10kV parallel capacitor device

Abstract

The utility model relates to a 10kV parallel capacitor device, and belongs to the field of capacitors. Comprising an isolating switch mechanism, a dry-type air-core series reactor group, a capacitor group mechanism and a fence, the isolating switch mechanism and the dry-type air-core series reactor group are connected through a copper busbar, and the dry-type air-core series reactor group and the capacitor group mechanism are connected through a copper busbar; the capacitor bank mechanism comprises a capacitor bank main body frame, a discharge coil profile steel frame, a capacitor bank and a plurality of oil-immersed discharge coils, the capacitor bank main body frame is fixedly connected with the discharge coil profile steel frame, the capacitor bank is stacked on the capacitor bank main body frame in a three-phase mode, and the oil-immersed discharge coils are installed on the discharge coil profile steel frame. And each phase in the capacitor bank is connected through a BV wire single-core cable in a one-to-one correspondence manner. According to the utility model, the layout of equipment is compact and reasonable, the usage amount of supporting post insulators, connecting busbars and steel frameworks is reduced, the occupied area of the equipment is reduced, and the anti-seismic performance of the equipment is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of capacitors, and more particularly to a 10kV parallel capacitor device. Background Technology

[0002] Within the capacitor industry, optimizing product performance and reducing unit energy consumption while ensuring product quality is a continuous pursuit. Therefore, capacitor manufacturers are constantly optimizing the structure of their designed capacitor banks, conducting extensive research and application, resulting in significant economic and social benefits. 10kV capacitor banks are widely used in urban and suburban substations, where space constraints are particularly critical, making continuous optimization and improvement of the bank's structure imperative. The oil-immersed, fully sealed discharge coil installation and wiring structure is a key component ensuring stable system operation. With the rapid development of power grid construction, designing aesthetically pleasing, simple, reliable, and easy-to-install products remains a focal point in the industry.

[0003] Traditional oil-immersed discharge coils require vertical installation and are relatively large. In the past, they were generally installed using an independent frame, which resulted in complex wiring, large area occupation, and limited and inconvenient maintenance space. They also required a lot of materials such as steel profiles, insulators, and busbars. Furthermore, the separate frame installation of the discharge coil also led to low seismic performance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a 10kV parallel capacitor device to solve the above-mentioned problem.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A 10kV parallel capacitor device includes: a disconnecting switch mechanism, a dry-type air-core series reactor group, a capacitor bank mechanism, and a fence. The dry-type air-core series reactor group and the capacitor bank mechanism are arranged inside the fence. The disconnecting switch mechanism and the dry-type air-core series reactor group, as well as the dry-type air-core series reactor group and the capacitor bank mechanism, are connected by copper busbars. The disconnecting switch mechanism and the capacitor bank mechanism are connected by a busbar bridge. The capacitor bank mechanism includes a capacitor bank main frame, a discharge coil steel frame, a capacitor bank, and multiple oil-immersed discharge coils. The capacitor bank main frame and the discharge coil steel frame are fixedly connected. The three phases of the capacitor bank are stacked on the capacitor bank main frame. The multiple oil-immersed discharge coils are installed on the discharge coil steel frame and are connected one-to-one with each phase of the capacitor bank through BV single-core cables.

[0006] The beneficial effects of this utility model are as follows: the discharge coil steel frame and the capacitor bank main frame are connected to each other to form an integral unit, and the oil-immersed discharge coil is connected to each phase of the capacitor bank through a BV single-core cable. Compared with the traditional independent installation and wiring of the discharge coil steel frame, this method can better utilize the space within the enclosure, making the equipment layout more compact and reasonable. It reduces the amount of supporting post insulators, connecting busbars and steel frames used, reduces the size of the enclosure and the overall footprint of the equipment, and enhances the seismic performance of the equipment, meeting the requirements for use in areas with high seismic intensity. At the same time, it simplifies and streamlines wiring, facilitates the observation of operating status during equipment inspection, and reduces the difficulty of maintenance.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the dry-type air-core series reactor group is stacked in three phases, and each phase of the dry-type air-core series reactor group is connected to each phase of the capacitor group through the copper busbar.

[0009] The beneficial effects of adopting the above-mentioned further scheme are: both the dry-type air-core series reactor group and the capacitor group are stacked in three phases and connected one-to-one by copper busbars, which helps to reduce the footprint of the equipment and make the equipment layout more compact and reasonable.

[0010] Furthermore, each phase of the capacitor bank is equipped with a zinc oxide surge arrester. The zinc oxide surge arrester is installed on the main frame of the capacitor bank. The zinc oxide surge arrester on each phase of the capacitor bank is connected to the copper busbar on each phase of the dry-type air-core series reactor group through the high-voltage terminal connection line of the zinc oxide surge arrester.

[0011] The beneficial effect of adopting the above-mentioned further scheme is that the copper busbar on each phase of the dry-type air-core series reactor group is connected to the electrical input terminal of each phase of the capacitor group in sequence through the high-voltage end connection line of the zinc oxide surge arrester and the zinc oxide surge arrester, which helps to improve the safety protection performance of the capacitor group.

[0012] Furthermore, each phase of the capacitor bank includes a front-row capacitor bank and a rear-row capacitor bank, and both the front-row capacitor bank and the rear-row capacitor bank include multiple capacitor units arranged side by side.

[0013] The beneficial effects of adopting the above-mentioned further scheme are: it helps to form a three-layer double-row structure of the capacitor bank in space, and reduces the footprint of the capacitor bank while ensuring its performance.

[0014] Furthermore, the front capacitor unit input terminals, the front capacitor unit output terminals of the multiple capacitor units in the front capacitor group, the rear capacitor unit input terminals of the multiple capacitor units in the rear capacitor group, and the rear capacitor unit output terminals of the multiple capacitor units in the rear capacitor group are all connected through the BV single-core cable.

[0015] The advantage of adopting the above-mentioned further scheme is that it facilitates the connection of multiple capacitor units in a single-phase capacitor bank.

[0016] Furthermore, the oil-immersed discharge coil is provided with a discharge coil inlet, a discharge coil outlet, and a discharge coil intermediate end. The discharge coil steel frame is equipped with porcelain rod-shaped support insulators corresponding to the inlet, outlet, and outlet ends of the front and rear capacitor units for each phase of the capacitor bank. A copper busbar is provided on the main frame of the capacitor bank. One end of the BV single-core cable connecting the inlets of multiple front capacitor units is connected to the dry-type air-core series reactor group via the copper busbar. One end of the BV single-core cable, which is fixed to the porcelain rod-shaped post insulator and connected to the inlet of the discharge coil, is fixed to the porcelain rod-shaped post insulator and connected to the inlet of the multiple rear capacitor units. The other end of the BV single-core cable, which is fixed to the porcelain rod-shaped post insulator and connected to the outlet of the discharge coil, is connected to the outlet of the discharge coil. The other end is connected to the copper busbar bus terminal through the copper busbar. The copper busbar bus terminal and the disconnecting switch mechanism are connected through the busbar bridge.

[0017] Furthermore, a differential pressure intermediate potential terminal is provided on the steel frame of the discharge coil, and the intermediate end of the discharge coil is connected to the differential pressure intermediate potential terminal through the BV wire single-core cable.

[0018] The beneficial effects of adopting the above-mentioned further solutions are: it facilitates the formation of a differential pressure protection wiring method, thus protecting the safe operation of the capacitor bank.

[0019] Furthermore, the disconnector mechanism includes: a disconnector steel bracket, a three-phase disconnector, and a disconnector N-stage. The three-phase disconnector and the disconnector N-stage are both mounted on the disconnector steel bracket, and the copper busbar bus terminal and the disconnector N-stage are connected through the busbar bridge.

[0020] The beneficial effects of adopting the above-mentioned further solutions are: it facilitates the formation of phase voltage protection wiring and protects the safe operation of the capacitor bank.

[0021] Furthermore, each phase of the dry-type air-core series reactor group is connected to each phase of the three-phase disconnecting switch through the copper busbar.

[0022] The beneficial effects of adopting the above-mentioned further scheme are: it helps to create a clear break in the three-phase disconnecting switch during maintenance and to directly ground the three phases, thus ensuring maintenance safety. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0024] Figure 2 A front view of the overall structure provided for an embodiment of this utility model;

[0025] Figure 3 A top view of the overall structure provided for an embodiment of this utility model;

[0026] Figure 4 An isometric view of the capacitor bank mechanism provided in an embodiment of this utility model;

[0027] Figure 5 A side view of the capacitor bank mechanism provided in an embodiment of this utility model.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Disconnecting switch mechanism; 2. Dry-type air-core series reactor group; 3. Capacitor bank mechanism; 4. Fence; 5. Copper busbar; 6. BV single-core cable; 7. Busbar bridge; 11. Steel bracket for disconnecting switch; 12. Three-phase disconnecting switch; 13. Neutral (N) level disconnecting switch; 31. Main frame of capacitor bank; 32. Steel frame of discharge coil; 33. Capacitor bank; 34. Oil-immersed discharge coil; 35. Zinc oxide surge arrester; 36. High-voltage terminal connection wire of zinc oxide surge arrester. 37. Copper busbar terminal; 38. Porcelain rod-shaped post insulator; 39. Differential voltage intermediate potential terminal; 331. Front capacitor bank; 332. Rear capacitor bank; 341. Discharge coil inlet terminal; 342. Discharge coil outlet terminal; 343. Discharge coil intermediate terminal; 3311. Front capacitor unit inlet terminal; 3312. Front capacitor unit outlet terminal; 3321. Rear capacitor unit inlet terminal; 3322. Rear capacitor unit outlet terminal. Detailed Implementation

[0030] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0031] like Figures 1 to 5As shown, a 10kV parallel capacitor bank includes: a disconnecting switch mechanism 1, a dry-type air-core series reactor group 2, a capacitor bank mechanism 3, and a fence 4. The dry-type air-core series reactor group 2 and the capacitor bank mechanism 3 are disposed within the fence 4. The disconnecting switch mechanism 1 and the dry-type air-core series reactor group 2, as well as the dry-type air-core series reactor group 2 and the capacitor bank mechanism 3, are connected by copper busbars 5. The disconnecting switch mechanism 1 and the capacitor bank mechanism 3 are connected by a busbar bridge 7. The capacitor bank mechanism 3 includes a capacitor bank main frame 31, a discharge coil steel frame 32, a capacitor bank 33, and multiple oil-immersed discharge coils 34. The capacitor bank main frame 31 and the discharge coil steel frame 32 are fixedly connected. The three phases of the capacitor bank 33 are stacked on the capacitor bank main frame 31. The multiple oil-immersed discharge coils 34 are installed on the discharge coil steel frame 32 and are connected one-to-one with each phase of the capacitor bank 33 via BV single-core cables 6.

[0032] It should be noted that, in the technical solution of this utility model, BV wire (copper core PVC insulated wire) is a type of wire widely used in household, commercial and industrial electrical equipment.

[0033] The beneficial effects of this utility model are as follows: the discharge coil steel frame and the capacitor bank main frame are connected to each other to form an integral unit, and the oil-immersed discharge coil is connected to each phase of the capacitor bank through a BV single-core cable. Compared with the traditional independent installation and wiring of the discharge coil steel frame, this method can better utilize the space within the enclosure, making the equipment layout more compact and reasonable. It reduces the amount of supporting post insulators, connecting busbars and steel frames used, reduces the size of the enclosure and the overall footprint of the equipment, and enhances the seismic performance of the equipment, meeting the requirements for use in areas with high seismic intensity. At the same time, it simplifies and streamlines wiring, facilitates the observation of operating status during equipment inspection, and reduces the difficulty of maintenance.

[0034] Preferred, such as Figure 2 As shown, the dry-type air-core series reactor group 2 is stacked in three phases, and each phase of the dry-type air-core series reactor group 2 is connected to each phase of the capacitor group 33 through the copper busbar 5.

[0035] The advantages of adopting the above preferred scheme are: both the dry-type air-core series reactor group and the capacitor group are stacked in three phases and connected one-to-one by copper busbars, which helps to reduce the footprint of the equipment and make the equipment layout more compact and reasonable.

[0036] Preferred, such as Figure 2 and Figure 3As shown, each phase of the capacitor bank 33 is equipped with a zinc oxide surge arrester 35. The zinc oxide surge arrester 35 is installed on the main frame 31 of the capacitor bank. The zinc oxide surge arrester 35 on each phase of the capacitor bank 33 is connected to the copper busbar 5 on each phase of the dry-type air-core series reactor group 2 through the high-voltage end connection line 36 of the zinc oxide surge arrester.

[0037] The advantages of adopting the above-mentioned preferred scheme are: the copper busbars on each phase of the dry-type air-core series reactor group are connected to the electrical input terminals of each phase of the capacitor group in sequence through the high-voltage end connection line of the zinc oxide surge arrester and the zinc oxide surge arrester, which helps to improve the safety performance of the capacitor group.

[0038] Preferred, such as Figure 4 As shown, each phase of the capacitor bank 33 includes a front capacitor bank 331 and a rear capacitor bank 332, and both the front capacitor bank 331 and the rear capacitor bank 332 include multiple capacitor units arranged side by side.

[0039] The advantages of adopting the above preferred scheme are: it helps to form a three-layer double-row structure of the capacitor bank in space, and reduces the footprint of the capacitor bank while ensuring the performance of the capacitor bank.

[0040] Preferred, such as Figure 4 and Figure 5 As shown, the front capacitor unit input terminal 3311, the front capacitor unit output terminal 3312 of the multiple capacitor units in the front capacitor group 331, the rear capacitor unit input terminal 3321 of the multiple capacitor units in the rear capacitor group 332, and the rear capacitor unit output terminal 3322 of the multiple capacitor units in the rear capacitor group 332 are all connected through the BV single-core cable 6.

[0041] The advantage of adopting the above preferred scheme is that it facilitates the connection of multiple capacitor units in a single-phase capacitor bank.

[0042] Preferred, such as Figure 4 and Figure 5As shown, the oil-immersed discharge coil 34 is provided with a discharge coil inlet 341, a discharge coil outlet 342, and a discharge coil intermediate end 343. The discharge coil steel frame 32 is provided with porcelain rod-shaped post insulators 38 corresponding to the inlet 3311, outlet 3312, inlet 3321, and outlet 3322 of each phase of the capacitor bank 33. A copper busbar bus terminal 37 is provided on the main frame 31 of the capacitor bank. One end of the BV single-core cable 6 connecting multiple inlet 3311 of the front capacitor units is connected to the dry-type air-core series reactor group via the copper busbar 5. 2. One end of the BV single-core cable 6, which connects to the output terminals 3312 of the multiple front-row capacitor units, is fixed to the porcelain rod-shaped post insulator 38 and then connected to the input terminals 3321 of the multiple rear-row capacitor units. The other end of the BV single-core cable 6, which connects to the output terminals 3322 of the multiple rear-row capacitor units, is fixed to the porcelain rod-shaped post insulator 38 and then connected to the output terminal 342 of the discharge coil. The other end is connected to the copper busbar bus terminal 37 through the copper busbar 5. The copper busbar bus terminal 37 and the disconnecting switch mechanism 1 are connected through the busbar bridge 7.

[0043] It should be noted that in the technical solution of this utility model, the BV single-core cable 6 connecting the output terminals 3312 of the multiple front-row capacitor units and the BV single-core cable 6 connecting the input terminals 3321 of the multiple rear-row capacitor units are the same BV single-core cable 6. This BV single-core cable 6 is also fixed on the porcelain rod-shaped support insulator 38 on the discharge coil steel frame 32, corresponding to the output terminals 3312 of the front-row capacitor units and the input terminals 3321 of the rear-row capacitor units.

[0044] Preferred, such as Figure 4 and Figure 5 As shown, a differential pressure intermediate potential terminal 39 is provided on the discharge coil steel frame 32, and the discharge coil intermediate terminal 343 is connected to the differential pressure intermediate potential terminal 39 through the BV wire single core cable 6.

[0045] The advantages of adopting the above preferred scheme are: it facilitates the formation of a differential pressure protection wiring method, thus protecting the safe operation of the capacitor bank.

[0046] Preferred, such as Figure 3As shown, the disconnector mechanism 1 includes: a disconnector steel bracket 11, a three-phase disconnector 12, and a disconnector N-stage 13. The three-phase disconnector 12 and the disconnector N-stage 13 are both mounted on the disconnector steel bracket 11. The copper busbar bus terminal 37 and the disconnector N-stage 13 are connected by the busbar bridge 7.

[0047] It should be noted that "N-level" in the technical solution of this utility model refers to the neutral point of the disconnecting switch.

[0048] The advantages of adopting the above preferred scheme are: it facilitates the formation of phase voltage protection wiring and protects the safe operation of the capacitor bank.

[0049] Preferred, such as Figure 3 As shown, each phase of the dry-type air-core series reactor group 2 is connected to each phase of the three-phase disconnecting switch 12 through the copper busbar 5.

[0050] The beneficial effect of adopting the above preferred scheme is that it facilitates the control of the current in the dry-type air-core series reactor group by the three-phase disconnecting switch.

[0051] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A 10kV parallel capacitor device, characterized in that, include: The system includes a disconnecting switch mechanism (1), a dry-type air-core series reactor group (2), a capacitor bank mechanism (3), and a fence (4). The dry-type air-core series reactor group (2) and the capacitor bank mechanism (3) are located inside the fence (4). The disconnecting switch mechanism (1) and the dry-type air-core series reactor group (2) are connected to each other and the dry-type air-core series reactor group (2) and the capacitor bank mechanism (3) are connected by a copper busbar (5). The disconnecting switch mechanism (1) and the capacitor bank mechanism (3) are connected by a busbar bridge (7). The capacitor bank structure (3) includes a capacitor bank main frame (31), a discharge coil steel frame (32), a capacitor bank (33), and multiple oil-immersed discharge coils (34). The capacitor bank main frame (31) and the discharge coil steel frame (32) are fixedly connected. The capacitor bank (33) is stacked in three phases on the capacitor bank main frame (31). Multiple oil-immersed discharge coils (34) are installed on the discharge coil steel frame (32) and are connected to each phase of the capacitor bank (33) through a BV single-core cable (6).

2. The 10kV parallel capacitor device according to claim 1, characterized in that, The dry-type air-core series reactor group (2) is stacked in three phases, and each phase of the dry-type air-core series reactor group (2) is connected to each phase of the capacitor group (33) through the copper busbar (5).

3. The 10kV parallel capacitor device according to claim 2, characterized in that, Each phase of the capacitor bank (33) is equipped with a zinc oxide surge arrester (35). The zinc oxide surge arrester (35) is installed on the main frame (31) of the capacitor bank. The zinc oxide surge arrester (35) on each phase of the capacitor bank (33) is connected to the copper busbar (5) on each phase of the dry-type air-core series reactor group (2) through the high voltage terminal connection line (36) of the zinc oxide surge arrester.

4. The 10kV parallel capacitor device according to claim 3, characterized in that, Each phase of the capacitor bank (33) includes a front capacitor bank (331) and a rear capacitor bank (332), and both the front capacitor bank (331) and the rear capacitor bank (332) include multiple capacitor units arranged side by side.

5. The 10kV parallel capacitor device according to claim 4, characterized in that, The front capacitor unit input terminals (3311), the front capacitor unit output terminals (3312), the rear capacitor unit input terminals (3321), and the rear capacitor unit output terminals (3322) of the multiple capacitor units in the front capacitor group (331) are all connected through the BV single-core cable (6).

6. The 10kV parallel capacitor device according to claim 5, characterized in that, The oil-immersed discharge coil (34) is provided with a discharge coil inlet (341), a discharge coil outlet (342), and a discharge coil intermediate end (343). The discharge coil steel frame (32) is provided with porcelain rod-shaped support insulators (38) for each phase of the capacitor bank (33), corresponding to the inlet (3311), outlet (3312), inlet (3321), and outlet (3322) of the front row capacitor unit. The capacitor bank main frame (31) is provided with a copper busbar terminal (37). One end of the BV single-core cable (6) connecting the input terminals (3311) of multiple front-row capacitor units is connected to the dry-type air-core series reactor group (2) via the copper busbar (5), and the other end is fixed to the porcelain rod-shaped post insulator (38) and then connected to the discharge coil input terminal (341). One end of the BV single-core cable (6) connecting the output terminals (3312) of multiple front-row capacitor units is fixed to the porcelain rod-shaped post insulator (38) and then connected to the discharge coil input terminal (341). One end of the BV single-core cable (6) connected to the multiple rear capacitor unit inlet terminals (3321) and the multiple rear capacitor unit outlet terminals (3322) is fixed on the ceramic rod-shaped post insulator (38) and then connected to the discharge coil outlet terminal (342). The other end is connected to the copper busbar bus terminal (37) through the copper busbar (5). The copper busbar bus terminal (37) and the disconnecting switch mechanism (1) are connected through the busbar bridge (7).

7. The 10kV parallel capacitor device according to claim 6, characterized in that, The discharge coil steel frame (32) is provided with a differential pressure intermediate potential terminal (39), and the discharge coil intermediate terminal (343) is connected to the differential pressure intermediate potential terminal (39) through the BV line single core cable (6).

8. The 10kV parallel capacitor device according to claim 6, characterized in that, The disconnector mechanism (1) includes: a disconnector steel bracket (11), a three-phase disconnector (12) and a disconnector N-stage (13). The three-phase disconnector (12) and the disconnector N-stage (13) are both mounted on the disconnector steel bracket (11). The copper busbar bus terminal (37) and the disconnector N-stage (13) are connected by the busbar bridge (7).

9. A 10kV parallel capacitor device according to claim 8, characterized in that, Each phase of the dry-type air-core series reactor group (2) is connected to each phase of the three-phase disconnecting switch (12) through the copper busbar (5).

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