GIS multi-channel modularized incoming and outgoing line switch interval structure

Abstract

The utility model discloses a gas insulated switchgear (GIS) multichannel modularized inlet and outlet wire switch interval structure, which belongs to the technical field of high-voltage switches and comprises a bottom frame, a circuit breaker, a current transformer and a three-way special-shaped steering unit, the circuit breaker and the current transformer are horizontally connected, and one sides, far away from each other, of the circuit breaker and the current transformer are connected with a three-position isolation grounding switch. The upper part of the three-position isolation grounding switch is connected with the three-way special-shaped steering unit. The left and right sides of the three-way special-shaped steering unit are connected with the cable connection terminal unit. The upper portion of the three-way upward unit is connected with the three-way special-shaped steering unit, and the left side and the right side of the three-way special-shaped steering unit are connected with the cable connection terminal unit. Through the multi-channel incoming and outgoing line modular design, multi-channel free and flexible switching can be realized, multiple use conditions are ensured, the rated and redundant through-current capability of the high-voltage switch is flexibly and effectively exerted, and the multi-group low-current combined on-off condition is satisfied. The whole structure is simple and compact, the occupied space is small, and the installation and maintenance workload is small.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-voltage switches, in particular to a GIS multi-channel modular inlet and outlet line switch interval structure. Background Art

[0002] Gas-insulated metal-enclosed switchgear is a metal-enclosed switchgear and control equipment that uses gas at a pressure higher than atmospheric pressure as the insulating medium in at least one part. GIS (GAS INSULATED SWITCHGEAR) is the English abbreviation for gas-insulated fully enclosed switchgear. GIS consists of circuit breakers, disconnectors, grounding switches, transformers, lightning arresters, busbars, connectors and outgoing line terminals. These devices or components are all enclosed in a metal grounded casing, which is filled with SF6 insulating gas at a certain pressure, so it is also called SF6 fully enclosed switchgear.

[0003] With the continuous iteration and update of the power system, problems such as substation design capacity expansion and equipment upgrade are common. The standard modular expansion and upgrade of switchgear equipment is imperative.

[0004] The conventional traditional line transformer GIS interval design is a one-input and one-output switch interval design. The output or input line can only meet the current in and out of a single terminal. At present, the current load of a typical design and commissioning project is about 30% of the rated design current carrying capacity. In the case of large redundancy of GIS power load capacity and fixed input and output line planning conditions, it is impossible to meet the multi-channel change capability of power transmission and transformation scheduling under special conditions, and it is impossible to flexibly and effectively exert the rated and redundant current carrying capacity of the high-voltage switch. In view of the single input and output line of the line transformer GIS interval, it is impossible to meet the parallel multi-circuit input and output line conditions. Therefore, it is very necessary to design a GIS multi-channel modular input and output line switch interval structure. Utility Model Content

[0005] In order to solve the problem that when the GIS power load capacity redundancy is large and the input and output line planning is fixed, the ability of multi-channel changes in power transmission and transformation scheduling under special conditions cannot be met, and the rated and redundant current-carrying capacity of the high-voltage switch cannot be flexibly and effectively exerted, the utility model provides a GIS multi-channel modular input and output line switch interval structure.

[0006] The utility model is realized by the following technical solutions:

[0007] A GIS multi-channel modular in-and-out line switch interval structure comprises a base frame, a circuit breaker, a current transformer and a three-way special-shaped steering unit. The circuit breaker and the current transformer are horizontally connected and installed on the base frame, and the sides away from each other are respectively connected and installed with a three-position isolating and earthing switch. The upper part of the three-position isolating and earthing switch is connected and installed with the three-way special-shaped steering unit, and the left and right ports of the three-way special-shaped steering unit are respectively connected and installed with a cable connection terminal unit; it also includes a three-way upward unit that can be horizontally connected and installed with the three-position isolating and earthing switch, the upper part of the three-way upward unit is connected and installed with the three-way special-shaped steering unit, and the left and right ports of the three-way special-shaped steering unit are respectively connected and installed with a cable connection terminal unit; it also includes a first end cover that can block the three-way upward unit and the three-position isolating and earthing switch.

[0008] A further improvement of the utility model is that at least two three-way special-shaped steering units are provided and installed in series with each other.

[0009] A further improvement of the utility model is that it also comprises a grounding protection copper bar connected to the three-station isolating grounding switch.

[0010] A further improvement of the utility model further comprises a control cabinet arranged on one side of the circuit breaker.

[0011] A further improvement of the utility model is that the three-position isolating grounding switch and the three-way upward unit are installed through flange connection.

[0012] A further improvement of the utility model is that the cable connection terminal unit is a four-way structure, including upper, lower, left and right ports; and also includes a second end cover capable of blocking the port of the cable connection terminal unit.

[0013] A further improvement of the utility model is that the three-way special-shaped steering unit comprises a three-way steering unit shell having left and right ports and a lower port; insulating support basins are respectively installed on the three ports of the three-way steering unit shell; three contact seats are respectively positioned and installed on each insulating support basin; a phase sequence steering conductor is connected and installed on the contact seat of the bottom port of the three-way steering unit shell, the phase sequence steering conductor is connected to a transition contact seat through a transition straight conductor, and the transition contact seat is respectively connected to the contact seats corresponding to the left and right ports of the three-way steering unit shell through special-shaped conductors.

[0014] A further improvement of the utility model is that an inspection hole is provided in the middle of the housing of the three-way steering unit.

[0015] It can be seen from the above technical solutions that the beneficial effects of the utility model are:

[0016] According to the working conditions, the three-way upward unit and the corresponding three-way special-shaped turning unit and cable connection terminal unit can be freely added or subtracted. It is a plug-and-play power supply interval equipment. Through the modular design of multi-channel inlet and outlet lines, it can realize multi-channel free and flexible switching according to the needs, ensuring a variety of working conditions. It can flexibly and effectively exert the rated and redundant current capacity of the high-voltage switch to meet the combined breaking conditions of multiple groups of small currents (capacitive, inductive). The overall structure is simple and compact, with small space occupation and small installation and maintenance workload. It meets the overall transportation, flexible application, easy implementation and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a cross-sectional schematic diagram of a specific implementation method of the utility model.

[0019] Figure 2 It is a schematic diagram of the top structure of a specific implementation method of the utility model.

[0020] Figure 3 It is a schematic diagram of the electrical principle of a specific implementation method of the utility model.

[0021] Figure 4 for Figure 1 Schematic diagram of the structure in directions A and C.

[0022] Figure 5 for Figure 2 Schematic diagram of the structure in the B and D directions.

[0023] Figure 6 It is a structural schematic diagram of a three-way special-shaped steering unit according to a specific implementation mode of the utility model.

[0024] Figure 7 for Figure 6 Schematic diagram of phase sequence steering of conductors in phase sequence steering.

[0025] Figure 8 It is a schematic diagram of the left-side phase sequence steering of a three-way special-shaped steering unit according to a specific implementation manner of the utility model.

[0026] Fig. 9 It is a schematic diagram of right-side phase sequence steering of a three-way special-shaped steering unit according to a specific implementation manner of the utility model.

[0027] In the attached figure: 1. three-way upward unit, 2. cable connection terminal unit, 3. three-way special-shaped steering unit, 31. three-way steering unit shell, 32. contact seat, 33. insulating support basin, 34. phase sequence steering conductor, 35. transition straight conductor, 36. transition contact seat, 37. special-shaped conductor, 38. inspection hole, 4. three-position isolating grounding switch, 5. circuit breaker, 6. current transformer, 7. grounding protection copper bar, 8. chassis, 9. control cabinet. DETAILED DESCRIPTION

[0028] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0029] like Figure 1-5 As shown, the utility model discloses a GIS multi-channel modular inlet and outlet switch interval structure, including a base frame 8, a circuit breaker 5, a current transformer 6 and a plurality of three-way special-shaped steering units 3, the circuit breaker 5 and the current transformer 6 are horizontally connected and installed on the base frame 8, and the sides away from each other are respectively connected and installed with a three-position isolating grounding switch 4, that is, the three-position isolating grounding switch 4, the circuit breaker 5, the current transformer 6 and the three-position isolating grounding switch 4 are horizontally connected and installed in sequence from front to back; the three-position isolating grounding switch 4 has three ports: front, rear and upper; the upper parts of two three-position isolating grounding switches 4 are respectively connected and installed with the three-way special-shaped steering units 3, and the three-way special-shaped steering units 3 have three ports: left, right and lower. That is, the upper port of the three-position isolating earthing switch 4 is connected and installed with the lower port of the three-way special-shaped steering unit 3; the left and right ports of the three-way special-shaped steering unit 3 are respectively connected and installed with a cable connection terminal unit 2; it also includes a three-way upward unit 1, the shell structure of the three-way upward unit 1 is similar to the structure of the three-position isolating earthing switch 4, and has three ports: front, rear and upper. The three-way upward unit 1 can be horizontally connected and installed with the three-position isolating earthing switch 4, the upper port of the three-way upward unit 1 is connected and installed with the lower port of the three-way special-shaped steering unit 3, and the left and right ports of the three-way special-shaped steering unit 3 are respectively connected and installed with a cable connection terminal unit 2; it also includes a first end cover that can block the three-way upward unit 1 and the three-position isolating earthing switch 4.

[0030] When the three-way upward unit 1 is not assembled, one horizontal port (front or rear) of the three-position isolating grounding switch 4 is connected to the circuit breaker 5 (or current transformer 6), and the other horizontal port of the three-position isolating grounding switch 4 is blocked by the first end cover, thereby forming a double-input and double-output working condition. When the three-way upward unit 1 is assembled, one horizontal port (front or rear) of the three-position isolating grounding switch 4 is connected to the circuit breaker 5 (or current transformer 6), and the other horizontal port of the three-position isolating grounding switch 4 is connected to the corresponding horizontal port of the three-way upward unit 1, and the horizontal port of the three-way upward unit 1 at the edge is blocked by the first end cover, thereby flexibly forming a multi-input and multi-output form (typically four-input and four-output). This GIS multi-channel modular inlet and outlet switch interval structure can freely increase or decrease the three-way upward unit 1 and the corresponding three-way special-shaped turning unit 3 and the cable connection terminal unit 2 according to the working conditions. It is a plug-and-play power supply interval device. Through the modular design of multi-channel inlet and outlet lines, it can realize multi-channel free and flexible switching according to needs, ensuring a variety of working conditions, and can flexibly and effectively exert the rated and redundant current capacity of the high-voltage switch to meet the combined breaking conditions of multiple groups of small currents (capacitive, inductive). The overall structure is simple and compact, occupies a small space, and has a small installation and maintenance workload. It meets the overall transportation, flexible application in place, easy to implement, and good practicality.

[0031] The cable connection terminal unit 2 is equipped with a standard plug-in cable head, which is plug-and-play and quick and convenient.

[0032] There are at least two three-way special-shaped steering units 3, which are installed in series with each other, and can be flexibly assembled according to working conditions to achieve convenience and flexibility in use.

[0033] It also includes a grounding copper bar 7 connected to the three-position isolation grounding switch 4 and a control cabinet 9 arranged on one side of the circuit breaker 5. Grounding is achieved through the grounding copper bar 7, and the control cabinet 9 is arranged on one side of the circuit breaker 5 to achieve compact spatial layout.

[0034] The three-position isolating grounding switch 4 is installed with the three-way upward unit 1 through a flange connection, which is convenient and reliable.

[0035] The cable connection terminal unit 2 has a four-way structure, including upper, lower, left and right ports, and also includes a second end cover capable of blocking the port of the cable connection terminal unit 2. It can realize horizontal outlet, vertical upward outlet and vertical downward outlet, achieving convenience and flexibility in use.

[0036] Among them, Figure 6-9As shown, the three-way special-shaped steering unit 3 includes a three-way steering unit housing 31 made of aluminum alloy with left and right ports and a lower port; insulating support basins 33 are respectively installed on the three ports of the three-way steering unit housing 31; three contact seats 32 are respectively positioned and installed on each insulating support basin 33; the contact seat 32 at the bottom port of the three-way steering unit housing 31 is connected and installed with a phase sequence steering conductor 34, and the phase sequence steering conductor 34 is connected to a transition contact seat 36 through a transition straight conductor 35, and the transition contact seat 36 is respectively connected to the contact seat 32 corresponding to the left and right ports of the three-way steering unit housing 31 through a special-shaped conductor 37. The three-way special-shaped steering unit 3 has a compact structure and a reasonable layout. The phase sequence steering conductor 34 and the transition straight conductor 35 are threaded and detachably connected and installed, ensuring the convenience of assembly and adjustment, and better applicability. The steering docking of the current loop can be realized, and the loop flow in the three-way direction can be completed.

[0037] Furthermore, a maintenance hole 38 is provided in the middle of the three-way steering unit housing 31. The maintenance hole 38 allows for convenient maintenance of the interior.

[0038] The overall structure of the GIS multi-channel modular inlet and outlet switch bay is a frame structure, which can be used to place vehicle flat panels to meet the special needs of vehicle-mounted and mobile substations.

[0039] In the GIS multi-channel modular inlet and outlet switch spacing structure, when the three-way upward unit 1 is not assembled, one horizontal port (front or rear) of the three-position isolating grounding switch 4 is connected to the circuit breaker 5 (or current transformer 6), and the other horizontal port of the three-position isolating grounding switch 4 is blocked by the first end cover, thereby forming a double-input and double-output working condition. When the three-way upward unit 1 is assembled, one horizontal port (front or rear) of the three-position isolating grounding switch 4 is connected to the circuit breaker 5 (or current transformer 6), and the other horizontal port of the three-position isolating grounding switch 4 is connected to the corresponding horizontal port of the three-way upward unit 1, and the horizontal port of the three-way upward unit 1 at the edge is blocked by the first end cover, thereby flexibly forming a multi-input and multi-output form (typically four-input and four-output). This GIS multi-channel modular inlet and outlet switch interval structure can freely increase or decrease the three-way upward unit 1 and the corresponding three-way special-shaped turning unit 3 and the cable connection terminal unit 2 according to the working conditions. It is a plug-and-play power supply interval device. Through the modular design of multi-channel inlet and outlet lines, it can realize multi-channel free and flexible switching according to needs, ensuring a variety of working conditions, and can flexibly and effectively exert the rated and redundant current capacity of the high-voltage switch to meet the combined breaking conditions of multiple groups of small currents (capacitive, inductive). The overall structure is simple and compact, occupies a small space, and has a small installation and maintenance workload. It meets the overall transportation, flexible application in place, easy to implement, and good practicality.

[0040] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0041] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A GIS multi-channel modular inlet and outlet switch compartment structure, characterized in that: The invention comprises a base frame (8), a circuit breaker (5), a current transformer (6) and a three-way special-shaped steering unit (3), wherein the circuit breaker (5) and the current transformer (6) are horizontally connected and installed on the base frame (8), and a three-position isolating grounding switch (4) is respectively connected and installed on one side away from each other, the upper part of the three-position isolating grounding switch (4) is connected and installed with the three-way special-shaped steering unit (3), and the left and right ports of the three-way special-shaped steering unit (3) are respectively connected and installed with a cable connection terminal unit (2); the invention also comprises a three-way upward unit (1) capable of being horizontally connected and installed with the three-position isolating grounding switch (4), the upper part of the three-way upward unit (1) is connected and installed with the three-way special-shaped steering unit (3), and the left and right ports of the three-way special-shaped steering unit (3) are respectively connected and installed with a cable connection terminal unit (2); and the invention also comprises a first end cover capable of blocking the three-way upward unit (1) and the three-position isolating grounding switch (4).

2. The GIS multi-channel modular inlet and outlet switch spacing structure according to claim 1 is characterized in that: At least two three-way special-shaped steering units (3) are provided and are installed in series with each other.

3. The GIS multi-channel modular inlet and outlet switch spacing structure according to claim 1 is characterized in that: It also includes a grounding protection copper busbar (7) connected to the three-position isolating grounding switch (4).

4. The GIS multi-channel modular inlet and outlet switch spacing structure according to claim 1 is characterized in that: It also includes a control cabinet (9) arranged on one side of the circuit breaker (5).

5. The GIS multi-channel modular inlet and outlet switch spacing structure according to claim 1 is characterized in that: The three-position isolating grounding switch (4) is installed with the three-way upward unit (1) through a flange connection.

6. The GIS multi-channel modular inlet and outlet switch spacing structure according to claim 1 is characterized in that: The cable connection terminal unit (2) has a four-way structure, comprising upper, lower, left and right ports; and further comprising a second end cover capable of sealing the port of the cable connection terminal unit (2).

7. The GIS multi-channel modular inlet and outlet switch spacing structure according to claim 1 is characterized in that the three-way The special-shaped steering unit (3) comprises a three-way steering unit housing (31) having left and right ports and a lower port; insulating support basins (33) are respectively installed on the three ports of the three-way steering unit housing (31); three contact seats (32) are respectively positioned and installed on each insulating support basin (33); a phase sequence steering conductor (34) is connected and installed on the contact seat (32) at the bottom port of the three-way steering unit housing (31); the phase sequence steering conductor (34) is connected to a transition contact seat (36) via a transition straight conductor (35); and the transition contact seat (36) is respectively connected to the contact seats (32) corresponding to the left and right ports of the three-way steering unit housing (31) via a special-shaped conductor (37).

8. The GIS multi-channel modular inlet and outlet switch spacing structure according to claim 7 is characterized in that: An inspection hole (38) is provided in the middle of the three-way steering unit housing (31).

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