A 500kV indoor substation 500kV, 220kV same side up and down double-layer overhead line structure

Abstract

The application discloses a 500KV indoor substation 500KV, 220KV same side upper and lower double-layer overhead line structure, which comprises a power distribution device building, the power distribution device building is provided with a 500KV overhead line platform, the top of the power distribution device building is provided with a 500KV line structure, the upper portion of the 500KV overhead line platform is provided with a 500KV power distribution room, a 500KV GIS high-voltage bushing, a 500KV lightning arrester and a 500KV voltage transformer, the 500KV power distribution room is internally provided with 500KV GIS equipment, the 500KV GIS equipment is electrically connected with the 500KV high-voltage bushing, and the 500KV line structure is electrically connected with the 500KV GIS high-voltage bushing, the 500KV lightning arrester and the 500KV voltage transformer; the lower portion of the 500KV overhead line platform is provided with a 220KV power distribution room, the 220KV power distribution room is internally provided with 220KV GIS equipment, a 220KV line structure, a 220KV GIS high-voltage bushing, a 220KV lightning arrester and a 220KV voltage transformer are arranged on the outdoor ground, the 220KV GIS equipment is electrically connected with the 220KV GIS high-voltage bushing, and the 220KV line structure is electrically connected with the 220KV GIS high-voltage bushing, the 220KV lightning arrester and the 220KV voltage transformer. The application has the advantages that the line mode of the 500KV power distribution device and the 220KV power distribution device has the advantages of less occupied space, low dismounting difficulty and low operation and maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage power transmission equipment, in particular to a 500KV indoor substation 500KV, 220KV same side upper and lower double-layer overhead out-of-line structure. BACKGROUND

[0002] With the continuous improvement of industrialization level, the increasing expansion of city size, and the increasing power load density year by year, it has become an inevitable trend to build substations in cities. In order to ensure safe and reliable power supply in the center of large cities, and to build energy-saving, environmentally friendly and harmonious power grids, the existing 500KV substations are gradually arranged in an indoor manner.

[0003] It is understood that there are two ways of out-of-line of the existing 500KV indoor substation, the first way is a multi-side single-layer overhead out-of-line way, 500KV power distribution devices and 220KV power distribution devices are symmetrically overhead out-of-line, and the second way is a cable tunnel out-of-line way, 500KV power distribution devices and 220KV power distribution devices adopt different direction cable tunnels and cable layers to be connected, and cables of different voltage grades pass through the cable layer into the tunnel to realize out-of-line. However, the above existing technologies have the following problems:

[0004] (1) The multi-side single-layer overhead out-of-line way requires high out-of-line conditions, occupies more space, has high difficulty in demolition, and high demolition cost;

[0005] (2) The cable tunnel out-of-line way has high engineering cost, limited cable line transmission capacity, and high operation and maintenance cost of cable tunnels and cable lines SUMMARY

[0006] The purpose of the present application is to provide a 500KV indoor substation 500KV, 220KV same side upper and lower double-layer overhead out-of-line structure, so that the out-of-line way of 500KV power distribution devices and 220KV power distribution devices has the advantages of less occupied space, low construction difficulty, low demolition difficulty and low operation and maintenance cost.

[0007] In order to achieve the above object, the application provides a 500KV indoor substation 500KV, 220KV same side upper and lower double-layer overhead line structure, which comprises a power distribution device building, the power distribution device building is provided with a 500KV overhead line platform, the top end of the power distribution device building is provided with a 500KV line structure, the upper part of the 500KV overhead line platform is provided with a 500KV power distribution room, a 500KV GIS high-voltage bushing, a 500KV lightning arrester and a 500KV voltage transformer, the 500KV GIS equipment is arranged in the 500KV power distribution room, the 500KV GIS equipment is electrically connected with the 500KV high-voltage bushing, the 500KV line structure is electrically connected with the 500KV GIS high-voltage bushing, the 500KV lightning arrester and the 500KV voltage transformer through a down lead;

[0008] The lower part of the 500KV overhead line platform is provided with a 220KV power distribution room, the 220KV GIS equipment is arranged in the 220KV power distribution room, a 220KV line structure, a 220KV GIS high-voltage bushing, a 220KV lightning arrester and a 220KV voltage transformer are arranged on the outdoor ground, the 220KV GIS equipment is electrically connected with the 220KV GIS high-voltage bushing, and the 220KV line structure is electrically connected with the 220KV GIS high-voltage bushing, the 220KV lightning arrester and the 220KV voltage transformer through a down lead.

[0009] In some embodiments of the application, the line height of the 500KV line structure is 13m higher than the line height of the 220KV line structure.

[0010] In some embodiments of the application, the line height of the 500KV line structure is 39m, and the line height of the 220KV line structure is 26m.

[0011] In some embodiments of the application, the line height of the 500KV line structure is 34m, and the line height of the 220KV line structure is 21m.

[0012] In some embodiments of the application, the upper part of the 500KV overhead line platform is provided with a caterpillar crane.

[0013] In some embodiments of the application, the height of the 500KV overhead line platform is 10m.

[0014] The 500KV indoor substation 500KV, 220KV same side upper and lower double-layer overhead line structure provided by the embodiments of the application has the following beneficial effects compared with the prior art:

[0015] Since the 500KV outgoing line framework is arranged at the top of the power distribution device building, the 500KV GIS device, 500KV GIS high voltage bushing, 500KV arrester and 500KV voltage transformer are located above the 500KV overhead outgoing line platform, the 220KV GIS device is located below the 500KV overhead outgoing line platform, the 220KV outgoing line framework, 220KV GIS high voltage bushing, 220KV arrester and 200KV voltage transformer are arranged on the ground outside, thus, the 500KV power distribution device and the 220KV power distribution device are arranged in a stacked manner, so as to achieve the purposes of fully utilizing the internal space of the 500KV indoor substation, occupying less internal space of the 500KV indoor substation, easily outgoing, saving land occupation, reducing the amount of demolition, reducing the engineering cost and ensuring the output capacity of the line. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of a 500KV, 220KV same side up-down double-layer overhead outgoing line structure of a 500KV indoor substation according to an embodiment of the present application.

[0017] In the figure, 1 is a 500KV overhead outgoing line platform, 2 is a 500KV outgoing line framework, 3 is a 500KV power distribution room, 4 is a 500KV GIS high voltage bushing, 5 is a 500KV arrester, 6 is a 500KV voltage transformer, 7 is a 500KV GIS device, 8 is a 220KV power distribution room, 9 is a 220KV outgoing line framework, 10 is a 220KV GIS high voltage bushing, 11 is a 220KV arrester, 12 is a 220KV voltage transformer, and 13 is a 220KV GIS device. DETAILED DESCRIPTION

[0018] The specific embodiments of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0019] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0020] As Figure 1As shown, this embodiment of the invention provides a 500kV indoor substation with a 500kV and 220kV double-layer overhead outgoing line structure on the same side. It includes a power distribution equipment building, which has a 500kV overhead outgoing line platform 1. The top of the power distribution equipment building has a 500kV outgoing line frame 2. The upper part of the 500kV overhead outgoing line platform 1 has a 500kV distribution room 3, a 500kV GIS high-voltage bushing 4, a 500kV surge arrester 5, and a 500kV voltage transformer 6. The 500kV distribution room 3 has a 500kV GIS device 7, which is electrically connected to the 500kV high-voltage bushing. The 500kV outgoing line frame 2 is electrically connected to the 500kV GIS high-voltage bushing 4, the 500kV surge arrester 5, and the 500kV voltage transformer 6 through down conductors.

[0021] The 500kV overhead outgoing line platform 1 has a 220kV distribution room 8 at its lower part. The 220kV distribution room 8 contains a 220kV GIS device 13. The 220kV outgoing line frame 9, the 220kV GIS high-voltage bushing 10, the 220kV surge arrester 11 and the 220kV voltage transformer 12 are located on the outdoor ground. The 220kV GIS device 13 is electrically connected to the 220kV GIS high-voltage bushing 10. The 220kV outgoing line frame 9 is electrically connected to the 220kV GIS high-voltage bushing 10, the 220kV surge arrester 11 and the 220kV voltage transformer 12 through down conductors.

[0022] Based on the above configuration, in the 500kV indoor substation of this embodiment of the invention, the 500kV and 220kV double-layer overhead outgoing line structure on the same side is such that the 500kV outgoing line frame 2 is located at the top of the power distribution equipment building, while the 500kV GIS equipment 7, 500kV GIS high-voltage bushing 4, 500kV surge arrester 5, and 500kV voltage transformer are located above the 500kV overhead outgoing line platform 1, and the 220kV GIS equipment 13 is located below the 500kV overhead outgoing line platform 1. The 220kV outgoing line frame 9, 220kV GIS high-voltage bushing 10, 220kV surge arrester 11, and 200kV voltage transformer are installed on the outdoor ground. Thus, the 500kV and 220kV power distribution equipment are stacked, thereby making full use of the internal space of the 500kV indoor substation, minimizing the internal space occupation of the 500kV indoor substation, facilitating outgoing lines, saving land area, reducing demolition work, lowering project costs, and ensuring the output capacity of the line.

[0023] In some embodiments, optionally, such as Figure 1 As shown, the construction scale of this 500KV indoor substation is as follows: 6 outgoing 500KV lines and 8 outgoing 220KV lines.

[0024] In some embodiments, optionally, such as Figure 1As shown, the 500KV arrester 5 and the 220KV arrester are open column zinc oxide arresters, and the 500KV voltage transformer 6 and the 220KV voltage transformer are open column capacitive voltage transformers.

[0025] In some embodiments, as shown in FIG. 1, the 500KV overhead line platform 1 is 39m high, and the 220KV overhead line platform 9 is 26m high. Figure 1 As shown in FIG. 2, when the 500KV line and the 220KV line are simultaneously powered off for maintenance, in order to ensure the live safety distance of the power-off maintenance, and considering the inconsistency of the sag of the 500KV line and the sag of the 220KV line, the line height of the 500KV line frame 2 is 13m higher than the line height of the 220KV line frame 9.

[0026] In some embodiments, as shown in FIG. 1, the 500KV overhead line platform 1 is 39m high, and the 220KV overhead line platform 9 is 26m high. Figure 1 As shown in FIG. 2, when the 500KV line and the 220KV line are simultaneously powered off for maintenance, in order to ensure the live safety distance of the power-off maintenance, and considering the inconsistency of the sag of the 500KV line and the sag of the 220KV line, the line height of the 500KV line frame 2 is 13m higher than the line height of the 220KV line frame 9.

[0027] In order to expand the 35KV shunt capacitor bank and the 35KV shunt reactor bank, meet the installation and maintenance lifting of the shunt capacitor bank and the shunt reactor bank, and not affect the live operation of the upper 220KV crossing line, the line height of the 220KV line frame 9 is 26m.

[0028] In some embodiments, as shown in FIG. 1, the 500KV overhead line platform 1 is 39m high, and the 220KV overhead line platform 9 is 26m high. Figure 1 As shown in FIG. 2, when the 500KV line and the 220KV line are simultaneously powered off for maintenance, in order to ensure the live safety distance of the power-off maintenance, and considering the inconsistency of the sag of the 500KV line and the sag of the 220KV line, the line height of the 500KV line frame 2 is 13m higher than the line height of the 220KV line frame 9.

[0029] Similarly, considering the connection height of the line terminal tower, the line height of the 220KV line frame 9 is 21m.

[0030] In some embodiments, as shown in FIG. 1, the 500KV overhead line platform 1 is 39m high, and the 220KV overhead line platform 9 is 26m high. Figure 1 As shown in FIG. 3, in order to facilitate the handling and maintenance of the 500KV distribution device, for the newly built 500KV distribution device, a ground truck is used to lift to the 500KV overhead line platform 1; at the same time, a caterpillar crane is arranged at the upper part of the 500KV overhead line platform 1, so as to facilitate the installation and maintenance of the 500KV distribution device.

[0031] In some embodiments, as shown in FIG. 1, the 500KV overhead line platform 1 is 39m high, and the 220KV overhead line platform 9 is 26m high. Figure 1 As shown in FIG. 4, the height of the distribution device building is 23m, and the height of the 500KV overhead line platform 1 is 10m.

[0032] In summary, the 500KV, 220KV double-layer overhead line structure on the same side of the 500KV indoor substation of the embodiment of the present application, because the 500KV overhead line frame 2 is arranged at the top of the power distribution device building, the 500KV GIS device 7, 500KV GIS high-voltage bushing 4, 500KV arrester 5 and 500KV voltage transformer are located above the 500KV overhead line platform 1, the 220KV GIS device 13 is located below the 500KV overhead line platform 1, the 220KV overhead line frame 9, 220KV GIS high-voltage bushing 10, 220KV arrester 11 and 200KV voltage transformer are arranged on the ground outside, thus, the 500KV power distribution device and the 220KV power distribution device are stacked, thereby achieving the purposes of fully utilizing the internal space of the 500KV indoor substation, occupying less internal space of the 500KV indoor substation, easily leading out, saving the occupied area, reducing the amount of demolition, reducing the engineering cost and ensuring the output capacity of the line.

[0033] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A 500KV indoor substation 500KV, 220KV same side up and down double-layer overhead line structure, characterized in that, The power distribution device building is provided with a 500KV overhead outgoing line platform, and the top end of the power distribution device building is provided with a 500KV outgoing line framework, and the upper part of the 500KV overhead outgoing line platform is provided with a 500KV power distribution room, a 500KV GIS high-voltage bushing, a 500KV lightning arrester and a 500KV voltage transformer, and the 500KV power distribution room is provided with a 500KV GIS device, and the 500KV GIS device is electrically connected with the 500KV GIS high-voltage bushing, and the 500KV outgoing line framework is electrically connected with the 500KV GIS high-voltage bushing, the 500KV lightning arrester and the 500KV voltage transformer through a down conductor; The lower part of the 500KV overhead outgoing line platform is provided with a 220KV power distribution room, and the 220KV power distribution room is provided with a 220KV GIS device, and a 220KV outgoing line framework, a 220KV GIS high-voltage bushing, a 220KV lightning arrester and a 220KV voltage transformer are arranged on the ground outside, and the 220KV GIS device is electrically connected with the 220KV GIS high-voltage bushing, and the 220KV outgoing line framework is electrically connected with the 220KV GIS high-voltage bushing, the 220KV lightning arrester and the 220KV voltage transformer through a down conductor; The outgoing line direction of the 500KV outgoing line framework is the same as that of the 220KV outgoing line framework, and the outgoing line height of the 500KV outgoing line framework is 13m higher than that of the 220KV outgoing line framework; The 500KV voltage transformer and the 220KV voltage transformer are both open column type capacitive voltage transformers.

2. The 500KV indoor substation 500KV, 220KV same side upper and lower double-layer overhead line structure according to claim 1, characterized in that, The outgoing line height of the 500KV outgoing line framework is 39m, and the outgoing line height of the 220KV outgoing line framework is 26m.

3. The 500KV indoor substation 500KV, 220KV same side upper and lower double-layer overhead line structure according to claim 1, characterized in that, The outgoing line height of the 500KV outgoing line framework is 34m, and the outgoing line height of the 220KV outgoing line framework is 21m.

4. The 500KV indoor substation 500KV, 220KV same side upper and lower double-layer overhead line structure according to claim 1, characterized in that, The upper part of the 500KV overhead outgoing line platform is provided with a caterpillar crane.

5. The 500 KV indoor substation 500 KV, 220 KV same side upper and lower double-layer overhead line structure according to claim 1, characterized in that, The height of the 500KV overhead outgoing line platform is 10m.

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