CN210224772U - GIS wiring and layout structure - Google Patents
GIS wiring and layout structure Download PDFInfo
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- CN210224772U CN210224772U CN201921388659.3U CN201921388659U CN210224772U CN 210224772 U CN210224772 U CN 210224772U CN 201921388659 U CN201921388659 U CN 201921388659U CN 210224772 U CN210224772 U CN 210224772U
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- 239000002184 metal Substances 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
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Abstract
本实用新型提供一种能快速切换的GIS接线及布置结构，包括主回路、备用相和母线侧元件；主回路与母线侧元件相连通；母线侧元件中设置有断路器；主回路上安装有主回路隔离开关，备用相上安装有备用相隔离开关；主回路隔离开关与备用相隔离开关逻辑互锁；备用相设置在主回路隔离开关与母线侧元件之间；主回路包括A相、B相和C相，备用相包括A’相、B’相和C’相；A相与A’相相连通，B相与B’相相连通，C相与C’相相连通。实现主变备用相的快速切换，结构简单、利于实施、安全高效，不需移动备用相，从而解决了搬运故障相和备用相需要时间过长的技术问题。同时，由于不需设置横向搬运轨道，节约主变场地占用面积，缩短切换时间，节约相应轨道建设投资。
The utility model provides a fast switching GIS wiring and arrangement structure, which comprises a main circuit, a standby phase and a bus-side element; the main circuit is communicated with the bus-side element; a circuit breaker is arranged in the bus-side element; The main circuit isolating switch, the standby phase isolating switch is installed on the standby phase; the main circuit isolating switch and the standby phase isolating switch are logically interlocked; the standby phase is set between the main circuit isolating switch and the bus side components; the main circuit includes A phase, B phase Phase and C phase, the standby phase includes A' phase, B' phase and C'phase; A phase is connected with A' phase, B phase is connected with B' phase, C phase is connected with C' phase. It realizes the rapid switching of the main transformer and the standby phase, has a simple structure, is convenient for implementation, safe and efficient, and does not need to move the standby phase, thereby solving the technical problem that it takes too long to transport the faulty phase and the standby phase. At the same time, since there is no need to set up a horizontal transport track, the area occupied by the main transformer site is saved, the switching time is shortened, and the investment in the corresponding track construction is saved.
Description
Technical Field
The utility model relates to a GIS arranges the field, concretely relates to GIS wiring and arrangement structure.
Background
With the continuous improvement of the voltage grade of a power grid in China, 800/1000kV ultrahigh voltage alternating current transmission networks are built gradually, 800/1000kV ultrahigh voltage alternating current transformer substations are enriched gradually, and higher requirements are provided for whether the transformer substation arrangement can save land or not.
At the initial stage of operation of the extra-high voltage transformer substation, all main transformers are not arranged, and a structure of partial main transformers and main transformer standby phases is installed in the substation. If a main transformer has a single-phase fault, the time for switching the standby phase is long, and the long-time load-limited operation of the transformer substation is caused, so that the outgoing power is greatly reduced, and the stable operation of a power grid is seriously influenced. At present, a traditional standby phase switching mode is that a transverse transportation track is arranged on the side of a main transformer transportation road, a longitudinal transportation track is arranged between the main transformer transportation road and a main transformer oil pit, when a certain phase of an installed main transformer fails, a fault phase is firstly shifted out, then the standby phase installed at a reserved position is pushed out along the track, and the standby phase is transported to a corresponding fault main transformer for installation.
The GIS equipment refers to gas insulated metal enclosed switchgear, and generally comprises a partition, a bus and the like; GIL refers to a gas insulated metal closed transmission line; the two are used in combination. GIS equipment can reduce the area of transformer substation to reduce the equipment maintenance. Taking the scales of 2 main transformers in the current period and 4 main transformers of 1000kV in the final period as an example, the traditional standby phase switching mode has the following problems:
1. need set up heavy track for transportation in the main transformer place, because need consider main transformer reserve phase or the clear apart from problem of air of the electrified equipment of relative main transformer both sides during fault transportation, main transformer place longitudinal dimension increases 10m than conventional arrangement scheme (not for the equipment phase), increases area about 3500m2。
2. Even if rail transportation is adopted, due to the fact that the main transformer adopts an integral carrying mode, experiments need to be conducted again after the main transformer is in place, and the like, the main transformer standby phase switching needs about 16 days, and the time is long.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a GIS wiring and arrangement structure that can fast switch over is provided.
The utility model provides a technical scheme that its technical problem adopted is: the GIS wiring and arranging structure comprises a main loop, a standby phase and a bus side element; the main loop is communicated with a bus-side element; a circuit breaker is arranged in the bus side element; the main loop is provided with a main loop isolating switch, and the standby phase is provided with a standby isolating switch; the main loop isolating switch and the standby isolating switch are logically interlocked;
the standby phase is arranged between the main circuit isolating switch and the bus side element;
the main loop comprises an A phase, a B phase and a C phase, and the standby phase comprises an A ' phase, a B ' phase and a C ' phase;
the phase A is communicated with the phase A ', the phase B is communicated with the phase B ', and the phase C is communicated with the phase C '.
Furthermore, the main circuit isolating switch comprises an A-phase switch, a B-phase switch and a C-phase switch;
the A-phase switch is installed on the A-phase, the B-phase switch is installed on the B-phase, and the C-phase switch is installed on the C-phase;
the standby phase isolating switch comprises an A ' phase switch, a B ' phase switch and a C ' phase switch;
the A 'phase switch is installed on the A' phase, the B 'phase switch is installed on the B' phase, and the C 'phase switch is installed on the C' phase.
Furthermore, the system also comprises a bus side isolating switch; the bus-side disconnector is mounted in a bus-side element, which bus-side disconnector is connected in series with a circuit breaker.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a GIS wiring and arrangement structure that can fast switch over utilizes the shutting relation, realizes the fast switch over of main reserve phase that becomes, its simple structure, do benefit to implementation, safe high efficiency, need not remove reserve phase to the technical problem of transport trouble looks and reserve looks required time overlength has been solved. Meanwhile, as the transverse carrying track is not required to be arranged, the occupied area of a main transformer site is saved, the switching time is shortened, and the construction investment of the corresponding track is saved.
Drawings
Fig. 1 is a schematic diagram of the wiring structure of the present invention;
reference numerals: phase 1-A; 2-B phase; 3-C phase; 4-A' phase; a 5-B' phase; 6-C' phase; 7-main circuit isolating switch; 701-A phase switch; a 702-B phase switch; 703-C phase switch; 8-spare phase isolating switch; 801-A' phase switch; an 802-B' phase switch; a 803-C' phase switch; 9-bus bar side element; 901-a current transformer; 902-a circuit breaker; 903-bus side disconnecting switch; 10-main loop bushing; 11-a standby phase bushing; 12-GIS bus.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in the figures, the GIS wiring and layout structure comprises a main circuit, a standby phase and a busbar side element 9; the main circuit communicates with the bus-side element 9; a circuit breaker 902 is provided in the bus bar-side element 9; a main loop isolating switch 7 is installed on the main loop, and a standby isolating switch 8 is installed on the standby phase; the main loop isolating switch 7 and the standby isolating switch 8 are logically interlocked; the standby phase is arranged between the main circuit disconnector 7 and the busbar-side element 9; the main loop comprises an A phase 1, a B phase 2 and a C phase 3, and the standby phase comprises an A ' phase 4, a B ' phase 5 and a C ' phase 6; the phase A1 is communicated with the phase A ' 4, the phase B2 is communicated with the phase B ' 5, and the phase C3 is communicated with the phase C ' 6.
The main loop is communicated with an overhead line through a main loop sleeve 10; the standby phase is communicated with the overhead line through a standby phase bushing 11. The main circuit breaker 7 is installed on the main circuit, and the position where the backup phase is connected to the main circuit is located between the bus bar side member 9 and the main circuit breaker 7. The phase A1 is communicated with the phase A ' 4, the phase B2 is communicated with the phase B ' 5, and the phase C3 is communicated with the phase C ' 6. The bus bar side member 9 includes a current transformer 901, a breaker 902, and the like for connecting the main circuit and the GIS bus bar 12. The circuit breaker 902 has an arc extinguishing function, and can be operated with load to break a line. The logic interlocking of the main circuit isolating switch 7 and the standby isolating switch 8 means that the corresponding phases of the main circuit isolating switch 7 and the standby isolating switch 8 cannot be simultaneously connected, one of the phases is connected, and the other phase is disconnected. When the main loop normally works, the three phases controlled by the main loop isolating switch 7 are all connected, and the three phases controlled by the standby isolating switch 8 are all disconnected. When the main circuit has a fault, the main circuit disconnecting switch 7 and the circuit breaker 902 are opened, so that the main circuit is disconnected from the GIS bus 12. And then the standby phase isolating switch 8 is closed, the breaker 902 is closed, the GIS bus 12 is communicated, and the standby phase is put into use to become a new main phase.
The main loop isolating switch 7 can integrally control the on-off of the main loop, and the standby isolating switch 8 can integrally control the on-off of the standby phase. When a certain phase in a main loop has a fault, the technical problem that only the fault phase cannot be switched exists. In order to solve the above technical problem, it is preferable that the main circuit isolation switch 7 includes an a-phase switch 701, a B-phase switch 702, and a C-phase switch 703; the A-phase switch 701 is installed on an A-phase 1, the B-phase switch 702 is installed on a B-phase 2, and the C-phase switch 703 is installed on a C-phase 3; the standby phase isolating switch 8 comprises an A ' phase switch 801, a B ' phase switch 802 and a C ' phase switch 803; the a 'phase switch 801 is installed on the a' phase 4, the B 'phase switch 802 is installed on the B' phase 5, and the C 'phase switch 803 is installed on the C' phase 6. The a-phase switch 701, the B-phase switch 702 and the C-phase switch 703 respectively control the on and off of the a-phase 1, the B-phase 2 and the C-phase 3, that is: the main loop isolating switch 7 can be controlled in a split phase mode. The a 'phase switch 801, the B' phase switch 802 and the C 'phase switch 803 respectively control the on and off of the a' phase 4, the B 'phase 5 and the C' phase 6, namely: the standby phase isolating switch 8 can be controlled in a split-phase mode. The two work independently without affecting each other. When only one fault phase in the main loop needs to be switched, the A ' phase switch 801, the B ' phase switch 802 and the C ' phase switch 803 are interlocked pairwise respectively, so that only one phase standby phase can be accessed at the same time, and the inter-phase short circuit is prevented. For example: when only the a phase 1 fails and both the B phase 2 and the C phase 3 are normal, the circuit breaker 902 opens, the a phase switch 701 is opened, the a 'phase switch 801 is closed, and the a' phase 4 of the standby phase is accessed. And the B phase 2 and the C phase 3 in the main loop are continuously used. Thus, when a phase in the main loop fails, only the failed phase needs to be switched, and the entire main loop does not need to be switched off. When the whole main loop has multi-phase faults and needs to be integrally switched, the A ' phase switch 801, the B ' phase switch 802 and the C ' phase switch 803 do not need to be interlocked in pairs. After the breaker 902 is disconnected, the a-phase switch 701, the B-phase switch 702 and the C-phase switch 703 are all disconnected, the a ' -phase switch 801, the B ' -phase switch 802 and the C ' -phase switch 803 are all closed, the whole standby phase is connected, and then the switching of the whole fault main loop is realized. At this point, the interlocking relationship between the phases of the standby phase isolating switch 8 is no longer required, but the corresponding standby phase three-phase conductors all need to be complete.
Since the separation point of the circuit breaker 902 is not easily observed at the outside, if the circuit breaker 902 is not completely opened, danger is easily generated, and in order to solve the above technical problems, it is preferable to further include a bus-side disconnecting switch 903; the bus-side disconnector 903 is installed in the bus-side element 9, and the bus-side disconnector 903 is connected in series with the circuit breaker 902. The bus-side disconnector 903 has a clearly visible disconnection point, and disconnection of the bus-side disconnector 903 can further ensure disconnection of the circuit and safety.
The utility model discloses an above do the embodiment of the utility model can be seen from the implementation, the utility model provides a GIS wiring and arrangement structure that can fast switch over utilizes the shutting relation, realizes the fast switch over of main reserve phase that becomes, its simple structure, do benefit to implementation, safe high-efficient, do not need to remove reserve phase to the technical problem who carries trouble looks and reserve phase required time overlength has been solved. Meanwhile, as the transverse carrying track is not required to be arranged, the occupied area of a main transformer site is saved, the switching time is shortened, and the construction investment of the corresponding track is saved.
Claims (3)
- GIS wiring and arrangement structure, comprising a main circuit, a standby phase and a busbar side element (9); the main circuit is communicated with a bus-side element (9); a circuit breaker (902) is arranged in the bus-side element (9); the method is characterized in that: a main loop isolating switch (7) is installed on the main loop, and a standby isolating switch (8) is installed on the standby phase; the main loop isolating switch (7) is logically interlocked with the standby isolating switch (8);the standby phase is arranged between the main circuit isolating switch (7) and the bus-side element (9);the main loop comprises an A phase (1), a B phase (2) and a C phase (3), and the standby phase comprises an A ' phase (4), a B ' phase (5) and a C ' phase (6);the phase A (1) is communicated with the phase A ' (4), the phase B (2) is communicated with the phase B ' (5), and the phase C (3) is communicated with the phase C ' (6).
- 2. The GIS wiring and arrangement of claim 1, wherein: the main loop isolating switch (7) comprises an A-phase switch (701), a B-phase switch (702) and a C-phase switch (703);the A-phase switch (701) is installed on the A-phase (1), the B-phase switch (702) is installed on the B-phase (2), and the C-phase switch (703) is installed on the C-phase (3);the standby phase isolating switch (8) comprises an A ' phase switch (801), a B ' phase switch (802) and a C ' phase switch (803);the A 'phase switch (801) is installed on an A' phase (4), the B 'phase switch (802) is installed on a B' phase (5), and the C 'phase switch (803) is installed on a C' phase (6).
- 3. The GIS wiring and arrangement according to claim 1 or 2, wherein: the system also comprises a bus side isolating switch (903); the bus-side disconnector (903) is mounted in a bus-side element (9), the bus-side disconnector (903) being connected in series with the circuit breaker (902).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921388659.3U CN210224772U (en) | 2019-08-23 | 2019-08-23 | GIS wiring and layout structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921388659.3U CN210224772U (en) | 2019-08-23 | 2019-08-23 | GIS wiring and layout structure |
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| Publication Number | Publication Date |
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| CN210224772U true CN210224772U (en) | 2020-03-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114915006A (en) * | 2021-02-09 | 2022-08-16 | 南京南瑞继保电气有限公司 | Automatic switching loop for standby phase of transformer substation |
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2019
- 2019-08-23 CN CN201921388659.3U patent/CN210224772U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114915006A (en) * | 2021-02-09 | 2022-08-16 | 南京南瑞继保电气有限公司 | Automatic switching loop for standby phase of transformer substation |
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