CN205882398U - Female wire sleeve cross arrangement structure of HGIS - Google Patents

Abstract

The utility model relates to a cross-arrangement structure of HGIS bus bushings, which is applied to the three-half connection or four-third connection type, including two bus bars of 1M bus bar and 2M bus bar and arranged between the two bus bars and connected into one The middle circuit breaker and two side circuit breakers of the string are arranged in three rows with the two side circuit breakers. The two outer ends of the middle circuit breaker are respectively provided with an outlet bushing connected to the outgoing line. The middle circuit breaker is located near 1M An outer end of the bus side is provided with a branch air pipe, which is connected to one end of a side circuit breaker, and the other end of the side circuit breaker is provided with a bus bushing connected to the 2M bus. The intermediate circuit breaker on the side of the bus is connected to the other side circuit breaker, and extends to the bus bushing of the 1M bus; the utility model can realize the circuit of the same name without complicating the arrangement of wiring and increasing the occupied area. Arranged alternately on different busbar sides.

Description

A cross arrangement structure of HGIS busbar bushing

technical field

The utility model relates to a cross arrangement structure of HGIS bus bushings, in particular to a cross arrangement structure of HGIS bus bushings applied to three-half or four-thirds wiring types, and belongs to the technical field of power transmission and transformation engineering design.

Background technique

The substation design with three-half or four-thirds main wiring, especially when there are only two power distribution devices in the initial stage of construction, the distribution string design of the circuit with the same name is particularly important. Under normal circumstances, the main transformers in the substation area are generally arranged side by side on one side of the high-voltage power distribution device, which belongs to a typical circuit with the same name. At present, most substations with three-half or four-thirds of the main wiring All main transformers are connected to the same side bus near the equipment, and a small number of substations can connect different main transformers to different side buses by adding a large number of frames and high jump lines.

Article 5.1.2 of "DL/T5218-2012 220kV~750kV Substation Design Technical Regulations" records: "When using one and a half circuit breaker wiring (that is, three-half wiring), it is advisable to pair the power circuit and load circuit in series, with the same name The circuits should not be arranged in the same string, but they can be connected to the same busbar..." and the article states: "The circuits with the same name are alternately arranged to connect to the buses on different sides, which can avoid simultaneous power failure of the circuits with the same name, but it will complicate the layout and wiring, increase the The occupied area increases the difficulty of operation and maintenance and reduces the actual reliability, so if there is no special requirement, the circuit with the same name can be connected to the same side bus.”

It is stipulated in the regulations that the circuit with the same name can be connected to the busbar on the same side, which is out of consideration of economy and current design status, and is generally aimed at open power distribution devices. At present, for open power distribution devices, in order to alternately arrange circuits with the same name to connect to different busbars, it is necessary to add a large number of structures and high-span lines, which greatly complicates the layout and wiring, increases the difficulty of operation and maintenance, and reduces the practical cost. operational reliability. At present, if most substations adopt the scheme of parallel arrangement of main transformer and 500kVHGIS power distribution device, it is basically to connect multiple main transformers to the bus on the same side, such as the general design 500-B-5 design scheme of State Grid Corporation, vision 4 The main transformers are all connected to the 1M bus side close to 500kV.

If the optimized design can be used to arrange the circuits with the same name on different busbars without changing the complexity of the wiring arrangement, it will greatly reduce the probability of power outages for the circuits with the same name at the same time, thereby improving the reliability of the system operation.

At present, the design of 330kV~1000kV voltage level substations at home and abroad usually uses three-half wiring, and a few use four-thirds wiring. With the technological development of GIS equipment, the current 330kV~1000kV new substations basically use GIS equipment or HGIS equipment. Different from open equipment, using GIS equipment or HGIS equipment can solve various problems that cannot be solved in the design of open equipment by adopting flexible and optimized layout of air pipes.

Utility model content

In order to solve the problems in the prior art, the utility model provides an HGIS bus bushing cross arrangement structure applied to the three-half connection or four-third connection type, which can realize the alternate arrangement of circuits with the same name in different On the busbar side, the layout and wiring are simple.

In order to achieve the above purpose, the technical solution proposed by the utility model is: a cross-arrangement structure of HGIS busbar bushings, which is applied to the three-half connection or four-thirds connection type, including two busbars of 1M busbar and 2M busbar and An intermediate circuit breaker and two side circuit breakers arranged between two bus bars and connected in a series, the intermediate circuit breaker and the two side circuit breakers are arranged in three rows, and the two outer ends of the intermediate circuit breaker are respectively provided with a Connected to the outlet sleeve of the outgoing line, the intermediate circuit breaker is provided with a branch air pipe at an outer end close to the 1M busbar side, the branch air pipe is connected to one end of a side circuit breaker, and the other end of the side circuit breaker is provided There is a bus bushing connected to the 2M bus, and the intermediate circuit breaker is provided with another branch air pipe at an outer end close to the side of the 2M bus, and the other branch air pipe is connected to the other side circuit breaker, and the other The other end of an edge circuit breaker is provided with a bus bushing connected to the 1M bus.

The technical scheme of the utility model is to reconnect the wiring originally connected to the 1M busbar to the 2M busbar, and reconnect the wiring originally connected to the 2M busbar to the 1M busbar, thereby realizing the translocation of the incoming and outgoing lines on different busbar sides. The layout structure of the utility model and the layout structure of the prior art can be alternately arranged to realize the alternate arrangement of different side outlets on different busbar sides, which can greatly reduce the probability of simultaneous power failure of the same name circuit, and ensure power supply reliability and system stability, especially for When there are only two strings of power distribution devices in the initial construction of substations and power plants, the same-named circuits are arranged on different busbar sides, which can greatly reduce the probability of simultaneous power outages of the same-named circuits and ensure power supply reliability and system stability; the utility model arranges the original The intermediate circuit breaker and two side circuit breakers are arranged in three rows, so that the translocation of the incoming and outgoing lines of different busbar sides of the power distribution device using HGIS equipment can be realized under the condition of only adding some branch air pipes, and the layout and wiring are simple and convenient. Small footprint, convenient operation and maintenance, and strong actual reliability.

A further improvement to the above technical solution is: the middle circuit breaker is located in the middle row, and the two side circuit breakers are respectively located in the two side rows, forming an "S"-shaped arrangement.

A further improvement to the above technical solution is: the intermediate circuit breaker and the side circuit breaker are arranged in a misaligned position, and the branch air pipe is arranged above the intermediate circuit breaker and the side circuit breaker. Since the circuit breakers in the string are arranged in three rows in the "S"-shaped layout plan, the air chamber of the intermediate circuit breaker is completely blocked by the air chamber of the side circuit breaker. Considering the convenience of production operation and maintenance, the layout of the branch air pipes can be further optimized. Through The intermediate circuit breaker and the side circuit breaker are misplaced, and the branch air pipe is arranged above the intermediate circuit breaker and the side circuit breaker, and the intermediate circuit breaker and the bus circuit breaker are connected by cable-staying branch air pipes to form a rhombus layout scheme, which utilizes The space above the circuit breaker unit not only saves the length of the branch air pipe and reduces the cost, but also forms a dislocation between the air chamber between the middle circuit breaker and the air chamber between the side circuit breakers, thus ensuring the convenience of production operation and maintenance.

A further improvement to the above technical solution is: the intermediate circuit breaker is arranged in the side row. By setting the intermediate circuit breaker in the side row, and then adding part of the bus branch air pipe, a "G" shape arrangement is further formed, and all the circuit breaker air chambers are arranged outside the air pipe, which is convenient for operation and maintenance.

The HGIS bus bushing cross arrangement structure of the utility model is suitable for the design and arrangement of HGIS power distribution devices of different voltage levels, especially for the electrical design of substations and power plants with voltage levels of 330~750kV.

Description of drawings

Figure 1 is the equivalent transformation diagram of the three-half connection;

Figure 2 is an equivalent transformation diagram of a four-thirds connection;

Fig. 3 is the layout plan figure of embodiment 1;

Fig. 4 is the layout plan figure of embodiment 2;

Fig. 5 is the layout plan figure of embodiment 3;

Fig. 6 is the layout plan figure of embodiment 4;

Fig. 7 is the layout plan figure of embodiment 5;

Fig. 8 is the arrangement diagram of embodiment 6;

Fig. 9 is the perspective main wiring diagram of embodiment 7;

Fig. 10 is a plane layout diagram of the power distribution device of Embodiment 7.

The reference signs of the above accompanying drawings are:

Bus bushing 1, outlet bushing 2, intermediate circuit breaker 3, side circuit breaker 4, branch air pipe 5.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

In order to have further understanding and recognition to the method feature of the present utility model and the effect achieved, in order to cooperate detailed explanation with preferred embodiment and accompanying drawing, explain as follows:

The HGIS bus bushing cross arrangement structure of the embodiment of the utility model is applied to the three-half connection or four-third connection type, which is to reconnect the original connection to the 1M bus to the 2M bus, and to connect the original connection to the 2M bus The wiring of the busbar is reconnected to the 1M busbar, thereby realizing the translocation of the incoming and outgoing lines on different busbar sides. Figure 1 and Figure 2 are the equivalent conversion diagrams of the wiring diagrams after the transposition of the incoming and outgoing lines on different busbar sides. The HGIS of the present utility model The bus bushing cross arrangement structure is based on the above equivalent transformation diagram, using the extension arrangement of the bus branch air pipes to meet the wiring requirements after the equivalent transformation, and realize the alternate arrangement of different side outlets on different bus sides according to requirements.

Example 1

As shown in Figure 3, this embodiment is an "S"-shaped layout scheme applied to the cross-arrangement structure of the HGIS busbar bushing for three-half wiring, including two busbars of 1M busbar and 2M busbar and arranged between the two busbars And the intermediate circuit breaker 3 and two side circuit breakers 4 connected in a series, the intermediate circuit breaker 3 and the two side circuit breakers 4 are arranged in three rows, and the two outer ends of the intermediate circuit breaker 3 are respectively provided with an outlet sleeve connected to the outgoing line The pipe 2 and the intermediate circuit breaker 3 are provided with a branch air pipe 5 at an outer end close to the side of the 1M bus, and the branch air pipe 5 is connected to one end of a side circuit breaker 4, and the other end of the side circuit breaker 4 is provided with a The bus bushing 1, the intermediate circuit breaker 3 is provided with another branch air pipe 5 at an outer end close to the 2M bus side, and the other branch air pipe 5 is connected to the other side circuit breaker 4, and the other side circuit breaker 4 One end is provided with a busbar bushing 1 connected to a 1M busbar.

This implementation is to reconnect the wiring originally connected to the 1M busbar to the 2M busbar, and reconnect the wiring originally connected to the 2M busbar to the 1M busbar, thereby realizing the transposition of the incoming and outgoing lines on different busbar sides, and the layout of the utility model Alternate arrangement of the structure and the arrangement structure of the existing technology can realize the alternate arrangement of different side outgoing lines on different busbar sides, which can greatly reduce the probability of simultaneous power failure of the same name circuit, and ensure power supply reliability and system stability, especially for substations and power plants When there are only two strings of power distribution devices in the initial construction, the circuits with the same name are arranged on different busbar sides, which can greatly reduce the probability of simultaneous power failure of the circuits with the same name, and ensure the reliability of power supply and system stability; Arranged in three rows with two side circuit breakers, so that the relocation of the incoming and outgoing lines of different busbar sides of the power distribution device using HGIS equipment can be realized under the condition of only adding some branch air pipes, the layout and wiring are simple, and the floor space is small , Easy operation and maintenance, strong actual reliability.

Example 2

As shown in Figure 4, this embodiment is an "S"-shaped layout scheme applied to the cross-arrangement structure of HGIS busbar bushings with four-thirds wiring. The layout structure of this embodiment is basically the same as that of Embodiment 1, the difference is that : There are two intermediate circuit breakers 3 located in the same column, and an outlet bushing 2 connected to the outgoing line is also arranged between the two intermediate circuit breakers 3 .

Example 3

As shown in Figure 5, this embodiment is a diamond-shaped layout scheme applied to the cross-arrangement structure of HGIS bus bushings with three-half connections. The circuit breaker 3 and the side circuit breaker 4 are misplaced, and the branch air pipe 5 is arranged above the intermediate circuit breaker 3 and the side circuit breaker 4 .

Since the circuit breakers in the string are arranged in three rows in the layout scheme of Example 1, the air chamber of the intermediate circuit breaker 3 is completely blocked by the air chamber of the side circuit breaker 4, considering the convenience of production operation and maintenance, the branch air pipe can be further optimized 5, the intermediate circuit breaker 3 and the side circuit breaker 4 are misplaced, and the branch air pipe 5 is arranged above the intermediate circuit breaker 3 and the side circuit breaker 4, and the intermediate circuit breaker 3 and the bus circuit breaker 4 pass through the branch air pipe 5 Cable-stayed connection, so that the space above the circuit breaker unit is used, which not only saves the length of the branch air pipe 5, reduces the cost, but also forms a dislocation between the air chamber of the intermediate circuit breaker 3 and the air chamber of the side circuit breaker 4, thereby ensuring It is convenient for production operation and maintenance.

Example 4

As shown in Figure 6, this embodiment is a diamond-shaped layout scheme applied to the cross-arrangement structure of HGIS busbar bushings with four-thirds wiring. There are two circuit breakers 3 located in the same row, and an outlet bushing 2 connected to the outlet is also arranged between the two intermediate circuit breakers 3 .

Example 5

As shown in Figure 7, this embodiment is a "G"-shaped layout scheme applied to the cross-arrangement structure of HGIS busbar bushings with three-half wiring. The layout structure of this embodiment is basically the same as that of Embodiment 1, the difference is that : The middle circuit breaker 3 is arranged on the side row, and some branch air pipes 5 are added to further form a "G"-shaped layout scheme. All the air chambers of the circuit breakers can be arranged outside the air pipe, which is further convenient for operation and maintenance.

Example 6

As shown in Figure 8, this embodiment is a "G"-shaped layout scheme applied to the cross-arrangement structure of HGIS busbar bushings with four-thirds wiring. The layout structure of this embodiment is basically the same as that of Embodiment 5, except that : There are two intermediate circuit breakers 3 located in the same column, and an outlet bushing 2 connected to the outgoing line is also arranged between the two intermediate circuit breakers 3 .

Example 7

This embodiment adopts the HGIS power distribution device of the 500kV substation with four-thirds connection as the main wiring type. Figure 9 is the main wiring diagram of the Envision Electric in this embodiment, including 4 main transformers and 10 outgoing lines. The envisioned string distribution scheme is as follows #1 and #3 main transformers are connected to the 1M bus side, while #2 and #4 main transformers are connected to the 2M bus side, that is, circuits with the same name need to be arranged on different side buses.

As shown in Figure 10, it is the layout diagram of the power distribution device of this embodiment. In this embodiment, the second string and the fourth string from right to left adopt the "G"-shaped layout scheme in Embodiment 6, and the second string The 1st string and the 3rd string adopt the layout plan of the prior art. Through this layout method, the main wiring type as shown in the attached figure is realized, and different main transformers (that is, circuits with the same name) are respectively connected to the busbars on both sides. The probability of simultaneous power failure of multiple main transformers in the station is reduced, and the reliability of power supply is greatly improved.

The intersecting arrangement structure of the HGIS bus bushing of the utility model is not limited to the above-mentioned embodiments, and all technical solutions obtained by adopting equivalent replacement methods fall within the protection scope of the utility model.

Claims (4)

1. A cross-arrangement structure of HGIS busbar bushings, which is applied to the three-half or four-thirds wiring type, including two busbars of 1M busbar and 2M busbar, and the busbars arranged between the two busbars and connected in a string The intermediate circuit breaker and the two side circuit breakers are characterized in that: the intermediate circuit breaker and the two side circuit breakers are arranged in three rows, and the two outer ends of the intermediate circuit breaker are respectively provided with an outlet bushing connected to the outgoing line, The intermediate circuit breaker is provided with a branch gas pipe at an outer end close to the 1M busbar side, the branch gas pipe is connected to one end of a side circuit breaker, and the other end of the side circuit breaker is provided with a busbar connected to the 2M busbar Sleeve, the intermediate circuit breaker is provided with another branch air pipe at an outer end close to the side of the 2M bus, and the other branch air pipe is connected to the other side circuit breaker, and the other end of the other side circuit breaker is provided with There is a busbar bushing connected to the 1M busbar. 2. The HGIS bus bushing cross arrangement structure according to claim 1, characterized in that: the middle circuit breaker is located in the middle row, and the two side circuit breakers are respectively located in the two side rows. 3. The HGIS bus bushing cross arrangement structure according to claim 2, characterized in that: the intermediate circuit breaker and the side circuit breaker are arranged in a misplaced position, and the branch air pipe is arranged above the intermediate circuit breaker and the side circuit breaker. 4. The HGIS busbar bushing cross arrangement structure according to claim 1, characterized in that: the intermediate circuit breaker is arranged in the side row.