 → valve module 22 → valve module and resistor module connector 23 → valve module 22 → valve module connector 25 → valve module 22 → valve module and resistor module connector 23 → resistor module 21 → aluminum beam where the outlet potential is located in the layer.

[0051] Support plate 3 structure as follows Figure 7 As shown, it consists of four corner equalizing rings 31, using an aluminum alloy double-tube structure. The center of the equalizing ring is slightly lower than the center of the support plate 3, and it covers the bottom vertical insulator 41 as much as possible.

[0052] Interlayer shielding cover 28 Figure 8 As shown, there are 5 layers in total, each layer consisting of 6 plate-type shielding covers and 4 plate-type corner shielding covers. Cover plate 1 is as follows... Figure 9 As shown, it consists of four plate-shaped shielding covers, each with an aluminum alloy double-tube structure around its perimeter. There are two cover plates 1 above the valve module 22 and two cover plates 1 above the resistor module 21. (See diagram) Figure 10 As shown, the outgoing line female 82 is fixed to the underside of the upper cover plate 1 of the resistor via connecting hardware 8. The incoming line female is as follows... Figure 11 As shown, the inlet pipe 81 is fixed to the bottom support plate by the connecting hardware 8.

[0053] Electrical connection structure such as Figure 12 As shown, the incoming busbar connects the incoming pipe busbar to the first layer's inner incoming potential aluminum beam, the resistor connector 24 connects the lower layer's inner outgoing potential aluminum beam to the upper layer's inner incoming potential aluminum beam, and the outgoing busbar connects the outgoing pipe busbar to the fifth layer's inner outgoing potential aluminum beam.

[0054] The overall current flow direction is as follows: Incoming busbar → Incoming busbar → First layer inner incoming potential aluminum beam → First layer module → First layer inner outgoing potential aluminum beam → Interlayer busbar → Second layer inner incoming potential aluminum beam → Second layer module → Second layer inner outgoing potential aluminum beam → Interlayer busbar → Third layer inner incoming potential aluminum beam → Third layer module → Third layer inner outgoing potential aluminum beam → Interlayer busbar → Fourth layer inner incoming potential aluminum beam → Fourth layer module → Fourth layer inner outgoing potential aluminum beam → Interlayer busbar → Fifth layer inner incoming potential aluminum beam → Fifth layer module → Fifth layer inner outgoing potential aluminum beam → Outgoing busbar → Outgoing busbar.

[0055] Fiber optic structure and water pipe structure, such as Figure 13 As shown, the main optical fiber 6 guides the optical fiber to the optical fiber slot interface of the support plate 3. The optical fiber passes through the optical fiber slot interface on the tower, enters the optical fiber slot between the module layers through the board optical fiber 61, and then provides an optical fiber path to each valve module through the board optical fiber 61.

[0056] The main water pipe connects to the connecting water pipe on the support plate, and provides cooling water to the valve resistor and main resistor through 5 sets of inter-floor water pipes. The valve resistor requires 1 set of water pipe 51 for cooling, and the main resistor requires 4 sets of water pipe 51 for cooling. Each set of water pipe 51 has one inlet and one outlet branch water pipe on each of the 5 floors to cool the resistor.

[0057] This invention provides a novel DC power consumption device structure; the DC power consumption device structure arranges the valve module and resistor module inside the same valve tower while ensuring insulation, and effectively connects them electrically; the DC power consumption device structure integrates a secondary optical fiber structure and a water cooling structure.

[0058] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0059] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0060] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0061] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0062] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of the claims of the present invention pending approval.

Claims

1. A DC power dissipation device, characterized in that, The DC energy dissipation device includes: a cover plate (1), a DC energy dissipation component (2) composed of plate-shaped DC energy dissipation units, a support plate (3) supporting the DC energy dissipation component (2), and a support frame (4) arranged in sequence; The DC power consumption component (2) is formed by stacking the plate-shaped DC power consumption units; the plate-shaped DC power consumption unit is composed of interconnected resistor module units and valve module units; The resistor module (21) in the resistor module unit between the superimposed adjacent plate-shaped DC power consumption units is connected to the resistor module (21); The resistor module (21) in the resistor module unit and the valve module (22) in the valve module unit are connected in the order of resistor module (21), valve module (22), valve module (22) and resistor module (21), respectively. The resistor module (21) in the top-level resistor module unit and the resistor module (21) in the bottom-level resistor module unit of the DC power consumption component are respectively connected to the external circuit.

2. The DC energy dissipation device as described in claim 1, characterized in that, The valve modules (22) that make up the plate-shaped DC power consumption unit are connected to each other by valve module connectors (25); The resistor modules (21) of the superimposed adjacent plate-shaped DC power consumption units are connected by resistor module connectors (24). The valve module (22) and resistor module (21) of the plate-shaped DC power consumption unit are connected by valve module and resistor module connector (23) respectively.

3. A DC energy dissipation device as described in claim 2, characterized in that, A crossarm insulator (27) is provided between the valve module (22) and the resistor module (21) of the plate-shaped DC energy dissipation unit; A supporting insulator (26) is provided between adjacent plate-shaped DC energy dissipation units.

4. A DC energy dissipation device as described in claim 3, characterized in that, The resistor module (21) of the resistor module unit and the valve module (22) of the valve module unit are respectively provided with an inlet and an outlet connected to the main water pipe (5) set on the support plate (3) through a water pipe (51).

5. A DC power dissipation device as described in claim 4, characterized in that, The valve module (22) of the valve module unit is connected to the main optical fiber (6) set on the support plate (3) through the board optical fiber (61).

6. A DC power dissipation device as described in claim 5, characterized in that, The DC power dissipation component (2) is uniformly provided with interlayer shielding covers (28) around its perimeter.

7. A DC power dissipation device as described in claim 6, characterized in that, The resistor module (21) in the top-level resistor module unit is provided with an outlet tube (82) at the connection point between the resistor module (21) and the external circuit; The resistor module (21) in the bottom resistor module unit is provided with an inlet tube (81) at the connection point between the resistor module (21) and the external circuit.

8. A DC power dissipation device as described in claim 6, characterized in that, The main water pipe (5) and main optical fiber (6) on the support plate (3) are fixed on the support plate (3) by the valve bracket (7).

9. A DC power dissipation device as described in claim 1, characterized in that, The support frame (4) is composed of vertical insulators (41) arranged in an n×m matrix; An "X" structure inclined insulator (42) is provided between adjacent vertical insulators.

10. A DC power dissipation device as described in claim 1, characterized in that, The support plate (3) is a rectangular plate structure, and corner equalization rings (31) are provided at the four corners of the rectangular plate structure.

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