CN216672551U - Three-dimensional cable pit of transformer substation and cable support laying apparatus - Google Patents
Three-dimensional cable pit of transformer substation and cable support laying apparatus Download PDFInfo
- Publication number
- CN216672551U CN216672551U CN202121929253.9U CN202121929253U CN216672551U CN 216672551 U CN216672551 U CN 216672551U CN 202121929253 U CN202121929253 U CN 202121929253U CN 216672551 U CN216672551 U CN 216672551U
- Authority
- CN
- China
- Prior art keywords
- cable
- power
- cables
- transformer substation
- laying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model belongs to the technical field of transformer substations, and discloses a three-dimensional cable trench and cable support laying device for a transformer substation, which comprises high-voltage power cables and low-voltage cables, wherein the high-voltage power cables and the low-voltage cables are laid in different trenches; important power cables and important control cables laid on different sides; the power cable of the double-power-supply loop of the DC charging device laid in layers and the power cable of the double-power-supply loop of the power box from the AC distribution panel to the distribution area are connected in sequence. The utility model researches the related calculation of the cable laying and the cable carrier of the transformer substation by applying a three-dimensional refined design means, is an innovative reconstruction of the process, control and management of laying construction, the management requirement of later operation and maintenance on the cable is gradually increased, the cable laying is an indispensable component and key technology in digital three-dimensional design, the utility model fills the blank in the aspect, and provides a standardized calculation application result of the cable laying, the phase cable trench and the cable bracket laying of the transformer substation.
Description
Technical Field
The utility model belongs to the technical field of transformer substations, and particularly relates to a three-dimensional cable trench and cable support laying device for a transformer substation.
Background
The optical cable laying is an important component in electrical design, is the most complex and tedious link, and has great influence on subsequent construction and operation and maintenance. The construction work of optical cable laying is tedious, the optical cable is large in quantity, and the construction time is long, and in the past process, experienced construction personnel are usually used for planning and laying cables according to the field situation so as to reduce the crossing of the cables in a channel, but the difficulty is still high, and the incomplete situation is considered. Meanwhile, the cables are easy to generate cross collision in the channel; the length of the cable is difficult to accurately count manually, the design process is time-consuming and labor-consuming, and the reservation margin is often too large, so that waste is caused; construction units often lay according to a method convenient for construction, and the cables on the uppermost layer are arranged orderly and the cables on the lower layer are seriously collided; supervision cannot check one by one, manual check is easy to make mistakes, and supervision is difficult; the increasingly strict management of operation and maintenance in the later period makes cable laying an urgent problem to be solved.
In the past research, a plurality of researches are related to cable laying, and the related calculation and laying application design of the power cable with high voltage level of 330kV or above on a cable channel and a cable bracket are researched; the method has the advantages that the visual presentation and the automatic path planning of cable laying are realized by utilizing three-dimensional design software and a three-dimensional modeling technology, for example, the 3D-CAD technology is firstly used for constructing a digital three-dimensional power transformation design and transfer platform and creating an optical cable laying software module, and the cable laying is automatically carried out by reading a cable inventory and combining plane arrangement; the application of digital three-dimension in cable laying is also researched; after the national network comprehensively carries out GIM modeling standardization, lightweight model building of professional fusion is carried out by using an STD-R software platform, and cable laying is directly carried out; the relevant modeling and application of the digital secondary cable loop are also preliminarily researched; related researches are carried out on other aspects of related application of the cable, such as multi-loop buried pipe laying based on high-voltage cables, load optimization of pipe laying under narrow channels, cross arrangement laying, induced voltage simulation calculation, simplified laying models and the like; and the Dijkstra algorithm is applied to research the optimal path and the shortest distance of the laid cable in the cable laying process.
With the gradual maturity of three-dimensional digitization technology and virtual simulation technology, the problems of cross collision of cables, difficulty in accurate statistics of length, time and labor consumption in laying construction cables and the like can be effectively solved by the three-dimensional cable laying and three-dimensional visualization technology, so that the trend of applying the three-dimensional digitization software to lay the three-dimensional cables is realized, and the effects of construction, pipe building and operation and maintenance of all departments can be effectively assisted. Currently, the more commonly used software is the subsystem software of Bentley corporation, the digital three-dimensional design platform STD-R of Beijing Bo Chao super corporation, and the ELEC digital software platform of Shanghai Xin electric company. However, the number of cables and optical cables of the secondary circuit in the substation is more numerous and complex than that of primary cables, and there are control cables, power cables, communication cables, optical cables, direct current cables, alternating current cables, and the like, and the laying of these secondary optical cables is the most important part in the cable laying of the substation, and there are few studies on the laying of the secondary cables, and the calculation and application of the laying of the secondary optical cables by using a three-dimensional refinement technique are blank.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a three-dimensional cable trench and a cable support laying device for a transformer substation, and aims to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: a three-dimensional cable trench and cable support laying device for a transformer substation comprises high-voltage power cables and low-voltage cables which are laid in different trenches and are 10kV or more; important power cables and important control cables laid on different sides; the power cable of the double-power-supply loop of the DC charging device laid in layers and the power cable of the double-power-supply loop of the power box from the AC distribution panel to the distribution area are connected in sequence.
The three-dimensional cable trench and cable support laying device for the transformer substation preferably further comprises power cables laid according to important power cables in trenches between the station transformers and the station electric rooms, and two or more groups of storage battery power cables.
The three-dimensional cable trench and cable support laying device for the transformer substation preferably further comprises a storage battery power cable laid by adopting a separated buried pipe.
The three-dimensional cable trench and cable support laying device for the transformer substation preferably further comprises 500kV or more transformer substation guide optical cables laid in different trenches, wherein the 500kV or more transformer substation guide optical cables comprise a plurality of optical cables in the same direction or a plurality of optical cables in different directions of the same transmission system.
As the three-dimensional cable trench and cable support laying device for the transformer substation, disclosed by the utility model, preferably, the important power cables comprise a transformer strong oil cooling device dual-power-supply loop power cable, a fire pump and transformer water spraying device dual-power-supply loop power cable, a direct-current main screen to direct-current distribution screen dual-power-supply loop power cable, a 330kV and above transformer substation communication power supply dual-power-supply loop power cable, a UPS and a UPS bypass dual-power-supply loop power cable.
As a three-dimensional cable trench and cable support laying device for a substation of the present invention, preferably, the important control cables include important control cables such as a system protection dual power supply loop control cable, a dual relay protection loop control cable, a breaker operation dc power supply dual loop control cable, and the like.
The three-dimensional cable trench and cable support laying device for the transformer substation preferably further comprises 110kV-330kV transformer substation guide optical cables laid in a split-side mode.
Compared with the prior art, the utility model has the beneficial effects that: the utility model researches the related calculation of the cable laying and the cable carrier of the transformer substation by using a three-dimensional fine design means, is an innovative reconstruction of the process, control and management of laying construction, and provides a certain calculation application technology reference for the three-dimensional laying application. The management requirements of later operation and maintenance on cables are gradually increased, cable laying is already an indispensable component and key technology in digital three-dimensional design, and the utility model fills the blank in the aspect and provides a standardized calculation application result of substation cable laying and phase cable trench and cable bracket laying.
Drawings
FIG. 1 shows the dimensions of the main trench 1100X 1000 mm.
FIG. 2 is a schematic view of the groove size 1100X 800mm according to the present invention.
FIG. 3 is a schematic view of the size of the branch trench 800X 800 mm.
Fig. 4 is a standardized arrangement diagram of the three-dimensional cable laying trench of the utility model.
FIG. 5 is a schematic diagram of cable routing on a bracket according to the routing algorithm of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1-5, the present invention provides the following technical solutions: a three-dimensional cable trench and cable support laying device for a transformer substation comprises high-voltage power cables and low-voltage cables which are laid in different trenches and are 10kV or more; important power cables and important control cables laid on different sides; the double-power-loop power cable from the double power-loop power cable of the DC charging device and the double power-loop power cable from the AC distribution panel to the power supply box of the power distribution area are laid in layers.
Specifically, the system also comprises power cables between the station transformer and the station electric room, and two or more groups of storage battery power cables, wherein the power cables are laid according to important power cables in different ditches.
Specifically, a storage battery power cable laid by adopting a separated buried pipe is also included.
Specifically, the system further comprises 500kV or more transformer substation guide optical cables laid in different ditches, wherein the 500kV or more transformer substation guide optical cables comprise a plurality of optical cables in the same direction or a plurality of optical cables in different directions of the same transmission system.
Specifically, the important power cable comprises a transformer strong oil cooling device dual-power loop power cable, a fire pump and transformer water spraying device dual-power loop power cable, a direct-current main screen to direct-current distribution screen dual-power loop power cable, a 330kV and above transformer substation communication power supply dual-power loop power cable, a UPS and a UPS bypass dual-power loop power cable.
Specifically, the important control cables include important control cables such as a system protection dual power supply loop control cable, a dual relay protection loop control cable, a breaker operation direct current power supply dual loop control cable, and the like.
In particular, the transformer substation guide optical cable laying in a split-side mode is further included.
In this embodiment, the shortest path should be selected as much as possible in the cable trench, and the main trench, the branch trench, and the branch trench are reasonably set in combination with the number of cables. The cable should be laid according to the cable application scene, according to the fire prevention requirement branch ditch, branch side, layering. The high-voltage power cable of 10kV or more is arranged in a special ditch or directly buried, and the low-voltage power cable, the control cable and the optical cable can be laid in a ditch.
The groove laying means that 10kV or more high-voltage power cables and low-voltage cables are laid in the groove. In the general design scheme of the transformer substation, storage batteries are generally arranged in special storage battery chambers and in an indoor main control building, so that the power cables of the storage batteries are generally laid by separately buried pipes. Guide optical cables (comprising a plurality of optical cables in the same direction or a plurality of optical cables in different directions of the same transmission system) of a transformer substation of 500kV or more are laid in different ditches.
The branch side laying means that important power cables such as a power cable of a dual-power loop of a high oil wind (water) cooling device of the transformer, a power cable of a dual-power loop of a fire pump and a water spraying device of the transformer, a power cable of a dual-power loop of a direct-current main screen to a direct-current branch screen, a power cable of a dual-power loop of a communication power supply of a transformer substation with 330kV or more, a power cable of a dual-power loop of a UPS bypass and a power cable of a dual-power loop of a UPS bypass are laid on the branch side. Important control cables for system protection (line, circuit breaker, bus coupler and bus differential) such as a dual-power loop control cable, a dual relay protection loop control cable, a circuit breaker operation direct-current power supply dual-loop control cable and the like are laid on the corresponding sides. And the guide optical cable of the 110kV-330kV transformer substation is laid on the side.
The layered laying means that when the cable trench support is arranged on one side, the important cables to be laid on the side do not have the condition of laying on the side, and the cables are laid on the layer. The power cable of the double-power loop of the direct-current charging device and the power cable of the double-power loop of the power box from the alternating-current distribution panel to the distribution area are laid in layers.
Referring to fig. 1-3, the cable trench size is selected as follows: secondary cable pit and primary cable pit divide the ditch to lay, according to the site operation space demand, set up the operation in the cable pit and maintain the passageway size setting, unified cable support size forms 3 kinds of width cable pit schemes, and every kind of cable pit and cable support have unified the size and laid the cable type: the sizes of the main ditch, the branch ditch and the branch ditch are 1100 multiplied by 1000mm, 1100 multiplied by 800mm and 800 multiplied by 800mm respectively.
The width of a cable trench maintenance channel is considered according to 500mm, and the length of a supporting arm on each side of three cable trenches is 300 mm; the space between the low-voltage power cables is 200mm, the space between the layers of the control cable is 150mm, the optical cable is laid in the groove box, the space between the layers is 200mm and 150mm, and when the space of the bracket is occupied to be small, the free space of the bracket can be used for laying the control cable. The cable trench support is made of angle steel or composite materials, when the support is made of angle steel, the upright column is 50mm multiplied by 5mm, and the support arm is 40mm multiplied by 4 mm; when the support is made of composite materials, the width of the upright post is not more than 50mm, and the height of the supporting arm is not more than 40 mm.
Referring to fig. 4, when a cable trench and a cable support module are disposed in a cable laying platform, parameters such as a cable trench specification, a volume ratio, a support, a shelf interval, a cable type, and a length need to be set. Based on the configuration of the cable trench and the support adopting three standard forms in the transformer substation, a standardized cable trench template compiling module can be configured in the cable laying module, each compiling module is set according to the unified size and various types of parameters, and the compiling module can be directly selected to arrange the cable trench and the cable support when the cable laying is carried out.
The cable trench support is arranged in three dimensions: the cable laying on the cable trench support is mainly the arrangement on each layer of bracket arm after determining the basic principle of laying and the standardized configuration of the cable trench and the cable support.
Referring to fig. 5, according to the DL/T50217 specification, in addition to the delta-shaped (trefoil) configuration of the same loop of the single-core power cable for the ac system, it is not easy to overlap the important multiple power cables in the same loop; the control and signal cables may be abutted or stacked in multiple layers. After the standardization selection research according to the size of the cable trench, the type of the cable at each layer on the cable support is determined, and the specific arrangement of the cable on the support can be researched according to the arrangement of the bracket at each layer.
And sequentially detecting each layer of the left and right supports of the path to be laid, sequentially arranging the cables on each bracket according to the laying sequence set in the cable inventory, stacking the cables to the upper layer after one line is full, and determining the height of each layer by the cable with the largest diameter. The lower diagram is to import electricity after editing the arrangement algorithm by computer language.
Laying a control cable and a power cable of the transformer substation: the outer diameters of control cables and power cables in a specific transformer substation are led into the three-dimensional cable laying platform, and automatic laying is achieved through a digital technology. The table below shows the outer diameters of the cables commonly used in substations.
When the cable arrangement is laid in three dimensions, the control cable of an important loop needs to be independently arranged on one side of the bracket, and other control cables are arranged on the other side.
Automatic statistical calculation of cable laying length: when three-dimensional refined cable laying is applied to carry out total-station cable laying, paths can be automatically calculated and cable length statistics can be carried out, and the main length calculation is mainly carried out according to the formed cable laying paths and the additional length.
Because the cable laying length needs to consider the height difference change of path terrain, the expansion joint or detour standby allowance, the reserved section of the stripped cable required for manufacturing a terminal or a joint and the length required for leading the cable to equipment or devices, the additional length needs to be considered when the cable laying measurement of 35kV and the following is carried out, and a formula can be used when the cable laying length is carried out to calculate the final cable material amount according to the requirements of DL/T50217 and 2018 regulations:
(1.05 ~ 1.1) × (actual path length + additional length)
Wherein: the additional length is calculated with reference to the following table.
Additional length for cable laying measurement in annex G35 kV and below
Table G35 kV and below additional length for cable laying measurement
The method comprises the steps of making a cable trench laying scheme based on three dimensions; selecting the size of the cable trench; arranging and three-dimensionally laying the cable trench supports; and (5) carrying out statistical calculation on the laying length of the cable trench.
It is noted that, herein, 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. Also, the terms "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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A three-dimensional cable trench and cable support laying device for a transformer substation is characterized by comprising high-voltage power cables and low-voltage cables which are laid in sub-trenches and are 10kV or more;
important power cables and important control cables laid on different sides;
the power cable of the double-power-supply loop of the DC charging device laid in layers and the power cable of the double-power-supply loop of the power box from the AC distribution panel to the distribution area are connected in sequence.
2. The three-dimensional cable trench and cable support laying device of a transformer substation of claim 1, further comprising power cables between the station transformer and the station electricity room laid according to the important power cables in the trench, and two or more groups of storage battery power cables.
3. The three-dimensional cable trench and cable support laying apparatus of a substation of claim 1, further comprising a battery power cable laid with a separate buried pipe.
4. The three-dimensional cable trench and cable support laying device of transformer substation of claim 1, characterized by further comprising 500kV and above transformer substation guide optical cables laid in different trenches, wherein the 500kV and above transformer substation guide optical cables comprise a plurality of optical cables in the same direction or a plurality of optical cables in different directions of the same transmission system.
5. The three-dimensional cable trench and cable support laying device of transformer substation of claim 1, characterized in that, important power cable includes transformer forced oil cooling device dual power return circuit power cable, fire pump and transformer water atomizer dual power return circuit power cable, direct current main screen to direct current branch screen dual power return circuit power cable, 330kV and above transformer substation communication power supply dual power return circuit power cable, UPS and UPS bypass dual power return circuit power cable.
6. The three-dimensional cable trench and cable support laying device of transformer substation of claim 1, wherein the important control cable comprises important control cables such as a system protection dual power supply loop control cable, a dual relay protection loop control cable, a breaker operation direct current power supply dual loop control cable, and the like.
7. The three-dimensional cable trench and cable support laying device of transformer substation of claim 1, characterized by further comprising 110kV-330kV transformer substation guide optical cables laid in different sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121929253.9U CN216672551U (en) | 2021-08-17 | 2021-08-17 | Three-dimensional cable pit of transformer substation and cable support laying apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121929253.9U CN216672551U (en) | 2021-08-17 | 2021-08-17 | Three-dimensional cable pit of transformer substation and cable support laying apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216672551U true CN216672551U (en) | 2022-06-03 |
Family
ID=81758270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121929253.9U Active CN216672551U (en) | 2021-08-17 | 2021-08-17 | Three-dimensional cable pit of transformer substation and cable support laying apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216672551U (en) |
-
2021
- 2021-08-17 CN CN202121929253.9U patent/CN216672551U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202738185U (en) | Performance lamplight power supply system | |
| CN203434520U (en) | Bypass completely-electrified operation system | |
| CN104156835A (en) | Wide-area distributed integrated topology analysis method for large power grid | |
| CN103838925B (en) | Power network rack pattern drawing method based on computer information technology | |
| CN104778552A (en) | Village-level power grid configuring and implementing method | |
| CN216672551U (en) | Three-dimensional cable pit of transformer substation and cable support laying apparatus | |
| CN111541304B (en) | Power grid accident modeling management system | |
| CN117521308A (en) | Modeling method, device, equipment and storage medium for laying cable buried pipe of transformer substation | |
| CN205583475U (en) | Integrated transformer substation of 110kV prepackage type | |
| CN204905731U (en) | Complete indoor transformer substation of three winding components of a whole that can function independently transformers of 110kV | |
| CN107317226A (en) | A kind of transformer station's general electric arrangement structure | |
| CN105958353A (en) | Transformer substation and layered transformer substation | |
| CN203233060U (en) | Indoor transformer station cable trough arrangement structure | |
| Wen et al. | The application of 3D design technology in the design of 220kV substation in Miluo Western | |
| CN207572932U (en) | A kind of double ditch improved structures of communication based on substation | |
| CN107359582A (en) | The improved structure and its improved method of a kind of double ditch designs of transformer substation communication | |
| CN207475113U (en) | Electric power extra-high voltage station used in communication machine room " mesh " font two-layer wiring slot box | |
| CN206992496U (en) | A kind of transformer station's general electric arrangement structure | |
| CN217740992U (en) | Box-type substation arrangement structure and control room arrangement structure suitable for underpass road | |
| Wei et al. | Research on critical technology application of power electronic technology in substation cable laying | |
| CN113463954B (en) | 110kv urban transformer substation arrangement system | |
| Hu et al. | In-Depth Study of Three-Dimensional Design Content of Transformer Substation | |
| CN111711958B (en) | Distribution selection method for multi-service shared large-core-number OPGW (optical fiber composite overhead ground wire) connection points based on intelligent power transmission line | |
| Yu et al. | Application of Three-dimensional Digital Cable Laying in 750kV Substation | |
| CN111884130B (en) | Indoor construction method for railway signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |