CN214626360U - HGIS power distribution device and outlet structure thereof - Google Patents
HGIS power distribution device and outlet structure thereof Download PDFInfo
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- CN214626360U CN214626360U CN202120602667.4U CN202120602667U CN214626360U CN 214626360 U CN214626360 U CN 214626360U CN 202120602667 U CN202120602667 U CN 202120602667U CN 214626360 U CN214626360 U CN 214626360U
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Abstract
The utility model relates to an electrical engineering technical field discloses a HGIS power distribution unit and play line structure thereof, the structure of being qualified for next round of competitions includes one section generating line, the two-section generating line, first circuit breaker unit, second circuit breaker unit and third circuit breaker unit, first circuit breaker unit and two-section bus connection, third circuit breaker unit and one section generating line connection, be connected through first connecting conductor between first circuit breaker unit and the second circuit breaker unit, second circuit breaker unit and third circuit breaker unit pass through the second connecting conductor and are connected, first circuit breaker unit, third circuit breaker unit all intersects with second circuit breaker unit and arranges, one of first connecting conductor and second connecting conductor is connected with the low frame of side direction and is qualified for the next round of competitions, another is connected with the low frame of forward and is qualified for the next round of competitions. The first circuit breaker unit and the third circuit breaker unit are arranged in a crossed mode with the second circuit breaker unit, the first connecting conductor and the second connecting conductor can realize low-frame outgoing lines, a space with the height of 26m is reserved, and an arrangement space is provided for the outgoing lines of the parallel strings.
Description
Technical Field
The utility model relates to an electrical engineering technical field especially relates to a HGIS power distribution unit and outlet structure thereof.
Background
500kV HGIS (Hybrid Gas-Insulated Switchgear) is one of the currently widely used types of 500kV power distribution equipment. The 500kV power distribution device is generally wired by adopting an 3/2 circuit breaker, and the wiring diagrams shown in fig. 1 to fig. 3 correspondingly show a conventional wire outlet mode and a rebound wire outlet mode of the existing 500kV power distribution device.
Fig. 1 and 2 show a conventional line outgoing structure, wherein a line segment with an arrow indicates an outgoing line, and fig. 1 shows that two outgoing lines in a string are both outgoing lines in a direction perpendicular to a bus; FIG. 2 is another conventional line outgoing structure, in which one line outgoing is perpendicular to the direction of the bus and the other line outgoing is parallel to the direction of the bus, and the two lines do not cross each other on a plane projected to the ground; fig. 3 shows a bounce-back outgoing line structure, wherein line segments with arrows indicate outgoing lines, that is, one outgoing line in a string is reversely outgoing in a direction perpendicular to a bus, and the other outgoing line is outgoing in a direction parallel to the bus, and the two outgoing lines cross on a plane projected to the ground.
The existing 500KV power distribution device usually adopts three-row medium-sized arrangement of a suspended hard tube bus HGIS when outgoing lines are arranged, generally adopts two-layer arrangement of a bus and a cross line in a string (corresponding to the outgoing line mode of figure 1) or three-layer arrangement of a bus, a cross line in a string and a high-level cross line (corresponding to the outgoing line mode of figure 2), and an outgoing line framework, an intermediate framework and a bus framework are closely connected by adopting a combined framework, so that the arrangement mode is very compact. Fig. 4 is a cross-sectional view of a typical HGIS in a three-layer arrangement mode, the compact arrangement of the HGIS limits the arrangement flexibility to a certain extent, lateral low-frame outgoing lines and debounce outgoing lines are difficult to achieve, the limitation is formed on the matching series and arrangement, and meanwhile, the HGIS are arranged according to a conventional structure, two outgoing lines such as main transformer incoming lines and line outgoing lines in the same series cannot cross over, and debounce is difficult to achieve.
With the development of the gas insulated enclosed bus GIL technology, the characteristic that the GIL is flexibly arranged is utilized, the GIL is easier to be used as a bounce outgoing line than a bare conductor, but the GIL has more problems at present and high failure rate, the operation and maintenance risk and the investment are increased by adopting the GIL, and the arrangement of the GIL needs to enlarge the interval width and increase a group of sleeves, so that the longitudinal and transverse sizes are increased, and the occupied area is increased.
The HGIS is conventionally arranged in a three-layer type arrangement, and in order to realize low-frame outgoing lines, a layer of lead is required to be added on a bus according to a conventional outgoing line mode, so that a four-layer type arrangement is realized. However, the height of the uppermost framework in the three-layer arrangement reaches 33.5 meters, and if one layer is added, the height of the framework is further increased, so that the design difficulty of the framework is increased, and the operation and maintenance are not facilitated.
If the HGIS can realize two-loop low frame outgoing line, one-loop side outgoing line and the other-loop forward low frame outgoing line, a 26m layer (a second layer arranged in a three-layer manner) in the string can be vacated to provide a bounce outgoing line space for the inner side (the side close to the transformer) outgoing line coming from other series detours, so that the string configuration and the arrangement scheme can be more flexible and reasonable. Therefore, how to realize the serial low-rack outgoing line at the end of the HGIS power distribution device and the 'detour coming' anti-bounce outgoing line of other strings under the condition of not changing the height of the existing framework is the key point of optimizing the power distribution device.
As shown in fig. 5 to 7, fig. 5 and 6 are schematic diagrams of two conventional outlet methods of the HGIS in the prior art, fig. 5 corresponds to the outlet method of fig. 1, fig. 6 corresponds to the outlet method of fig. 2, wherein line segments with arrows represent outlet lines, overhead side outlet lines and conventional outlet lines, and double-headed arrows represent bus bar directions in the drawings. Fig. 7 is a structural diagram of a prior art HGIS debounce outlet, and a transition string is added to be dedicated to outlet, but this way of realizing debounce outlet by adding a framework will increase the floor space and the engineering investment.
The Chinese utility model patent with the publication number of CN202712694U discloses an HGIS power distribution device and a lateral outlet structure thereof, which comprises an I section bus, an II section bus, a lateral outlet, a first circuit breaker unit, a second circuit breaker unit and a third circuit breaker unit which are connected in series sequentially through connecting conductors; the first breaker unit and the second breaker unit are connected through a first connecting conductor; the first breaker unit is also connected with a section II bus; the breaker unit III is connected with the I section bus; the connecting conductor is isolated from the section II bus; the lateral outgoing line is connected with the first connecting conductor; the first breaker unit is arranged to intersect the direction in which the second breaker unit and the third breaker unit are located.
According to the HGIS power distribution device and the lateral outlet structure thereof, the first breaker unit and the second breaker unit are arranged in an intersecting manner, and the second breaker unit are arranged in parallel, so that one-loop lateral low-frame outlet wire and the other-loop reverse-jump outlet wire are realized, but only one-loop low-frame outlet wire can be realized in the manner, the other-loop reverse-jump outlet wire still occupies a space of 26m layers, and an available outlet channel is still lacked when the outlet wires are required in other strings.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the wire outlet structure for the HGIS power distribution device is provided, so that the problem that the HGIS power distribution device in the prior art is short of available wire outlet channels when wires need to be outlet in other strings is solved; the utility model also provides an HGIS distribution device who uses this outlet structure.
In order to realize the above object, the utility model provides an outlet structure for HGIS power distribution unit, including one section generating line and the two-section generating line of mutual parallel arrangement, still arranged first circuit breaker unit, second circuit breaker unit and third circuit breaker unit between one section generating line and the two-section generating line, first circuit breaker unit with the two-section generating line is connected, the third circuit breaker unit with one section generating line is connected, first circuit breaker unit with connect through first connecting conductor between the second circuit breaker unit, the second circuit breaker unit with the third circuit breaker unit passes through second connecting conductor and connects, first circuit breaker unit with second circuit breaker unit crossing arrangement, the third circuit breaker unit with second circuit breaker unit crossing arrangement, first connecting conductor with one of them of second connecting conductor is connected with the low frame outlet wire of side direction perpendicular to generating line direction, The other is connected with a positive low frame outgoing line parallel to the bus direction.
Preferably, the first circuit breaker unit and the third circuit breaker unit are perpendicular to the second circuit breaker unit.
Preferably, the first connecting conductor and the second connecting conductor are suspended tubular busbars.
Preferably, the first and second connecting conductors are wires.
The utility model also provides a HGIS power distribution unit, including the end cluster and with the parallel cluster of end cluster parallel arrangement, the outlet structure has been arranged in the end cluster, the outlet structure includes one section generating line and two-stage bus that mutual parallel arrangement, still arrange first circuit breaker unit, second circuit breaker unit and third circuit breaker unit between one section generating line and the two-stage bus, first circuit breaker unit with the two-stage bus is connected, third circuit breaker unit with the one-stage bus is connected, first circuit breaker unit with connect through the first connecting conductor between the second circuit breaker unit, the second circuit breaker unit with the third circuit breaker unit passes through the second connecting conductor and connects, first circuit breaker unit with the second circuit breaker unit crossing arrangement, third circuit breaker unit with the second circuit breaker unit crossing arrangement, one of the first connecting conductor and the second connecting conductor is connected with a lateral low frame outgoing line which is vertical to the bus direction, and the other one is connected with a forward low frame outgoing line which is parallel to the bus direction.
Preferably, the first circuit breaker unit and the third circuit breaker unit are perpendicular to the second circuit breaker unit.
Preferably, the first circuit breaker unit and the third circuit breaker unit are perpendicular to the second circuit breaker unit.
Preferably, the first and second connecting conductors are wires.
Preferably, a debounce outgoing line led out from the parallel strings is further arranged in the end string, and the debounce outgoing line is perpendicular to the bus direction.
Preferably, a lateral outgoing line perpendicular to the bus direction is arranged in the parallel string.
The utility model discloses a HGIS distribution device and outlet structure thereof compares with prior art, and its beneficial effect lies in: by utilizing the characteristic that the HGIS is connected with external circuits such as a bus and the like through a high-voltage bushing, a first breaker unit and a third breaker unit in the outlet structure of the end string are arranged in a crossed manner with a second breaker unit, and lateral low-frame outlet and forward low-frame outlet can be realized through a first connecting conductor and a second connecting conductor, namely, a space with the height of 26m is reserved in the end string, so that an arrangement space is provided for the outlet wires led out in the parallel strings; the arrangement mode is rich in HGIS arrangement, so that the HGIS has low-frame outgoing lines and bounce-back outgoing lines like an open-type power distribution device, a new means is provided for optimizing plane arrangement, enriching a distribution string scheme and facilitating operation and maintenance, the method has the advantages of simple scheme, low height of overline, convenience in operation and maintenance and investment saving, meanwhile, the problem of increasing occupied space or complicated high-rise overline outgoing lines is avoided, the design of the power distribution device is simplified, the method can be conveniently applied to super-scale extension of a transformer substation, the change of the original power distribution device is less, and the extension is convenient.
Drawings
FIG. 1 is a schematic structural diagram of a conventional outlet I;
FIG. 2 is a schematic structural diagram of a conventional second outgoing line;
FIG. 3 is a schematic diagram of a conventional debounce line outlet method;
FIG. 4 is a sectional view of a three-layer layout of a conventional HGIS;
FIG. 5 is a schematic diagram of a first conventional outlet manner of the HGIS;
FIG. 6 is a schematic diagram of a second conventional outlet manner of the HGIS;
FIG. 7 is a schematic diagram of a prior art HGIS debounce line;
FIG. 8 is a schematic diagram of the reverse bounce outlet and lateral low shelf outlet, forward low shelf outlet of the HGIS power distribution unit of the present invention;
FIG. 9 is a layout diagram of a HGIS employing a GIL gas insulated bus bounce-off line mode;
fig. 10 is a floor plan of the HGIS power distribution unit of the present invention;
fig. 11 is a plan view of the HGIS switchgear of the present invention with bus bar connections;
fig. 12 is a plan layout outlet connection diagram of the HGIS power distribution apparatus of the present invention;
FIG. 13 is a cross-sectional view of a parallel string of the HGIS power distribution unit of the present invention, except for the end strings;
fig. 14 is a cross-sectional view of an end string of the HGIS power distribution unit of the present invention;
FIG. 15 is a view from the A-A direction of FIG. 14;
fig. 16 is a view from B-B of fig. 14.
In the figure, 1, a line is laterally led out; 2. a section of bus; 3. two sections of buses are arranged; 4. a bus direction; 5. a rebound outlet; 6. laterally and low-frame outgoing lines; 7. a first connection conductor; 8. a frame; 9. a first circuit breaker unit; 10. a second circuit breaker unit; 11. a third circuit breaker unit; 12. a second connecting conductor; 13. and (5) forward low frame outgoing.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model discloses a preferred embodiment of HGIS distribution device, as shown in fig. 8 to 16, including the end cluster with the parallel cluster of end cluster parallel arrangement, the end cluster is arranged at HGIS distribution device's most marginal position, parallel cluster arrange at the rear side of end cluster and parallel to each other with the direction of arranging of end cluster, in the picture (r) node corresponds (r)) node (r)) nodes) 1 (r)) node (r)) node (r) (r.
The first string in the figure is the head string and the other strings are parallel strings. An outlet structure is arranged in the end string and comprises a section of bus 2 and a section of bus 3 which are arranged in parallel, and a first circuit breaker unit 9, a third circuit breaker unit 10 and a third circuit breaker unit 11 which are connected with each other are further arranged between the section of bus 2 and the section of bus 3. In the drawing, 1MA, 1MB, 1MC, 2MA, 2MB, and 2MC denote 500kV buses, the first-stage bus 2 and the second-stage bus 3 penetrate all the intervals, the first breaker unit 9 is connected to the second-stage bus 3, and the third breaker unit 11 is connected to the first-stage bus 2.
The first circuit breaker unit 9 is connected with the third circuit breaker unit 10 through a first connecting conductor 7, the third circuit breaker unit 10 is connected with the third circuit breaker unit 11 through a second connecting conductor 12, the first connecting conductor 7 is isolated from the second section of bus 3, and the second connecting conductor 12 is isolated from the first section of bus 2. In this embodiment, the first connecting conductor 7 and the second connecting conductor 12 are both suspension type tubular busbars, and the suspension type tubular busbars have the advantages of good anti-seismic performance, busbar sag, windage yaw and small tension on the framework 8. In other embodiments, the first connecting conductor 7 and the second connecting conductor 12 may be wires, which have low investment cost.
The first breaker unit 9 is arranged across the third breaker unit 10, and the third breaker unit 11 is arranged across the third breaker unit 10. In this embodiment, the first and third breaker units 9, 11 are perpendicular to the third breaker unit 10, and the first and third breaker units 9, 11 are parallel to the bus direction 44, which has the effect of having a more compact and reasonable structural space. After the first and third breaker units 9, 11 are perpendicular to the third breaker unit 10, the space parallel to the bus bar direction 44 is emptied, providing a low overhead outlet space.
The second connecting conductor 12 is connected with a lateral low frame outgoing line 6, the lateral low frame outgoing line 6 is perpendicular to the bus direction 44, and the bus direction 44 is the extending direction of the first-section bus 2 and the second-section bus 3. A forward low frame outgoing line 13 is connected to the first connecting conductor 7, and the forward low frame outgoing line 13 is parallel to the bus bar direction 44. Thereby, both the first connection conductor 7 and the second connection conductor 12 become connection points in the string, i.e. connection points of the electrical node (c), the electrical node (c) in fig. 1 to 3.
One bushing of the first breaker unit 9 is directly connected to the two-segment bus bar 3, and the outgoing line connected to the first breaker unit 9 is directed to the lower rack outgoing line 13 by the first connecting conductor 7 of this interval. One bushing of the third breaker unit 11 is directly connected to one section of the bus bar 2, and the outgoing line connected to the third breaker unit 11 is forward directed to the lower rack outgoing line 13 by the second connecting conductor 12 of this interval. Because the two outgoing lines of the interval are both low-frame outgoing lines, the vacated 26m layers of space provide a bounce-off outgoing line 5 channel for outgoing lines led out by other strings.
The first circuit breaker unit 9, the third circuit breaker unit 10 and the third circuit breaker unit 11 adopt a 1+1+1 arrangement mode, and the first circuit breaker unit 9, the third circuit breaker unit 10 and the third circuit breaker unit 11 are 1' modules in the arrangement mode. The first circuit breaker unit 9, the third circuit breaker unit 10 and the third circuit breaker unit 11 are mutually independent and connected through a conductor to form a complete string. The advantage of adopting "1 +1+ 1" arrangement mode is that arrange more nimble, is suitable for the first stage circuit breaker cluster to be the construction of incomplete cluster, is plug-in type during enlargement and the change equipment, and is very convenient.
And a bounce outgoing line 5 led out from the parallel strings is also arranged in the end string, the bounce outgoing line 5 is arranged in a direction perpendicular to the bus direction 44, the bounce outgoing line 5 is led out from the inner sides of other strings, turns to the end string after passing through a high-level lateral stringing, and is reversely led out in a mode perpendicular to the bus direction 44, and the bounce outgoing line 5 and the lateral low stringing outgoing line 6 cross and cross on a plane projected by the bottom surface. The reverse-jump outgoing line 5 realizes low-frame outgoing line, and plane arrangement can be further optimized, so that a string matching scheme is enriched.
Except the end string, the other parallel strings adopt the conventional lateral outgoing line 1, three circuit breaker units in the parallel strings are connected into a complete string, and a first conventional outgoing line mode is adopted, namely two outgoing lines in the parallel strings are all outgoing lines perpendicular to the bus direction 44 and do not cross each other on a plane projected to the ground, so that the scheme can be conveniently applied to the super-scale extension of a transformer substation, the change of an original power distribution device is less, the extension is convenient, and the line-crossing scheme is simple and reliable, and the operation and the maintenance are convenient.
The utility model also provides a be qualified for next round of competitions structure for HGIS power distribution unit, its arrangement mode with the HGIS power distribution unit's of any above-mentioned embodiment is the same, does not do repeated the statement here.
To sum up, the embodiment of the utility model provides a HGIS power distribution unit and outlet structure thereof, it utilizes HGIS to pass through the characteristics of external circuit connection such as high-voltage bushing and generating line, and first circuit breaker unit, third circuit breaker unit all intersect the arrangement with second circuit breaker unit in the outlet structure of end cluster, can realize through first connecting conductor and second connecting conductor that side direction low frame is qualified for the next round of competitions and the line is qualified for the next round of competitions to the next round of competitions with forward low frame, have vacated the space of 26m height in the end cluster promptly, have provided the arrangement space for the interior outlet wire of drawing forth of parallel cluster; the arrangement mode is rich in HGIS arrangement, so that the HGIS has low-frame outgoing lines and bounce-back outgoing lines like an open-type power distribution device, a new means is provided for optimizing plane arrangement, enriching a distribution string scheme and facilitating operation and maintenance, the method has the advantages of simple scheme, low height of overline, convenience in operation and maintenance and investment saving, meanwhile, the problem of increasing occupied space or complicated high-rise overline outgoing lines is avoided, the design of the power distribution device is simplified, the method can be conveniently applied to super-scale extension of a transformer substation, the change of the original power distribution device is less, and the extension is convenient.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a HGIS power distribution unit's outlet structure, its characterized in that, including one section generating line and two-section generating line of mutual parallel arrangement, still arranged first circuit breaker unit, second circuit breaker unit and third circuit breaker unit between one section generating line and the two-section generating line, first circuit breaker unit with two-section generating line is connected, third circuit breaker unit with one section generating line is connected, first circuit breaker unit with connect through first connecting conductor between the second circuit breaker unit, second circuit breaker unit with third circuit breaker unit passes through the second connecting conductor and connects, first circuit breaker unit with the crossing arrangement of second circuit breaker unit, third circuit breaker unit with the crossing arrangement of second circuit breaker unit, first connecting conductor with one of them of second connecting conductor is connected with the side direction of perpendicular to generating line and hangs down a line, The other is connected with a positive low frame outgoing line parallel to the bus direction.
2. The outlet structure of an HGIS power distribution apparatus of claim 1, wherein the first circuit breaker unit, the third circuit breaker unit are perpendicular to the second circuit breaker unit.
3. The outlet structure of an HGIS power distribution device of claim 1 or 2, wherein the first and second connection conductors are suspended tubular busbars.
4. An outlet structure of an HGIS power distribution apparatus according to claim 1 or 2, wherein the first and second connection conductors are wires.
5. An HGIS power distribution device is characterized by comprising an end string and a parallel string arranged in parallel with the end string, wherein a wire outlet structure is arranged in the end string, the wire outlet structure comprises a section of bus and a section of bus which are arranged in parallel, a first circuit breaker unit, a second circuit breaker unit and a third circuit breaker unit are further arranged between the section of bus and the section of bus, the first circuit breaker unit is connected with the section of bus, the third circuit breaker unit is connected with the section of bus, the first circuit breaker unit is connected with the second circuit breaker unit through a first connecting conductor, the second circuit breaker unit is connected with the third circuit breaker unit through a second connecting conductor, the first circuit breaker unit is arranged in an intersecting manner with the second circuit breaker unit, and the third circuit breaker unit is arranged in an intersecting manner with the second circuit breaker unit, one of the first connecting conductor and the second connecting conductor is connected with a lateral low frame outgoing line which is vertical to the bus direction, and the other one is connected with a forward low frame outgoing line which is parallel to the bus direction.
6. An HGIS power distribution apparatus according to claim 5, wherein the first circuit breaker unit, the third circuit breaker unit are both perpendicular to the second circuit breaker unit.
7. An HGIS power distribution apparatus according to claim 5 or 6, wherein the first circuit breaker unit, the third circuit breaker unit are both perpendicular to the second circuit breaker unit.
8. An HGIS power distribution apparatus according to claim 5 or claim 6, wherein the first and second connection conductors are wires.
9. An HGIS power distribution device according to claim 5 or claim 6, wherein a bounce-back outlet line led out from the parallel strings is further arranged in the end string, and the bounce-back outlet line is perpendicular to the direction of the bus.
10. An HGIS power distribution device according to claim 5 or claim 6, wherein a lateral outlet line is arranged within the parallel string perpendicular to the direction of the bus bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120602667.4U CN214626360U (en) | 2021-03-24 | 2021-03-24 | HGIS power distribution device and outlet structure thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120602667.4U CN214626360U (en) | 2021-03-24 | 2021-03-24 | HGIS power distribution device and outlet structure thereof |
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| CN214626360U true CN214626360U (en) | 2021-11-05 |
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| CN202120602667.4U Active CN214626360U (en) | 2021-03-24 | 2021-03-24 | HGIS power distribution device and outlet structure thereof |
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- 2021-03-24 CN CN202120602667.4U patent/CN214626360U/en active Active
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