CN215934232U

CN215934232U - Movable transformer substation

Info

Publication number: CN215934232U
Application number: CN202121578004.XU
Authority: CN
Inventors: 朱德虎; 周灿文; 严杰; 吴先威; 解静; 张亚旭; 沈文婷; 王其珏
Original assignee: Siemens Transformer Wuhan Co Ltd
Current assignee: Siemens Energy Transformer Wuhan Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-03-01
Anticipated expiration: 2031-07-12

Abstract

The utility model discloses a movable transformer substation. This portable transformer substation includes: the main transformer vehicle comprises a first mobile platform and a main transformer module arranged on the first mobile platform; the switch vehicle comprises a second mobile platform and a switch module arranged on the second mobile platform; and the low-voltage distribution vehicle comprises a third mobile platform and a low-voltage transformation module arranged on the third mobile platform, wherein the power input end is connected to the switch module through a cable, the switch module is connected to the main transformation module through a cable, the main transformation module is connected to the low-voltage transformation module through a cable, and the low-voltage transformation module is connected to the power output end through a cable. This portable transformer substation realizes the module through adopting a plurality of cars to cut apart to whole transformer substation to guaranteed that the transportation size and the transportation weight of every car all satisfy the road transportation requirement, thereby can replace extra standby equipment in the station, and reduce the input of fixed asset.

Description

Movable transformer substation

Technical Field

The utility model relates to a power supply system, in particular to a mobile substation for power transmission.

Background

The transformer substation plays a very important role in the operation process of the power grid. A conventional substation is fixed, and the construction, installation and debugging of the substation can be completed in a long time. A traditional ground substation with the voltage class of 220kV is usually an urban junction substation. In reality, the transformer substation may be damaged by various natural or human factors, thereby causing the power grid to be paralyzed. To cope with these possible difficulties and restore the functionality of the substation as soon as possible, mobile substations have been designed. Mobile substations typically place the primary and secondary equipment of the substation on a mobile platform (e.g., a trailer of an automobile). With the diversification of application requirements and the increase of voltage classes and capacities, mobile substations of 110KV and above are increasingly required. However, due to their high voltage rating and large capacity, they are bulky and heavy and are therefore difficult to integrate with mobile platforms, especially considering their capacity for passage in various road conditions.

Therefore, in order to meet the requirements of application occasions and ensure the power supply quality, equipment which can replace a 220kV traditional ground substation is needed for temporary and emergency power supply. On-board mobile substations are a solution, but due to the large voltage and capacity of 220kV transformers, equipment size and weight are created, as challenges are posed to design and manufacturing.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides a movable transformer substation. This portable transformer substation realizes the module through adopting a plurality of cars to cut apart to whole transformer substation to guaranteed that the transportation size and the transportation weight of every car all satisfy the road transportation requirement, thereby can replace extra standby equipment in the station, and reduce the input of fixed asset.

The utility model is realized by adopting the following technical scheme:

a mobile substation, comprising: the main transformer vehicle comprises a first mobile platform and a main transformer module arranged on the first mobile platform; the switch vehicle comprises a second mobile platform and a switch module arranged on the second mobile platform; and the low-voltage distribution vehicle comprises a third mobile platform and a low-voltage transformation module arranged on the third mobile platform, wherein the power input end is connected to the switch module through a cable, the switch module is connected to the main transformation module through a cable, the main transformation module is connected to the low-voltage transformation module through a cable, and the low-voltage transformation module is connected to the power output end through a cable.

Preferably, the main transformer module is a transformer, and the transformer is a single-phase transformer structure.

Preferably, the main transformer module adopts a strong oil air cooling mode.

Preferably, the switch module is a metal-enclosed high-voltage switchgear.

Preferably, the main transformer block is provided with a plug-in bushing.

Preferably, the first mobile platform, the second mobile platform and the third mobile platform are respectively provided with platform connecting devices capable of being connected with each other.

Preferably, the number ratio of the main transformer vehicle, the switch vehicle and the low-voltage distribution vehicle meets 3:1: 1.

Compared with the prior art, the utility model has the beneficial effects that:

1. the whole transformer substation is divided into modules by adopting a plurality of vehicles, so that the transportation size and the transportation weight of each vehicle meet the road transportation requirement;

2. instead of additional spare equipment within the station. The investment of fixed assets is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In the drawings:

fig. 1 schematically illustrates a view of a main substation vehicle of a mobile substation according to an embodiment of the present invention.

Fig. 2 schematically illustrates a view of a main transformer block of a main transformer vehicle of a mobile substation according to an embodiment of the present invention.

Fig. 3 schematically illustrates a view of a switchgear vehicle of a mobile substation according to an embodiment of the utility model.

Fig. 4 schematically illustrates a view of a mobile substation in a combined state according to an embodiment of the utility model.

Detailed Description

In order to avoid conflict, the embodiments and features of the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the utility model.

Fig. 1 schematically illustrates a view of a main substation vehicle of a mobile substation according to an embodiment of the present invention. For example, the mobile substation of the present invention includes three main transformer vehicles, a high voltage switch vehicle and a low voltage distribution vehicle. For simplicity of description, only the main-transformer vehicle, the high-voltage switching vehicle, and the low-voltage distribution vehicle having a similar configuration to the main-transformer vehicle are shown in the drawings. However, it should be understood by those skilled in the art that although the illustration of the low-voltage distribution vehicle having a similar configuration to the main-transformer vehicle is omitted in the drawings, the following description for the main-transformer vehicle is equally applicable to the low-voltage distribution vehicle. As shown in fig. 1, the main-transformer vehicle includes: a first mobile platform 10, and a transformation module 12 mounted on the first mobile platform 10.

Fig. 2 schematically illustrates a view of a main transformer block of a main transformer vehicle of a mobile substation according to an embodiment of the present invention. The main transformation module is a transformer, and the transformer adopts a single-phase transformer structure, so that the structure is simple, the size is small, and the loss is low. According to incomplete statistics, the iron of a single-phase transformer with the same capacity is reduced by 20 percent compared with that of a three-phase transformer, the copper is reduced by 10 percent, and the weight is lighter; the single-phase transformer product has no phase-phase air insulation distance requirement, the sleeve is easy to arrange, and the size of the product can be reduced. Therefore, the vehicle-mounted mobile substation with the 220kV voltage class can adopt 3 single-phase transformers to replace 1 three-phase transformer so as to improve the product capacity, reduce the size and reduce the weight. In addition, the main transformer block 20 adopts a strong oil air cooling method, namely, an ODAF cooling method. Compared with the ONAN cooling mode, the ODAF cooling mode can reduce the weight and the size of the transformer train. Furthermore, the main transformer block 20 is provided with a plug-in bushing 202. In conventional transformer bushings, conventional dry bushings and cable plugs are typically employed. The 220kV cable plug head is easy to solve the problem of size limitation, but the 220kV cable cannot be transported and is difficult to store, the turning radius is large (generally 2.5 m-3.0 m is required), and a special test device is required for test verification insulation in each use; the conventional 220kV dry-type sleeve is required by the creepage distance and the dry arc distance, the height of the sleeve per se reaches 3.2m or more, the arrangement modes of the sleeve are two, and one method comprises the following steps: the requirement of the whole transportation height is met through the inclination angle, but the length of the transformer car is increased; in the second method, the sleeve is disassembled for transportation, but the oil drainage of the transformer is required (the oil drainage amount reaches 50 percent and above of the whole transformer oil). In the utility model, the main transformer pressing module is provided with a plug-in sleeve, the plug-in sleeve is a transformer sleeve between a cable plug and a conventional sleeve, and the tail end of the plug-in sleeve adopts a base similar to a cable plug head and is arranged on a transformer for isolating transformer oil; the plug part is a specially-made dry-type sleeve, and the bottom of the plug part is matched with the base structure to realize electric connection and plugging operation. So, the sleeve pipe is arranged simply, is dismantled the protection during the transportation, and whole size control and product weight reduction effect are obvious, and field usage are simple.

Fig. 3 schematically illustrates a view of a switchgear vehicle of a mobile substation according to an embodiment of the utility model. The switch vehicle includes: a second mobile platform 30, and a switch module 32 mounted on the second mobile platform 30. The switch module 32 employs a metal enclosed high voltage switchgear (GIS) instead of an air insulated high voltage switch (AIS) and a combined high voltage electrical appliance (HGIS). In addition, the switch module 32 may also include an arrester, which may be used to protect equipment from damage due to excessive transient currents. Those skilled in the art will appreciate that a surge arrester is not necessary.

In fig. 1 and 3, the first mobile platform 10 and the second mobile platform 30 may have a platform connecting device that can be connected to each other, respectively. Platform connection means are known per se. The first mobile platform 10 further includes a first traction interface attached to the opposite end of its platform interface. The second mobile platform 30 also includes a second traction interface attached to the opposite end of its platform interface. Two mobile platforms, a first mobile platform 10 and a second mobile platform 30 are provided, and a second towing attachment is provided for the second mobile platform 30 so that the second mobile platform 30 can be towed independently of the first mobile platform 10, for example by a power plant such as a truck or other vehicle. This reduces the volume and weight of each platform compared to a design in which the equipment on two mobile platforms is placed on one platform, thereby allowing the entire equipment movement system to achieve better capacity. Meanwhile, the two mobile platforms can be respectively pulled, so that equipment installed on each mobile platform can be independently used, the flexibility of using the equipment is improved, and the use cost is also reduced. When needed, the first mobile platform 10 and the second mobile platform 30 can be simultaneously pulled by connecting a vehicle with the first traction connecting device only by connecting the first mobile platform 10 and the second mobile platform 30 through the platform connecting device, so that the transportation efficiency is improved on the premise of not reducing the flexibility of the used equipment. In addition, the platform connection means may also be used to connect the first mobile platform 10 and the second mobile platform 30 to each other after the equipment moving system arrives at the site, so as to fix the relative positions of the equipment on the two mobile platforms. It will be understood by those skilled in the art that platform attachment means are not necessary, but when platform attachment means are present, it is preferable to attach the first and second traction attachment means to opposite ends of the platform attachment means on the first and second mobile platforms 10 and 30, respectively, to facilitate attachment and transport of the first and second mobile platforms 10 and 30. In addition, the second towing attachment is preferably removably attached to the second mobile platform 30, thereby facilitating prevention of the second towing attachment from interfering with transportation when towing two mobile platforms connected by the platform attachment simultaneously by one vehicle. The second removable hitch coupler may be coupled to the second mobile platform 30 by any one of a number of known means such as pins, hooks, bolts, etc., the first hitch coupler, the second hitch coupler, and the platform coupler being known.

In addition, the first moving platform 10 and the second moving platform 30 may also have platform height adjusting means, respectively. When the height during transportation is limited by, for example, a bridge, a tunnel, etc., the platform height adjusting means may reduce the height of the first mobile platform 10 and the second mobile platform 30, thereby improving the trafficability and flexibility of the equipment moving system. Platform height adjustment devices are known.

Fig. 4 schematically illustrates a view of a mobile substation in a combined state according to an embodiment of the utility model. As shown in fig. 4, three main transformer vehicles are connected with each other by using a plug-in type sleeve, and the whole transformer substation is divided into modules by using a plurality of vehicles, so that the transportation size and the transportation weight of each vehicle are ensured to meet the road transportation requirements. The power input end is connected to a switch module 40 of the switch vehicle via a cable, the switch module 40 is respectively connected to a main transformer module 42 of a first main transformer vehicle, a main transformer module 44 of a second main transformer vehicle, a main transformer module 46 of a third main transformer vehicle, the main transformer module 42 of the first main transformer vehicle, the main transformer module 44 of the second main transformer vehicle and the main transformer module 46 of the third main transformer vehicle are connected with each other via a cable, and then the main transformer module 42 of the first main transformer vehicle, the main transformer module 44 of the second main transformer vehicle and the main transformer module 46 of the third main transformer vehicle are connected to a low-voltage transformer module 48 of the low-voltage distribution vehicle via a cable, and the low-voltage transformer module 48 is connected to the power output end via a cable.

As mentioned above, although not specifically shown in the drawings, the low voltage distribution vehicle of the mobile substation includes a third mobile platform and a low voltage transformation module mounted on the third mobile platform, and a third traction connection device. The above description of the first mobile platform and the voltage transformation module mounted on the first mobile platform, and the first traction connection device, by connecting the first traction connection device with the vehicle, the description that the first mobile platform can be moved is also applicable to the third mobile platform and the low voltage transformation module mounted on the third mobile platform, and the third traction connection device. The design enables the third mobile platform to be towed independently of the first mobile platform and the second mobile platform, and any one of the equipment on the first mobile platform, the second mobile platform and the third mobile platform can be used independently, so that the self weight and the volume of each mobile platform are further reduced, and the equipment moving system obtains better traffic capacity and flexibility in use.

Compared with the prior art, the utility model has the beneficial effects that:

1. the module division is realized by adopting a plurality of vehicles to change the whole power station, so that the transportation size and the transportation weight of each vehicle meet the road transportation requirement;

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mobile substation, comprising:

the main transformer vehicle comprises a first mobile platform and a main transformer module arranged on the first mobile platform;

the switching vehicle comprises a second mobile platform and a switching module installed on the second mobile platform; and

the low-voltage distribution vehicle comprises a third mobile platform and a low-voltage transformation module arranged on the third mobile platform,

the power input end is connected to the switch module through a cable, the switch module is connected to the main transformation module through a cable, the main transformation module is connected to the low transformation module through a cable, and the low transformation module is connected to the power output end through a cable.

2. The mobile substation of claim 1, wherein the primary transformation module is a transformer, the transformer being a single-phase transformer structure.

3. The mobile substation of claim 2, wherein the main transformer module is cooled by forced-air cooling.

4. A mobile substation according to any of claims 1 to 3, characterized in that the switchgear modules are metal enclosed high voltage switchgear.

5. A mobile substation according to claim 1, characterized in that the main transformation module is provided with a plug-in bushing.

6. A mobile substation according to any of claims 1 to 3, characterized in that the first, second and third mobile platforms each have mutually connectable platform connection means.

7. The mobile substation of any one of claims 1 to 3, wherein the number ratio of the main transformer vehicles, the switch vehicles, the low voltage distribution vehicles satisfies 3:1: 1.