CN224153781U - Z-shaped gas-insulated metal-enclosed switchgear - Google Patents
Z-shaped gas-insulated metal-enclosed switchgearInfo
- Publication number
- CN224153781U CN224153781U CN202520987570.8U CN202520987570U CN224153781U CN 224153781 U CN224153781 U CN 224153781U CN 202520987570 U CN202520987570 U CN 202520987570U CN 224153781 U CN224153781 U CN 224153781U
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- insulated metal
- enclosed switchgear
- shaped gas
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
本实用新型提供Z字型气体绝缘金属封闭开关设备，包括多个断路器间隔；各个断路器间隔平面呈一字型布置；每个断路器间隔包括三相的断路器组；每个断路器间隔的每相断路器组的出线侧安装可转动的第一连接结构，该第一连接结构通过连接母线，与相邻的另一个断路器间隔的同一相断路器组的进线侧可转动的第二连接结构连接，由此使各个断路器间隔首尾相连，形成Z字型气体绝缘金属封闭开关设备。本实用新型可以显著降低气体绝缘金属封闭开关设备的占地面积，有利于进出线方位的灵活设置，适用于各种地形条件和不同的接入系统方案；在Z字型气体绝缘金属封闭开关设备的两端可以任意增加断路器间隔并通过母线连接，便于后期扩建。
This invention provides a Z-shaped gas-insulated metal-enclosed switchgear, comprising multiple circuit breaker bays; each circuit breaker bay is arranged in a straight line; each circuit breaker bay includes a three-phase circuit breaker group; a rotatable first connecting structure is installed on the outgoing side of each phase circuit breaker group in each circuit breaker bay, and this first connecting structure is connected to a rotatable second connecting structure on the incoming side of the same phase circuit breaker group in an adjacent circuit breaker bay via a connecting busbar, thereby connecting the circuit breaker bays end to end to form a Z-shaped gas-insulated metal-enclosed switchgear. This invention can significantly reduce the footprint of gas-insulated metal-enclosed switchgear, facilitates flexible setting of incoming and outgoing line positions, and is suitable for various terrain conditions and different access system schemes; circuit breaker bays can be added arbitrarily at both ends of the Z-shaped gas-insulated metal-enclosed switchgear and connected via busbars, facilitating future expansion.
Description
Technical Field
The utility model relates to the technical field of pumped storage power station electric main wiring and gas insulation metal-enclosed switchgear, in particular to Z-shaped gas insulation metal-enclosed switchgear.
Background
Because of the characteristics of the pumped storage power station, the pumped storage power station is often built in mountain areas with steep terrains and complex geological conditions, the number of installed power stations is generally 4 or 6, a power system is connected through a 500kV primary voltage and one-circuit or two-circuit overhead transmission line, an angle type, 3/2 type, double bus, single bus subsection or bridge type wiring is generally adopted for a 500kV voltage side electric main wiring, and a gas insulated metal enclosed switchgear (GIS) is generally adopted for a high-voltage distribution device.
The pumped storage power station main power house is generally arranged under the ground with the burial depth of 200-300 m, the switching station is arranged in a ground area which is convenient to be connected with the underground power house, the length of a high-voltage outgoing line is moderate, the area of a platform of the switching station is reasonable, the amount of backfill engineering of excavation is controllable, the slope is not high after excavation, the ditch is far away from, and the overhead line is convenient to send out and the operation and maintenance are convenient. The ground switch station is a place for arranging the gas-insulated metal-enclosed switchgear, and whether the structure of the gas-insulated metal-enclosed switchgear reasonably and directly determines the area of the switch station and the problems of excavation backfill, side slope support and the like. Therefore, how to reduce the occupied area of the gas-insulated metal-enclosed switchgear, and facilitate flexible wire inlet and outlet, thereby facilitating connection with overhead lines is an important problem to be solved at present.
Disclosure of utility model
Aiming at the defects existing in the prior art, the utility model provides the Z-shaped gas-insulated metal-enclosed switchgear which can effectively solve the problems.
The technical scheme adopted by the utility model is as follows:
The utility model provides Z-shaped gas-insulated metal-enclosed switchgear which comprises a plurality of breaker intervals (1), wherein the planes of the breaker intervals (1) are arranged in a straight line shape, each breaker interval (1) comprises three-phase breaker groups (2), a rotatable first connecting structure (7A) is arranged on the outlet side of each phase of the breaker groups (2) of each breaker interval (1), and the first connecting structure (7A) is connected with a rotatable second connecting structure (7B) on the inlet side of the breaker groups (2) of the same phase of the adjacent other breaker intervals (1) through a connecting bus (8), so that the breaker intervals (1) are connected end to form the Z-shaped gas-insulated metal-enclosed switchgear.
Preferably, the line-in and line-out side planes of the breaker groups (2) of each phase of the breaker interval (1) are arranged in a straight line shape.
Preferably, the first connecting structure (7A) and the second connecting structure (7B) have the same structure and each comprise a housing structure (7-1) and a connecting bus jacket (7-2) rotatable with the housing structure (7-1), and the connecting bus jacket (7-2) is matched with the outer diameter of the connecting bus (8) and is used for clamping the end part of the connecting bus (8).
Preferably, the first connecting structure (7A) and the second connecting structure (7B) which are directly connected by the connecting bus bar (8) are arranged in the same axial direction with the same height of the connecting bus bar jacket (7-2).
Preferably, a fast grounding switch (11) is configured on the outgoing line side of the breaker group (2) of each phase and on the outgoing line side of the breaker group (2) of each phase.
Preferably, each phase of the breaker group (2) comprises a breaker (3), a current transformer (4), a disconnector (5), a grounding switch (6) and the first connection structure (7A) and the second connection structure (7B);
The second connection structure (7B) is connected to the incoming line end of the circuit breaker (3) after passing through the isolating switch (5) at the incoming line side and the current transformer (4) at the incoming line side;
The wire outlet end of the circuit breaker (3) is connected with the wire inlet of the first connecting structure (7A) after passing through the current transformer (4) at the wire outlet side and the isolating switch (5) at the wire outlet side;
The isolating switch (5) at the incoming line side and the isolating switch (5) at the outgoing line side are both connected with the grounding switch (6).
Preferably, the circuit breaker (3) and the current transformer (4) are of independent shells and independent air chamber structures, and the grounding switch (6) and the isolating switch (5) are integrally arranged and share the shells.
Preferably, the circuit breaker (3) is provided with a circuit breaker operating mechanism (10).
The Z-shaped gas-insulated metal-enclosed switchgear provided by the utility model has the following advantages:
The utility model provides Z-shaped gas-insulated metal-enclosed switchgear, which is constructed through the interface orientation of a connecting structure and the arrangement direction of a connecting bus, can obviously reduce the occupied area of the gas-insulated metal-enclosed switchgear, is convenient for finding out more scientific and reasonable ground switch station positions in the engineering area range, is favorable for flexibly arranging the orientation of an incoming line and an outgoing line, is suitable for various terrain conditions and different access system schemes, can be in one-to-one correspondence with the circuit breakers arranged in a plane, is convenient for operation and maintenance, can be arbitrarily increased in circuit breaker intervals at two ends of the Z-shaped gas-insulated metal-enclosed switchgear and is connected through the bus, is convenient for later extension, and is also convenient for additionally arranging a main bus so as to extend and modify an electric main wiring from a quadrangle into a 3/2 wiring.
Drawings
FIG. 1 is a schematic plan view of a zigzag gas-insulated metal-enclosed switchgear of the present utility model;
FIG. 2 is a schematic cross-sectional view of a typical zigzag type gas-insulated metal-enclosed switchgear of the present utility model;
In the figure, the circuit breaker is 1-a circuit breaker interval, 2-a circuit breaker group, 3-a circuit breaker, 4-a current transformer, 5-a disconnecting switch, 6-a grounding switch, 7-a connecting structure, 7-a first connecting structure, 7-B-a second connecting structure, 7-1-a shell structure, 7-2-a connecting bus jacket, 8-a connecting bus, 9-a main bus, 10-a circuit breaker operating mechanism and 11-a quick grounding switch.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The utility model provides Z-shaped gas-insulated metal-enclosed switchgear, which is constructed through the interface orientation of a connecting structure and the arrangement direction of a connecting bus, can obviously reduce the occupied area of the gas-insulated metal-enclosed switchgear, is convenient for finding out more scientific and reasonable ground switch station positions in the engineering area range, is favorable for flexibly arranging the orientation of an incoming line and an outgoing line, is suitable for various terrain conditions and different access system schemes, can be in one-to-one correspondence with the circuit breakers arranged in a plane, is convenient for operation and maintenance, can be arbitrarily increased in circuit breaker intervals at two ends of the Z-shaped gas-insulated metal-enclosed switchgear and is connected through the bus, is convenient for later extension, and is also convenient for additionally arranging a main bus so as to extend and modify an electric main wiring from a quadrangle into a 3/2 wiring.
As shown in fig. 1-2, the zigzag type gas-insulated metal-enclosed switchgear of the present utility model includes a plurality of breaker intervals 1, for example, M breaker intervals, M being a natural number greater than 1. In fig. 1, there are a total of 4 breaker intervals;
Each breaker interval 1 is arranged in a straight line shape in the plane, each breaker interval 1 comprises three-phase breaker groups 2, namely, each breaker interval 1 comprises 3 breaker groups 2 corresponding to three phases, and further, the incoming/outgoing line side plane of each phase breaker group 2 of each breaker interval 1 is arranged in a straight line shape, for example, in fig. 1, each phase breaker group 2 is provided with two incoming/outgoing line sides, so that one incoming/outgoing line side of all breaker groups of all breaker intervals is arranged in a straight line shape, and the other incoming/outgoing line side is arranged in a straight line shape.
The first connection structure 7A is rotatably arranged on the outgoing line side of each phase breaker group 2 of each breaker interval 1, the first connection structure 7A is connected with the second connection structure 7B which is rotatably arranged on the incoming line side of the same phase breaker group 2 of the adjacent other breaker interval 1 through a connection bus bar 8, thereby enabling the breaker intervals 1 to be connected end to form a Z-shaped gas insulated metal enclosed switchgear, specifically, in the figure 1, the first connection structure on the outgoing line side below the 1 st breaker interval is connected to the second connection structure on the incoming line side above the 2 nd breaker interval through the connection bus bar, and then the first connection structure on the outgoing line side below the 2 nd breaker interval is connected to the 2 nd breaker interval through the 2 nd breaker interval, thereby forming a Z shape.
In the utility model, the first connecting structure 7A and the second connecting structure 7B have the same structure, as shown in figure 2, and comprise a shell structure 7-1 and a connecting bus jacket 7-2 which is rotatable with the shell structure 7-1, wherein the connecting bus jacket 7-2 is matched with the outer diameter of a connecting bus 8 and is used for clamping the end part of the connecting bus 8, and further, the connecting bus jacket 7-2 is rotatable, so that the first connecting structure 7A and the second connecting structure 7B which are directly connected through the connecting bus 8 are in Z shape, and the connecting bus jackets 7-2 are axially arranged in the same direction at the same height to form one Z-shaped stroke.
The outgoing line side of each phase breaker group 2, and the outgoing line side of each phase breaker group 2, are provided with a quick ground switch 11. The circuit breaker 3 is provided with a circuit breaker operating mechanism 10.
Each phase of breaker group 2 comprises a breaker 3, a current transformer 4, a disconnecting switch 5, a grounding switch 6, a first connecting structure 7A and a second connecting structure 7B, wherein an outgoing line of the second connecting structure 7B is connected to an incoming line end of the breaker 3 after passing through the disconnecting switch 5 on the incoming line side and the current transformer 4 on the incoming line side, and an outgoing line end of the breaker 3 is connected with an incoming line of the first connecting structure 7A after passing through the current transformer 4 on the outgoing line side and the disconnecting switch 5 on the outgoing line side, wherein the disconnecting switch 5 on the incoming line side and the disconnecting switch 5 on the outgoing line side are both connected with the grounding switch 6.
In practical application, the breaker 3 and the current transformer 4 are both independent shells and independent air chamber structures, and the grounding switch 6 and the isolating switch 5 are generally integrated and share the shells. The connecting structure 7 is an independent shell structure and is commonly separated from adjacent circuit breakers by a common air chamber, and the devices of each phase of circuit breaker group 2 can be directly connected through flanges or can be connected through buses.
One embodiment is described below:
As shown in figures 1-2, the Z-shaped gas-insulated metal-enclosed switchgear of the utility model is composed of M breaker intervals 1, wherein each breaker interval 1 comprises a three-phase breaker group 2, each phase breaker group 2 comprises a breaker 3, a current transformer 4, a disconnecting switch 5, a grounding switch 6 and a connecting structure 7, the breaker 3 and the current transformer 4 are respectively of an independent shell and an independent air chamber structure, the grounding switch 6 is generally integrated with the disconnecting switch 5 and provided with a shared shell, the connecting structure 7 is of an independent shell structure and is generally provided with an air chamber shared with adjacent breaker intervals, and all the equipment of each phase breaker group can be directly connected through a self-contained flange or can be connected through a bus. M is a natural number greater than 1.
The planes of the M breaker intervals 1 are arranged in a straight line, and each phase of breaker groups 2 of different breaker intervals 1 are connected end to end through a connecting bus 8 and a connecting structure 7, so that the Z-shaped gas-insulated metal-enclosed switchgear comprising the M breaker intervals is formed.
The main equipment of the breaker group 2 is a breaker 3, and two sides of the breaker 3 are respectively provided with a current transformer 4, a disconnecting switch 5, a grounding switch 6 and a connecting structure 7.
The two ends of the connecting bus 8 are respectively the wire inlet and outlet sides of two adjacent groups of circuit breakers 3, and are the same electrical node, and the wire inlet and outlet can be arranged on the side of the circuit breaker operating mechanism 10 or on the opposite side of the circuit breaker operating mechanism 10 according to engineering requirements.
The in-out line side is provided with a quick grounding switch 11 according to the characteristics of the connecting loop.
The main equipment of the Z-shaped gas-insulated metal-enclosed switchgear is a breaker 3, the type of electric main wiring is determined by the connection relation among the breakers 3, current transformers 4 are arranged on two sides of the breaker 3 and are used for respectively obtaining data for relay protection, automatic devices and measuring meters, isolating switches 5 are arranged on two sides of the breaker 3 and are used for obtaining safe and reliable isolating fractures by opening the isolating switches 5 when the breaker 3 is disconnected and a circuit does not have current, grounding switches 6 are arranged on the isolating switches 5 in a matching mode and are used for closing the grounding switches on the isolating switches 5 close to the overhaul equipment side and guaranteeing the safety of overhaul maintainers when the circuit is disconnected and overhauled, an incoming line loop comprises an incoming line loop and an outgoing line loop, the incoming line loop is connected with a generator motor of an underground factory building, the outgoing line loop is connected to a power system through an overhead line, and a quick grounding switch 11 is arranged on the ultrahigh voltage overhead outgoing line side, a large-length high-voltage cable and the gas-insulated metal-enclosed power transmission line (GIL) so as to quickly eliminate fault current.
The utility model constructs the Z-shaped gas-insulated metal-enclosed switchgear only through the interface orientation of the connection structure and the arrangement orientation of the connection bus without changing the basic structure of the electric main wiring, can obviously reduce the occupied area of the gas-insulated metal-enclosed switchgear, is convenient for finding out more scientific and reasonable ground switch station positions in the engineering area range, has double installation positions of the gas-insulated metal-enclosed switchgear with the Z-shaped structure compared with the gas-insulated metal-enclosed switchgear with the field-shaped structure, is favorable for flexibly arranging the orientation of the incoming and outgoing lines, is suitable for various topography conditions and different access system schemes, has one-to-one correspondence with the control cabinet thereof, is convenient for operation and maintenance, can arbitrarily increase the circuit breaker interval at two ends of the Z-shaped gas-insulated metal-enclosed switchgear, is convenient for post-expansion by bus connection, is also convenient for additionally arranging the main wiring to expand and reform the electric main wiring from a quadrangle into 3/2.
The engineering of a large pumped storage power station adopting the technical scheme of the utility model is taken as an example to further describe with reference to the accompanying drawings:
A large pumped storage power station is provided with 4 water pump water turbine-generator motor sets with single-machine capacity of 300MW, the generator motor-transformer sets are connected by adopting a one-machine one-high-voltage side combined unit, the two combined units are connected to a gas-insulated metal-enclosed switchgear of a ground switching station through two-circuit 500kV XLPE high-voltage cables, and the two-circuit overhead transmission lines are connected into a power system through 500kV primary voltage.
The 500kV voltage side of the power station adopts 2-in and 2-out quadrangle connection, wherein two-circuit incoming wires are XLPE high-voltage cables with single length of 1400 meters, and two-circuit outgoing wires are overhead lines with power transmission distance of 54 km. The ground switch station is arranged on a hillside at the upstream side of the lower reservoir, and a diesel generator room and a constant temperature and humidity warehouse are arranged on the same platform as the switch station, so that the arrangement space is limited.
Because the XLPE high-voltage cable is longer and the voltage value and the duration of the withstand voltage test are different from those of the gas-insulated metal-enclosed switchgear, the high-voltage cable withstand voltage test tool is particularly arranged; the high-voltage bushing, the lightning arrester, the capacitive voltage transformer and the outgoing line metal framework are arranged on the outgoing line side, and a space for arranging a high-voltage cable test tool and a test device is not reserved, so that the Z-shaped gas-insulated metal-enclosed switchgear can flexibly arrange an incoming line loop and an outgoing line loop at two ends of the circuit breaker.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which is also intended to be covered by the present utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520987570.8U CN224153781U (en) | 2025-05-19 | 2025-05-19 | Z-shaped gas-insulated metal-enclosed switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520987570.8U CN224153781U (en) | 2025-05-19 | 2025-05-19 | Z-shaped gas-insulated metal-enclosed switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN224153781U true CN224153781U (en) | 2026-04-21 |
Family
ID=99474651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520987570.8U Active CN224153781U (en) | 2025-05-19 | 2025-05-19 | Z-shaped gas-insulated metal-enclosed switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN224153781U (en) |
-
2025
- 2025-05-19 CN CN202520987570.8U patent/CN224153781U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR0126219B1 (en) | Gas insulating distribution apparatus | |
| WO2021130704A1 (en) | Compact electric switching substation integrated into a lattice tower for connection of active and passive users to a high-voltage electric grid and use of said substation for connecting an electric vehicle charging station to a high- voltage electric grid | |
| KR100893534B1 (en) | Gas insulated switchgear with improved space utilization | |
| CN110380340B (en) | Substation power distribution device | |
| CN101150246B (en) | 110kV and higher modular transformer substation and its construction method | |
| CN212543289U (en) | GIS bus with function of realizing low-voltage side delta wiring of 500kV main transformer | |
| CN210779513U (en) | Power distribution device of transformer substation | |
| CN222563371U (en) | Gas-insulated switchgear with parallel bus system | |
| CN212784490U (en) | 35kV transformer substation 35kV side main circuit breaker spacing system based on 35kV GIS equipment | |
| CN203813222U (en) | Two-input two-output PT2 power distribution station with subsections | |
| CN113922265B (en) | 500KV HGIS power distribution device | |
| EP2408075A1 (en) | Air-insulated switchgear | |
| CN104037622A (en) | Two-in and two-out sectionalized power distribution station | |
| CN223066641U (en) | Medium-low voltage common box GIL for transformer substation | |
| CN121417206B (en) | Gas-insulated transmission line system supporting multi-loop mutual standby | |
| CN217087302U (en) | Outgoing line arrangement structure for switching outgoing line intervals in substation | |
| CN217427474U (en) | Gas insulation switch cabinet | |
| CN203813221U (en) | PT1 type power distribution station | |
| JP3169251B2 (en) | Gas insulated switchgear | |
| CN218448956U (en) | Layout-compact prefabricated substation and power generation system | |
| JPH0515020A (en) | Gas insulated switchgear | |
| CN120200100A (en) | A high voltage switchgear and a method for determining phase spacing | |
| CN203326444U (en) | High-altitude 750kV grading type controllable high-resistance device | |
| CN110729635A (en) | A gas-insulated metal-enclosed switchgear | |
| CN102570328B (en) | 66kv side GIS (gas insulated switchgear) structure of 500kv main transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |