CN-122026243-A - 220KV prefabricated cabin type transformer substation

CN122026243ACN 122026243 ACN122026243 ACN 122026243ACN-122026243-A

Abstract

The invention relates to a 220kV prefabricated cabin type transformer substation, which comprises a three-dimensional multilayer prefabricated cabin and a supporting foundation, wherein the prefabricated cabin comprises a first layer of prefabricated cabin and a second layer of outdoor platform, primary equipment and auxiliary equipment are arranged in the first layer of prefabricated cabin, the second layer of outdoor platform is positioned above the first layer of prefabricated cabin, high-voltage equipment and the second layer of prefabricated cabin are arranged on the second layer of outdoor platform, secondary equipment is arranged in the second layer of prefabricated cabin, the supporting foundation comprises a prefabricated independent foundation and a prefabricated beam, the prefabricated independent foundation is vertically arranged in a foundation pit, the prefabricated beam is horizontally fixed above the prefabricated independent foundation and used for supporting the prefabricated cabin, compared with the traditional distributed prefabricated cabin layout, the scheme is favorable for reducing the total plane occupied area, the land-feature cost is reduced, and only foundation node pouring, cabin body hoisting splicing and a small amount of external wiring are needed on site, so that the construction period is shortened.

Inventors

ZHENG PENGFEI
ZHANG CHI
WANG ZHIXIANG
ZHANG JIAYUAN
GAO QIANG
JIN ZHAO
WEI XIAOCHEN
ZHAO JIANFU
QI WENLONG
JIA WENZHONG

Assignees

青岛特锐德电气股份有限公司
青岛特锐德设计院有限公司

Dates

Publication Date: 20260512
Application Date: 20260318

Claims (10)

1. A 220kV prefabricated compartment substation, comprising: a stereoscopic multilayer prefabricated cabin, the prefabricated cabin comprising: The system comprises a layer of prefabricated cabin, a layer of auxiliary equipment and a layer of storage battery, wherein primary equipment and auxiliary equipment are arranged in the layer of prefabricated cabin, the primary equipment comprises at least one of medium-voltage equipment, grounding transformer, low-voltage equipment, station transformer and SVG power module, and the auxiliary equipment comprises the storage battery; The two-layer outdoor platform is positioned above the first-layer prefabricated cabin, high-voltage equipment and the second-layer prefabricated cabin are arranged on the two-layer outdoor platform, secondary equipment is arranged in the second-layer prefabricated cabin, the high-voltage equipment comprises a 220kV GIS, and the secondary equipment comprises at least one of a secondary protection screen body and a monitoring room; the support foundation comprises a prefabricated independent foundation and a prefabricated cross beam, wherein the prefabricated independent foundation is vertically arranged in a foundation pit, and the prefabricated cross beam is horizontally fixed above the prefabricated independent foundation and used for supporting a prefabricated cabin.
2. 220KV prefabricated cabin substation according to claim 1, characterized in that, The bottom of the two-layer prefabricated cabin is provided with a cable interlayer, a cable shaft which is vertically arranged is arranged in the one-layer prefabricated cabin, the two-layer prefabricated cabin is communicated with the cable interlayer, the top of the cable shaft is communicated with the cable interlayer, and the bottom of the cable shaft is communicated with the one-layer prefabricated cabin.
3. 220KV prefabricated cabin substation according to claim 1, characterized in that, The outside of the prefabricated cabin is provided with a 220kV main transformer, an SVG reactor and a lightning arrester which are integrally distributed with the prefabricated cabin, wherein the SVG reactor is connected with the SVG power module through a cable, and the cable passes through a pipeline preset underground.
4. 220KV prefabricated cabin substation according to claim 1, characterized in that, The side surface of the one-layer prefabricated cabin or the top of the one-layer prefabricated cabin is provided with an SVG heat exchanger.
5. 220KV prefabricated cabin substation according to claim 1, characterized in that, The top of the one-layer prefabricated cabin is also provided with cable bridges extending along the length direction of the one-layer prefabricated cabin, the number of the cable bridges is at least two, the cable bridges are arranged at intervals along the width direction of the one-layer prefabricated cabin, and a secondary cable channel is formed in the cable bridges.
6. 220KV prefabricated cabin substation according to claim 1, characterized in that, Still be provided with electric power framework on the two-layer outdoor platform, electric power framework includes framework vertical part and framework horizontal part, the quantity of framework vertical part is four, is located GIS equipment's week side, framework vertical part's bottom support is in on the two-layer outdoor platform, framework horizontal part's both ends are connected between adjacent framework vertical part forms frame construction for support GIS equipment's external pencil.
7. 220KV prefabricated cabin substation according to claim 1, characterized in that, The grounding system comprises a metal support, an insulator, annular galvanized flat steel and a down-lead, wherein the metal support is fixed on the two-layer outdoor platform, the insulator is fixed on the metal support, the annular galvanized flat steel is arranged at the top of the insulator and surrounds GIS equipment, one end of the down-lead is welded with the annular galvanized flat steel, the other end of the down-lead is led to a main grounding grid, the grounding points of a shell, a voltage transformer and a grounding knife of the GIS equipment are led to the annular galvanized flat steel through copper bars, and copper-iron transition blocks are arranged at the connecting positions.
8. The 220kV prefabricated compartment substation of claim 6, wherein, The two-layer outdoor platform is characterized in that an illumination assembly is further arranged on the two-layer outdoor platform and comprises a plurality of illumination light sources which are arranged on the power framework in a scattered mode and/or on the top of the two-layer outdoor platform.
9. 220KV prefabricated cabin substation according to claim 1, characterized in that, The number of the prefabricated independent foundations is multiple, the prefabricated independent foundations are arranged in the foundation pit at intervals, and connection nodes between the prefabricated independent foundations and the prefabricated cross beams are connected and fixed through cast-in-place treatment.
10. 220KV prefabricated cabin substation according to claim 1, characterized in that, The support foundation further comprises a prefabricated cable trench, wherein the prefabricated cable trench is positioned below the prefabricated beam and used for connecting the medium voltage equipment with external equipment.

Description

220KV prefabricated cabin type transformer substation Technical Field The invention belongs to the technical field of substations, and particularly relates to a 220kV prefabricated cabin type substation. Background In recent years, as an integrated and industrialized solution, the prefabricated cabin type transformer substation is widely applied to the field of medium and low voltage, so that the construction period is effectively shortened, and the field work load is reduced. However, for 220kV voltage class, due to large equipment volume, high insulation requirement and complex wiring, the traditional prefabricated cabin type transformer substation scheme mostly adopts a distributed layout, namely the equipment is divided into a plurality of independent prefabricated cabins according to voltage class and function, and then splicing and secondary wiring are carried out on site. The traditional station building scheme of the distributed prefabricated cabin type transformer substation has the main defects of large occupied area and high land feature cost in practice that all functional equipment cabins are independently and dispersedly arranged, so that the occupied area in the enclosing wall of the whole transformer substation is large. The construction amount of the civil engineering foundation is large, the cable laying is complex, the equipment cabins which are distributed in a scattered way need to be provided with independent foundations, a large amount of cables are required to be laid among the cabins, the cabins and the equipment, so that cable trenches in the station area are crisscrossed vertically and horizontally, and the engineering cost is high. And the distributed layout among the devices makes the connection paths of the primary and secondary cables longer, so that the material cost of the cable is increased, and the installation workload of cable laying, fireproof blocking and the like is obviously increased. Disclosure of Invention The invention aims to provide a 220kV prefabricated cabin type transformer substation, which aims to solve the problems of insufficient integration level, large occupied area, long construction period, high overall manufacturing cost and the like of the existing prefabricated cabin type transformer substation in the prior art. In order to achieve the aim of the invention, the invention is realized by adopting the following technical scheme: the invention provides a 220kV prefabricated cabin type transformer substation, which comprises: a stereoscopic multilayer prefabricated cabin, the prefabricated cabin comprising: The system comprises a layer of prefabricated cabin, a layer of auxiliary equipment and a layer of storage battery, wherein primary equipment and auxiliary equipment are arranged in the layer of prefabricated cabin, the primary equipment comprises at least one of medium-voltage equipment, grounding transformer, low-voltage equipment, station transformer and SVG power module, and the auxiliary equipment comprises the storage battery; The two-layer outdoor platform is positioned above the first-layer prefabricated cabin, high-voltage equipment and the second-layer prefabricated cabin are arranged on the two-layer outdoor platform, secondary equipment is arranged in the second-layer prefabricated cabin, the high-voltage equipment comprises a 220kV GIS, and the secondary equipment comprises at least one of a secondary protection screen body and a monitoring room; the support foundation comprises a prefabricated independent foundation and a prefabricated cross beam, wherein the prefabricated independent foundation is vertically arranged in a foundation pit, and the prefabricated cross beam is horizontally fixed above the prefabricated independent foundation and used for supporting a prefabricated cabin. In some embodiments of the present application, a cable interlayer is disposed at the bottom of the two-layer prefabricated cabin, a cable shaft vertically arranged is disposed in the one-layer prefabricated cabin, the two-layer prefabricated cabin is communicated with the cable interlayer, the top of the cable shaft is communicated with the cable interlayer, and the bottom of the cable shaft is communicated with the one-layer prefabricated cabin. Through the design of cable intermediate layer and cable shaft, built a three-dimensional cable passage that runs through the total station, realized the orderly connection of cable between upper and lower floor's equipment and between inside and outside equipment, avoided the problem of cable pit disorder in traditional scheme. In some embodiments of the application, a 220kV main transformer, an SVG reactor and a lightning arrester which are integrally distributed with the prefabricated cabin are arranged outside the prefabricated cabin, the SVG reactor is connected with the SVG power module through a cable, and the cable passes through a pipeline preset underground. The layout ensures that large-scale equipmen