Three-phase integrated energy extraction reactor and offshore wind power system
Patent Information
- Application Number
- CN202522037201.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-09-22
AI Technical Summary
[0004]现有的抽能电抗器为三个单相本体相角接的结构，每个单相本体都带有自己的组件(如储油柜、片散等)，这些组件占有一定空间，而各单相本体之间需保持一定防火距离，使抽能电抗器的总占地面积更大
[0016]由此，本实用新型实施例提供的三相一体抽能电抗器，通过将三个单相抽能电抗器均浸没在同一个油箱内的绝缘油中，仅需设置一个油箱即可，相比于现有技术中每个单相本体均需设置一个油箱，可以减小制作油箱时的材料成本，并无需像现有技术一样保持各单相本体之间的防火距离，使三个单相抽能电抗器的结构更加紧凑，从而减小三相一体抽能电抗器的占地面积。通过将抽能绕组绕制在铁心的铁心旁轭的下部，可以通过铁心的铁心下轭对抽能绕组进行支撑，便于保持抽能绕组的位置。进一步的，通过将三个抽能绕组的端部在油箱内部采用三角形接法连接后，再通过三根抽能引线引出至油箱外部与用电设备电连接，在工厂制作三相一体抽能电抗器时，可以在工厂将三个单相抽能电抗器在油箱内完成接线，相比于现有技术，可以节省在施工现场对三个单相本体进行角接的工作，从而减小施工现场的接线工作量，提高抽能电抗器的交付效率。
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Figure CN224907717U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of reactor technology, specifically relating to a three-phase integrated pumping reactor and an offshore wind power system. Background Technology
[0002] As offshore wind power develops towards larger capacity, longer distance, and higher voltage, in order to meet the needs of reactive power compensation, harmonic suppression, voltage stability, and power consumption of on-site equipment in the power system, traditional offshore wind power platforms adopt a scheme of independent pumping reactors plus transformers.
[0003] As an important piece of equipment in ultra-high voltage and long-distance AC transmission networks, the working principle of the energy extraction reactor is to use the reactor to compensate for the capacitive current of the power system, while directly extracting part of the energy from the reactor to supply lighting and other domestic electricity for low-voltage power switch stations, without affecting the safe and stable operation of the reactor.
[0004] Existing pumping reactors consist of three single-phase units connected in a delta configuration. Each single-phase unit has its own components (such as an oil conservator and wafers), which occupy considerable space. Furthermore, a fire-resistant distance must be maintained between the single-phase units, increasing the overall footprint of the pumping reactor. Moreover, the three single-phase units must arrive at the construction site before the delta connection can be performed, increasing the workload on-site and reducing delivery efficiency.
[0005] In summary, existing pumping reactor structures suffer from problems such as large footprint and heavy workload on construction sites. Utility Model Content
[0006] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the existing technology by providing a three-phase integrated pumping reactor and an offshore wind power system, which can reduce the footprint of the pumping reactor and reduce the wiring workload of the pumping reactor at the construction site.
[0007] In a first aspect, this utility model embodiment provides a three-phase integrated pumping reactor, which includes an oil tank and single-phase pumping reactors. The oil tank is filled with insulating oil. There are three single-phase pumping reactors, all of which are immersed in the insulating oil within the oil tank. Each single-phase pumping reactor includes a core, a main winding, and a pumping winding. The core is a single-phase three-limb core, with the main winding wound on the core column and the pumping winding wound on the lower part of the core side yoke. The ends of the three pumping windings are connected in a delta configuration inside the oil tank and then led out to the outside of the oil tank via three pumping leads for electrical connection to the electrical equipment.
[0008] In some embodiments, each of the energy extraction windings includes two energy extraction coils, which are respectively disposed on two core side yokes of the core, and the two energy extraction coils are connected in parallel.
[0009] In some embodiments, the two pumping coils are symmetrically arranged on both sides of the core column.
[0010] In some embodiments, the conductors of the main winding are made of flat copper wire, round copper wire, flat aluminum wire, or round aluminum wire, and the conductors of the pumping coil are made of flat copper wire, round copper wire, flat aluminum wire, or round aluminum wire.
[0011] In some embodiments, the three-phase integrated pumping reactor further includes a heat sink. The heat sink is disposed outside the oil tank and is in communication with the inside of the oil tank, for driving the insulating oil to circulate between the heat sink and the oil tank to dissipate heat from the insulating oil.
[0012] In some embodiments, the fuel tank is provided with three energy extraction sleeves. The three energy extraction sleeves are correspondingly arranged with three energy extraction leads, and each energy extraction lead passes through the corresponding energy extraction sleeve and extends to the outside of the fuel tank.
[0013] In some embodiments, the three single-phase pumping reactors are arranged in a row inside the tank.
[0014] In some embodiments, the length direction of the core yoke of each core is the same as the arrangement direction of the three single-phase pumping reactors.
[0015] In some embodiments, the length direction of the core yoke of each core is perpendicular to the arrangement direction of the three single-phase pumping reactors.
[0016] Therefore, the three-phase integrated energy-draining reactor provided in this embodiment of the utility model, by immersing all three single-phase energy-draining reactors in the insulating oil of the same oil tank, only requires one oil tank. Compared with the prior art where each single-phase body requires its own oil tank, this reduces the material cost of manufacturing the oil tank and eliminates the need to maintain fireproof distances between the single-phase bodies as in the prior art. This makes the structure of the three single-phase energy-draining reactors more compact, thereby reducing the footprint of the three-phase integrated energy-draining reactor. By winding the energy-draining winding on the lower part of the iron core's side yoke, the energy-draining winding can be supported by the iron core's lower yoke, facilitating the maintenance of the energy-draining winding's position. Furthermore, by connecting the ends of the three pumping windings in a delta configuration inside the oil tank, and then leading them out to the outside of the oil tank via three pumping leads to connect them to the electrical equipment, the wiring of the three single-phase pumping reactors can be completed inside the oil tank at the factory when manufacturing the three-phase integrated pumping reactor. Compared with existing technologies, this saves the work of delta-connecting the three single-phase reactors on the construction site, thereby reducing the amount of wiring work on the construction site and improving the delivery efficiency of the pumping reactor.
[0017] Secondly, this utility model embodiment also provides an offshore wind power system, which includes a wind turbine, a transformer, and the three-phase integrated pumping reactor mentioned in the first aspect. The input terminal of the transformer is electrically connected to the output terminal of the wind turbine, and the output terminal of the transformer is electrically connected to the external power grid. The three main windings of the three-phase integrated pumping reactor are respectively electrically connected to the three-phase conductors of the external power grid.
[0018] The offshore wind power system provided in this embodiment of the present invention has the same beneficial effects as the above-mentioned three-phase integrated pumping reactor, which will not be repeated here. Attached Figure Description
[0019] Figure 1 : A schematic diagram of a three-phase integrated pumping reactor provided in an embodiment of this utility model;
[0020] Figure 2 : A structural diagram of an energy extraction winding and iron core provided for an embodiment of this utility model;
[0021] Figure 3 : A connection diagram of a power extraction coil provided in an embodiment of this utility model.
[0022] Among them, 1-oil tank; 2-iron core; 3-energy extraction winding; 4-cable; 5-energy extraction bushing; 6-iron core column; 7-iron core side yoke; 8-energy extraction lead wire; 9-iron core upper yoke; 10-energy extraction coil. Detailed Implementation
[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0024] Example 1:
[0025] like Figure 1 As shown in the figure, this utility model embodiment provides a three-phase integrated pumping reactor, which is applied in a power system.
[0026] like Figure 1 As shown, this three-phase integrated pumping reactor includes an oil tank 1 and single-phase pumping reactors. The oil tank 1 is filled with insulating oil. There are three single-phase pumping reactors, all of which are submerged in the insulating oil within the oil tank 1. Figure 2 and Figure 3 As shown, each single-phase pumping reactor includes a core 2 and a main winding ( Figure 2 (Not shown in the image) and the extraction winding 3, the core 2 is a single-phase three-limb core, the main winding is wound on the core column 6 of the core 2, and the extraction winding 3 is wound on the lower part of the core side yoke 7 of the core 2. The ends of the three extraction windings 3 are connected in a delta configuration inside the oil tank 1, and then led out to the outside of the oil tank 1 through three extraction leads 8 to be electrically connected to the electrical equipment.
[0027] For example, the voltage of the three-phase integrated pumping reactor in this embodiment can be 500kV.
[0028] For example, the oil tank 1 can be formed by welding steel plates to hold insulating oil and a single-phase pumping reactor.
[0029] For example, such as Figure 1 As shown, the three single-phase pumping reactors are single-phase pumping reactor A, single-phase pumping reactor B, and single-phase pumping reactor C.
[0030] Compared to the existing technology where each single-phase unit requires a separate oil tank, the three-phase integrated energy pumping reactor in this embodiment reduces the number of oil tanks from three to one by placing all three single-phase energy pumping reactors in the same oil tank 1. This reduces the material cost of manufacturing the oil tanks and eliminates the need to maintain fireproof distances between the single-phase units as required by the existing technology. This makes the structure of the three single-phase energy pumping reactors more compact, thereby reducing the footprint of the three-phase integrated energy pumping reactor.
[0031] like Figure 2 As shown, the core pillar 6 is located in the middle of the core 2, and the two core side yokes 7 are located on both sides of the core pillar 6.
[0032] By winding the energy extraction winding 3 on the lower part of the iron core side yoke 7 of the iron core 2, the energy extraction winding 3 can be supported by the iron core lower yoke of the iron core 2, which makes it easier to maintain the position of the energy extraction winding 3.
[0033] For example, such as Figure 1 As shown, the two ends (start and end) of the pumping winding 3 on single-phase pumping reactor A are marked as a and x, the two ends of the pumping winding 3 on single-phase pumping reactor B are marked as b and y, and the two ends of the pumping winding 3 on single-phase pumping reactor C are marked as c and z. All ends are electrically connected within the oil tank 1 via cable 4. (Combined with...) Figure 3 The six ends of the three energy extraction windings 3 are connected by a delta connection. The three energy extraction leads 8 are led out from the three ends a, b, and c respectively, so as to supply power to the electrical equipment after being electrically connected to the external electrical equipment.
[0034] For example, the electrical equipment can be lighting equipment or household electrical equipment on site for a three-phase integrated pumping reactor.
[0035] With the above setup, when manufacturing the three-phase integrated pumping reactor in the factory, the three single-phase pumping reactors can be connected at the oil tank 1 in the factory. Compared with the existing technology, this can save the work of connecting the three single-phase bodies at the construction site, thereby reducing the amount of wiring work at the construction site and improving the delivery efficiency of the pumping reactor.
[0036] Therefore, the three-phase integrated energy-draining reactor provided in this embodiment of the utility model only requires one oil tank 1, as all three single-phase energy-draining reactors are immersed in the insulating oil in the same oil tank 1. Compared with the prior art, where each single-phase body requires an oil tank, this reduces the material cost of manufacturing the oil tank and eliminates the need to maintain fireproof distances between the single-phase bodies as in the prior art. This makes the structure of the three single-phase energy-draining reactors more compact, thereby reducing the footprint of the three-phase integrated energy-draining reactor. By winding the energy-draining winding 3 on the lower part of the core side yoke 7 of the core 2, the energy-draining winding 3 can be supported by the core lower yoke of the core 2, making it easier to maintain the position of the energy-draining winding 3. Furthermore, by connecting the ends of the three energy extraction windings 3 in a delta configuration inside the oil tank 1, and then leading them out to the outside of the oil tank 1 via three energy extraction leads 8 to connect them to the electrical equipment, the wiring of the three single-phase energy extraction reactors can be completed inside the oil tank 1 at the factory when manufacturing the three-phase integrated energy extraction reactor. Compared with the existing technology, this can save the work of delta-connecting the three single-phase bodies on the construction site, thereby reducing the amount of wiring work on the construction site and improving the delivery efficiency of the energy extraction reactor.
[0037] In some embodiments, such as Figure 2 and Figure 3As shown, each energy extraction winding 3 includes two energy extraction coils 10, which are respectively disposed on the two iron core side yokes 7 of the iron core 2, and the two energy extraction coils 10 are connected in parallel.
[0038] like Figure 2 As shown, the three-phase integrated pumping reactor has six pumping coils 10, and the connection method of the six pumping coils 10 is as follows. Figure 3 As shown, in each energy extraction winding 3, the beginning ends of the two energy extraction coils 10 are connected to each other, and the end ends are connected to each other.
[0039] With the above settings, each pumping winding 3 can have advantages such as balanced magnetomotive force and high reliability.
[0040] In some embodiments, two pumping coils 10 are symmetrically arranged on both sides of the core column 6.
[0041] The above settings can make the structure of each energy extraction winding 3 symmetrical, effectively ensuring the magnetomotive force balance of each energy extraction winding 3.
[0042] In some embodiments, the conductors of the main winding are made of flat copper wire, round copper wire, flat aluminum wire, or round aluminum wire, and the conductors of the pumping coil 10 are made of flat copper wire, round copper wire, flat aluminum wire, or round aluminum wire.
[0043] The above settings can effectively reduce the wire resistance of the main winding and the wire resistance of the pumping coil 10, thereby reducing the heat generation and losses during the operation of the three-phase integrated pumping reactor.
[0044] In some embodiments, the three-phase integrated pumping reactor further includes a heat sink. The heat sink is disposed on the outside of the oil tank 1 and is in communication with the inside of the oil tank 1, and is used to drive the insulating oil to circulate between the heat sink and the oil tank 1 to dissipate heat from the insulating oil.
[0045] For example, the radiator is an existing plate radiator, which can be connected to the inside of the oil tank 1 through a circulation pipe.
[0046] The above settings can dissipate heat from the insulating oil, thereby preventing high-temperature faults during the operation of the three-phase integrated pumping reactor.
[0047] In some embodiments, such as Figure 1 As shown, the oil tank 1 is equipped with three energy extraction sleeves 5. The three energy extraction sleeves 5 are correspondingly set with three energy extraction leads 8, and each energy extraction lead 8 passes through the corresponding energy extraction sleeve 5 and is led out to the outside of the oil tank 1.
[0048] For example, the energy extraction sleeve 5 can be an existing sleeve.
[0049] By setting the energy extraction sleeve 5, the energy extraction lead 8 can be fixed and the insulation of the energy extraction lead 8 to the oil tank 1 can be ensured.
[0050] In some embodiments, three single-phase pumping reactors are arranged in a row inside the oil tank 1.
[0051] This allows for better control of the gap between each single-phase pumping reactor and the inner wall of tank 1, resulting in a more compact arrangement of the single-phase pumping reactor and tank 1.
[0052] In some examples, such as Figure 2 As shown, the length direction of the yoke 9 on the core of each core 2 is perpendicular to the arrangement direction of the three single-phase pumping reactors.
[0053] exist Figure 1 In this configuration, the three single-phase pumping reactors are arranged along the length of tank 1. In this case, as... Figure 1 As shown, the three single-phase pumping reactors are all vertically arranged along the length of the tank 1. This reduces the size of the three single-phase pumping reactors along the length of the tank 1, which helps to reduce the total length of the tank 1 and thus the total length of the three-phase integrated pumping reactor.
[0054] In some examples, combined Figure 1 The length direction of the yoke 9 on the core of each core 2 is the same as the arrangement direction of the three single-phase pumping reactors.
[0055] exist Figure 1 In this configuration, the three single-phase pumping reactors are arranged along the length of tank 1. Under these circumstances, it is understandable that the three single-phase pumping reactors are arranged laterally along the length of tank 1. This reduces the dimensions of the three single-phase pumping reactors in the width direction of tank 1, thus reducing the overall width of tank 1 and consequently the overall width of the three-phase integrated pumping reactor.
[0056] Example 2:
[0057] This utility model embodiment also provides an offshore wind power system, which includes a wind turbine, a transformer, and the three-phase integrated pumping reactor described in Embodiment 1. The input terminal of the transformer is electrically connected to the output terminal of the wind turbine, and the output terminal of the transformer is electrically connected to the external power grid. The three main windings of the three-phase integrated pumping reactor are respectively electrically connected to the three-phase conductors of the external power grid.
[0058] For example, the electrical energy output by the wind turbine is transformed by a transformer and then output to the external power grid. The connection methods between the transformer and the wind turbine, the connection methods between the transformer and the external power grid, and the connection methods between the three main windings of the three-phase integrated pumping reactor and the three-phase conductors of the external power grid are all existing technologies.
[0059] By connecting the three main windings of the three-phase integrated pumping reactor to the three-phase conductors of the external power grid, the three-phase integrated pumping reactor can perform reactive power compensation, harmonic suppression, and maintain the voltage stability of the external power grid.
[0060] This three-phase integrated pumping reactor can reduce the footprint and the amount of wiring work required at the construction site, thus reducing the wiring work required when delivering the offshore wind power system and improving the delivery speed of the offshore wind power system.
[0061] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.
Claims
1. A three-phase integrated pumping reactor, characterized in that, include: Oil tank (1), the inside of which is filled with insulating oil, and three energy extraction sleeves (5) are installed on the oil tank; and, There are three single-phase energy-absorbing reactors, and all three single-phase energy-absorbing reactors are immersed in insulating oil in the oil tank (1). Each single-phase energy-absorbing reactor includes an iron core (2), a main winding and an energy-absorbing winding (3). The iron core (2) is a single-phase three-column iron core. The main winding is wound on the iron core column (6) of the iron core (2). The energy-absorbing winding (3) is wound on the lower part of the iron core side yoke (7) of the iron core (2). Each of the energy extraction windings (3) includes two energy extraction coils (10), which are symmetrically arranged on the two iron core side yokes (7) of the iron core (2) and are connected in parallel to each other. The ends of the three energy extraction windings (3) are connected in a delta configuration inside the oil tank (1), and then led out to the outside of the oil tank (1) via three energy extraction leads (8) through three corresponding energy extraction sleeves (5) to be electrically connected to the electrical equipment. The wiring of the three unidirectional energy extraction reactors inside the oil tank (1) is completed in advance at the factory.
2. The three-phase integrated pumping reactor according to claim 1, characterized in that, The conductors of the main winding are made of flat copper wire, round copper wire, flat aluminum wire or round aluminum wire, and the conductors of the energy extraction coil (10) are made of flat copper wire, round copper wire, flat aluminum wire or round aluminum wire.
3. The three-phase integrated pumping reactor according to claim 1, characterized in that, It also includes the radiator; The radiator is located outside the oil tank (1) and is in communication with the inside of the oil tank (1) to drive the insulating oil to circulate between the radiator and the oil tank (1) to dissipate heat from the insulating oil.
4. The three-phase integrated pumping reactor according to claim 1, characterized in that, The three single-phase pumping reactors are arranged in a row inside the oil tank (1).
5. The three-phase integrated pumping reactor according to claim 4, characterized in that, The length direction of the core yoke (9) of each core (2) is the same as the arrangement direction of the three single-phase pumping reactors.
6. The three-phase integrated pumping reactor according to claim 4, characterized in that, The length direction of the core yoke (9) of each core (2) is perpendicular to the arrangement direction of the three single-phase pumping reactors.
7. An offshore wind power system, characterized in that, include: Wind turbine; A transformer, wherein the input terminal of the transformer is electrically connected to the output terminal of the wind turbine, and the output terminal of the transformer is electrically connected to the external power grid; The three-phase integrated pumping reactor according to any one of claims 1-6, wherein the three main windings of the three-phase integrated pumping reactor are respectively electrically connected to the three-phase conductors of the external power grid.