Pi-type 500kV line series reactor power distribution device with bypass

Abstract

The invention relates to the technical field of power distribution devices, in particular to a pi-type bypass 500kV line series reactor power distribution device, which comprises GIS equipment, and is characterized in that the GIS equipment comprises a bypass isolation switch and two series reactor isolation switches; the two series reactor isolation switches are located on the two sides of the bypass isolation switch respectively, the other sides of the series reactor isolation switches are connected with a GIS pipeline, and the GIS pipeline is connected with a pipe bus; the tubular bus is connected with the series reactor; the bypass isolation switch, the two series reactor isolation switches and the GIS pipeline are arranged in a pi shape. By implementing the device provided by the embodiment of the invention, the series reactor and the bypass of the line are not in the same vertical space, and the series reactor equipment or the bypass can be safely operated and maintained at intervals; the problem of safety risk caused by the fact that an electrified area and an unelectrified area are located in the same space in conventional arrangement is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution devices, and in particular to a π-type 500kV line series reactor power distribution device with bypass. Background Art

[0002] Against the backdrop of an inverse relationship between the spatial distribution of energy-rich areas and load centers, the power system exhibits significant characteristics in the dynamic evolution of both supply and demand. On the load side, there is a trend toward large-scale access, with the commissioning of large-capacity units becoming increasingly intensive. On the power supply side, the increasing penetration of renewable energy leads to fluctuating and random grid power. With this change, short-circuit current levels at key grid nodes are gradually approaching, and even exceeding, the breaking limits of circuit breakers. At the same time, with the further strengthening of the 500 kV main grid and the commissioning of large units, busbar short-circuit current levels at various hub substations on the 500 kV main grid are also continuing to rise, making short-circuit current control more difficult.

[0003] To address this issue, it is necessary to build a series reactor station in the middle of the 500 kV line and install a line series reactor, or install a line series reactor at the end of the line at the substation. Depending on the transmission capacity of the line, the installed 500 kV line series reactor can be designed with two coils or four coils. The primary wiring diagram is as follows Figure 1 As shown in the figure, isolating switches should be installed on both sides of the series resistor, and bypass isolating switches should be installed at the same time. Figure 2 As shown, the cross-section diagram is as follows Figure 3 As shown in the diagram, the main equipment in the power distribution system includes GIS (Gas Insulated Switchgear) devices on both sides of the series reactor, lightning arresters, series reactors, and coupling capacitors. The GIS equipment is located on both sides of the series reactor enclosure. All equipment is located below and roughly parallel to the transition span between the existing power distribution system and the line outgoing structure. When the line is operating in bypass mode, the series reactor equipment is de-energized, allowing related operation and maintenance work to proceed. However, the workspace is directly above the energized bypass line, posing a safety hazard.

[0004] Specifically, in existing solutions, the GIS power distribution equipment is placed on either side of the series reactor. This requires the GIS equipment to be split into two parts, resulting in a decentralized system and inconvenience in operation and maintenance. Furthermore, this arrangement forces the coupling capacitors, which need to be connected in parallel on both sides of the series reactor, to be placed at the edges of the series reactor. This also requires additional space between the phases of the series reactor for the connecting wires on both sides of the coupling capacitors, complicating wiring and limiting the compactness of the layout. To achieve bypass wiring, the existing solution requires the use of overhead high-span lines passing over the series reactor equipment and the GIS power distribution equipment. However, considering the height of the series reactor equipment and the safe distance for live working, the overhead high-span lines must be at least 24 meters above the ground. This requires structures approximately 30 meters high on both sides, making the solution relatively complex and uneconomical. In the existing solution, the series reactor equipment and the bypass high-span lines are arranged in an upper-lower relationship. Because they are in separate circuits, the series reactor equipment and the bypass high-span lines cannot be energized at the same time. However, this design means that when the series reactor equipment or overhead high-span lines are operated and maintained, the other party may still be energized, which poses certain safety risks.

[0005] Therefore, it is necessary to design a new device to ensure that the line series reactor and bypass are not in the same upper and lower spaces, so that the series reactor equipment or bypass interval can be safely operated and maintained; and avoid the safety risk of live areas and non-live areas being in the same space in conventional arrangements. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects of the prior art and provide a π-type 500kV line series reactor distribution device with bypass.

[0007] In order to solve the above technical problems, the object of the present invention is achieved through the following technical solutions: providing a π-type 500kV line series reactor distribution device with bypass, including GIS equipment, the GIS equipment including a bypass disconnector and two series reactor disconnectors; the two series reactor disconnectors are respectively located on both sides of the bypass disconnector, and the other side of the series reactor disconnector is connected to the GIS pipeline, and the GIS pipeline is connected to the busbar; the busbar is connected to the series reactor; the bypass disconnector, the two series reactor disconnectors and the GIS pipeline are arranged in a π shape.

[0008] A further technical solution is as follows: the busbar includes a line inlet busbar and a line outlet busbar, the line inlet busbar is connected to one of the GIS pipelines; the line outlet busbar is connected to the other GIS pipeline.

[0009] A further technical solution thereof is: it also includes a coupling capacitor, and the coupling capacitor is connected to the line inlet bus and the line inlet bus respectively through wires.

[0010] A further technical solution is: the GIS device is located on one side of the series reactor.

[0011] A further technical solution is as follows: a fence is provided around the periphery of the series reactor, and the GIS equipment is located on one side of the fence.

[0012] A further technical solution is: the line inlet busbar and the line inlet busbar are respectively located on the same side of the series reactor.

[0013] A further technical solution is: a lightning arrester is connected to the tube busbar.

[0014] A further technical solution is as follows: the series reactor includes a coil group, and the coil group includes a plurality of coils.

[0015] A further technical solution is: the coil group includes four coils, and the four coils are arranged in a positive direction.

[0016] A further technical solution is as follows: the coil group includes three coils, and the three coils are arranged in a triangle.

[0017] Compared with the prior art, the present invention has the following advantages: the present invention ensures that the series reactor and the bypass device are not in the same upper and lower spaces through a unique layout; the GIS device includes a bypass disconnector and two series reactor disconnectors, the two series reactor disconnectors are located on both sides of the bypass disconnector, and are connected to the busbar through the GIS pipeline, and the busbar is connected to the series reactor; this π-type layout makes the bypass disconnector, the series reactor disconnector and the GIS pipeline spatially separated, thereby effectively avoiding the situation where the live area and the non-live area coexist in the same space; through this layout, the series reactor equipment and the bypass device can be operated independently in different spaces, ensuring safe operation and maintenance, and eliminating the safety risks brought about by the coexistence of the live area and the non-live area in the traditional layout.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is the primary wiring diagram of the 500kV line series reactor installed in the existing technology;

[0021] Figure 2This is a plan layout diagram of the 500kV line series impedance installed in the existing technology;

[0022] Figure 3 This is a cross-sectional view of the 500kV line series impedance installed in the prior art;

[0023] Figure 4 This is a layout diagram of a π-type 500kV line series reactor power distribution device with bypass provided by an embodiment of the present invention;

[0024] Figure 5 This is an access layout diagram of a π-type 500kV line series reactor distribution device with bypass provided in an embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional view of an access to a π-type 500kV line series reactor power distribution device with bypass provided by an embodiment of the present invention;

[0026] Figure 7 A single-phase layout diagram of a double-coil π-type 500kV line series reactor power distribution device with bypass is provided for an embodiment of the present invention;

[0027] Figure 8 A single-phase arrangement diagram of three coils of a π-type 500kV line series reactor power distribution device with bypass is provided for an embodiment of the present invention;

[0028] Description of the symbols in the figure:

[0029] 10. Bypass disconnector; 20. Series resistor disconnector; 30. GIS pipeline; 40. Line inlet busbar; 50. Line outlet busbar; 60. Lightning arrester; 70. Coupling capacitor. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0032] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0033] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0034] In power systems, the inverse relationship between energy resource distribution and load centers creates challenges for the dynamic evolution of supply and demand, leading to short-circuit currents approaching or exceeding the circuit breaker's interrupting limits. To address this issue, series reactors must be installed in the middle or at the ends of 500 kV lines, complemented by GIS equipment and coupling capacitors. However, existing solutions suffer from dispersed equipment, complex wiring, and a non-compact layout. The high-span design also increases the solution's complexity and cost. Furthermore, the placement of series reactors above and below high-span bypass lines can pose safety risks during operation and maintenance.

[0035] To this end, an embodiment of the present invention also provides a π-type 500kV line series reactor distribution device with bypass, which ensures that the line series reactor and the bypass are not in the same upper and lower spaces, allowing the series reactor equipment or bypass intervals to be safely operated and maintained; and avoids the safety risk of live areas and non-live areas being in the same space in conventional arrangements.

[0036] This device utilizes a π-shaped 500kV line series reactor distribution device with bypass design, enabling the placement of line series reactors and bypass equipment in separate vertical spaces. Specifically, the GIS equipment, series reactor disconnector 20, bypass disconnector 10, and tubular busbars are arranged in a π-shaped pattern, physically separating the series reactor and bypass equipment. This design effectively provides a safe separation between the series reactor and the bypass, thus avoiding the safety risks associated with the coexistence of energized and de-energized areas in conventional layouts during equipment operation and maintenance.

[0037] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0038] See also Figure 4A π-type 500kV line series reactor power distribution device with bypass includes GIS equipment, which includes a bypass disconnector 10 and two series reactor disconnectors 20; the two series reactor disconnectors 20 are located on both sides of the bypass disconnector 10, and the other side of the series reactor disconnector 20 is connected to a GIS pipeline 30, which is connected to a busbar; the busbar is connected to a series inductor; the bypass disconnector 10, the two series reactor disconnectors 20 and the GIS pipeline 30 are arranged in a π shape.

[0039] In addition, the line side is accessed from above the GIS equipment.

[0040] In this embodiment, the core structure of the device adopts a π-type layout. That is, through a reasonable layout, all key devices are configured into three main parts: a bypass disconnector 10 and two series impedance disconnectors 20. These three parts form a π-type structure in layout. The specific layout is as follows:

[0041] As the core of the power distribution system, GIS equipment connects series reactors through integrated switch bays and conduits to complete power transmission and control. GIS equipment effectively avoids the environmental risks exposed by traditional switchgear while saving space and improving overall layout efficiency.

[0042] The bypass isolating switch 10 is provided between the two series impedance isolating switches 20 and is mainly responsible for realizing bypass operation when the equipment is under maintenance or bypass operation is required, ensuring that the current can continue to be transmitted when the main equipment fails, thereby avoiding shutdown of the entire system.

[0043] Two series reactor disconnectors 20, located on either side of the bypass disconnector 10, are primarily used to connect and disconnect the series reactors. Controlling these two switches allows for flexible management of the operation and maintenance of the series reactor equipment. One side of each series reactor disconnector 20 is connected to the GIS busbar via a GIS pipeline 30. The busbar serves as the electrical connection hub, transmitting power to the series reactors.

[0044] This device realizes the connection between the series impedance device and the power line through the above arrangement. The specific working principle is as follows:

[0045] During normal operation, current flows through the GIS pipeline 30, connected to the busbar, and then transmitted to the series reactor via the busbar to regulate the current. When maintenance or bypass operations are required, the bypass disconnector 10 is triggered, opening the bypass line to ensure that current bypasses the series reactor, preventing system downtime due to equipment failure. The series reactor disconnector 20 can be operated on both sides of the reactor as needed to control the connection or disconnection of the reactor and adjust the reactance value during power transmission.

[0046] By arranging the bypass disconnector 10 and the two series impedance disconnectors 20 on the same side, the arrangement space is greatly reduced, making the equipment configuration more compact and adapting to a limited space environment.

[0047] The π-type layout allows the power input and output lines to be concentrated on the same side of the series impedance device, which helps to simplify the overall wiring design, reduce wiring complexity, and reduce potential wiring errors and maintenance difficulties.

[0048] Since the series reactor equipment and bypass equipment are arranged in different parallel spaces, the risk of them working under power in the same space is avoided, thereby improving the safety of equipment maintenance.

[0049] By using pipes in the bypass compartment of GIS equipment to replace traditional overhead high-span lines, there are no exposed live parts in the bypass. This greatly reduces the safety risks of operation and maintenance, greatly simplifies the layout, and eliminates the high-span structure required for traditional overhead lines, which directly reduces equipment investment and maintenance costs.

[0050] This design scheme has a wide range of applicability and can be applied to 500kV line series reactors of various capacities and coil types. It can be used conveniently and efficiently for both the installation of series reactors and the installation of series reactors on substation busbars.

[0051] Specifically, in addition to conventional four-coil line series impedance devices, dual-coil and triple-coil line series impedance devices are also applicable to this solution, ensuring that different types of line devices can be compatible and give full play to the advantages of this design.

[0052] The device of this embodiment not only saves significant space and simplifies wiring, but also significantly reduces investment and maintenance costs. Furthermore, it improves the safety of equipment operation and maintenance, ensuring stable system operation. This technical solution provides a more efficient, economical, and safe solution for series impedance distribution devices in 500kV power systems.

[0053] At the same time, the device of this embodiment can also be directly applied to other power series equipment installation scenarios with bypass requirements.

[0054] In one embodiment, see Figures 4 to 6 The above-mentioned pipe bus includes a line inlet pipe bus 40 and a line outlet pipe bus 50. The line inlet pipe bus 40 is connected to one of the GIS pipelines 30; the line outlet pipe bus 50 is connected to the other GIS pipeline 30.

[0055] In this embodiment, the line inlet busbar 40 is connected to one GIS pipeline 30, and the line outlet busbar 50 is connected to another GIS pipeline 30. This arrangement ensures that current can flow smoothly through the series impedance device and circulate through the corresponding pipelines. This design simplifies the previously complex wiring method and ensures efficient use of space.

[0056] In one embodiment, see Figures 4 to 6 The above-mentioned π-type 500kV line series reactor power distribution device with bypass further includes a coupling capacitor 70, which is connected to the line inlet bus 40 and the line inlet bus 40 through wires.

[0057] In this embodiment, a coupling capacitor 70 is positioned between the inlet and outlet busbars and connected to the line inlet busbar 40 and the line outlet busbar 50 via conductors. The coupling capacitor 70 suppresses the transient recovery overvoltage (TRV) of the circuit breaker after the series reactor is installed, thereby ensuring line stability and voltage levels and effectively handling dynamic current fluctuations.

[0058] In one embodiment, see Figures 4 to 6 , the above-mentioned GIS equipment is located on one side of the series reactor.

[0059] In this embodiment, the GIS equipment is connected to other electrical components through gas-insulated pipes. The GIS design helps reduce air pollution and improves system safety and reliability, especially in high-voltage environments.

[0060] In one embodiment, see Figures 4 to 6 A fence is provided around the periphery of the above-mentioned series reactor, and the GIS equipment is located on one side of the fence.

[0061] In this embodiment, the fence not only provides physical isolation but also ensures safety during equipment operation. The fence effectively prevents external interference and provides sufficient operating space for maintenance personnel, reducing the risk of contact with high-voltage parts.

[0062] In one embodiment, see Figures 4 to 6 The above-mentioned road inlet busbar and line inlet busbar 40 are respectively located on the same side of the series reactor.

[0063] This design optimizes electrical connections and current flow paths, simplifies the overall layout of the equipment, and helps save space while reducing the complexity of installation and maintenance.

[0064] The device of this embodiment effectively solves the problems that may arise in traditional designs, such as complex wiring, insufficient space utilization, and low safety. This optimized design not only improves line reliability but also significantly reduces construction and maintenance costs, providing an efficient, energy-saving, and economical solution for high-voltage power line construction.

[0065] In one embodiment, see Figures 4 to 6 The above-mentioned tube busbar is connected with a lightning arrester 60.

[0066] In one embodiment, see Figures 6 to 8 The above-mentioned series inductor includes a coil group, and the coil group includes several coils.

[0067] In one embodiment, see Figure 6 The coil assembly described above consists of four coils arranged in a forward direction. This arrangement improves reactor stability and current distribution uniformity, better meeting the power transmission requirements of 500kV lines. This four-coil layout not only increases the capacity and efficiency of the equipment but also ensures reliable operation of the system under high-voltage conditions.

[0068] Specifically, four 7Ω coils are connected in series, configured as a dry, hollow-core structure. The four coils are arranged in a square. The circuit is introduced into the first coil via a tubular busbar, then passes through the second and third coils, before being output to the circuit via the fourth coil. In this square arrangement, the first and fourth coils are placed adjacent to each other, facilitating the parallel connection of coupling capacitors 70 at the entrance and exit points of the tubular busbar.

[0069] The distance between the coils is 13.5 meters, the distance from the coil to the fence is 10.5 meters, and the size of the string resistance fence is 88.5m×34.5m.

[0070] Considering the overall dimensions and weight of the string reactor, the transport road width is 4.5 meters, the turning radius of the crane travel road is 15 meters, and the turning radius of the equipment transport vehicle is 20 meters.

[0071] This device is suitable for 500kV line series reactors with four coils of various capacities and configurations. It can be used as a standard module for series reactor stations in the middle of 500kV transmission lines. It is also suitable for applications where four-coil series reactors are required, such as at substations at the end of 500kV transmission lines or between 500kV busbar sections in substations.

[0072] This design cleverly utilizes a four-coil square layout, placing the first and last coils adjacent to each other. This avoids the need for lengthy return lines typically associated with a linear four-coil layout. The resulting layout is more compact, saving floor space and facilitating daily operation and maintenance.

[0073] In one embodiment, see Figure 7The coil assembly described above includes two coils. This two-coil layout is typically suitable for applications with light loads or requiring low reactance. This design simplifies the device's construction and allows for efficient operation in lower power scenarios, while also reducing device size and saving space.

[0074] In one embodiment, see Figure 8 The above-mentioned coil group includes three coils, and the three coils are arranged in a triangle.

[0075] This arrangement provides a more balanced current distribution during reactor operation, while also improving the reactor's ability to withstand pressure and resist interference. This arrangement is particularly suitable for applications requiring higher currents and greater reactance, ensuring line stability and safety during high-current transmission.

[0076] The three coil group arrangements described above (four-coil forward, two-coil, and three-coil delta) demonstrate the flexibility and adaptability of the series reactor. Each arrangement has its own specific application scenarios and can be selected based on specific line requirements, load conditions, and space constraints, adapting coils to different situations. These design improvements not only optimize power system operating efficiency but also improve equipment reliability and safety.

[0077] The device of this embodiment is intended to solve some design defects existing in the prior art. Specifically, by adopting a π-type structure, the layout of the input and output lines of the series inductor is optimized, making the layout of the series reactor device more compact, improving space utilization, and simplifying the overall wiring scheme. At the same time, by utilizing GIS (gas insulated switchgear) technology, a bypass interval is set on one side of the series reactor device, replacing the traditional overhead high-span line layout, significantly reducing equipment investment and simplifying the overall design. In addition, the device of this embodiment adopts a separate space method for the layout of the series reactor device and the bypass device, thereby effectively avoiding the safety hazards of live operations and ensuring the safety of the operation and maintenance process.

[0078] Specifically, the GIS units are arranged in phases on either side of the series reactor equipment. Each single-phase GIS bay is equipped with a bypass disconnector bay (10 bays) and two series reactor circuit disconnector bays, arranged in a π-shaped configuration. The GIS units are connected to the series reactors via GIS piping (30) and busbars. All connecting lines are connected from the same side of the series reactor equipment, reducing equipment complexity.

[0079] The coupling capacitor 70 is arranged between the inlet and outlet tube busbars and connected to the tube busbars via wires. This arrangement can effectively simplify the wiring layout and improve the efficiency of space utilization.

[0080] The function and position of each component of the device of this embodiment are rationally planned to ensure the reliability and safety of the system.

[0081] Furthermore, the device of this embodiment is suitable not only for connecting to four-coil line series reactors, but also for two-coil and three-coil line series reactors. Its flexibility and applicability make it an efficient design solution that can meet the needs of different types of 500kV line series reactors.

[0082] The device of this embodiment is equally applicable to various types of series impedance devices. In addition to traditional four-coil series impedance devices, this embodiment can also be applied to two-coil and three-coil line series impedance devices. Regardless of the type of series impedance device, this solution provides a reasonable single-phase layout to ensure efficient operation.

[0083] This type of equipment requires different configurations when handling different currents or voltages. The device of this embodiment provides a dedicated design solution for dual-coil and triple-coil line series impedance devices. It still uses a π-type structure, effectively integrating the connections between various devices, simplifying the layout and ensuring the stability and safety of the power distribution device.

[0084] The device in this embodiment is highly versatile, adapting to various capacities and types of 500kV line series reactors. It can be used as a typical deployment module in both line and substation busbar installations. This innovative design fully considers the actual needs of the equipment, not only meeting the functional requirements of power equipment but also effectively reducing project investment costs.

[0085] At the same time, this solution can also be directly applied to other power series equipment installation scenarios with bypass requirements.

[0086] The device of this embodiment uses a π-shaped structure design to place the series impedance device and the input and output lines on the same side, and the coupling capacitor 70 can be conveniently arranged between the input and output lines, which greatly simplifies the wiring layout and improves space utilization efficiency.

[0087] The use of GIS technology to set up 10-compartment bypass disconnectors has successfully replaced the traditional overhead high-span line layout, significantly simplified the construction of power lines, and reduced the complexity and difficulty of construction of power equipment.

[0088] By arranging the series reactor equipment and the bypass device separately, the series reactor equipment and the bypass device are avoided from operating in the same upper and lower spaces, thereby ensuring the safety of equipment operation and maintenance and reducing the risk of live operations.

[0089] The device of this embodiment makes extensive use of GIS technology in its design and optimizes the layout of the power distribution device, which not only improves the stability and reliability of equipment operation, but also effectively reduces investment and construction costs, saving a lot of resources.

[0090] The π-shaped structure simplifies layout and reduces space usage while ensuring efficient system operation. By using GIS technology, the bypass disconnector is isolated from the series impedance equipment by 10 bays, avoiding potential safety hazards in the power system under high-voltage environments.

[0091] In summary, the device of this embodiment can be widely used in different power projects, especially in projects where series reactors are installed on 500kV transmission lines and substation busbars, which can significantly reduce construction and maintenance costs while improving the safety and reliability of the power system.

[0092] In one embodiment, the equipment is divided into independent modular units, each with complete functionality and capable of independent operation. For example, series reactors, bypass disconnectors 10, and GIS equipment can all be deployed as independent modules, allowing for flexible expansion based on demand. This modular design facilitates future system expansion or replacement of aging equipment, while also simplifying maintenance and commissioning.

[0093] To accommodate future increases in power load, an automated expansion mechanism should be designed. For example, during initial installation, corresponding expansion interfaces should be reserved. This allows for cost-effective system expansion by adding additional units or expansion modules in the future, without requiring a large-scale reconstruction of the original system.

[0094] The above-mentioned π-type 500kV line series reactor distribution device with bypass ensures that the series reactor and the bypass equipment are not in the same upper and lower spaces through a unique layout. Its GIS equipment includes a bypass disconnector 10 and two series reactor disconnectors 20. The two series reactor disconnectors 20 are located on both sides of the bypass disconnector 10 and are connected to the busbar via a GIS pipeline 30, and the busbar is connected to the series reactor. This π-type layout spatially separates the bypass disconnector 10, the series reactor disconnector 20 and the GIS pipeline 30, thereby effectively avoiding the situation where live and non-live areas coexist in the same space. Through this layout, the series reactor equipment and the bypass device can be operated independently in different spaces, ensuring safe operation and maintenance, and eliminating the safety risks brought about by the coexistence of live and non-live areas in the traditional layout.

[0095] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A π-type 500kV line series reactor power distribution device with bypass, characterized in that: The GIS device includes a bypass disconnector and two series reactor disconnectors; the two series reactor disconnectors are respectively located on both sides of the bypass disconnector, the other side of the series reactor disconnector is connected to the GIS pipeline, and the GIS pipeline is connected to the busbar; the busbar is connected to the series reactor; the bypass disconnector, the two series reactor disconnectors and the GIS pipeline are arranged in a π shape.

2. A π-type 500kV line series resistance distribution device with bypass according to claim 1, characterized in that: The pipe busbar includes a line inlet pipe busbar and a line outlet pipe busbar. The line inlet pipe busbar is connected to one of the GIS pipelines; the line outlet pipe busbar is connected to the other GIS pipeline.

3. A π-type 500kV line series resistance distribution device with bypass according to claim 2, characterized in that: It also includes a coupling capacitor, which is connected to the line inlet bus and the line inlet bus through wires.

4. A π-type 500kV line series resistance distribution device with bypass according to any one of claims 1 to 3, characterized in that: The GIS device is located on one side of the series reactor.

5. A π-type 500kV line series resistance power distribution device with bypass according to claim 4, characterized in that: A fence is provided around the outer periphery of the series reactor, and the GIS equipment is located on one side of the fence.

6. A π-type 500kV line series resistance power distribution device with bypass according to claim 4, characterized in that: The line inlet busbar and the line inlet busbar are respectively located on the same side of the series reactor.

7. A π-type 500kV line series resistance power distribution device with bypass according to claim 4, characterized in that: The tube busbar is connected with a lightning arrester.

8. The π-type 500kV line series resistance power distribution device with bypass according to claim 4, characterized in that: The series inductor includes a coil group, and the coil group includes a plurality of coils.

9. A π-type 500kV line series resistance power distribution device with bypass according to claim 8, characterized in that: The coil group includes four coils, and the four coils are arranged in a positive direction.

10. A π-type 500kV line series resistance power distribution device with bypass according to claim 8, characterized in that: The coil group includes three coils, and the three coils are arranged in a triangle.

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