CN217984268U - Arrangement structure of ultrahigh-voltage gas-insulated metal-enclosed switchgear - Google Patents
Arrangement structure of ultrahigh-voltage gas-insulated metal-enclosed switchgear Download PDFInfo
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- CN217984268U CN217984268U CN202222240418.2U CN202222240418U CN217984268U CN 217984268 U CN217984268 U CN 217984268U CN 202222240418 U CN202222240418 U CN 202222240418U CN 217984268 U CN217984268 U CN 217984268U
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Abstract
The utility model belongs to the technical field of high-voltage switch, a super high voltage gas-insulated metal-enclosed switchgear arrangement structure is disclosed, the feeder side of the circuit breaker unit adopts a horizontal incoming and outgoing line mode, the first switching unit connected with the circuit breaker unit realizes the dual functions of leading out the corner of the feeder side bus and integrating the grounding switch, the overall height of the switch equipment on the feeder side can be effectively reduced, meanwhile, the maintenance space on the upper side of the circuit breaker is reserved, and the super high voltage gas-insulated metal-enclosed switchgear arrangement structure has the technical advantages of convenient maintenance, maintenance and the like; the bus side of the circuit breaker unit adopts a vertical incoming and outgoing line mode, the bus side isolating switch, the bus side isolating and grounding combination device and the first and second main bus units are connected in an integrated mode, the main bus units are integrally arranged in a 'product' shape, the number of used transition units in the prior art scheme is greatly reduced, the overall height of equipment can be effectively reduced, the overall transportation of the equipment is realized, and the installation and transportation cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of high tension switchgear, in particular to superhigh pressure gas-insulated metal-enclosed switchgear arrangement structure.
Background
The gas insulated metal enclosed switchgear is an important device of a power system, and along with the continuous development of power technology, the industry puts forward higher requirements on the aspects of element integration, occupied space, installation period, inspection maintenance and the like.
For the field of ultrahigh voltage systems, particularly 363kV and 420kV, in the traditional arrangement of double buses of gas-insulated metal-enclosed switchgear, as shown in fig. 1, generally, both bus-side and feeder-side outgoing lines are vertically arranged on a horizontal circuit breaker unit 6, a transition two-way/three-way/four-way switching unit is required to connect between a bus-side isolating switch 8 and a three-phase box-split main bus unit, so that many parts are required, the arrangement height is high, the whole interval transportation cannot be met, the main bus and the transition switching unit need to be removed in shape, the transportation cost is high, the field installation period is long, and the risk potential of the equipment is increased; the arrangement height of the feeder line side operating element is high, and inspection and maintenance are inconvenient; the overhaul space in the equipment interval is smaller, and the maintenance is not convenient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a super high pressure gas-insulated metal-enclosed switchgear arrangement structure solves the whole integrated transportation and the low level inspection maintenance problem of present super high pressure field switchgear.
The utility model discloses a realize through following technical scheme:
an arrangement structure of an ultrahigh-voltage gas-insulated metal-enclosed switchgear comprises a breaker unit, wherein a bus-side current transformer unit, a bus-side isolating switch, a bus-side isolating and grounding combination device and a main bus unit are arranged on the bus side of the breaker unit;
a feeder side current transformer unit, a feeder isolation switch and a first switching unit are arranged on the feeder side of the breaker unit; the first switching unit is horizontally connected to a feeder side of the circuit breaker unit, the upper end of the first switching unit is connected with a feeder side current transformer, the feeder side current transformer is vertically arranged, and the upper end of the feeder side current transformer is connected with a feeder isolation switch;
the main bus unit comprises a first main bus and a second main bus which are respectively arranged in a delta shape, the static sides of a phase A of the bus side disconnecting switch and a phase C of the bus side disconnecting switch are inclined, and the static side of a phase B of the bus side disconnecting switch is straight;
the static sides of the phase A of the bus side isolation and grounding combination device and the phase C of the bus side isolation and grounding combination device are inclined; and the bus side isolation grounding combination device B is straight out from the static side.
Further, the first switching unit is integrated with a grounding switch.
Further, the bus side isolating switch A phase is connected with the first main bus A, and the bus side isolating switch C phase is connected with the first main bus C; the bus side isolating switch B is directly connected with the first main bus B;
the bus side isolation and grounding combination device A is connected with a second main bus A, the bus side isolation and grounding combination device C is connected with a second main bus C, and the bus side isolation and grounding combination device B is directly connected with a second main bus B.
Furthermore, an overhaul space is reserved in an area between the bus side and the feeder side and above the breaker unit.
Furthermore, the feeder line isolating switch is horizontally arranged, and the outer end of the feeder line isolating switch is connected with a quick grounding switch.
Furthermore, the bus side of the circuit breaker unit is a vertical incoming and outgoing line which is connected with a bus side current transformer.
Furthermore, the bus side disconnecting switch and the bus side disconnecting and grounding combined device are both vertically arranged, the side ends are connected with the bus side current transformer through the second switching unit, and the upper ends are directly connected with the main bus unit.
Further, the bus side current transformer unit is vertically arranged and connected to the circuit breaker unit.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses an arrangement structure of an ultrahigh pressure gas-insulated metal-enclosed switchgear, wherein a horizontal incoming and outgoing line mode is adopted at the feeder line side of a circuit breaker unit, and a first switching unit integrated grounding switch connected with the circuit breaker unit can effectively reduce the overall height of the switchgear at the feeder line side, and reserves the maintenance space at the upper side of the circuit breaker, thereby having the technical advantages of convenient maintenance, maintenance and the like; the bus side of the circuit breaker unit adopts a vertical incoming and outgoing line mode, the bus side isolating switch, the bus side isolating and grounding combination device and the first and second main bus units are connected in an integrated mode, the main bus units are integrally arranged in a 'product' shape, the number of the two-way/three-way/turning switching units of the transition unit in the prior art scheme is greatly reduced, the overall height of equipment can be effectively reduced, the overall transportation of the equipment is realized, and the installation and transportation cost is reduced.
Furthermore, the first switching unit integrates a grounding switch, so that the through-current and grounding functions can be realized on the bus at the same time, and the grounding switch on the feeder line side are independently arranged, so that the influence of abrasion foreign matters generated by the original switching-on and switching-off operation on the insulation reliability of the isolating switch is avoided; meanwhile, the grounding switch unit is installed at a low position, so that the installation, arrangement and inspection and maintenance are facilitated.
Furthermore, an overhaul space is reserved between the bus side and the feeder side on the upper portion of the circuit breaker unit, and the overhaul space is larger than the previous space, so that overhaul is facilitated.
Drawings
Fig. 1 is a schematic layout of a conventional ultra-high voltage gas insulated metal enclosed switchgear;
fig. 2 is a schematic diagram of the layout structure of an ultra-high voltage gas insulated metal-enclosed switchgear of the present invention;
fig. 3 is a schematic diagram of a feeder-side connection structure of an ultra-high voltage gas-insulated metal-enclosed switchgear of the present invention;
FIG. 4 is a schematic view of a connection structure of a bus-side disconnector and a first main bus;
fig. 5 is a schematic view of a connection structure between the bus-side isolation and grounding combination device and the second main bus.
The system comprises a fast grounding switch 1, a feeder isolator 2, a feeder side current transformer 3, a grounding switch 4, a first switching unit 5, a breaker unit 6, a bus side current transformer 7, a bus side isolator 8, a bus side isolation grounding combination device 9, a first main bus 10, a second main bus 11 and a second switching unit 12, wherein the feeder side current transformer, the bus side isolation grounding combination device and the bus side isolation grounding combination device are respectively connected with a feeder line isolator and a bus line isolator;
8-1 is a phase A of the bus side disconnecting switch, 8-2 is a phase B of the bus side disconnecting switch, and 8-3 is a phase C of the bus side disconnecting switch;
9-1 is a phase A of the bus side isolation grounding combination device, 9-2 is a phase B of the bus side isolation grounding combination device, 9-3 is a phase C of the bus side isolation grounding combination device, and 9-4 is a combination grounding device;
10-1 is a first main bus phase A, 10-2 is a first main bus phase B, and 10-3 is a first main bus phase C;
11-1 is a phase A of the second main bus, 11-2 is a phase B of the second main bus, and 11-3 is a phase C of the second main bus.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the following detailed description is made 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 invention, i.e., the described embodiments are only some, but not all embodiments of the invention.
The components described and illustrated in the drawings and embodiments of the invention may be arranged and designed in a wide variety of different configurations, and accordingly, the detailed description of the embodiments of the invention provided in the drawings that follow is not intended to limit the scope of the invention as claimed, but is merely representative of a selected embodiment of the invention. Based on the drawings and embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, element, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, element, method, article, or apparatus. Furthermore, the terms "horizontal" and "vertical" are based on the orientation and positional relationship of the devices or components shown in the drawings and are only used for better describing the present invention, but do not require that the devices, components or equipment shown must have this particular orientation, and therefore should not be construed as limiting the present invention.
The features and properties of the present invention will be further described in detail with reference to the following examples.
As shown in fig. 2 and fig. 3, the utility model discloses an arrangement structure of an ultrahigh voltage gas insulated metal enclosed switchgear, which mainly comprises a circuit breaker unit 6, wherein a bus side current transformer 7, a bus side isolating switch 8, a bus side isolating and grounding combination device 9 and a main bus unit are arranged at the bus side of the circuit breaker unit 6; a feeder side current transformer unit 3, a grounding switch 4, a feeder isolation switch 2, a fast grounding switch 1 and a first switching unit 5 are arranged on the feeder side of the breaker unit 6.
Generally, the bus-side disconnector 8 and the bus-side disconnector grounding combination 9 can be interchanged.
And the feeder side of the breaker unit 6 is a horizontal incoming and outgoing line and is connected with the feeder side current transformer 3 through a first switching unit 5. The feeder side current transformers 3 are vertically arranged, the upper ends of the feeder side current transformers 3 are directly connected with the feeder isolation switch 2, and the feeder isolation switch 2 is horizontally arranged.
The first switching unit 5 has the dual functions of meeting the requirement of a feeder side bus side outlet corner and integrating the grounding switch 4, can effectively reduce the overall height of a feeder side switch device, reserves an upper side overhaul space of a circuit breaker, and has the technical advantages of convenience in maintenance, overhaul and the like.
And the bus side of the circuit breaker unit 6 is provided with a vertical incoming and outgoing line which is directly connected with a bus side current transformer 7. The bus side isolating switch 8 and the bus side isolating and grounding combined device 9 are vertically arranged, the side ends are connected with the bus side current transformer 7 through the second switching unit 12, and the upper ends are directly connected with the three-phase main bus unit.
The main bus unit comprises a first main bus 10 and a second main bus 11 which are integrally arranged in a shape like a Chinese character pin and are highly integrated with the bus side isolating switch 8 and the bus side isolating and grounding combination device 9, so that the overall height of the equipment can be effectively reduced, the overall transportation of the equipment is realized, and the installation and transportation cost is reduced.
As shown in fig. 4, the static side of the phase 8-1 of the bus-side disconnecting switch a is inclined, the phase 8-1 of the bus-side disconnecting switch a is directly connected with the phase 10-1 of the first main bus, and the static side of the phase 8-3 of the bus-side disconnecting switch C is inclined and is directly connected with the phase 10-3 of the first main bus; the static side of the bus side isolating switch B phase 8-2 is straight and is directly connected with the first main bus B phase 10-2.
As shown in fig. 5, the static side of the phase a 9-1 of the bus side isolation and grounding combination device is inclined out and is directly connected with the phase a 11-1 of the second main bus; the static side of the C phase 9-3 of the bus side isolation grounding combination device is inclined out and is directly connected with the C phase 11-3 of the second main bus; and the static side of the B phase 9-2 of the bus side isolation grounding combination device is straight and is directly connected with the B phase 11-2 of the second main bus.
A service space can be reserved in the upper part of the circuit breaker unit 6 between the bus side and the feeder side.
The utility model discloses a super high pressure gas-insulated metal-enclosed switchgear arrangement structure, the whole transportation and the low level that can solve switchgear in the application in super high pressure field overhaul the maintenance problem, have that the integrated level is high, installation and cost of transportation are low, be convenient for technical advantage such as maintenance and repair.
The first main bus 10 and the second main bus 11 are arranged in a shape like a Chinese character 'pin' and are directly connected with the bus-side disconnecting switch 8. The use amount of the three-way shell, the turning shell and the basin in the arrangement of the main bus is effectively saved, the overall height of the equipment is effectively reduced, and the overall transportation is realized.
The circuit breaker feeder side adopts the horizontal mode of being qualified for the next round of competitions, sets up a right angle switching unit of taking earthing switch 4 between current transformer and circuit breaker, realizes conductor through-flow and feeder side grounding function simultaneously, is convenient for patrol and overhaul, enlarges the maintenance space between circuit breaker top feeder side and the generating line side simultaneously.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents of the embodiments of the invention may be made without departing from the spirit and scope of the invention, which should be construed as falling within the scope of the claims of the invention.
Claims (8)
1. An arrangement structure of an ultrahigh-voltage gas-insulated metal-enclosed switchgear is characterized by comprising a breaker unit (6), wherein a bus-side current transformer (7), a bus-side isolating switch (8), a bus-side isolating and grounding combination device (9) and a main bus unit are arranged on the bus side of the breaker unit (6);
a feeder side current transformer (3), a feeder isolating switch (2) and a first switching unit (5) are arranged on the feeder side of the breaker unit (6); the first switching unit (5) is horizontally connected to the feeder side of the circuit breaker unit (6), the upper end of the first switching unit (5) is connected with the feeder side current transformer (3), the feeder side current transformer (3) is vertically arranged, and the upper end of the feeder side current transformer (3) is connected with the feeder isolation switch (2);
the main bus unit comprises a first main bus (10) and a second main bus (11) which are respectively arranged in a delta shape, the static sides of a phase A (8-1) of the bus side disconnecting switch and a phase C (8-3) of the bus side disconnecting switch are inclined out, and the static side of a phase B (8-2) of the bus side disconnecting switch is straight out;
the static sides of the phase A (9-1) of the bus side isolation grounding combination device and the phase C (9-3) of the bus side isolation grounding combination device are inclined out; the static side of the B phase (9-2) of the bus side isolation grounding combination device is straight.
2. Ultra high voltage gas insulated metal enclosed switchgear arrangement according to claim 1, characterized in that the first switching unit (5) is integrated with an earthing switch (4).
3. An arrangement structure of an extra-high voltage gas insulated metal enclosed switchgear according to claim 1, characterized in that the bus side disconnector a phase (8-1) is connected with a first main bus a phase (10-1), and the bus side disconnector C phase (8-3) is connected with a first main bus C phase (10-3); the bus side isolating switch (8) B is directly connected with a first main bus B phase (10-2);
a phase A (9-1) of the bus side isolation and grounding combination device is connected with a phase A (11-1) of a second main bus, a phase C (9-3) of the bus side isolation and grounding combination device is connected with a phase C (11-3) of the second main bus, and a phase B (9-2) of the bus side isolation and grounding combination device is directly connected with a phase B (11-2) of the second main bus.
4. An ultra high voltage gas insulated metal enclosed switchgear arrangement according to claim 1, characterized in that a service space is reserved in the area between the bus side and the feeder side at the upper part of the circuit breaker unit (6).
5. An arrangement structure of an ultra high voltage gas insulated metal enclosed switchgear according to claim 1 characterized in that the feeder isolation switch (2) is arranged horizontally, and the outer end of the feeder isolation switch (2) is connected with a fast grounding switch (1).
6. Arrangement for an ultra high voltage gas insulated metal enclosed switchgear according to claim 1, characterized in that the breaker unit (6) bus side is a vertical access line, connected with a bus side current transformer (7).
7. The arrangement structure of the ultrahigh-voltage gas-insulated metal-enclosed switchgear according to claim 1, wherein the busbar-side disconnecting switch (8) and the busbar-side disconnecting and grounding combination device (9) are both vertically arranged, the side ends are connected with the busbar-side current transformer (7) through the second switching unit (12), and the upper ends are directly connected with the main busbar unit.
8. Arrangement in an ultra high voltage gas insulated metal enclosed switchgear according to claim 1 characterized in that the bus side current transformer (7) is arranged vertically, connected to the circuit breaker unit (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222240418.2U CN217984268U (en) | 2022-08-24 | 2022-08-24 | Arrangement structure of ultrahigh-voltage gas-insulated metal-enclosed switchgear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222240418.2U CN217984268U (en) | 2022-08-24 | 2022-08-24 | Arrangement structure of ultrahigh-voltage gas-insulated metal-enclosed switchgear |
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| CN217984268U true CN217984268U (en) | 2022-12-06 |
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| CN202222240418.2U Active CN217984268U (en) | 2022-08-24 | 2022-08-24 | Arrangement structure of ultrahigh-voltage gas-insulated metal-enclosed switchgear |
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| CN (1) | CN217984268U (en) |
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- 2022-08-24 CN CN202222240418.2U patent/CN217984268U/en active Active
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