CN219287022U

CN219287022U - HGIS equipment and transformer substation

Info

Publication number: CN219287022U
Application number: CN202223412283.XU
Authority: CN
Inventors: 马靖; 关欣豪; 卢鹏; 刘旭; 赵楠; 王亚奇; 孙元元; 王磊; 常克歌; 苏其莉; 张建周; 张超; 刘诗佳; 王玉梅; 刘天慈; 贠军辉; 丁雯静
Original assignee: Henan Pinggao Electric Co Ltd
Current assignee: Henan Pinggao Electric Co Ltd
Priority date: 2022-12-17
Filing date: 2022-12-17
Publication date: 2023-06-30
Anticipated expiration: 2032-12-17

Abstract

The utility model belongs to the field of gas insulated switches, and particularly relates to HGIS equipment and a transformer substation. HGIS equipment is including being circuit breaker, current transformer, the isolator that the straight line was arranged, all is provided with the insulating basin between circuit breaker and the current transformer and between current transformer and the isolator, and circuit breaker, current transformer, isolator all form independent cavity from this. The circuit breaker and the current transformer and the isolating switch are separated by the insulating basin to use the independent chambers, so that the modularization and standardization of each part can be conveniently realized, and each part unit is further miniaturized, thereby being applicable to manufacturing, transportation, field installation and overhaul; the linear arrangement structure is simple in overall structure, reduces the occupied area of equipment, and reduces the overall construction difficulty and engineering cost.

Description

HGIS equipment and transformer substation

Technical Field

The utility model relates to HGIS equipment and a transformer substation using the same, belonging to the field of gas-insulated switches.

Background

With the continuous expansion of the power grid scale, the voltage level is also continuously improved, and particularly, the demand of a 750kV transformer substation is greatly increased. While there are three main types of outdoor power distribution equipment in common: the gas-insulated metal-enclosed switchgear (Gas Insulated Switchgear, GIS), HGIS (Hybrid Gas Insulated Switchgear) and air-insulated switchgear (Air Insulated Switchgear, AIS), wherein the GIS has the characteristics of small occupied area, high operation reliability, strong pollution resistance and shock resistance, and the like, but has higher manufacturing cost, is difficult to repair in a short time after a fault and is difficult to expand; AIS is less than GIS investment, but the area is very large and the charged part is exposed more, has limited the application in the place where the area is narrow and the environmental condition is bad, and is unfavorable for the safe and stable operation of the electric network system; HGIS has higher technical and economic indexes, has the same reliability and maintenance simplicity of GIS in terms of service performance, and is increasingly favored.

Most of conventional HGIS equipment of a 750kV transformer substation adopts an angular arrangement scheme, and then is switched through a bus, and a high-level arrangement mode is generally adopted, so that the arrangement mode cannot avoid the horizontal arrangement of an insulating basin, and the risk of discharging the insulating basin exists, so that the overall reliability of the equipment is low; bus switching is needed, so that engineering cost is greatly increased. In another horizontal arrangement form of the angle type isolating switch, although the horizontal arrangement of the insulating basin can be avoided, the bus is also required to be switched, and the circuit breaker and other equipment are not on the same horizontal line, so that the engineering quantity is large, and the cost is high.

The Chinese patent utility model with the authority notice number of CN201038646Y and the authority notice day of 2008, 3 and 19 discloses a compound gas-insulated switchgear, which comprises a power wiring system consisting of at least one structural unit, wherein the unit comprises a horizontally arranged breaker and isolating switches which are respectively arranged at two sides of the breaker and are electrically connected with the breaker, the isolating switches are arranged in isolating switch shells, the isolating switch shells, a support tube and an outgoing line sleeve form an independent closed air chamber, and the breaker and a current transformer form an independent air chamber together. Although the scheme provides the compound gas-insulated switchgear with the in-line arrangement, due to the structural arrangement of the shell, for example, when a current transformer is required to be independently overhauled, SF of the shared air chamber is required to be integrally released during overhauling ₆ Gas, then integrate the breaker and the current transformerThe body is disassembled, then the current transformer is taken out from the shell for overhauling, and the operation process is complex; it can be seen that the structural design of the co-housing, while to some extent modular, is not conducive to assembly and maintenance.

Disclosure of Invention

The utility model aims to provide HGIS equipment so as to solve the problem that the existing HGIS equipment in a straight-line arrangement is complex in maintenance operation process. The utility model also aims at providing a transformer substation so as to solve the same problem.

In order to achieve the above purpose, the HGIS device of the present utility model adopts the following technical scheme:

HGIS equipment is including being circuit breaker, current transformer, the isolator that the straight line was arranged, all is provided with the insulating basin between circuit breaker and the current transformer and between current transformer and the isolator, and circuit breaker, current transformer, isolator all form independent cavity from this.

The beneficial effects of the technical scheme are that: the utility model is used as an improvement to the prior art, and the circuit breaker, the current transformer and the isolating switch are separated by the insulating basin and are provided with independent chambers, so that the modularization and standardization of each part can be conveniently realized, and each part unit is further miniaturized, thereby being beneficial to manufacturing, transportation, field installation and overhaul; the linear arrangement structure is simple in overall structure, reduces the occupied area of equipment, and reduces the overall construction difficulty and engineering cost.

Further, a corrugated pipe is arranged between the current transformer and the isolating switch.

The beneficial effects of the technical scheme are that: by arranging the corrugated pipe between the current transformer and the isolating switch, the installation error can be adjusted, and the flexibility of overhaul is improved and the overhaul range is reduced during subsequent operation overhaul.

Further, one end of the isolating switch, which is far away from the mutual inductor, is provided with a quick grounding switch.

The beneficial effects of the technical scheme are that: the designed rapid grounding switch can effectively switch the device to induce current and cut off fault current, so that the reliability of the device is improved.

In order to achieve the above purpose, the transformer substation of the utility model adopts the following technical scheme:

the transformer substation comprises two groups of bus bars which are arranged in parallel, at least two sets of HGIS equipment are arranged between the two groups of bus bars in parallel, each HGIS equipment comprises a circuit breaker, a current transformer and a disconnecting switch which are arranged in a straight line, and insulating basin bodies are arranged between the circuit breaker and the current transformer and between the current transformer and the disconnecting switch, so that the circuit breaker, the current transformer and the disconnecting switch form independent chambers.

The beneficial effects of the technical scheme are that: the utility model is an improvement to the prior art, and the design can effectively perform networking of the transformer substation, offset circulation on different phases, reduce current entering the grounding grid and lighten the pressure of the grounding grid; the circuit breaker, the current transformer and the isolating switch are separated by the insulating basin and are provided with independent chambers, so that modularization and standardization of each part can be conveniently realized, and each part unit is further miniaturized, and the circuit breaker, the current transformer and the isolating switch are applicable to manufacturing, transportation, field installation and overhaul; the linear arrangement structure is simple in overall structure, reduces the occupied area of equipment, and reduces the overall construction difficulty and engineering cost.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a top view of the present utility model;

fig. 3 is a partial front view of fig. 2.

In the figure: 1. a circuit breaker; 2. a current transformer; 3. a bellows; 4. an isolating switch; 5. a fast grounding switch; 6. a bus; 7. a sleeve; 8. a first bus bar; 9. a bus ground; 10. and a second bus bar.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

It is noted that relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, 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, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" or the like does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The features and capabilities of the present utility model are described in further detail below in connection with the examples.

Embodiments of the substation of the present utility model:

as shown in fig. 1-2, the substation comprises two sets of first buses 8 arranged in parallel, and at least two sets of HGIS equipment are arranged in parallel between the two sets of buses.

HGIS equipment, including circuit breaker 1, current transformer 2, isolator 4, the isolator 4 is connected through current transformer 2 respectively at the both ends of circuit breaker 1, wholly is the style of calligraphy and arranges. Specifically, two ends of the circuit breaker 1 are respectively connected with a current transformer 2 through an insulating basin (not labeled in the figure), wherein the left end of the circuit breaker 1 is sequentially connected with the current transformer 2, an isolating switch 4 and a sleeve 7 through the insulating basin; the right end of the circuit breaker 1 is connected with a current transformer 2 through an insulating basin, the current transformer 2 is connected with a disconnecting switch 4 through a corrugated pipe 3, and the disconnecting switch 4 is sequentially connected with a quick-connection switch 5, a bus 6 and a sleeve 7 through the insulating basin; therefore, the breaker 1, the current transformer 2, the isolating switch 4, the quick grounding switch 5 and the insulating basin connected with the two ends of the breaker form independent air chambers respectively, so that the standardization and modularization of all parts can be conveniently realized, and the installation and the maintenance are convenient.

In the embodiment, the centers of the breaker 1, the current transformer 2, the isolating switch 4, the corrugated pipe 3, the bus 6 and other parts are on the same horizontal line, and the whole is arranged in a straight shape; the corrugated pipe 3 arranged between the current transformer 2 and the isolating switch 4 adjusts the installation error through the flange nut of the corrugated pipe 3, and can compress or dismantle the corrugated pipe 3 when the overhaul is needed, thereby facilitating the overhaul and reducing the overhaul range to a certain extent. In this embodiment, the isolating switch 4 is a linear isolating switch; the bus 6 can be provided with a partial discharge sensor, a molecular sieve and the like according to the requirements; the sleeve 7 may be selected from silicone rubber or porcelain bushing.

As shown in fig. 3, in actual engineering, when pouring foundation, the first busbar 8 is pre-buried underground and the busbar grounding point 9 is reserved; when the HGIS equipment is installed, the second bus bar 10 is manufactured according to the actual field size, and the equipment grounding conductive block and the bus bar grounding point 9 are connected, so that the inter-phase diversion effect is realized, circulation currents on different phases are counteracted, the current entering the grounding grid is reduced, and the pressure of the grounding grid is reduced. In addition, through the first busbar 8 of relative water conservancy diversion in advance pre-buried in the ground, can effectively reduce the work load of later stage field installation, improve the efficiency of construction.

Embodiments of the HGIS apparatus of the present utility model:

the HGIS device in this embodiment has the same structure as the HGIS device in the embodiment of the transformer substation described above, and will not be described in detail here.

The above description is only a preferred embodiment of the present utility model, and the patent protection scope of the present utility model is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present utility model should be included in the protection scope of the present utility model.

Claims

HGIS equipment, including circuit breaker, current transformer, isolator that is a word type arrangement, its characterized in that: and an insulating basin is arranged between the circuit breaker and the current transformer and between the current transformer and the isolating switch, so that independent chambers are formed by the circuit breaker, the current transformer and the isolating switch.
2. The HGIS apparatus according to claim 1, wherein: and a corrugated pipe is arranged between the current transformer and the isolating switch.
3. An HGIS apparatus according to claim 1 or 2, characterized in that: and one end of the isolating switch, which is far away from the transformer, is provided with a quick grounding switch.
4. Substation, its characterized in that: the transformer substation comprises two groups of bus bars which are arranged in parallel, at least two sets of HGIS equipment are arranged between the two groups of bus bars in parallel, each HGIS equipment comprises a circuit breaker, a current transformer and a disconnecting switch which are arranged in a straight line, and insulating basin bodies are arranged between the circuit breaker and the current transformer and between the current transformer and the disconnecting switch, so that the circuit breaker, the current transformer and the disconnecting switch form independent chambers.
5. The substation according to claim 4, characterized in that: and a corrugated pipe is arranged between the current transformer and the isolating switch.
6. A substation according to claim 4 or 5, characterized in that: and one end of the isolating switch, which is far away from the transformer, is provided with a quick grounding switch.